Alpha preview #31
Alpha preview #31
Conversation
Add ExchangeService and OrderFilter widget added MostroAction enum type to match Rust implementation Added content, message, status and small order types Exchange service Add Content types for Mostro Orders Add session and session manager Events and orders Add test files from protocol docs Started test suites added integration tests add more test case data from docs Updated Order Display Filter ui add providers and session storage Added currency exchange lookup and custom currency fields Added input check for Add Order screen Update order screen to use App theme extracted Exchange Service providers to own file Order Details revision Refactor to StreamProvider for events Combined Kind and OrderType enums Add NIP-44 implementation nip44 impl Working Nip44 implementation nip44 complete implementation Nip44 clean up nip44 final mods android build updates build for Android
WalkthroughThe changes in this pull request encompass a wide range of modifications across multiple files within the project. Key updates include the introduction of new classes and enums for managing orders, payments, and user interactions, as well as significant refactoring to integrate Riverpod for state management. The removal of secure storage dependencies and related functionalities is notable, alongside the addition of localization support and new provider implementations for handling exchange rates and events. The overall structure reflects a shift towards improved modularity and responsiveness in the application's architecture. Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant App
participant Service
participant Repository
User->>App: Initiate Order
App->>Service: Publish Order
Service->>Repository: Store Order
Repository-->>Service: Order Confirmation
Service-->>App: Order Published
App-->>User: Notify Order Status
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lib/data/models/enums/order_type.dart (1)
9-14: 🛠️ Refactor suggestion
Improve error message and optimize fromString implementation.
- The error message mentions "Kind" which should be "OrderType" for clarity.
- Using firstWhere on enum values is less efficient than a simple switch statement for this use case.
Consider this implementation:
static OrderType fromString(String value) { - return OrderType.values.firstWhere( - (k) => k.value == value, - orElse: () => throw ArgumentError('Invalid Kind: $value'), - ); + switch (value) { + case 'buy': + return OrderType.buy; + case 'sell': + return OrderType.sell; + default: + throw ArgumentError('Invalid OrderType: $value'); + } }Committable suggestion skipped: line range outside the PR's diff.
lib/data/models/text_message.dart (2)
8-13:
⚠️ Potential issueFix incorrect JSON structure
The current implementation uses the type as a key, which creates an inconsistent JSON structure and loses type information. The JSON should include both the type and message fields explicitly.
Apply this fix:
@override Map<String, dynamic> toJson() { return { - type: message, + 'type': type, + 'message': message, }; }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Map<String, dynamic> toJson() { return { 'type': type, 'message': message, }; }
1-17: 💡 Codebase verification
JSON structure inconsistency detected in TextMessage implementation
The
toJson()implementation in TextMessage differs from other Content implementations in structure. All other implementations return a map where thetypeis a key containing nested data:
- TextMessage:
{ type: message }(direct value)- Peer:
{ type: { 'pubkey': publicKey } }(nested object)- PaymentRequest:
{ type: [order?.toJson(), lnInvoice] }(nested array)- Order:
{ type: { 'kind': kind.value, ... } }(nested object)The TextMessage implementation should be updated to follow the consistent pattern of using nested structures:
toJson() { return { type: { 'content': message } }; }🔗 Analysis chain
Verify JSON structure consistency across Content implementations
Since this is part of a larger messaging system, we should ensure consistent JSON structure across all Content implementations.
The previous ast-grep pattern might have failed due to syntax. Let's gather more context about the Content interface/implementations first to formulate better queries.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for other Content implementations and their toJson methods ast-grep --pattern 'class $_ implements Content { $$$ toJson() { $$$ } $$$ }'Length of output: 91
Script:
#!/bin/bash # Let's try a different approach to find Content implementations # First, let's find the Content interface/class definition rg "class Content" -A 5 # Then search for all files that might contain Content implementations rg "implements Content" # Also search for potential abstract class definition rg "abstract class Content"Length of output: 600
Script:
#!/bin/bash # Let's examine the toJson implementations in all Content implementations echo "=== TextMessage toJson ===" rg "toJson\(\)" -A 5 lib/data/models/text_message.dart echo "=== Peer toJson ===" rg "toJson\(\)" -A 5 lib/data/models/peer.dart echo "=== PaymentRequest toJson ===" rg "toJson\(\)" -A 5 lib/data/models/payment_request.dart echo "=== Order toJson ===" rg "toJson\(\)" -A 5 lib/data/models/order.dartLength of output: 971
lib/data/models/peer.dart (3)
8-12:
⚠️ Potential issueAdd error handling in fromJson factory
The current implementation could throw runtime exceptions if the JSON is malformed or missing the 'pubkey' field.
factory Peer.fromJson(Map<String, dynamic> json) { + final pubkey = json['pubkey']; + if (pubkey == null || pubkey is! String) { + throw FormatException('Invalid or missing pubkey in JSON'); + } return Peer( - publicKey: json['pubkey'] as String, + publicKey: pubkey, ); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.factory Peer.fromJson(Map<String, dynamic> json) { final pubkey = json['pubkey']; if (pubkey == null || pubkey is! String) { throw FormatException('Invalid or missing pubkey in JSON'); } return Peer( publicKey: pubkey, ); }
4-6: 🛠️ Refactor suggestion
Add public key validation
Consider adding validation for the public key format in the constructor to ensure data integrity, especially since this is used in a cryptocurrency context.
class Peer implements Content { final String publicKey; - Peer({required this.publicKey}); + Peer({required this.publicKey}) { + if (publicKey.isEmpty || publicKey.length != 64 || !RegExp(r'^[0-9a-f]+$').hasMatch(publicKey)) { + throw FormatException('Invalid public key format'); + } + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final String publicKey; Peer({required this.publicKey}) { if (publicKey.isEmpty || publicKey.length != 64 || !RegExp(r'^[0-9a-f]+$').hasMatch(publicKey)) { throw FormatException('Invalid public key format'); } }
15-21: 🛠️ Refactor suggestion
Restructure JSON format for better compatibility
The current JSON structure using the type getter as a key is unusual and could cause issues with serialization/deserialization in different contexts.
@override Map<String, dynamic> toJson() { return { - type: { - 'pubkey': publicKey, - } + 'type': type, + 'pubkey': publicKey, }; }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.Map<String, dynamic> toJson() { return { 'type': type, 'pubkey': publicKey, }; }lib/data/models/payment_request.dart (2)
12-23: 🛠️ Refactor suggestion
Improve type safety and performance in toJson method.
The current implementation has several issues:
- Uses dynamic typing where it could be more specific
- Makes multiple calls to the type getter
- Lacks null safety when accessing the array
Suggested implementation:
@override Map<String, dynamic> toJson() { + final typeKey = type; + final List<dynamic> values = []; + + values.add(order?.toJson()); + values.add(lnInvoice); + + if (amount != null) { + values.add(amount); + } + final result = { - type: [order?.toJson(), lnInvoice] + typeKey: values }; - - if (amount != null) { - result[type]!.add(amount); - } return result; }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Map<String, dynamic> toJson() { final typeKey = type; final List<dynamic> values = []; values.add(order?.toJson()); values.add(lnInvoice); if (amount != null) { values.add(amount); } final result = { typeKey: values }; return result; }
9-10: 🛠️ Refactor suggestion
Revise constructor parameter requirements.
The constructor marks all nullable fields as required parameters, which is contradictory. Consider making them optional or adding validation.
Suggested implementation:
- PaymentRequest( - {required this.order, required this.lnInvoice, required this.amount}); + PaymentRequest({ + this.order, + this.lnInvoice, + this.amount, + }) { + // At least one parameter should be non-null + if (order == null && lnInvoice == null && amount == null) { + throw ArgumentError('At least one parameter must be provided'); + } + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.PaymentRequest({ this.order, this.lnInvoice, this.amount, }) { // At least one parameter should be non-null if (order == null && lnInvoice == null && amount == null) { throw ArgumentError('At least one parameter must be provided'); } }lib/presentation/order/bloc/order_details_state.dart (1)
8-8: 🛠️ Refactor suggestion
Consider adding type validation for NostrEvent
The transition from
OrderModel?toNostrEvent?makes the state more generic. Since NostrEvent could contain various types of events, consider adding validation to ensure only order-related events are stored.+ /// Validates if the NostrEvent represents a valid order + bool get isValidOrderEvent => + order?.kind == /* expected kind */ && + order?.tags.any((tag) => tag[0] == /* expected tag */);Committable suggestion skipped: line range outside the PR's diff.
lib/services/yadio_exchange_service.dart (3)
6-19:
⚠️ Potential issueAdd robust error handling and input validation
The current implementation has several potential issues:
- Missing input validation for currency parameters
- Unsafe type casting of the rate value
- Generic error message doesn't provide context
Consider implementing these improvements:
@override Future<double> getExchangeRate( String fromCurrency, String toCurrency, ) async { + if (fromCurrency.isEmpty || toCurrency.isEmpty) { + throw ArgumentError('Currency codes cannot be empty'); + } + final endpoint = 'rate/$fromCurrency/$toCurrency'; - final data = await getRequest(endpoint); + try { + final data = await getRequest(endpoint); + + final rate = data['rate']; + if (rate == null) { + throw Exception('Rate not found for $fromCurrency to $toCurrency'); + } + + if (rate is! num) { + throw Exception('Invalid rate format received from API'); + } - if (data.containsKey('rate')) { - return (data['rate'] as num).toDouble(); - } else { - throw Exception('Exchange rate not found in response'); - } + return rate.toDouble(); + } catch (e) { + throw Exception('Failed to fetch exchange rate: $e'); + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Future<double> getExchangeRate( String fromCurrency, String toCurrency, ) async { if (fromCurrency.isEmpty || toCurrency.isEmpty) { throw ArgumentError('Currency codes cannot be empty'); } final endpoint = 'rate/$fromCurrency/$toCurrency'; try { final data = await getRequest(endpoint); final rate = data['rate']; if (rate == null) { throw Exception('Rate not found for $fromCurrency to $toCurrency'); } if (rate is! num) { throw Exception('Invalid rate format received from API'); } return rate.toDouble(); } catch (e) { throw Exception('Failed to fetch exchange rate: $e'); } }
21-28:
⚠️ Potential issueImprove error handling and response validation
The implementation needs better error handling and response validation. Also, there are unnecessary blank lines in the code.
Apply these improvements:
@override Future<Map<String, String>> getCurrencyCodes() async { final endpoint = 'currencies'; - final data = await getRequest(endpoint); - - return data.map((key, value) => MapEntry(key, value.toString())); - + try { + final data = await getRequest(endpoint); + + return Map.fromEntries( + data.entries.map((entry) { + if (entry.key is! String) { + throw Exception('Invalid currency code format'); + } + return MapEntry(entry.key, entry.value?.toString() ?? ''); + }), + ); + } catch (e) { + throw Exception('Failed to fetch currency codes: $e'); + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Future<Map<String, String>> getCurrencyCodes() async { final endpoint = 'currencies'; try { final data = await getRequest(endpoint); return Map.fromEntries( data.entries.map((entry) { if (entry.key is! String) { throw Exception('Invalid currency code format'); } return MapEntry(entry.key, entry.value?.toString() ?? ''); }), ); } catch (e) { throw Exception('Failed to fetch currency codes: $e'); } }
1-29: 💡 Codebase verification
Based on the comprehensive analysis of the codebase, I can now provide the final response:
Basic error handling exists, but rate limiting needs attention
The implementation has basic error handling through the
ExchangeRateNotifier, but some improvements are recommended:
- The Yadio API integration lacks rate limiting protection and retry logic
- Error states are properly propagated through the
AsyncValuepattern- The UI gracefully handles loading and error states
Recommendations:
- Add HTTP client timeout configuration in
ExchangeService.getRequest- Implement exponential backoff retry logic for failed requests
- Consider caching exchange rates to reduce API calls
- Add API version to the base URL for future compatibility
🔗 Analysis chain
Verify API compatibility and rate limits
Since this service is crucial for exchange functionality:
- Verify if the Yadio API has rate limits that could affect the application
- Consider implementing retry logic and rate limiting
- Document the API version and compatibility requirements
Let's check if there are any other exchange rate services in use:
Let's examine the related files to understand the exchange rate implementation better.
Let's check the order details screen to see how the exchange rate is used in the UI and if there's any retry or error handling logic implemented.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for other exchange rate implementations or API calls rg -l "exchange.*rate|rate.*exchange" --type dart # Look for any configuration related to exchange rates rg -l "yadio|exchange.*config|rate.*config" --type dartLength of output: 320
Script:
#!/bin/bash # Check exchange service interface and other implementations cat lib/services/exchange_service.dart # Check how the service is provided/configured cat lib/providers/exchange_service_provider.dart # Look for error handling patterns in order model cat lib/data/models/order_model.dartLength of output: 8216
Script:
#!/bin/bash # Check order details screen implementation cat lib/presentation/order/screens/order_details_screen.dart # Look for any retry logic or error handling patterns rg "retry|backoff|delay" --type dartLength of output: 12159
lib/presentation/add_order/bloc/add_order_state.dart (2)
10-10: 🛠️ Refactor suggestion
Consider making currency field required
Given that currency is a critical component for buy/sell orders, consider making this field non-nullable to prevent potential runtime issues. This would enforce currency specification at compile-time.
- final String? currency; + final String currency;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final String currency;
16-16: 🛠️ Refactor suggestion
Align constructor with required currency field
If the currency field becomes required, update the constructor to require it:
- this.currency, + required this.currency,Committable suggestion skipped: line range outside the PR's diff.
lib/providers/riverpod_providers.dart (2)
19-23: 🛠️ Refactor suggestion
Improve dependency handling in MostroService provider
The current implementation has two potential issues:
- Using
ref.readinstead ofref.watchmeans the provider won't react to changes in its dependencies- No error handling for dependency initialization
final mostroServiceProvider = Provider<MostroService>((ref) { - final sessionStorage = ref.read(sessionManagerProvider); - final nostrService = ref.read(nostrServicerProvider); + final sessionStorage = ref.watch(sessionManagerProvider); + final nostrService = ref.watch(nostrServiceProvider); + + ref.onDispose(() { + // Clean up resources if needed + }); + return MostroService(nostrService, sessionStorage); });Also consider adding a state provider to track service status:
final mostroServiceStatusProvider = StateProvider<ServiceStatus>((ref) { return ServiceStatus.initializing; });
7-9: 🛠️ Refactor suggestion
Improve NostrService initialization pattern
The current implementation immediately calls
init()during provider creation, which could lead to several issues:
- No error handling for initialization failures
- No way to retry initialization
- Synchronous initialization might block the UI
Consider separating initialization:
-final nostrServicerProvider = Provider<NostrService>((ref) { - return NostrService()..init(); -}); +final nostrServiceProvider = Provider<NostrService>((ref) { + return NostrService(); +}); + +final nostrServiceInitializerProvider = FutureProvider<void>((ref) async { + final service = ref.read(nostrServiceProvider); + try { + await service.init(); + } catch (e) { + // Handle initialization errors + throw Exception('Failed to initialize NostrService: $e'); + } +});📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final nostrServiceProvider = Provider<NostrService>((ref) { return NostrService(); }); final nostrServiceInitializerProvider = FutureProvider<void>((ref) async { final service = ref.read(nostrServiceProvider); try { await service.init(); } catch (e) { // Handle initialization errors throw Exception('Failed to initialize NostrService: $e'); } });lib/providers/exchange_service_provider.dart (1)
16-19: 🛠️ Refactor suggestion
Implement caching and retry mechanism for currency codes
Currency codes rarely change and should be cached to avoid unnecessary API calls. Additionally, consider implementing a retry mechanism for network failures.
-final currencyCodesProvider = FutureProvider<Map<String, String>>((ref) async { +final currencyCodesProvider = FutureProvider<Map<String, String>>((ref) async { final exchangeService = ref.read(exchangeServiceProvider); - return await exchangeService.getCurrencyCodes(); + try { + // Add caching using shared_preferences or other storage + final cached = await ref.read(cacheProvider).getCurrencyCodes(); + if (cached != null) return cached; + + final codes = await exchangeService.getCurrencyCodes(); + await ref.read(cacheProvider).setCurrencyCodes(codes); + return codes; + } catch (e) { + // Implement retry logic for network failures + throw Exception('Failed to fetch currency codes: $e'); + } });Committable suggestion skipped: line range outside the PR's diff.
lib/data/models/mostro_message.dart (2)
26-30:
⚠️ Potential issueCritical: Add proper error handling and content deserialization.
The current implementation has several critical issues:
- No error handling for JSON decoding
- Missing validation of required fields
- Content deserialization is not implemented
- Type parameter T is not utilized
- factory MostroMessage.deserialized(String data) { + factory MostroMessage<T>.deserialized(String data, T Function(Map<String, dynamic>) fromJson) { + try { final decoded = jsonDecode(data); - final event = decoded as Map<String, dynamic>; - return MostroMessage(action: Action.fromString(event['order']['action']), requestId: event['order']['id']); + final event = decoded as Map<String, dynamic>; + final order = event['order'] as Map<String, dynamic>? + ?? throw FormatException('Missing order object'); + + final action = order['action'] as String? + ?? throw FormatException('Missing action field'); + final id = order['id'] as String? + ?? throw FormatException('Missing id field'); + + T? content; + if (order['content'] != null) { + content = fromJson(order['content'] as Map<String, dynamic>); + } + + return MostroMessage<T>( + action: Action.fromString(action), + requestId: id, + content: content, + ); + } catch (e) { + throw FormatException('Failed to deserialize MostroMessage: $e'); + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.factory MostroMessage<T>.deserialized(String data, T Function(Map<String, dynamic>) fromJson) { try { final decoded = jsonDecode(data); final event = decoded as Map<String, dynamic>; final order = event['order'] as Map<String, dynamic>? ?? throw FormatException('Missing order object'); final action = order['action'] as String? ?? throw FormatException('Missing action field'); final id = order['id'] as String? ?? throw FormatException('Missing id field'); T? content; if (order['content'] != null) { content = fromJson(order['content'] as Map<String, dynamic>); } return MostroMessage<T>( action: Action.fromString(action), requestId: id, content: content, ); } catch (e) { throw FormatException('Failed to deserialize MostroMessage: $e'); } }
15-24: 💡 Codebase verification
🛠️ Refactor suggestion
The 'order' wrapper is correct, but null safety improvements recommended
The search results confirm that:
- The 'order' wrapper is the correct protocol format, as evidenced by consistent usage in
mostro_service.dartacross multiple message types.- The protocol version is correctly handled using the
mostroVersionconstant.Recommended changes for robustness:
Map<String, dynamic> toJson() { + try { return { 'order': { 'version': mostroVersion, - 'id': requestId, + 'id': requestId ?? '', // Consistent with other service calls 'action': action.value, - 'content': content?.toJson(), + 'content': content?.toJson() ?? const {}, // Prevent null content }, }; + } catch (e) { + throw FormatException('Failed to serialize MostroMessage: $e'); + } }🔗 Analysis chain
Verify JSON structure and add error handling.
The current implementation has several concerns:
- The 'order' wrapper seems arbitrary - verify if this matches the Mostro protocol specification.
- Missing null safety handling for requestId.
- No error handling for content serialization failures.
Map<String, dynamic> toJson() { + try { return { 'order': { 'version': mostroVersion, - 'id': requestId, + 'id': requestId ?? '', // Provide default or throw if required 'action': action.value, - 'content': content?.toJson(), + 'content': content?.toJson() ?? const {}, }, }; + } catch (e) { + throw FormatException('Failed to serialize MostroMessage: $e'); + } }
The previous search was too specific. Let's broaden our search to understand:
- The Mostro message class definition and related classes
- General JSON serialization patterns in the codebase
- Any documentation about the protocol format
Let's try to find:
- Other JSON serialization patterns with fixed regex
- Message parsing/deserialization logic that might reveal the expected format
- Protocol-related constants or configurations
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for other JSON serialization patterns in the codebase rg -l 'toJson.*order.*version' --type dartLength of output: 44
Script:
#!/bin/bash # Let's try a broader search for Mostro-related JSON patterns rg -A 5 'class.*Mostro.*Message' --type dart # Also search for any order-related JSON serialization rg -A 5 'toJson.*{' --type dart # Look for protocol or message format documentation fd -e md -e txt . | xargs rg -i "mostro.*protocol|message.*format"Length of output: 590
Script:
#!/bin/bash # Fix the regex and search for JSON serialization patterns rg -A 5 'toJson\(\).*{' --type dart # Look for any Mostro message parsing or handling rg -A 5 'fromJson|parse.*Mostro' --type dart # Search for any Mostro protocol constants or configurations rg -B 2 -A 2 'mostroVersion|Mostro.*Protocol' --type dartLength of output: 7372
lib/providers/event_store_providers.dart (4)
11-14: 🛠️ Refactor suggestion
Update provider reference name
Update the reference to match the corrected provider name suggested above.
final orderRepositoryProvider = Provider((ref) { - final nostrService = ref.read(nostrServicerProvider); + final nostrService = ref.read(nostrServiceProvider); return OpenOrdersRepository(nostrService); });📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final orderRepositoryProvider = Provider((ref) { final nostrService = ref.read(nostrServiceProvider); return OpenOrdersRepository(nostrService); });
7-9: 🛠️ Refactor suggestion
Fix provider naming and add error handling
- The provider name has a typo:
nostrServicerProvidershould benostrServiceProvider- The
init()call should include error handling to gracefully handle initialization failures-final nostrServicerProvider = Provider<NostrService>((ref) { - return NostrService()..init(); +final nostrServiceProvider = Provider<NostrService>((ref) { + final service = NostrService(); + try { + service.init(); + } catch (e) { + throw Exception('Failed to initialize NostrService: $e'); + } + return service; });📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final nostrServiceProvider = Provider<NostrService>((ref) { final service = NostrService(); try { service.init(); } catch (e) { throw Exception('Failed to initialize NostrService: $e'); } return service; });
16-26: 🛠️ Refactor suggestion
Add documentation and proper subscription cleanup
Several improvements are needed for better maintainability and resource management:
- Document the purpose of event kind 38383
- Add proper subscription cleanup
- Consider making the filter duration configurable
+/// Event kind 38383 represents order events in the Nostr protocol +const orderEventKind = 38383; +const orderFilterDurationHours = 24; final orderEventsProvider = StreamProvider<List<NostrEvent>>((ref) { final orderRepository = ref.watch(orderRepositoryProvider); - DateTime filterTime = DateTime.now().subtract(Duration(hours: 24)); + DateTime filterTime = DateTime.now().subtract(Duration(hours: orderFilterDurationHours)); var filter = NostrFilter( - kinds: const [38383], + kinds: const [orderEventKind], since: filterTime, ); orderRepository.subscribe(filter); + ref.onDispose(() { + orderRepository.unsubscribe(filter); + }); return orderRepository.eventsStream; });📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// Event kind 38383 represents order events in the Nostr protocol const orderEventKind = 38383; const orderFilterDurationHours = 24; final orderEventsProvider = StreamProvider<List<NostrEvent>>((ref) { final orderRepository = ref.watch(orderRepositoryProvider); DateTime filterTime = DateTime.now().subtract(Duration(hours: orderFilterDurationHours)); var filter = NostrFilter( kinds: const [orderEventKind], since: filterTime, ); orderRepository.subscribe(filter); ref.onDispose(() { orderRepository.unsubscribe(filter); }); return orderRepository.eventsStream; });
16-26: 💡 Codebase verification
Add event validation in the order events pipeline
The codebase has signature verification capabilities (
NostrUtils.verifySignature), but it's not being used in the order events processing pipeline. Events from the Nostr network are directly forwarded to subscribers without validation.Required changes:
- Implement signature verification in
OpenOrdersRepository.subscribebefore adding events to the stream- Add rate limiting for event processing
- Utilize the existing logging infrastructure for security monitoring
Example locations requiring changes:
lib/data/repositories/open_orders_repository.dart: Add event validationlib/services/nostr_service.dart: Consider adding rate limiting at the service level🔗 Analysis chain
Consider additional security measures for order events
Given that this code handles financial transactions (buy/sell orders), consider implementing additional security measures:
- Validate event signatures
- Add rate limiting
- Implement event source verification
- Add logging for security monitoring
Let's check if there are any security measures implemented elsewhere:
Let me gather more context about the event verification implementation:
Let me check the NostrService implementation to see how events are processed before being added to the stream:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for security-related implementations rg -i "signature|verify|rate.?limit|security" --type dart # Check for logging implementations rg -i "log\.|logger\.|logging" --type dartLength of output: 1229
Script:
#!/bin/bash # Check NostrUtils implementation for signature verification cat lib/core/utils/nostr_utils.dart # Check if signature verification is used in event processing ast-grep --pattern 'verifySignature($$$)' # Check order repository implementation fd "order.*repository" --type f --exec cat {}Length of output: 8381
Script:
#!/bin/bash # Check NostrService implementation cat lib/services/nostr_service.dart # Look for event validation or processing ast-grep --pattern 'class NostrService { $$$ subscribeToEvents($$$) { $$$ } $$$ }'Length of output: 3257
lib/data/models/conversion_result.dart (2)
24-42: 🛠️ Refactor suggestion
Enhance data validation and add missing implementations
The
ConversionRequestclass needs improvements in validation and completeness:
- No validation for currency codes
- No validation for amount (could be negative)
- Missing
toJsonmethod- Missing documentation
- Missing common data class methods
Consider applying these improvements:
+ /// Represents a request to convert between currencies. class ConversionRequest { + /// The amount to convert in the smallest unit of the currency final int amount; + /// The currency code to convert from (ISO 4217) final String from; + /// The currency code to convert to (ISO 4217) final String to; ConversionRequest({ required this.amount, required this.from, required this.to, - }); + }) { + if (amount < 0) { + throw ArgumentError('Amount cannot be negative'); + } + if (from.length != 3 || to.length != 3) { + throw ArgumentError('Currency codes must be 3 characters (ISO 4217)'); + } + } factory ConversionRequest.fromJson(Map<String, dynamic> json) { + final amount = json['amount'] as int?; + final from = json['from'] as String?; + final to = json['to'] as String?; + + if (amount == null || from == null || to == null) { + throw FormatException('Missing required fields'); + } + return ConversionRequest( - amount: json['amount'], - from: json['from'], - to: json['to'], + amount: amount, + from: from.toUpperCase(), + to: to.toUpperCase(), ); } + + Map<String, dynamic> toJson() => { + 'amount': amount, + 'from': from, + 'to': to, + }; + + @override + bool operator ==(Object other) => + identical(this, other) || + other is ConversionRequest && + amount == other.amount && + from == other.from && + to == other.to; + + @override + int get hashCode => Object.hash(amount, from, to); + + @override + String toString() => 'ConversionRequest(' + 'amount: $amount, ' + 'from: $from, ' + 'to: $to)'; }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// Represents a request to convert between currencies. class ConversionRequest { /// The amount to convert in the smallest unit of the currency final int amount; /// The currency code to convert from (ISO 4217) final String from; /// The currency code to convert to (ISO 4217) final String to; ConversionRequest({ required this.amount, required this.from, required this.to, }) { if (amount < 0) { throw ArgumentError('Amount cannot be negative'); } if (from.length != 3 || to.length != 3) { throw ArgumentError('Currency codes must be 3 characters (ISO 4217)'); } } factory ConversionRequest.fromJson(Map<String, dynamic> json) { final amount = json['amount'] as int?; final from = json['from'] as String?; final to = json['to'] as String?; if (amount == null || from == null || to == null) { throw FormatException('Missing required fields'); } return ConversionRequest( amount: amount, from: from.toUpperCase(), to: to.toUpperCase(), ); } Map<String, dynamic> toJson() => { 'amount': amount, 'from': from, 'to': to, }; @override bool operator ==(Object other) => identical(this, other) || other is ConversionRequest && amount == other.amount && from == other.from && to == other.to; @override int get hashCode => Object.hash(amount, from, to); @override String toString() => 'ConversionRequest(' 'amount: $amount, ' 'from: $from, ' 'to: $to)'; }
1-22: 🛠️ Refactor suggestion
Add serialization and data class essentials
The
ConversionResultclass needs additional implementations for proper data handling:
- Missing
toJsonmethod for serialization- No null safety checks in
fromJson- No validation for timestamp
- Missing documentation
- Missing common data class methods (equals, hashCode, toString)
Consider applying these improvements:
+ /// Represents the result of a currency conversion operation. class ConversionResult { + /// The original conversion request final ConversionRequest request; + /// The converted amount final double result; + /// The conversion rate used final double rate; + /// Unix timestamp of when the conversion was performed final int timestamp; ConversionResult({ required this.request, required this.result, required this.rate, required this.timestamp, - }); + }) { + if (timestamp < 0) { + throw ArgumentError('Timestamp cannot be negative'); + } + } factory ConversionResult.fromJson(Map<String, dynamic> json) { + if (json['request'] == null) { + throw FormatException('Missing required field: request'); + } return ConversionResult( request: ConversionRequest.fromJson(json['request']), - result: (json['result'] as num).toDouble(), - rate: (json['rate'] as num).toDouble(), - timestamp: json['timestamp'], + result: (json['result'] as num?)?.toDouble() ?? 0.0, + rate: (json['rate'] as num?)?.toDouble() ?? 0.0, + timestamp: json['timestamp'] as int? ?? + throw FormatException('Missing or invalid timestamp'), ); } + + Map<String, dynamic> toJson() => { + 'request': request.toJson(), + 'result': result, + 'rate': rate, + 'timestamp': timestamp, + }; + + @override + bool operator ==(Object other) => + identical(this, other) || + other is ConversionResult && + request == other.request && + result == other.result && + rate == other.rate && + timestamp == other.timestamp; + + @override + int get hashCode => Object.hash(request, result, rate, timestamp); + + @override + String toString() => 'ConversionResult(' + 'request: $request, ' + 'result: $result, ' + 'rate: $rate, ' + 'timestamp: $timestamp)'; }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// Represents the result of a currency conversion operation. class ConversionResult { /// The original conversion request final ConversionRequest request; /// The converted amount final double result; /// The conversion rate used final double rate; /// Unix timestamp of when the conversion was performed final int timestamp; ConversionResult({ required this.request, required this.result, required this.rate, required this.timestamp, }) { if (timestamp < 0) { throw ArgumentError('Timestamp cannot be negative'); } } factory ConversionResult.fromJson(Map<String, dynamic> json) { if (json['request'] == null) { throw FormatException('Missing required field: request'); } return ConversionResult( request: ConversionRequest.fromJson(json['request']), result: (json['result'] as num?)?.toDouble() ?? 0.0, rate: (json['rate'] as num?)?.toDouble() ?? 0.0, timestamp: json['timestamp'] as int? ?? throw FormatException('Missing or invalid timestamp'), ); } Map<String, dynamic> toJson() => { 'request': request.toJson(), 'result': result, 'rate': rate, 'timestamp': timestamp, }; @override bool operator ==(Object other) => identical(this, other) || other is ConversionResult && request == other.request && result == other.result && rate == other.rate && timestamp == other.timestamp; @override int get hashCode => Object.hash(request, result, rate, timestamp); @override String toString() => 'ConversionResult(' 'request: $request, ' 'result: $result, ' 'rate: $rate, ' 'timestamp: $timestamp)'; }lib/data/repositories/open_orders_repository.dart (2)
26-28:
⚠️ Potential issueEnsure complete resource cleanup in dispose.
The dispose method should clean up all resources, including the subscription and events map.
void dispose() { + _subscription?.cancel(); _eventStreamController.close(); + _events.clear(); }Committable suggestion skipped: line range outside the PR's diff.
18-24:
⚠️ Potential issueAdd error handling and subscription management.
The current implementation has several potential issues:
- No error handling for the event stream
- No way to unsubscribe from events
- No validation of the filter parameter
Consider implementing this improved version:
+ StreamSubscription<NostrEvent>? _subscription; + + /// Subscribes to events matching the given filter. + /// + /// @param filter The filter criteria for events. + /// @throws ArgumentError if filter is null void subscribe(NostrFilter filter) { + ArgumentError.checkNotNull(filter, 'filter'); + + // Cancel existing subscription if any + _subscription?.cancel(); + - _nostrService.subscribeToEvents(filter).listen((event) { + _subscription = _nostrService.subscribeToEvents(filter).listen( + (event) { final key = '${event.kind}-${event.pubkey}-${event.orderId}'; _events[key] = event; _eventStreamController.add(_events.values.toList()); - }); + }, + onError: (error) { + // Log error and optionally notify listeners + print('Error in order subscription: $error'); + } + ); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.StreamSubscription<NostrEvent>? _subscription; /// Subscribes to events matching the given filter. /// /// @param filter The filter criteria for events. /// @throws ArgumentError if filter is null void subscribe(NostrFilter filter) { ArgumentError.checkNotNull(filter, 'filter'); // Cancel existing subscription if any _subscription?.cancel(); _subscription = _nostrService.subscribeToEvents(filter).listen( (event) { final key = '${event.kind}-${event.pubkey}-${event.orderId}'; _events[key] = event; _eventStreamController.add(_events.values.toList()); }, onError: (error) { // Log error and optionally notify listeners print('Error in order subscription: $error'); } ); }lib/data/models/session.dart (4)
38-39:
⚠️ Potential issueReconsider exposing private key through getter
Exposing the private key through a public getter method increases the risk of key misuse. Consider removing the
privateKeygetter or implementing secure key operations that don't expose the raw key material.- String get privateKey => keyPair.private; String get publicKey => keyPair.public;Committable suggestion skipped: line range outside the PR's diff.
22-27:
⚠️ Potential issueSecurity concern: Private key exposure in JSON
The
toJsonmethod includes the private key in its output, which could lead to key exposure if the JSON is logged or stored insecurely. Consider implementing secure serialization methods or documenting strict usage guidelines.Also, add a version field to support future format changes:
Map<String, dynamic> toJson() => { + 'version': 1, 'sessionId': sessionId, 'startTime': startTime.toIso8601String(), - 'privateKey': keyPair.private, + 'privateKey': '<<redacted>>', // Consider secure alternatives 'eventId' : eventId, };Committable suggestion skipped: line range outside the PR's diff.
15-20:
⚠️ Potential issueAdd input validation in constructor
Given this class handles financial transaction sessions, it should validate input parameters to ensure data integrity and security.
Add validation in the constructor:
Session({ required this.sessionId, required this.startTime, required this.keyPair, this.eventId, - }); + }) { + if (sessionId.isEmpty) { + throw ArgumentError('sessionId cannot be empty'); + } + if (startTime.isAfter(DateTime.now().add(const Duration(hours: 48)))) { + throw ArgumentError('startTime cannot be more than 48 hours in the future'); + } + if (startTime.isBefore(DateTime.now().subtract(const Duration(hours: 48)))) { + throw ArgumentError('startTime cannot be more than 48 hours in the past'); + } + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.Session({ required this.sessionId, required this.startTime, required this.keyPair, this.eventId, }) { if (sessionId.isEmpty) { throw ArgumentError('sessionId cannot be empty'); } if (startTime.isAfter(DateTime.now().add(const Duration(hours: 48)))) { throw ArgumentError('startTime cannot be more than 48 hours in the future'); } if (startTime.isBefore(DateTime.now().subtract(const Duration(hours: 48)))) { throw ArgumentError('startTime cannot be more than 48 hours in the past'); } }
29-36:
⚠️ Potential issueAdd robust error handling in fromJson
The
fromJsonfactory lacks error handling for malformed input and version checking. This could lead to runtime errors or security issues.Add error handling:
factory Session.fromJson(Map<String, dynamic> json) { + final version = json['version'] as int?; + if (version == null || version > 1) { + throw FormatException('Unsupported session format version'); + } + + final sessionId = json['sessionId'] as String?; + final startTimeStr = json['startTime'] as String?; + final privateKey = json['privateKey'] as String?; + + if (sessionId == null || startTimeStr == null || privateKey == null) { + throw FormatException('Missing required fields in session JSON'); + } + return Session( - sessionId: json['sessionId'], - startTime: DateTime.parse(json['startTime']), - keyPair: NostrKeyPairs(private: json['privateKey']), + sessionId: sessionId, + startTime: DateTime.parse(startTimeStr), + keyPair: NostrKeyPairs(private: privateKey), eventId: json['eventId'], ); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.factory Session.fromJson(Map<String, dynamic> json) { final version = json['version'] as int?; if (version == null || version > 1) { throw FormatException('Unsupported session format version'); } final sessionId = json['sessionId'] as String?; final startTimeStr = json['startTime'] as String?; final privateKey = json['privateKey'] as String?; if (sessionId == null || startTimeStr == null || privateKey == null) { throw FormatException('Missing required fields in session JSON'); } return Session( sessionId: sessionId, startTime: DateTime.parse(startTimeStr), keyPair: NostrKeyPairs(private: privateKey), eventId: json['eventId'], ); }lib/data/repositories/mostro_repository.dart (1)
18-32: 🛠️ Refactor suggestion
⚠️ Potential issueImplementation incomplete: Add error handling and documentation
The commented-out implementation needs attention in several areas:
- Missing error handling for null recipient
- No documentation for the expected filter format
- Potential memory leak with the StreamController
Consider this improved implementation:
+ /// Subscribes to Nostr events matching the given filter. + /// + /// @param filter NostrFilter defining the subscription criteria + /// @throws Exception if subscription fails void subscribe(NostrFilter filter) { + if (filter.isEmpty) { + throw ArgumentError('Filter cannot be empty'); + } //_nostrService.subscribeToEvents(filter).listen( + // onError: (error) { + // _eventStreamController.addError(error); + // }, + // onDone: () { + // // Consider if you need to clean up resources + // }, // (event) async { // final recipient = event.recipient; + // if (recipient == null) { + // return; + // } // ... rest of the implementation // } //); } + /// Cleanup method to dispose of resources + void dispose() { + _eventStreamController.close(); + }Committable suggestion skipped: line range outside the PR's diff.
lib/services/exchange_service.dart (2)
1-44:
⚠️ Potential issueAddress security concerns for handling financial data
Since this service handles financial data and makes external HTTP requests, consider implementing these security measures:
- Add SSL/TLS certificate verification
- Implement rate limiting to prevent API abuse
- Add input validation for currency codes
- Add logging for security-relevant events
Given that this is an alpha preview (as mentioned in PR objectives), these security measures should be implemented before moving towards production readiness.
22-44: 🛠️ Refactor suggestion
Enhance error handling and HTTP request management
The abstract class provides a good foundation but could benefit from more robust error handling and HTTP request management:
- Add timeout handling for requests
- Validate baseUrl in constructor
- Add retry mechanism for transient failures
- Improve error handling with specific exceptions
- Add HTTP headers management
Here's a suggested improvement:
abstract class ExchangeService { final String baseUrl; + final Duration timeout; + final Map<String, String> defaultHeaders; - ExchangeService(this.baseUrl); + ExchangeService( + this.baseUrl, { + this.timeout = const Duration(seconds: 30), + this.defaultHeaders = const {'Accept': 'application/json'}, + }) { + if (baseUrl.isEmpty) { + throw ArgumentError('baseUrl cannot be empty'); + } + if (!baseUrl.startsWith('http')) { + throw ArgumentError('baseUrl must start with http:// or https://'); + } + } Future<double> getExchangeRate( String fromCurrency, String toCurrency, ); Future<Map<String, dynamic>> getRequest(String endpoint) async { final url = Uri.parse('$baseUrl$endpoint'); - final response = await http.get(url); + try { + final response = await http + .get(url, headers: defaultHeaders) + .timeout(timeout); - if (response.statusCode == 200) { - return json.decode(response.body) as Map<String, dynamic>; - } else { - throw Exception('Failed to load data: ${response.statusCode}'); + if (response.statusCode == 200) { + return json.decode(response.body) as Map<String, dynamic>; + } + + throw HttpException( + 'Failed to load data: ${response.statusCode}', + uri: url, + ); + } on TimeoutException { + throw HttpException('Request timed out', uri: url); + } on FormatException catch (e) { + throw HttpException('Invalid response format: ${e.message}', uri: url); + } catch (e) { + throw HttpException('Request failed: $e', uri: url); } } Future<Map<String, String>> getCurrencyCodes();Additionally, since this is an alpha preview as mentioned in the PR objectives, consider adding a warning comment:
+/// WARNING: This is an alpha preview implementation. +/// Not intended for production use. abstract class ExchangeService {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// WARNING: This is an alpha preview implementation. /// Not intended for production use. abstract class ExchangeService { final String baseUrl; final Duration timeout; final Map<String, String> defaultHeaders; ExchangeService( this.baseUrl, { this.timeout = const Duration(seconds: 30), this.defaultHeaders = const {'Accept': 'application/json'}, }) { if (baseUrl.isEmpty) { throw ArgumentError('baseUrl cannot be empty'); } if (!baseUrl.startsWith('http')) { throw ArgumentError('baseUrl must start with http:// or https://'); } } Future<double> getExchangeRate( String fromCurrency, String toCurrency, ); Future<Map<String, dynamic>> getRequest(String endpoint) async { final url = Uri.parse('$baseUrl$endpoint'); try { final response = await http .get(url, headers: defaultHeaders) .timeout(timeout); if (response.statusCode == 200) { return json.decode(response.body) as Map<String, dynamic>; } throw HttpException( 'Failed to load data: ${response.statusCode}', uri: url, ); } on TimeoutException { throw HttpException('Request timed out', uri: url); } on FormatException catch (e) { throw HttpException('Invalid response format: ${e.message}', uri: url); } catch (e) { throw HttpException('Request failed: $e', uri: url); } } Future<Map<String, String>> getCurrencyCodes(); }lib/presentation/widgets/currency_text_field.dart (1)
12-41: 🛠️ Refactor suggestion
Several improvements needed for production readiness
While the basic implementation is functional, consider the following essential improvements:
- Add locale-aware decimal separator handling
- Implement maximum value constraints to prevent overflow
- Consider handling negative values based on business requirements
- Move colors to theme constants
- Add accessibility support
Here's a suggested implementation:
@override Widget build(BuildContext context) { + final theme = Theme.of(context); return Container( padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8), decoration: BoxDecoration( - color: const Color(0xFF1D212C), + color: theme.colorScheme.surface, borderRadius: BorderRadius.circular(8), ), child: TextFormField( controller: controller, keyboardType: TextInputType.numberWithOptions(decimal: true), + maxLength: 10, // Prevent unreasonably large inputs inputFormatters: [ CurrencyInputFormatter(), - FilteringTextInputFormatter.allow(RegExp(r'^\d*\.?\d*')), + FilteringTextInputFormatter.allow(RegExp(r'^\d*[.,]?\d*$')), ], - style: const TextStyle(color: Colors.white), + style: theme.textTheme.bodyLarge?.copyWith( + color: theme.colorScheme.onSurface, + ), + semanticsLabel: 'Enter $label amount', decoration: InputDecoration( border: InputBorder.none, labelText: label, - labelStyle: const TextStyle(color: Colors.grey), + labelStyle: theme.textTheme.bodyMedium?.copyWith( + color: theme.colorScheme.onSurface.withOpacity(0.6), + ), ), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter a value'; } + final amount = double.tryParse(value.replaceAll(',', '')); + if (amount == null || amount <= 0) { + return 'Please enter a valid amount'; + } return null; }, ), ); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Widget build(BuildContext context) { final theme = Theme.of(context); return Container( padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8), decoration: BoxDecoration( color: theme.colorScheme.surface, borderRadius: BorderRadius.circular(8), ), child: TextFormField( controller: controller, keyboardType: TextInputType.numberWithOptions(decimal: true), maxLength: 10, // Prevent unreasonably large inputs inputFormatters: [ CurrencyInputFormatter(), FilteringTextInputFormatter.allow(RegExp(r'^\d*[.,]?\d*$')), ], style: theme.textTheme.bodyLarge?.copyWith( color: theme.colorScheme.onSurface, ), semanticsLabel: 'Enter $label amount', decoration: InputDecoration( border: InputBorder.none, labelText: label, labelStyle: theme.textTheme.bodyMedium?.copyWith( color: theme.colorScheme.onSurface.withOpacity(0.6), ), ), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter a value'; } final amount = double.tryParse(value.replaceAll(',', '')); if (amount == null || amount <= 0) { return 'Please enter a valid amount'; } return null; }, ), ); }lib/presentation/order/bloc/order_details_bloc.dart (2)
23-25:
⚠️ Potential issueCritical: Missing order cancellation service call.
The cancel operation only updates the UI state without actually cancelling the order with the Mostro service. This could lead to inconsistencies between the UI and the actual order state.
void _onCancelOrder(CancelOrder event, Emitter<OrderDetailsState> emit) { + try { + emit(state.copyWith(status: OrderDetailsStatus.loading)); + await mostroService.cancelOrder(state.order?.orderId); emit(state.copyWith(status: OrderDetailsStatus.cancelled)); + } catch (e) { + emit(state.copyWith( + status: OrderDetailsStatus.error, + errorMessage: 'Failed to cancel order: ${e.toString()}' + )); + } }Committable suggestion skipped: line range outside the PR's diff.
27-37: 💡 Codebase verification
⚠️ Potential issueAdd error handling for financial transactions
The review suggestion is valid. The code analysis reveals:
OrderDetailsStatealready haserrorMessagefield anderrorstatus- Service methods
takeBuyOrderandtakeSellOrderperform async operations that could fail- No error handling exists in the current implementation
Apply these improvements:
void _onContinueOrder( ContinueOrder event, Emitter<OrderDetailsState> emit) async { - emit(state.copyWith(status: OrderDetailsStatus.loading)); + try { + if (event.order.orderId == null || event.order.orderId!.isEmpty) { + throw ArgumentError('Invalid order ID'); + } + emit(state.copyWith(status: OrderDetailsStatus.loading)); if (event.order.orderType == OrderType.buy.value) { await mostroService.takeBuyOrder(event.order.orderId!); } else { await mostroService.takeSellOrder(event.order.orderId!); } emit(state.copyWith(status: OrderDetailsStatus.done)); + } catch (e) { + emit(state.copyWith( + status: OrderDetailsStatus.error, + errorMessage: 'Failed to process order: ${e.toString()}' + )); + } }🔗 Analysis chain
Add robust error handling and validation for financial transactions.
The current implementation lacks proper error handling and validation for financial transactions. Given that this code handles buy/sell orders, it needs to be more defensive.
Apply these improvements:
void _onContinueOrder( ContinueOrder event, Emitter<OrderDetailsState> emit) async { - emit(state.copyWith(status: OrderDetailsStatus.loading)); + try { + if (event.order.orderId == null || event.order.orderId!.isEmpty) { + throw ArgumentError('Invalid order ID'); + } + emit(state.copyWith(status: OrderDetailsStatus.loading)); if (event.order.orderType == OrderType.buy.value) { await mostroService.takeBuyOrder(event.order.orderId!); } else { await mostroService.takeSellOrder(event.order.orderId!); } emit(state.copyWith(status: OrderDetailsStatus.done)); + } catch (e) { + emit(state.copyWith( + status: OrderDetailsStatus.error, + errorMessage: 'Failed to process order: ${e.toString()}' + )); + } }🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check if MostroService methods properly handle errors ast-grep --pattern 'class MostroService { $$$ Future<$_> take$_Order($_) { $$$ } $$$ }'Length of output: 101
Script:
#!/bin/bash # Let's try a different approach to find MostroService implementation rg "class MostroService" -A 10 # Also search for takeBuyOrder and takeSellOrder methods rg "takeBuyOrder|takeSellOrder" -A 5Length of output: 2272
Script:
#!/bin/bash # Let's check if there's error handling in the state class rg "class OrderDetailsState" -A 10 # And check for error status definitions rg "enum OrderDetailsStatus" -A 5 # Also check if these service methods have any error handling rg -B 2 -A 10 "Future<void> take(Buy|Sell)Order"Length of output: 3128
lib/presentation/widgets/group_box.dart (1)
15-52: 🛠️ Refactor suggestion
Consider theme support and accessibility improvements.
While the implementation is functional, there are several areas that could be improved:
- The hard-coded white background color won't work with dark mode
- Magic numbers in positioning should be constants
- Limited theme customization options
- No support for text scaling
Consider applying these improvements:
class GroupBox extends StatelessWidget { + static const double _titleTopOffset = -10; + static const double _titleLeftOffset = 10; + static const double _contentPadding = 12.0; + static const double _borderRadius = 8.0; + static const double _borderWidth = 1.5; final String title; final Widget child; + final Color? backgroundColor; + final Color? borderColor; + final TextStyle? titleStyle; const GroupBox({ super.key, required this.title, required this.child, + this.backgroundColor, + this.borderColor, + this.titleStyle, }); @override Widget build(BuildContext context) { + final theme = Theme.of(context); return Stack( clipBehavior: Clip.none, children: [ Container( - padding: const EdgeInsets.all(12.0), + padding: const EdgeInsets.all(_contentPadding), decoration: BoxDecoration( - border: Border.all(color: Colors.grey, width: 1.5), - borderRadius: BorderRadius.circular(8), + color: backgroundColor ?? theme.cardColor, + border: Border.all( + color: borderColor ?? theme.dividerColor, + width: _borderWidth, + ), + borderRadius: BorderRadius.circular(_borderRadius), ), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ child, ], ), ), Positioned( - top: -10, - left: 10, + top: _titleTopOffset, + left: _titleLeftOffset, child: Container( padding: const EdgeInsets.symmetric(horizontal: 8.0), - color: Colors.white, + color: backgroundColor ?? theme.cardColor, child: Text( title, - style: TextStyle( - color: AppTheme.mostroGreen, - fontSize: 14, - fontWeight: FontWeight.bold, + style: titleStyle?.copyWith( + color: titleStyle?.color ?? AppTheme.mostroGreen, + ) ?? TextStyle( + color: AppTheme.mostroGreen, + fontSize: MediaQuery.textScaleFactorOf(context) * 14, + fontWeight: FontWeight.bold, ), ), ), ), ], ); } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.class GroupBox extends StatelessWidget { static const double _titleTopOffset = -10; static const double _titleLeftOffset = 10; static const double _contentPadding = 12.0; static const double _borderRadius = 8.0; static const double _borderWidth = 1.5; final String title; final Widget child; final Color? backgroundColor; final Color? borderColor; final TextStyle? titleStyle; const GroupBox({ super.key, required this.title, required this.child, this.backgroundColor, this.borderColor, this.titleStyle, }); @override Widget build(BuildContext context) { final theme = Theme.of(context); return Stack( clipBehavior: Clip.none, children: [ Container( padding: const EdgeInsets.all(_contentPadding), decoration: BoxDecoration( color: backgroundColor ?? theme.cardColor, border: Border.all( color: borderColor ?? theme.dividerColor, width: _borderWidth, ), borderRadius: BorderRadius.circular(_borderRadius), ), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ child, ], ), ), Positioned( top: _titleTopOffset, left: _titleLeftOffset, child: Container( padding: const EdgeInsets.symmetric(horizontal: 8.0), color: backgroundColor ?? theme.cardColor, child: Text( title, style: titleStyle?.copyWith( color: titleStyle?.color ?? AppTheme.mostroGreen, ) ?? TextStyle( color: AppTheme.mostroGreen, fontSize: MediaQuery.textScaleFactorOf(context) * 14, fontWeight: FontWeight.bold, ), ), ), ), ], ); } }test/models/order_test.dart (3)
38-39: 🛠️ Refactor suggestion
Add validation for JSON structure and error cases
The deep nesting in
jsonData['order']['order']['content']['order']suggests a complex structure that should be validated.Consider adding these test cases:
test('Should handle malformed JSON gracefully', () async { final malformedJson = {'order': {'content': {}}}; // missing structure expect( () => Order.fromJson(malformedJson), throwsA(isA<FormatException>()), ); }); test('Should validate required JSON fields', () async { final incompleteJson = { 'kind': 'sell', // missing other required fields }; expect( () => Order.fromJson(incompleteJson), throwsA(isA<FormatException>()), ); });
9-13: 🛠️ Refactor suggestion
Add error handling to the loadJson utility function
The function should handle potential file operation errors and JSON parsing failures gracefully.
Consider this improved implementation:
Future<Map<String, dynamic>> loadJson(String path) async { - final file = File(path); - final contents = await file.readAsString(); - return jsonDecode(contents); + try { + final file = File(path); + if (!await file.exists()) { + throw FileSystemException('File not found', path); + } + final contents = await file.readAsString(); + return jsonDecode(contents) as Map<String, dynamic>; + } catch (e) { + throw Exception('Failed to load JSON from $path: $e'); + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.Future<Map<String, dynamic>> loadJson(String path) async { try { final file = File(path); if (!await file.exists()) { throw FileSystemException('File not found', path); } final contents = await file.readAsString(); return jsonDecode(contents) as Map<String, dynamic>; } catch (e) { throw Exception('Failed to load JSON from $path: $e'); } }
35-35: 💡 Codebase verification
Missing test data file and directory structure
The test is trying to load a JSON file from
test/examples/new_sell_order.json, but:
- The
test/examplesdirectory does not exist- The required JSON file is missing
- The
loadJsonfunction is locally defined and uses direct file system accessThis will cause test failures. Either:
- Create the missing test data directory and file, or
- Bundle the test data within the test file itself as a constant
🔗 Analysis chain
Verify test file path across different environments
The hardcoded path
'test/examples/new_sell_order.json'might fail in different environments or CI/CD pipelines.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check if the test file exists and is accessible fd "new_sell_order.json"Length of output: 24
Script:
#!/bin/bash # Let's try searching with ripgrep to find any references to this JSON file rg "new_sell_order.json" # Also check the directory structure for test/examples fd "examples" -t d # And look for any JSON files in the project fd ".json$"Length of output: 363
Script:
#!/bin/bash # Let's check the loadJson function implementation to understand how it handles paths rg -A 5 "loadJson" test/models/order_test.dart # Also check if there are any other test files using similar pattern rg "loadJson\(" # Check the test/examples directory existence ls -la test/examples 2>/dev/null || echo "Directory does not exist"Length of output: 732
lib/presentation/widgets/currency_dropdown.dart (3)
13-17: 🛠️ Refactor suggestion
Add null safety handling for selectedFiatCode.
The selectedFiatCode value should be handled for null cases to prevent potential runtime errors.
Widget build(BuildContext context, WidgetRef ref) { final currencyCodesAsync = ref.watch(currencyCodesProvider); - final selectedFiatCode = ref.watch(selectedFiatCodeProvider); + final selectedFiatCode = ref.watch(selectedFiatCodeProvider) ?? '';📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.@override Widget build(BuildContext context, WidgetRef ref) { final currencyCodesAsync = ref.watch(currencyCodesProvider); final selectedFiatCode = ref.watch(selectedFiatCodeProvider) ?? '';
24-33: 🛠️ Refactor suggestion
Enhance error handling and loading states.
The current error handling is basic and doesn't provide user recovery options. Consider:
- Adding a retry button for error states
- Using a more user-friendly error message
- Making the loading indicator adaptive to the container size
loading: () => const Center( child: SizedBox( - height: 24, - width: 24, + height: double.infinity, child: CircularProgressIndicator(), ), ), - error: (error, stackTrace) => Text('Error: $error'), + error: (error, stackTrace) => Row( + children: [ + Text('Failed to load currencies'), + TextButton( + onPressed: () => ref.refresh(currencyCodesProvider), + child: const Text('Retry'), + ), + ], + ),📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.child: currencyCodesAsync.when( loading: () => const Center( child: SizedBox( height: double.infinity, child: CircularProgressIndicator(), ), ), error: (error, stackTrace) => Row( children: [ Text('Failed to load currencies'), TextButton( onPressed: () => ref.refresh(currencyCodesProvider), child: const Text('Retry'), ), ], ), data: (currencyCodes) {
44-57: 🛠️ Refactor suggestion
Integrate with form validation and use theme styles.
The dropdown should support form validation and use theme-consistent styles.
return DropdownButtonFormField<String>( decoration: InputDecoration( border: InputBorder.none, labelText: label, - labelStyle: const TextStyle(color: Colors.grey), + labelStyle: Theme.of(context).inputDecorationTheme.labelStyle, ), - dropdownColor: const Color(0xFF1D212C), + dropdownColor: Theme.of(context).colorScheme.surface, - style: const TextStyle(color: Colors.white), + style: Theme.of(context).textTheme.bodyMedium, items: items, value: selectedFiatCode, + validator: (value) { + if (value == null || value.isEmpty) { + return 'Please select a currency'; + } + return null; + }, onChanged: (value) => ref.read(selectedFiatCodeProvider.notifier).state = value, );📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.return DropdownButtonFormField<String>( decoration: InputDecoration( border: InputBorder.none, labelText: label, labelStyle: Theme.of(context).inputDecorationTheme.labelStyle, ), dropdownColor: Theme.of(context).colorScheme.surface, style: Theme.of(context).textTheme.bodyMedium, items: items, value: selectedFiatCode, validator: (value) { if (value == null || value.isEmpty) { return 'Please select a currency'; } return null; }, onChanged: (value) => ref.read(selectedFiatCodeProvider.notifier).state = value, ); },lib/data/models/enums/action.dart (1)
54-59: 🛠️ Refactor suggestion
Improve the fromString method implementation
The current implementation has a few minor issues:
- The error message incorrectly refers to "Kind" instead of "Action"
- The linear search using
firstWherecould be inefficient for large enumsConsider this improved implementation:
- static Action fromString(String value) { - return Action.values.firstWhere( - (k) => k.value == value, - orElse: () => throw ArgumentError('Invalid Kind: $value'), - ); - } + /// Converts a string value to its corresponding Action enum value. + /// + /// Throws an ArgumentError if the string doesn't match any Action value. + static final _valueMap = { + for (var action in Action.values) action.value: action + }; + + static Action fromString(String value) { + final action = _valueMap[value]; + if (action == null) { + throw ArgumentError('Invalid Action: $value'); + } + return action; + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// Converts a string value to its corresponding Action enum value. /// /// Throws an ArgumentError if the string doesn't match any Action value. static final _valueMap = { for (var action in Action.values) action.value: action }; static Action fromString(String value) { final action = _valueMap[value]; if (action == null) { throw ArgumentError('Invalid Action: $value'); } return action; }lib/data/repositories/secure_storage_manager.dart (4)
1-13:
⚠️ Potential issueSecurity Warning: SharedPreferences is not suitable for sensitive data storage
Using
SharedPreferencesfor storing session data including private keys is a significant security risk as it stores data in plain text. While this aligns with the alpha preview nature mentioned in the PR objectives, it's crucial to note that this implementation should never be used in production.Consider these security improvements for the production version:
- Replace SharedPreferences with
flutter_secure_storageor platform-specific secure storage solutions- Implement encryption for stored session data
- Consider using hardware security modules (HSM) when available
15-30: 🛠️ Refactor suggestion
Add error handling and validation
The session creation and storage methods need improvements in error handling and validation.
Consider these improvements:
Future<Session> newSession() async { + try { final keys = NostrUtils.generateKeyPair(); + if (keys.public.isEmpty || keys.private.isEmpty) { + throw Exception('Invalid key pair generated'); + } final session = Session( sessionId: keys.public, startTime: DateTime.now(), keyPair: keys, ); await saveSession(session); return session; + } catch (e) { + throw Exception('Failed to create new session: $e'); + } } Future<void> saveSession(Session session) async { + if (session.sessionId.isEmpty) { + throw ArgumentError('Invalid session ID'); + } final prefs = await SharedPreferences.getInstance(); String sessionJson = jsonEncode(session.toJson()); await prefs.setString(session.sessionId, sessionJson); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.Future<Session> newSession() async { try { final keys = NostrUtils.generateKeyPair(); if (keys.public.isEmpty || keys.private.isEmpty) { throw Exception('Invalid key pair generated'); } final session = Session( sessionId: keys.public, startTime: DateTime.now(), keyPair: keys, ); await saveSession(session); return session; } catch (e) { throw Exception('Failed to create new session: $e'); } } Future<void> saveSession(Session session) async { if (session.sessionId.isEmpty) { throw ArgumentError('Invalid session ID'); } final prefs = await SharedPreferences.getInstance(); String sessionJson = jsonEncode(session.toJson()); await prefs.setString(session.sessionId, sessionJson); }
46-67: 🛠️ Refactor suggestion
Optimize session cleanup mechanism
The cleanup implementation could be improved for better performance and maintainability.
Consider these improvements:
+ static const cleanupIntervalMinutes = 30; + static const maxBatchSize = 100; Future<void> clearExpiredSessions() async { + try { final prefs = await SharedPreferences.getInstance(); final now = DateTime.now(); final allKeys = prefs.getKeys(); + int processedCount = 0; for (var key in allKeys) { + if (processedCount >= maxBatchSize) { + // Schedule remaining cleanup for next run + break; + } final sessionJson = prefs.getString(key); if (sessionJson != null) { + try { final session = Session.fromJson(jsonDecode(sessionJson)); if (now.difference(session.startTime).inHours >= sessionExpirationHours) { await prefs.remove(key); + processedCount++; } + } catch (e) { + print('Error processing session $key: $e'); + await prefs.remove(key); + processedCount++; + } } } + } catch (e) { + print('Error during session cleanup: $e'); + } } void _initializeCleanup() { clearExpiredSessions(); - _cleanupTimer = Timer.periodic(Duration(minutes: 30), (timer) { + _cleanupTimer = Timer.periodic(Duration(minutes: cleanupIntervalMinutes), (timer) { clearExpiredSessions(); }); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.static const cleanupIntervalMinutes = 30; static const maxBatchSize = 100; Future<void> clearExpiredSessions() async { try { final prefs = await SharedPreferences.getInstance(); final now = DateTime.now(); final allKeys = prefs.getKeys(); int processedCount = 0; for (var key in allKeys) { if (processedCount >= maxBatchSize) { // Schedule remaining cleanup for next run break; } final sessionJson = prefs.getString(key); if (sessionJson != null) { try { final session = Session.fromJson(jsonDecode(sessionJson)); if (now.difference(session.startTime).inHours >= sessionExpirationHours) { await prefs.remove(key); processedCount++; } } catch (e) { print('Error processing session $key: $e'); await prefs.remove(key); processedCount++; } } } } catch (e) { print('Error during session cleanup: $e'); } } void _initializeCleanup() { clearExpiredSessions(); _cleanupTimer = Timer.periodic(Duration(minutes: cleanupIntervalMinutes), (timer) { clearExpiredSessions(); }); }
1-72: 💡 Codebase verification
Add security documentation and mark implementation as preview-only
The implementation requires immediate documentation updates for security considerations:
- The README indicates this is a "super early version" but the security implications of using SharedPreferences for sensitive data are not documented.
- The SecureStorageManager is being used in production code (mostro_service.dart) without any warning about its preview nature.
Action items needed:
- Add clear documentation that this storage implementation is for development/preview only
- Document the security implications of storing sensitive keys in SharedPreferences
- Add TODOs for replacing with proper secure storage before production release
- Consider adding a warning log when this storage is used in non-debug builds
🔗 Analysis chain
Verify alignment with alpha preview requirements
The implementation aligns with the PR objectives for an alpha preview, particularly the use of ephemeral keys. However, ensure that the following are clearly documented:
- This implementation is for development/preview only
- Security implications of using SharedPreferences
- The 48-hour session expiration design decision
Let's verify the usage of this class:
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for any production flags or configurations that might accidentally use this implementation rg -l "SecureStorageManager" | xargs rg -l "production|prod|release" # Search for any documentation about the preview nature of this implementation fd -e md -e txt | xargs rg -l "SecureStorageManager"Length of output: 154
Script:
#!/bin/bash # Let's check the content of mostro_service.dart to understand the usage context cat lib/services/mostro_service.dart # Let's also search for any test files or configuration files related to this implementation fd -e dart | grep -i "test\|spec\|config" | xargs rg -l "SecureStorageManager" # Search for any comments or documentation strings mentioning security or preview/alpha rg -g "*.dart" -C 3 "\/\/.*preview|\/\/.*alpha|\/\/.*security|\/\*.*security" lib/Length of output: 5894
Script:
#!/bin/bash # Let's fix the regex and search for security/preview related comments rg -g "*.dart" "(?://|/\*).*(?:preview|alpha|security)" lib/ # Check for any configuration or environment files fd "config|env" | xargs cat # Look for any documentation about security considerations fd "README|SECURITY|CONTRIBUTING" | xargs catLength of output: 5189
lib/presentation/widgets/exchange_rate_widget.dart (2)
23-65: 🛠️ Refactor suggestion
Add accessibility support and improve UI implementation
Several improvements could enhance the widget's usability and maintainability:
- Add accessibility support:
GestureDetector( + semanticsLabel: 'Refresh exchange rate', onTap: () {
- Use theme colors instead of hard-coded values:
- color: const Color(0xFF303544), + color: Theme.of(context).colorScheme.surface,
- Improve number formatting for large values:
- '1 BTC = ${exchangeRate.toStringAsFixed(2)} $currency', + '1 BTC = ${NumberFormat.currency( + symbol: '', + decimalDigits: 2, + ).format(exchangeRate)} $currency',
- Add visual feedback for refresh action:
onTap: () { + ScaffoldMessenger.of(context).showSnackBar( + const SnackBar( + content: Text('Refreshing exchange rate...'), + duration: Duration(seconds: 1), + ), + ); ref.read(exchangeRateProvider(currency).notifier)Committable suggestion skipped: line range outside the PR's diff.
16-16: 💡 Codebase verification
Security considerations for exchange rate provider
The implementation reveals several security concerns that need to be addressed:
- Using unencrypted HTTP calls to fetch exchange rates (no HTTPS enforcement)
- No API key authentication mechanism in place
- Basic error handling without rate limiting or retry mechanisms
- Direct exposure of raw API responses without data validation
Key locations requiring attention:
lib/services/exchange_service.dart: Add HTTPS enforcement and proper request validationlib/services/yadio_exchange_service.dart: Implement API key authentication and rate limiting- Both services: Add input validation and sanitization for currency parameters
🔗 Analysis chain
Verify exchange rate provider implementation
Given this is an alpha preview handling financial data, we should verify the exchange rate provider's implementation for security considerations.
Let me gather more information about the exchange rate provider implementation.
Let me check the exchange service implementation and notifier to understand the data handling better.
Let me check the implementation of the getRequest method and any error handling in the exchange service.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for the exchange rate provider implementation echo "Checking exchange rate provider implementation..." rg -l "exchangeRateProvider" --type dart # Look for any sensitive data handling echo "Checking for sensitive data handling..." ast-grep --pattern 'class $_ implements ExchangeRateProvider { $$$ }'Length of output: 465
Script:
#!/bin/bash # Check the implementation details of the exchange rate provider echo "Checking exchange service provider implementation..." rg -A 10 "exchangeRateProvider" lib/providers/exchange_service_provider.dart # Check for any network or API calls related to exchange rates echo "Checking for network/API calls..." rg -A 5 "(http|api|url|endpoint).*exchange" --type dart # Look for any security-related configurations echo "Checking security configurations..." rg -A 5 "(secure|ssl|https|certificate|auth|token)" lib/providers/exchange_service_provider.dartLength of output: 1011
Script:
#!/bin/bash # Check the ExchangeRateNotifier implementation echo "Checking ExchangeRateNotifier implementation..." ast-grep --pattern 'class ExchangeRateNotifier extends StateNotifier<$_> { $$$ }' # Check the exchange service interface and implementation echo "Checking exchange service..." rg -A 10 "class.*ExchangeService" --type dart # Check for any mock/test data usage echo "Checking for mock/test data..." rg -A 5 "mock.*exchange|test.*exchange" --type dartLength of output: 1836
Script:
#!/bin/bash # Check the getRequest implementation and error handling echo "Checking getRequest implementation..." rg -A 15 "getRequest.*async" lib/services/exchange_service.dart # Check for any error handling or validation echo "Checking error handling..." rg -A 10 "try|catch|throw|error" lib/services/exchange_service.dart lib/services/yadio_exchange_service.dart # Check if there's any rate limiting or API key usage echo "Checking API configuration..." rg -A 5 "(api.*key|rate.*limit)" lib/services/yadio_exchange_service.dartLength of output: 3010
lib/presentation/widgets/order_filter.dart (3)
54-57:
⚠️ Potential issueImplement proper dropdown values and loading states
The dropdown sections are initialized with empty values and no options.
- buildDropdownSection(context, 'Fiat currencies', ''), - buildDropdownSection(context, 'Payment methods', ''), - buildDropdownSection(context, 'Countries', ''), - buildDropdownSection(context, 'Rating', ''), + buildDropdownSection( + context, + 'Fiat currencies', + selectedFiatCurrency ?? 'Select currency', + onFiatCurrencyChanged, + ['USD', 'EUR', 'GBP'], // Add supported currencies + ), + buildDropdownSection( + context, + 'Payment methods', + selectedPaymentMethod ?? 'Select method', + onPaymentMethodChanged, + ['Bank Transfer', 'Cash'], // Add supported methods + ),Committable suggestion skipped: line range outside the PR's diff.
63-106: 🛠️ Refactor suggestion
Enhance dropdown section implementation
The current implementation lacks proper item handling and error states.
Widget buildDropdownSection( - BuildContext context, String title, String value) { + BuildContext context, + String title, + String value, + void Function(String?) onChanged, + List<String> items) { return Padding( padding: const EdgeInsets.symmetric(vertical: 8.0), child: Column( crossAxisAlignment: CrossAxisAlignment.start, children: [ - SizedBox(height: 4), Container( padding: EdgeInsets.symmetric(horizontal: 12), decoration: BoxDecoration( borderRadius: BorderRadius.circular(8), border: Border.all(color: AppTheme.grey), ), child: GroupBox( title: title, child: DropdownButtonHideUnderline( child: DropdownButton<String>( value: value, - onChanged: (String? newValue) {}, - items: <String>[value] + onChanged: onChanged, + items: items .map<DropdownMenuItem<String>>((String value) { return DropdownMenuItem<String>( value: value,Committable suggestion skipped: line range outside the PR's diff.
6-7: 🛠️ Refactor suggestion
Add required parameters for filter functionality
The widget should accept callbacks and initial values for the filter options to be functional.
class OrderFilter extends StatelessWidget { - const OrderFilter({super.key}); + const OrderFilter({ + super.key, + required this.onFiatCurrencyChanged, + required this.onPaymentMethodChanged, + required this.onCountryChanged, + required this.onRatingChanged, + this.selectedFiatCurrency, + this.selectedPaymentMethod, + this.selectedCountry, + this.selectedRating, + }); + + final void Function(String?) onFiatCurrencyChanged; + final void Function(String?) onPaymentMethodChanged; + final void Function(String?) onCountryChanged; + final void Function(String?) onRatingChanged; + final String? selectedFiatCurrency; + final String? selectedPaymentMethod; + final String? selectedCountry; + final String? selectedRating;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.class OrderFilter extends StatelessWidget { const OrderFilter({ super.key, required this.onFiatCurrencyChanged, required this.onPaymentMethodChanged, required this.onCountryChanged, required this.onRatingChanged, this.selectedFiatCurrency, this.selectedPaymentMethod, this.selectedCountry, this.selectedRating, }); final void Function(String?) onFiatCurrencyChanged; final void Function(String?) onPaymentMethodChanged; final void Function(String?) onCountryChanged; final void Function(String?) onRatingChanged; final String? selectedFiatCurrency; final String? selectedPaymentMethod; final String? selectedCountry; final String? selectedRating;lib/data/models/order.dart (4)
8-44: 🛠️ Refactor suggestion
Add field validation and documentation.
Several improvements are recommended:
- Add validation for premium percentage and fiatAmount
- Consider using a more secure token implementation
- Add documentation for all fields explaining their purpose
Consider adding validation in the constructor:
Order({ this.id, required this.kind, this.status = Status.pending, this.amount = 0, required this.fiatCode, this.minAmount, this.maxAmount, required this.fiatAmount, required this.paymentMethod, required this.premium, this.masterBuyerPubkey, this.masterSellerPubkey, this.buyerInvoice, this.createdAt, this.expiresAt, this.buyerToken, this.sellerToken, -}) { +}) { + if (premium < 0 || premium > 100) { + throw ArgumentError('Premium must be between 0 and 100'); + } + if (fiatAmount <= 0) { + throw ArgumentError('Fiat amount must be positive'); + } +}Also, consider adding documentation:
/// Represents a buy/sell order in the system. class Order implements Content { /// Unique identifier for the order final String? id; /// Type of order (buy/sell) final OrderType kind; // Add documentation for other fields...
78-98:
⚠️ Potential issueAdd proper error handling and type validation.
The current implementation lacks error handling and type validation, which could lead to runtime errors.
Consider this safer implementation:
factory Order.fromJson(Map<String, dynamic> json) { + // Validate required fields + void validateField(String field) { + if (!json.containsKey(field)) { + throw FormatException('Missing required field: $field'); + } + } + + // Validate required fields + ['kind', 'status', 'fiat_code', 'fiat_amount', 'payment_method', 'premium'] + .forEach(validateField); + + // Safe type casting + T? safeCast<T>(String key, T Function(dynamic) converter) { + final value = json[key]; + return value == null ? null : converter(value); + } + return Order( - id: json['id'] as String?, - kind: OrderType.fromString(json['kind'] as String), + id: safeCast<String>('id', (v) => v.toString()), + kind: OrderType.fromString(json['kind'].toString()), // ... update other fields similarly ); }Committable suggestion skipped: line range outside the PR's diff.
100-113:
⚠️ Potential issueRemove force unwrapping and add error handling.
The current implementation uses unsafe force unwrapping (!) and type casting, which could lead to runtime crashes.
Consider this safer implementation:
factory Order.fromEvent(NostrEvent event) { + if (event.orderType == null || event.status == null || event.currency == null) { + throw FormatException('Missing required fields in NostrEvent'); + } + return Order( id: event.orderId, - kind: OrderType.fromString(event.orderType!), - status: Status.fromString(event.status!), - amount: event.amount as int, - fiatCode: event.currency!, - fiatAmount: int.parse(event.fiatAmount!), + kind: OrderType.fromString(event.orderType), + status: Status.fromString(event.status), + amount: event.amount is int ? event.amount : int.parse(event.amount.toString()), + fiatCode: event.currency, + fiatAmount: event.fiatAmount != null ? int.parse(event.fiatAmount) : 0, paymentMethod: event.paymentMethods.join(','), - premium: event.premium as int, - createdAt: event.createdAt as int, + premium: event.premium is int ? event.premium : int.parse(event.premium.toString()), + createdAt: event.createdAt is int ? event.createdAt : int.parse(event.createdAt.toString()), expiresAt: event.expiration as int?, ); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.factory Order.fromEvent(NostrEvent event) { if (event.orderType == null || event.status == null || event.currency == null) { throw FormatException('Missing required fields in NostrEvent'); } return Order( id: event.orderId, kind: OrderType.fromString(event.orderType), status: Status.fromString(event.status), amount: event.amount is int ? event.amount : int.parse(event.amount.toString()), fiatCode: event.currency, fiatAmount: event.fiatAmount != null ? int.parse(event.fiatAmount) : 0, paymentMethod: event.paymentMethods.join(','), premium: event.premium is int ? event.premium : int.parse(event.premium.toString()), createdAt: event.createdAt is int ? event.createdAt : int.parse(event.createdAt.toString()), expiresAt: event.expiration as int?, ); }
7-117:
⚠️ Potential issueAdd alpha version warning in class documentation.
Since this is an alpha preview that uses ephemeral keys, it's important to add clear documentation about the security implications.
Add this warning to the class documentation:
+/// WARNING: Alpha Preview Version +/// This implementation uses ephemeral keys for order management and is NOT +/// intended for production use. Security features are limited and data +/// persistence is not guaranteed. +/// class Order implements Content {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements./// WARNING: Alpha Preview Version /// This implementation uses ephemeral keys for order management and is NOT /// intended for production use. Security features are limited and data /// persistence is not guaranteed. /// class Order implements Content { final String? id; final OrderType kind; final Status status; final int amount; final String fiatCode; final int? minAmount; final int? maxAmount; final int fiatAmount; final String paymentMethod; final int premium; final String? masterBuyerPubkey; final String? masterSellerPubkey; final String? buyerInvoice; final int? createdAt; final int? expiresAt; final int? buyerToken; final int? sellerToken; Order({ this.id, required this.kind, this.status = Status.pending, this.amount = 0, required this.fiatCode, this.minAmount, this.maxAmount, required this.fiatAmount, required this.paymentMethod, required this.premium, this.masterBuyerPubkey, this.masterSellerPubkey, this.buyerInvoice, this.createdAt, this.expiresAt, this.buyerToken, this.sellerToken, }); @override Map<String, dynamic> toJson() { final data = <String, dynamic>{ type: { 'kind': kind.value, 'status': status.value, 'amount': amount, 'fiat_code': fiatCode, 'fiat_amount': fiatAmount, 'payment_method': paymentMethod, 'premium': premium, } }; if (id != null) data[type]['id'] = id; if (minAmount != null) data[type]['min_amount'] = minAmount; if (maxAmount != null) data[type]['max_amount'] = maxAmount; if (masterBuyerPubkey != null) { data[type]['master_buyer_pubkey'] = masterBuyerPubkey; } if (masterSellerPubkey != null) { data[type]['master_seller_pubkey'] = masterSellerPubkey; } if (buyerInvoice != null) data[type]['buyer_invoice'] = buyerInvoice; if (createdAt != null) data[type]['created_at'] = createdAt; if (expiresAt != null) data[type]['expires_at'] = expiresAt; if (buyerToken != null) data[type]['buyer_token'] = buyerToken; if (sellerToken != null) data[type]['seller_token'] = sellerToken; return data; } factory Order.fromJson(Map<String, dynamic> json) { return Order( id: json['id'] as String?, kind: OrderType.fromString(json['kind'] as String), status: Status.fromString(json['status'] as String), amount: json['amount'] as int, fiatCode: json['fiat_code'] as String, minAmount: json['min_amount'] as int?, maxAmount: json['max_amount'] as int?, fiatAmount: json['fiat_amount'] as int, paymentMethod: json['payment_method'] as String, premium: json['premium'] as int, masterBuyerPubkey: json['master_buyer_pubkey'] as String?, masterSellerPubkey: json['master_seller_pubkey'] as String?, buyerInvoice: json['buyer_invoice'] as String?, createdAt: json['created_at'] as int?, expiresAt: json['expires_at'] as int?, buyerToken: json['buyer_token'] as int?, sellerToken: json['seller_token'] as int?, ); } factory Order.fromEvent(NostrEvent event) { return Order( id: event.orderId, kind: OrderType.fromString(event.orderType!), status: Status.fromString(event.status!), amount: event.amount as int, fiatCode: event.currency!, fiatAmount: int.parse(event.fiatAmount!), paymentMethod: event.paymentMethods.join(','), premium: event.premium as int, createdAt: event.createdAt as int, expiresAt: event.expiration as int?, ); } @override String get type => 'order'; }pubspec.yaml (1)
54-58:
⚠️ Potential issueSecurity & Stability Risk: Git Dependency on Master Branch
Using a Git dependency pointing to the master branch (
dart-nip44) is risky as it:
- May introduce breaking changes without warning
- Makes builds non-reproducible
- Could pose security risks if the repository is compromised
Consider:
- Pointing to a specific commit hash instead of master
- Creating a fork of the repository under your organization
- Publishing a vetted version to pub.dev
lib/presentation/chat_list/screens/chat_list_screen.dart (1)
29-30: 🛠️ Refactor suggestion
Restore the
constkeyword for better performance.The
Paddingwidget has constant values and is immutable. Theconstkeyword should be retained for compile-time optimizations.- Padding( - padding: const EdgeInsets.all(16.0), + const Padding( + padding: EdgeInsets.all(16.0),📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.const Padding( padding: EdgeInsets.all(16.0),lib/presentation/widgets/order_list_item.dart (1)
43-45: 🛠️ Refactor suggestion
Improve time display and handle expired orders
The current implementation directly displays the raw expiration value. Consider:
- Converting to a user-friendly format (e.g., "2 hours left")
- Handling expired orders appropriately
Example implementation:
String _formatTimeRemaining(String expiration) { final expirationTime = DateTime.tryParse(expiration); if (expirationTime == null) return 'Invalid time'; final now = DateTime.now(); if (expirationTime.isBefore(now)) return 'Expired'; final difference = expirationTime.difference(now); if (difference.inHours > 24) { return '${difference.inDays}d left'; } else if (difference.inMinutes > 60) { return '${difference.inHours}h left'; } return '${difference.inMinutes}m left'; }lib/core/utils/auth_utils.dart (3)
13-13: 🛠️ Refactor suggestion
⚠️ Potential issueEmpty implementation of
deleteCredentialsThe
deleteCredentialsmethod has an empty body, so it doesn't remove any credentials as expected.Apply this diff to make the lack of implementation explicit:
static Future<void> deleteCredentials() async { + throw UnimplementedError('deleteCredentials is not implemented yet'); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.static Future<void> deleteCredentials() async { throw UnimplementedError('deleteCredentials is not implemented yet'); }
18-18: 🛠️ Refactor suggestion
⚠️ Potential issue
isBiometricsEnabledmethod always returnstrueThe
isBiometricsEnabledmethod returnstruewithout checking any actual biometric settings, which might lead to inconsistent app behavior.Consider implementing the logic to accurately reflect the biometric status or throwing an exception:
static Future<bool> isBiometricsEnabled() async { - return true; + throw UnimplementedError('isBiometricsEnabled is not implemented yet'); }Committable suggestion skipped: line range outside the PR's diff.
10-10: 🛠️ Refactor suggestion
⚠️ Potential issue
verifyPinmethod always returnstrueThe
verifyPinmethod unconditionally returnstrue, bypassing PIN verification. This could pose security risks as it allows access without proper authentication.Consider implementing the actual PIN verification logic or throwing an exception to indicate it's not yet implemented:
static Future<bool> verifyPin(String inputPin) async { - return true; + throw UnimplementedError('verifyPin is not implemented yet'); }Committable suggestion skipped: line range outside the PR's diff.
lib/presentation/add_order/bloc/add_order_bloc.dart (1)
18-24:
⚠️ Potential issueAdd error handling in
_onSubmitOrderto manage exceptions.Currently, any exceptions thrown by
mostroService.publishOrder(event.order);are not handled, which could lead to unhandled exceptions and potential app crashes. Consider adding error handling to manage exceptions and update the state accordingly.Apply the following diff to implement error handling:
void _onSubmitOrder(SubmitOrder event, Emitter<AddOrderState> emit) async { emit(state.copyWith(status: AddOrderStatus.submitting)); - await mostroService.publishOrder(event.order); - emit(state.copyWith(status: AddOrderStatus.submitted)); + try { + await mostroService.publishOrder(event.order); + emit(state.copyWith(status: AddOrderStatus.submitted)); + } catch (error) { + emit(state.copyWith(status: AddOrderStatus.failure)); + // Optionally, handle the error, e.g., log it or provide feedback to the user + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.void _onSubmitOrder(SubmitOrder event, Emitter<AddOrderState> emit) async { emit(state.copyWith(status: AddOrderStatus.submitting)); try { await mostroService.publishOrder(event.order); emit(state.copyWith(status: AddOrderStatus.submitted)); } catch (error) { emit(state.copyWith(status: AddOrderStatus.failure)); // Optionally, handle the error, e.g., log it or provide feedback to the user }lib/data/models/nostr_event.dart (3)
29-30:
⚠️ Potential issueFix potential null dereference in
_getTagValuemethodIn the
_getTagValuemethod,tagsor the result offirstWheremight benull. Usingtag!forces a non-null value, which can lead to a runtime exception. Safely handle the null case to prevent crashes.Apply this diff to fix the issue:
- final tag = tags?.firstWhere((t) => t[0] == key, orElse: () => []); - return tag!.length > 1 ? tag[1] : null; + final tag = tags != null + ? tags!.firstWhere((t) => t[0] == key, orElse: () => null) + : null; + return (tag != null && tag.length > 1) ? tag[1] : null;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final tag = tags != null ? tags!.firstWhere((t) => t[0] == key, orElse: () => null) : null; return (tag != null && tag.length > 1) ? tag[1] : null;
26-26:
⚠️ Potential issueHandle potential null value in 'document' getter
The
_getTagValue('z')may returnnull, and using the non-null assertion operator!can cause a runtime exception if it isnull. Consider adding a null check to prevent exceptions.Apply this diff to fix the issue:
- Order? get document => Order.fromJson(jsonDecode(_getTagValue('z')!)); + Order? get document { + final jsonString = _getTagValue('z'); + if (jsonString != null) { + return Order.fromJson(jsonDecode(jsonString)); + } + return null; + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.Order? get document { final jsonString = _getTagValue('z'); if (jsonString != null) { return Order.fromJson(jsonDecode(jsonString)); } return null; }
33-39: 🛠️ Refactor suggestion
Improve error handling for invalid timestamps in
_timeAgomethodIf
int.tryParse(ts)fails,timestampdefaults to0, which may not represent a valid date and could lead to incorrect calculations. Consider validating the timestamp and handling invalid values appropriately.Apply this diff to enhance error handling:
- final timestamp = int.tryParse(ts) ?? 0; - final DateTime eventTime = - DateTime.fromMillisecondsSinceEpoch(timestamp * 1000) - .subtract(Duration(hours: 36)); - return timeago.format(eventTime, allowFromNow: true); + final timestamp = int.tryParse(ts); + if (timestamp != null && timestamp > 0) { + final DateTime eventTime = + DateTime.fromMillisecondsSinceEpoch(timestamp * 1000) + .subtract(Duration(hours: 36)); + return timeago.format(eventTime, allowFromNow: true); + } else { + return "invalid date"; + }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.String _timeAgo(String? ts) { if (ts == null) return "invalid date"; final timestamp = int.tryParse(ts); if (timestamp != null && timestamp > 0) { final DateTime eventTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000) .subtract(Duration(hours: 36)); return timeago.format(eventTime, allowFromNow: true); } else { return "invalid date"; }lib/presentation/home/screens/home_screen.dart (2)
150-173:
⚠️ Potential issueAddress potential type comparison issues in event filtering
In
_buildOrderList, the events are filtered using:.where((evt) => evt.orderType == state.orderType.value)Ensure that
evt.orderTypeandstate.orderTypeare of the same type. IforderTypeis an enum, directly comparing them without.valuemay be more appropriate.Apply this diff to correct the comparison:
- .where((evt) => evt.orderType == state.orderType.value) + .where((evt) => evt.orderType == state.orderType)This ensures a proper comparison between enum values.
20-23: 🛠️ Refactor suggestion
Update state access to utilize Riverpod providers
In the
buildmethod, the code usescontext.read<HomeBloc>().add(LoadOrders());to load orders. Since the widget is now aConsumerWidget, it's more appropriate to use Riverpod'srefto interact with providers.Apply this diff to update the state access:
- context.read<HomeBloc>().add(LoadOrders()); + ref.read(homeProvider.notifier).add(LoadOrders());Ensure that
homeProvideris defined as a Riverpod provider managing the state previously handled byHomeBloc.Committable suggestion skipped: line range outside the PR's diff.
lib/core/utils/nostr_utils.dart (4)
222-224: 🛠️ Refactor suggestion
Add error handling in
_encryptNIP44methodThe
_encryptNIP44method may throw exceptions during encryption (e.g., due to invalid keys). Add error handling to manage potential exceptions and provide meaningful feedback.Apply this diff to include error handling:
static Future<String> _encryptNIP44( String content, String privkey, String pubkey) async { + try { return await Nip44.encryptMessage(content, privkey, pubkey); + } catch (e) { + // Handle encryption error appropriately + throw Exception('Encryption failed: $e'); + } }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.static Future<String> _encryptNIP44( String content, String privkey, String pubkey) async { try { return await Nip44.encryptMessage(content, privkey, pubkey); } catch (e) { // Handle encryption error appropriately throw Exception('Encryption failed: $e'); } }
140-141:
⚠️ Potential issueFix incorrect
DateTimeconversion inrandomNowfunctionThe
randomNowfunction is incorrectly creating aDateTimeobject by dividingcreatedAt.millisecondsSinceEpochby 1000, which converts milliseconds to seconds, and then passing this value toDateTime(). This leads to invalid dates sinceDateTimeexpects year, month, day, etc. UseDateTime.fromMillisecondsSinceEpoch()with the correct timestamp.Apply this diff to correct the conversion:
-randomNow() => DateTime(createdAt.millisecondsSinceEpoch ~/ 1000); +randomNow() => DateTime.fromMillisecondsSinceEpoch(createdAt.millisecondsSinceEpoch);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.randomNow() => DateTime.fromMillisecondsSinceEpoch(createdAt.millisecondsSinceEpoch);
13-16:
⚠️ Potential issueInclude public key in
generateKeyPairmethodThe
generateKeyPairmethod currently generates only the private key. To have a complete key pair, consider deriving and returning the corresponding public key. This ensures both keys are readily available for cryptographic operations.Apply this diff to include the public key:
static NostrKeyPairs generateKeyPair() { var ec = getS256(); var priv = ec.generatePrivateKey(); + var pub = ec.publicKeyFromPrivateKey(priv); - return NostrKeyPairs(private: priv.toHex()); + return NostrKeyPairs(private: priv.toHex(), public: pub.toHex()); }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.var ec = getS256(); var priv = ec.generatePrivateKey(); var pub = ec.publicKeyFromPrivateKey(priv); return NostrKeyPairs(private: priv.toHex(), public: pub.toHex());
227-229: 🛠️ Refactor suggestion
Add error handling in
_decryptNIP44methodSimilarly,
_decryptNIP44should handle possible exceptions during decryption to ensure robustness.Apply this diff to include error handling:
static Future<String> _decryptNIP44( String encryptedContent, String privkey, String pubkey) async { + try { return await Nip44.decryptMessage(encryptedContent, privkey, pubkey); + } catch (e) { + // Handle decryption error appropriately + throw Exception('Decryption failed: $e'); + } }Committable suggestion skipped: line range outside the PR's diff.
lib/presentation/add_order/screens/add_order_screen.dart (3)
84-87:
⚠️ Potential issueReplace placeholder 'expiration_hours' with the actual expiration duration.
The message contains
'expiration_hours', which appears to be a placeholder. Update it to display the correct number of hours the order will be available.Apply this diff to fix the placeholder:
const Text( - 'Your offer has been published! Please wait until another user picks your order. It will be available for expiration_hours hours. You can cancel this order before another user picks it up by executing: cancel.', + 'Your offer has been published! Please wait until another user picks your order. It will be available for 24 hours. You can cancel this order before it is picked up by navigating to your orders page.', style: TextStyle(fontSize: 18, color: AppTheme.cream1), textAlign: TextAlign.center, ),Note: Replace
24with the actual expiration time if different.Committable suggestion skipped: line range outside the PR's diff.
276-279: 🛠️ Refactor suggestion
Implement state management for the 'Fixed' toggle switch.
The
Switchwidget currently has a hardcodedvalue: falseand an emptyonChangedcallback, making it non-functional. Implement state management to handle the toggle's value changes, either by using a state variable or a RiverpodStateProvider.Here's how you can manage the switch state using Riverpod:
+final fixedToggleProvider = StateProvider<bool>((ref) => false); Widget _buildFixedToggle(WidgetRef ref) { return Row( children: [ const Text('Fixed', style: TextStyle(color: AppTheme.cream1)), const SizedBox(width: 8), Switch( - value: false, - onChanged: (value) { - // Update the state in the bloc if necessary - }, + value: ref.watch(fixedToggleProvider), + onChanged: (value) { + ref.read(fixedToggleProvider.notifier).state = value; + }, ), ], ); }Ensure you update the calls to
_buildFixedToggleto pass theWidgetRef:- _buildFixedToggle(), + _buildFixedToggle(ref),Committable suggestion skipped: line range outside the PR's diff.
17-25:
⚠️ Potential issueAvoid mutable controllers in
ConsumerWidget; consider usingConsumerStatefulWidget.Declaring
TextEditingControllers andGlobalKey<FormState>as instance variables in aConsumerWidgetmay lead to unexpected behavior becauseConsumerWidgetis stateless and does not handle disposal of resources. To manage the lifecycle of controllers properly, convertAddOrderScreeninto aConsumerStatefulWidgetand dispose of the controllers in thedisposemethod.Apply this diff to convert to
ConsumerStatefulWidget:-class AddOrderScreen extends ConsumerWidget { +class AddOrderScreen extends ConsumerStatefulWidget { + const AddOrderScreen({super.key}); + + @override + ConsumerState<AddOrderScreen> createState() => _AddOrderScreenState(); +} + +class _AddOrderScreenState extends ConsumerState<AddOrderScreen> { final _formKey = GlobalKey<FormState>(); - AddOrderScreen({super.key}); final _fiatAmountController = TextEditingController(); final _satsAmountController = TextEditingController(); final _paymentMethodController = TextEditingController(); final _lightningInvoiceController = TextEditingController(); + @override + void dispose() { + _fiatAmountController.dispose(); + _satsAmountController.dispose(); + _paymentMethodController.dispose(); + _lightningInvoiceController.dispose(); + super.dispose(); + } + @override - Widget build(BuildContext context, WidgetRef ref) { + Widget build(BuildContext context) { // Existing build method code... }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.class AddOrderScreen extends ConsumerStatefulWidget { const AddOrderScreen({super.key}); @override ConsumerState<AddOrderScreen> createState() => _AddOrderScreenState(); } class _AddOrderScreenState extends ConsumerState<AddOrderScreen> { final _formKey = GlobalKey<FormState>(); final _fiatAmountController = TextEditingController(); final _satsAmountController = TextEditingController(); final _paymentMethodController = TextEditingController(); final _lightningInvoiceController = TextEditingController(); @override void dispose() { _fiatAmountController.dispose(); _satsAmountController.dispose(); _paymentMethodController.dispose(); _lightningInvoiceController.dispose(); super.dispose(); } @override Widget build(BuildContext context) { // Existing build method code... }lib/presentation/order/screens/order_details_screen.dart (2)
224-237:
⚠️ Potential issueCheck for empty
paymentMethodsbefore accessingAccessing
order.paymentMethods[0]without checking if the list is not empty could lead to an error if the list is empty. Add a check to ensure there is at least one payment method available.Apply this diff to add a safety check:
Flexible( child: Text( - order.paymentMethods[0], + order.paymentMethods.isNotEmpty + ? order.paymentMethods[0] + : 'No payment methods available', style: const TextStyle(color: Colors.grey), overflow: TextOverflow.visible, softWrap: true, ), ),📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.const HeroIcon(HeroIcons.creditCard, style: HeroIconStyle.outline, color: Colors.white, size: 16), const SizedBox(width: 8), Flexible( child: Text( order.paymentMethods.isNotEmpty ? order.paymentMethods[0] : 'No payment methods available', style: const TextStyle(color: Colors.grey), overflow: TextOverflow.visible, softWrap: true, ), ), ],
19-19:
⚠️ Potential issueAvoid initializing
TextEditingControllerinConsumerWidgetInitializing
_satsAmountControllerin aConsumerWidget(which is aStatelessWidget) can lead to memory leaks since there's nodisposemethod to clean up the controller. Consider convertingOrderDetailsScreento aConsumerStatefulWidgetto manage the lifecycle of the controller properly.Apply this diff to convert the widget:
-import 'package:flutter_riverpod/flutter_riverpod.dart'; +import 'package:flutter_riverpod/flutter_riverpod.dart'; -class OrderDetailsScreen extends ConsumerWidget { +class OrderDetailsScreen extends ConsumerStatefulWidget { final NostrEvent initialOrder; - final _satsAmountController = TextEditingController(); OrderDetailsScreen({super.key, required this.initialOrder}); @override - Widget build(BuildContext context, WidgetRef ref) { + ConsumerState<OrderDetailsScreen> createState() => _OrderDetailsScreenState(); +} + +class _OrderDetailsScreenState extends ConsumerState<OrderDetailsScreen> { + late final TextEditingController _satsAmountController; + + @override + void initState() { + super.initState(); + _satsAmountController = TextEditingController(); + } + + @override + void dispose() { + _satsAmountController.dispose(); + super.dispose(); + } + + @override + Widget build(BuildContext context) {📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.import 'package:flutter_riverpod/flutter_riverpod.dart'; class OrderDetailsScreen extends ConsumerStatefulWidget { final NostrEvent initialOrder; OrderDetailsScreen({super.key, required this.initialOrder}); @override ConsumerState<OrderDetailsScreen> createState() => _OrderDetailsScreenState(); } class _OrderDetailsScreenState extends ConsumerState<OrderDetailsScreen> { late final TextEditingController _satsAmountController; @override void initState() { super.initState(); _satsAmountController = TextEditingController(); } @override void dispose() { _satsAmountController.dispose(); super.dispose(); } @override Widget build(BuildContext context) {lib/services/mostro_service.dart (4)
48-59:
⚠️ Potential issueManage stream subscriptions to prevent memory leaks
In the methods
publishOrder,takeSellOrder, andtakeBuyOrder, you're setting up stream subscriptions usingsubscribeToOrders(filter).listen(...)without storing or managing theStreamSubscriptionobjects. This can lead to memory leaks if the subscriptions are not canceled when they are no longer needed. Consider storing the subscriptions and providing a mechanism to cancel them appropriately.Also applies to: 81-88, 108-115
123-126:
⚠️ Potential issueImplement proper error handling when
sessionisnullIn the methods
cancelOrder,sendFiatSent, andreleaseOrder, ifsessionisnull, the code currently contains a TODO comment and simply returns. This can cause silent failures and makes debugging difficult. Replace the TODO comments with actual error handling to provide feedback when a session cannot be loaded.Apply this diff to throw an exception when
sessionisnull:if (session == null) { - // TODO: throw error - return; + throw Exception('Session not found for order ID: $orderId'); }Also applies to: 144-147, 165-168
81-88: 🛠️ Refactor suggestion
Refactor duplicated code in event listeners
The code within the event listeners in
takeSellOrderandtakeBuyOrdermethods is nearly identical. Duplicated code can make maintenance harder and increase the risk of inconsistencies. Refactor this code into a private helper method to improve maintainability.Here's how you might refactor the duplicated code:
+ void _subscribeToOrderResponses(Session session) { + final filter = NostrFilter(p: [session.publicKey]); + subscribeToOrders(filter).listen((event) async { + final response = await _nostrService.decryptNIP59Event(event, session.privateKey); + final orderResponse = MostroMessage.deserialized(response.content!); + print(response); + }); + } // In `takeSellOrder` method - final filter = NostrFilter(p: [session.publicKey]); - subscribeToOrders(filter).listen((event) async { - final response = - await _nostrService.decryptNIP59Event(event, session.privateKey); - final orderResponse = MostroMessage.deserialized(response.content!); - print(response); - }); + _subscribeToOrderResponses(session); // Similarly in `takeBuyOrder` methodAlso applies to: 108-115
119-121:
⚠️ Potential issueNull-check
orderbefore accessing its propertiesIn the
cancelOrdermethod, theorderretrieved from_mostroRepository.getOrder(orderId)might benull. Accessingorder!.requestId!without a null check can lead to a runtime exception. Add a null check fororderbefore accessing its properties to ensure robustness.Apply this diff to handle a null
order:final order = _mostroRepository.getOrder(orderId); + if (order == null) { + throw Exception('Order not found for order ID: $orderId'); + } final session = await _secureStorageManager.loadSession(order.requestId!);📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.final order = _mostroRepository.getOrder(orderId); if (order == null) { throw Exception('Order not found for order ID: $orderId'); } final session = await _secureStorageManager.loadSession(order.requestId!);
There was a problem hiding this comment.
Actionable comments posted: 9
🧹 Outside diff range and nitpick comments (7)
lib/services/mostro_service.dart (3)
15-15: Consider making version configurableThe
mostroVersionis hardcoded as a constant. Consider moving this to a configuration file to make version management more maintainable across the application.-const int mostroVersion = 1; +/// Version number from configuration +final int mostroVersion = Config.mostroVersion;
22-23: Consider implementing cache eviction strategyThe
_ordersand_sessionsHashMaps could potentially grow unbounded. Consider implementing a cache eviction strategy or periodic cleanup mechanism to prevent memory leaks.
19-23: Implement secure session management for productionCurrent session management using HashMaps and ephemeral keys is suitable for alpha preview but requires enhancement for production:
- Sessions are stored in memory without encryption
- No session expiration mechanism
- No secure cleanup of sensitive data
Consider implementing:
- Encrypted session storage
- Session timeout mechanism
- Secure memory wiping for sensitive data
- Session recovery mechanism for incomplete transactions
lib/core/utils/nostr_utils.dart (2)
13-13: Add validation and documentation for key generation methods.While the implementation is cryptographically sound using the elliptic package, consider these improvements:
- Add validation using
isValidPrivateKeybefore returning the generated key- Add documentation explaining the key format and security considerations
static NostrKeyPairs generateKeyPair() { - return NostrKeyPairs(private: generatePrivateKey()); + // Generate and validate private key + final privateKey = generatePrivateKey(); + if (!isValidPrivateKey(privateKey)) { + throw Exception('Generated invalid private key'); + } + return NostrKeyPairs(private: privateKey); } + /// Generates a 32-byte private key in hexadecimal format using + /// cryptographically secure random number generation. + /// Throws if key generation fails. static String generatePrivateKey() { return getS256().generatePrivateKey().toHex(); }Also applies to: 22-22
Line range hint
1-219: Add security warnings about alpha status.Given this is an alpha preview using ephemeral keys, consider adding clear warnings:
+ /// SECURITY WARNING: This is an alpha preview implementation. + /// - Uses ephemeral keys for order management + /// - Not audited for production use + /// - May contain security vulnerabilities + /// Use only for testing and development purposes. class NostrUtils {lib/presentation/add_order/bloc/add_order_bloc.dart (2)
8-10: Consider using dependency injection for 'MostroService'.While passing
MostroServicethrough the constructor works, leveraging a dependency injection framework likeProviderorGetItcould enhance scalability and testability, especially as the application grows.
28-43: Replace 'print' statements with a logging framework.Using
loggerto provide better log management.Apply this diff to implement logging:
+ import 'package:logger/logger.dart'; + final Logger _logger = Logger(); void _onOrderUpdateReceived( OrderUpdateReceived event, Emitter<AddOrderState> emit) { switch (event.order.action) { case Action.newOrder: - print(event.order.content!.toJson()); + _logger.i(event.order.content!.toJson()); emit(state.copyWith(status: AddOrderStatus.submitted)); break; case Action.outOfRangeSatsAmount: case Action.outOfRangeFiatAmount: - print("Error! ${event.order.action.value}"); + _logger.e("Error! ${event.order.action.value}"); emit(state.copyWith( status: AddOrderStatus.failure, errorMessage: "Invalid amount")); break; default: break; } }
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📒 Files selected for processing (4)
lib/core/utils/nostr_utils.dart(3 hunks)lib/presentation/add_order/bloc/add_order_bloc.dart(1 hunks)lib/presentation/add_order/bloc/add_order_event.dart(3 hunks)lib/services/mostro_service.dart(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- lib/presentation/add_order/bloc/add_order_event.dart
🔇 Additional comments (2)
lib/services/mostro_service.dart (1)
1-174: Verify relay connection configuration
According to the PR objectives, the application should connect to a relay on port 7000 using either localhost (127.0.0.1) or emulator address (10.0.2.2).
✅ Verification successful
Let me check the actual configuration in the config file to verify the relay settings.
Relay configuration is properly implemented
The Config class correctly implements the relay configuration as specified:
- Local development relay at
ws://127.0.0.1:7000 - Android emulator relay at
ws://10.0.2.2:7000 - Production relays are commented out as expected for alpha preview
- Includes proper timeout configuration of 30 seconds
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify relay configuration in the codebase
# Check for relay configuration
rg -l "7000|127\.0\.0\.1|10\.0\.2\.2" --type dart
# Check Config class implementation
ast-grep --pattern 'class Config {
$$$
static $_ mostroPubKey = $_;
$$$
}'
Length of output: 155
Script:
#!/bin/bash
# Check the content of config.dart to verify relay settings
cat lib/core/config.dart
Length of output: 778
lib/presentation/add_order/bloc/add_order_bloc.dart (1)
24-25: Verify the necessity of manually adding 'OrderUpdateReceived' event.
After publishing the order, an OrderUpdateReceived event is immediately added. Ensure that this does not conflict with any asynchronous updates from the MostroService, potentially causing duplicate events or state inconsistencies.
Run the following script to check for asynchronous emissions related to order updates:
✅ Verification successful
Based on the analysis of the MostroService implementation, I can now provide a conclusive response:
Manual addition of OrderUpdateReceived event is necessary and correct
The publishOrder method in MostroService returns a single MostroMessage through a one-time subscription (using .first). It does not set up any persistent stream for order updates. The method creates a temporary subscription to receive the server's acknowledgment of the published order and then automatically unsubscribes.
This design means:
- The service itself doesn't emit continuous order updates
- The returned order contains the server-validated state
- Manually dispatching
OrderUpdateReceivedis the correct way to update the bloc's state with this validated order
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify if 'MostroService.publishOrder' emits 'OrderUpdateReceived' events.
# Search for emissions of 'OrderUpdateReceived' within 'publishOrder' and related methods.
rg -A 5 "emit\(OrderUpdateReceived" lib/services/mostro_service.dart
Length of output: 70
Script:
#!/bin/bash
# Let's first check the implementation of publishOrder method in MostroService
ast-grep --pattern 'publishOrder($_) {
$$$
}'
# Also check for any stream or subscription related to order updates
rg -A 5 "Stream.*Order|orderStream|orderSubscription"
# Check the implementation of MostroService class
ast-grep --pattern 'class MostroService {
$$$
}'
Length of output: 11427
Script:
#!/bin/bash
# Let's check how HomeBloc handles order updates
ast-grep --pattern 'class HomeBloc {
$$$
}'
# Also check for any OrderUpdateReceived event handling in AddOrderBloc
ast-grep --pattern 'class AddOrderBloc {
$$$
}'
# Check for any stream subscriptions in AddOrderBloc
rg -A 5 "StreamSubscription.*Order" lib/presentation/add_order/bloc/add_order_bloc.dart
Length of output: 189
lib/services/mostro_service.dart
Outdated
| Future<void> takeSellOrder(String orderId, {int? amount}) async { | ||
| final session = await _secureStorageManager.newSession(); | ||
| session.eventId = orderId; | ||
|
|
||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'version': mostroVersion, | ||
| 'id': orderId, | ||
| 'action': 'cancel', | ||
| 'content': null, | ||
| 'action': Action.takeSell.value, | ||
| 'content': amount != null ? {'amount': amount} : null, | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
|
|
||
| await _nostrService.publishEvent(event); | ||
|
|
||
| final filter = NostrFilter(p: [session.publicKey]); | ||
|
|
||
| subscribeToOrders(filter).listen((event) async { | ||
| final response = | ||
| await _nostrService.decryptNIP59Event(event, session.privateKey); | ||
|
|
||
| final orderResponse = MostroMessage.deserialized(response.content!); | ||
|
|
||
| print(response); | ||
| }); | ||
| } | ||
|
|
||
| Future<void> takeSellOrder(String orderId, {int? amount}) async { | ||
| Future<MostroMessage<Content>> takeBuyOrder(String orderId, {int? amount}) async { | ||
| final session = await _secureStorageManager.newSession(); | ||
| session.eventId = orderId; | ||
|
|
||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'version': mostroVersion, | ||
| 'id': orderId, | ||
| 'action': 'take-sell', | ||
| 'action': Action.takeBuy.value, | ||
| 'content': amount != null ? {'amount': amount} : null, | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
| await _nostrService.publishEvent(event); | ||
| final filter = NostrFilter(p: [session.publicKey]); | ||
|
|
||
| return await subscribeToOrders(filter).asyncMap((event) async { | ||
| return await _nostrService.decryptNIP59Event(event, session.privateKey); | ||
| }).map((event) { | ||
| return MostroMessage.deserialized(event.content!); | ||
| }).first; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Harmonize takeBuyOrder and takeSellOrder implementations
The buy and sell order methods have inconsistent implementations:
takeBuyOrderreturns aFuture<MostroMessage>whiletakeSellOrderreturnsFuture<void>takeSellOrderuseslistenwhiletakeBuyOrderusesfirst- Error handling is missing in both methods
Consider extracting common logic into a shared private method:
Future<MostroMessage<Content>> _takeOrder(
String orderId,
Action action,
{int? amount}
) async {
final session = await _secureStorageManager.newSession();
session.eventId = orderId;
final content = jsonEncode({
'order': {
'version': mostroVersion,
'id': orderId,
'action': action.value,
'content': amount != null ? {'amount': amount} : null,
},
});
try {
final event = await _nostrService.createNIP59Event(
content,
Config.mostroPubKey,
session.privateKey
);
await _nostrService.publishEvent(event);
final filter = NostrFilter(p: [session.publicKey]);
return await subscribeToOrders(filter)
.timeout(
const Duration(seconds: 30),
onTimeout: () => throw TimeoutException('Order taking timeout'),
)
.asyncMap((event) async {
return await _nostrService.decryptNIP59Event(
event,
session.privateKey
);
})
.map((event) => MostroMessage.deserialized(event.content!))
.first;
} catch (e) {
throw OrderTakingException('Failed to take order: $e');
}
}
lib/services/mostro_service.dart
Outdated
| Future<void> cancelOrder(String orderId) async { | ||
| final order = _mostroRepository.getOrder(orderId); | ||
|
|
||
| final session = await _secureStorageManager.loadSession(order!.requestId!); | ||
|
|
||
| if (session == null) { | ||
| // TODO: throw error | ||
| return; | ||
| } | ||
|
|
||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'version': mostroVersion, | ||
| 'id': orderId, | ||
| 'action': 'take-buy', | ||
| 'content': amount != null ? {'amount': amount} : null, | ||
| 'action': Action.cancel, | ||
| 'content': null, | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
| await _nostrService.publishEvent(event); | ||
| } | ||
|
|
||
| Stream<OrderModel> subscribeToOrders() { | ||
| DateTime filterTime = DateTime.now().subtract(Duration(hours: 24)); | ||
|
|
||
| var filter = NostrFilter( | ||
| kinds: const [38383], | ||
| since: filterTime, | ||
| ); | ||
| return _nostrService.subscribeToEvents(filter).map((event) { | ||
| // Convertir el evento Nostr a OrderModel | ||
| // Implementar la lógica de conversión aquí | ||
| return OrderModel.fromEventTags(event.tags!); | ||
| }); | ||
| } | ||
|
|
||
| Future<void> sendFiatSent(String orderId) async { | ||
| final session = await _secureStorageManager.loadSession(orderId); | ||
|
|
||
| if (session == null) { | ||
| // TODO: throw error | ||
| return; | ||
| } | ||
|
|
||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'version': mostroVersion, | ||
| 'id': orderId, | ||
| 'action': 'fiat-sent', | ||
| 'action': Action.fiatSent.value, | ||
| 'content': null, | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
| await _nostrService.publishEvent(event); | ||
| } | ||
|
|
||
| Future<void> releaseOrder(String orderId) async { | ||
| final session = await _secureStorageManager.loadSession(orderId); | ||
|
|
||
| if (session == null) { | ||
| // TODO: throw error | ||
| return; | ||
| } | ||
|
|
||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'version': mostroVersion, | ||
| 'id': orderId, | ||
| 'action': 'release', | ||
| 'action': Action.release.value, | ||
| 'content': null, | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
| await _nostrService.publishEvent(event); | ||
| } |
There was a problem hiding this comment.
Address TODOs and implement proper error handling
Multiple methods contain TODO comments for error handling and have similar patterns that could be consolidated.
Consider implementing proper error handling and extracting common logic:
class OrderManagementException implements Exception {
final String message;
OrderManagementException(this.message);
}
Future<void> _executeOrderAction(
String orderId,
Action action,
{Map<String, dynamic>? content}
) async {
final order = _mostroRepository.getOrder(orderId);
if (order == null) {
throw OrderManagementException('Order not found: $orderId');
}
final session = await _secureStorageManager.loadSession(order.requestId!);
if (session == null) {
throw OrderManagementException('Session not found for order: $orderId');
}
final eventContent = jsonEncode({
'order': {
'version': mostroVersion,
'id': orderId,
'action': action.value,
'content': content,
},
});
try {
final event = await _nostrService.createNIP59Event(
eventContent,
Config.mostroPubKey,
session.privateKey
);
await _nostrService.publishEvent(event);
} catch (e) {
throw OrderManagementException('Failed to execute action: $e');
}
}
lib/services/mostro_service.dart
Outdated
| Future<MostroMessage> publishOrder( | ||
| Order order) async { | ||
| final session = await _secureStorageManager.newSession(); | ||
|
|
||
| Future<void> publishOrder(OrderModel order) async { | ||
| final content = jsonEncode({ | ||
| 'order': { | ||
| 'version': 1, | ||
| 'action': 'new-order', | ||
| 'content': { | ||
| 'order': order.toJson(), | ||
| }, | ||
| 'version': mostroVersion, | ||
| 'action': Action.newOrder.value, | ||
| 'content': order.toJson(), | ||
| }, | ||
| }); | ||
| final event = await _nostrService.createNIP59Event(content, Config.mostroPubKey); | ||
|
|
||
| final event = await _nostrService.createNIP59Event( | ||
| content, Config.mostroPubKey, session.privateKey); | ||
|
|
||
| await _nostrService.publishEvent(event); | ||
|
|
||
| final filter = NostrFilter(p: [session.publicKey]); | ||
|
|
||
| return await subscribeToOrders(filter).asyncMap((event) async { | ||
| return await _nostrService.decryptNIP59Event(event, session.privateKey); | ||
| }).map((event) { | ||
| return MostroMessage.deserialized(event.content!); | ||
| }).first; |
There was a problem hiding this comment.
Add error handling and timeout for order publication
The publishOrder method lacks error handling for failed event publications and doesn't implement a timeout for the response subscription. This could lead to hanging operations if the relay doesn't respond.
Consider implementing this structure:
Future<MostroMessage> publishOrder(Order order) async {
+ try {
final session = await _secureStorageManager.newSession();
// ... existing code ...
- return await subscribeToOrders(filter).asyncMap((event) async {
+ return await subscribeToOrders(filter)
+ .timeout(
+ const Duration(seconds: 30),
+ onTimeout: () => throw TimeoutException('Order publication timeout'),
+ )
+ .asyncMap((event) async {
return await _nostrService.decryptNIP59Event(event, session.privateKey);
}).map((event) {
return MostroMessage.deserialized(event.content!);
}).first;
+ } catch (e) {
+ throw OrderPublicationException('Failed to publish order: $e');
+ }
}Committable suggestion skipped: line range outside the PR's diff.
lib/services/mostro_service.dart
Outdated
|
|
||
| final orderResponse = MostroMessage.deserialized(response.content!); | ||
|
|
||
| print(response); |
There was a problem hiding this comment.
Remove debug print statement
Debug print statements should not be present in production code. Consider using proper logging mechanism instead.
- print(response);
+ _logger.debug('Order response received: ${response.toString()}');Committable suggestion skipped: line range outside the PR's diff.
lib/core/utils/nostr_utils.dart
Outdated
| static DateTime randomNow() { | ||
| final now = DateTime.now(); | ||
| final randomSeconds = | ||
| Random().nextInt(2 * 24 * 60 * 60); | ||
| return now.subtract(Duration(seconds: randomSeconds)); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Document and validate timestamp randomization.
The randomization of timestamps by up to 48 hours:
- Could create timestamps in the future if system clock is ahead
- Purpose of randomization isn't clear (privacy? anti-correlation?)
- Large time range could affect event ordering
+ /// Generates a timestamp between now and 48 hours ago to enhance privacy
+ /// by decorrelating event timing from creation time.
+ /// @throws if system clock is ahead of network time
static DateTime randomNow() {
final now = DateTime.now();
+ // Validate system time isn't ahead
+ final networkTime = DateTime.now().toUtc();
+ if (now.isAfter(networkTime.add(Duration(minutes: 5)))) {
+ throw Exception('System clock is ahead of network time');
+ }
final randomSeconds = Random().nextInt(2 * 24 * 60 * 60);
return now.subtract(Duration(seconds: randomSeconds));
}Committable suggestion skipped: line range outside the PR's diff.
lib/core/utils/nostr_utils.dart
Outdated
| static Future<NostrEvent> decryptNIP59Event( | ||
| NostrEvent event, String privateKey) async { | ||
| final decryptedContent = | ||
| await _decryptNIP44(event.content ?? '', privateKey, event.pubkey); | ||
|
|
||
| final rumorEvent = NostrEvent.deserialized(decryptedContent); | ||
| final rumorSharedSecret = | ||
| _calculateSharedSecret(privateKey, rumorEvent.pubkey); | ||
| final finalDecryptedContent = | ||
| _decryptNIP44(rumorEvent.content ?? '', rumorSharedSecret); | ||
| final rumorEvent = | ||
| NostrEvent.deserialized('["EVENT", "", $decryptedContent]'); | ||
|
|
||
| return finalDecryptedContent; | ||
| } | ||
| final finalDecryptedContent = await _decryptNIP44( | ||
| rumorEvent.content ?? '', privateKey, rumorEvent.pubkey); | ||
|
|
||
| final wrap = jsonDecode(finalDecryptedContent) as Map<String, dynamic>; | ||
|
|
||
| static Uint8List _calculateSharedSecret(String privateKey, String publicKey) { | ||
| // Nota: Esta implementación puede necesitar ajustes dependiendo de cómo | ||
| // dart_nostr maneje la generación de secretos compartidos. | ||
| // Posiblemente necesites usar una biblioteca de criptografía adicional aquí. | ||
| final sharedPoint = generateKeyPairFromPrivateKey(privateKey).public; | ||
| return Uint8List.fromList(sha256.convert(utf8.encode(sharedPoint)).bytes); | ||
| return NostrEvent( | ||
| id: wrap['id'] as String, | ||
| kind: wrap['kind'] as int, | ||
| content: wrap['content'] as String, | ||
| sig: "", | ||
| pubkey: wrap['pubkey'] as String, | ||
| createdAt: DateTime.fromMillisecondsSinceEpoch( | ||
| (wrap['created_at'] as int) * 1000, | ||
| ), | ||
| tags: List<List<String>>.from( | ||
| (wrap['tags'] as List) | ||
| .map( | ||
| (nestedElem) => (nestedElem as List) | ||
| .map( | ||
| (nestedElemContent) => nestedElemContent.toString(), | ||
| ) | ||
| .toList(), | ||
| ) | ||
| .toList(), | ||
| ), | ||
| subscriptionId: '', | ||
| ); |
There was a problem hiding this comment.
Improve error handling and validation in NIP-59 event decryption.
The decryption process lacks proper error handling and validation of decrypted data structure.
static Future<NostrEvent> decryptNIP59Event(
NostrEvent event, String privateKey) async {
+ // Validate inputs
+ if (event.content == null || event.content!.isEmpty) {
+ throw ArgumentError('Event content is empty');
+ }
+ if (!isValidPrivateKey(privateKey)) {
+ throw ArgumentError('Invalid private key');
+ }
+ try {
final decryptedContent =
await _decryptNIP44(event.content ?? '', privateKey, event.pubkey);
final rumorEvent =
NostrEvent.deserialized('["EVENT", "", $decryptedContent]');
final finalDecryptedContent = await _decryptNIP44(
rumorEvent.content ?? '', privateKey, rumorEvent.pubkey);
final wrap = jsonDecode(finalDecryptedContent) as Map<String, dynamic>;
+ // Validate decrypted event structure
+ _validateEventStructure(wrap);
return NostrEvent(/* ... */);
+ } catch (e) {
+ throw Exception('Failed to decrypt NIP-59 event: $e');
+ }
}
+ /// Validates the structure of a decrypted event
+ static void _validateEventStructure(Map<String, dynamic> event) {
+ final requiredFields = ['id', 'kind', 'content', 'pubkey', 'created_at', 'tags'];
+ for (final field in requiredFields) {
+ if (!event.containsKey(field)) {
+ throw FormatException('Missing required field: $field');
+ }
+ }
+ }Committable suggestion skipped: line range outside the PR's diff.
lib/core/utils/nostr_utils.dart
Outdated
| static Future<NostrEvent> createNIP59Event( | ||
| String content, String recipientPubKey, String senderPrivateKey) async { | ||
| final senderKeyPair = generateKeyPairFromPrivateKey(senderPrivateKey); | ||
| final sharedSecret = | ||
| _calculateSharedSecret(senderPrivateKey, recipientPubKey); | ||
|
|
||
| final encryptedContent = _encryptNIP44(content, sharedSecret); | ||
|
|
||
| final createdAt = DateTime.now(); | ||
| final rumorEvent = NostrEvent( | ||
| kind: 1059, | ||
| pubkey: senderKeyPair.public, | ||
| content: encryptedContent, | ||
| final rumorEvent = NostrEvent.fromPartialData( | ||
| kind: 1, | ||
| keyPairs: senderKeyPair, | ||
| content: content, | ||
| createdAt: createdAt, | ||
| tags: [ | ||
| ["p", recipientPubKey] | ||
| ], | ||
| createdAt: createdAt, | ||
| id: '', // Se generará después | ||
| sig: '', // Se generará después | ||
| ); | ||
|
|
||
| // Generar ID y firma | ||
| final id = generateId({ | ||
| 'pubkey': rumorEvent.pubkey, | ||
| 'created_at': rumorEvent.createdAt!.millisecondsSinceEpoch ~/ 1000, | ||
| 'kind': rumorEvent.kind, | ||
| 'tags': rumorEvent.tags, | ||
| 'content': rumorEvent.content, | ||
| }); | ||
| signMessage(id, senderPrivateKey); | ||
| final encryptedContent = await _encryptNIP44( | ||
| jsonEncode(rumorEvent.toMap()), senderPrivateKey, '02$recipientPubKey'); | ||
|
|
||
| final sealEvent = NostrEvent.fromPartialData( | ||
| kind: 13, | ||
| keyPairs: senderKeyPair, | ||
| content: encryptedContent, | ||
| createdAt: randomNow(), | ||
| ); | ||
|
|
||
| final wrapperKeyPair = generateKeyPair(); | ||
| final wrappedContent = _encryptNIP44(jsonEncode(rumorEvent.toMap()), | ||
| _calculateSharedSecret(wrapperKeyPair.private, recipientPubKey)); | ||
|
|
||
| return NostrEvent( | ||
| final pk = wrapperKeyPair.private; | ||
|
|
||
| final sealedContent = | ||
| _encryptNIP44(jsonEncode(sealEvent.toMap()), pk, '02$recipientPubKey'); | ||
|
|
||
| final wrapEvent = NostrEvent.fromPartialData( | ||
| kind: 1059, | ||
| pubkey: wrapperKeyPair.public, | ||
| content: wrappedContent, | ||
| content: await sealedContent, | ||
| keyPairs: wrapperKeyPair, | ||
| tags: [ | ||
| ["p", recipientPubKey] | ||
| ], | ||
| createdAt: DateTime.now(), | ||
| id: generateId({ | ||
| 'pubkey': wrapperKeyPair.public, | ||
| 'created_at': DateTime.now().millisecondsSinceEpoch ~/ 1000, | ||
| 'kind': 1059, | ||
| 'tags': [ | ||
| ["p", recipientPubKey] | ||
| ], | ||
| 'content': wrappedContent, | ||
| }), | ||
| sig: '', // Se generará automáticamente al publicar el evento | ||
| createdAt: createdAt, | ||
| ); | ||
|
|
||
| return wrapEvent; |
There was a problem hiding this comment.
Add input validation and security hardening for NIP-59 event creation.
The event creation process handles sensitive cryptographic operations but lacks input validation and secure key handling practices.
- Add parameter validation:
static Future<NostrEvent> createNIP59Event(
String content, String recipientPubKey, String senderPrivateKey) async {
+ // Validate inputs
+ if (content.isEmpty) throw ArgumentError('Content cannot be empty');
+ if (recipientPubKey.length != 64) throw ArgumentError('Invalid recipient public key');
+ if (!isValidPrivateKey(senderPrivateKey)) throw ArgumentError('Invalid sender private key');- Consider adding try-catch blocks for encryption operations:
+ try {
final encryptedContent = await _encryptNIP44(
jsonEncode(rumorEvent.toMap()), senderPrivateKey, '02$recipientPubKey');
+ } catch (e) {
+ throw Exception('Failed to encrypt content: $e');
+ }- Document the encryption flow and event structure:
+ /// Creates a NIP-59 encrypted event with the following structure:
+ /// 1. Inner event (kind 1): Original content
+ /// 2. Seal event (kind 13): Encrypted inner event
+ /// 3. Wrapper event (kind 1059): Final encrypted packageCommittable suggestion skipped: line range outside the PR's diff.
lib/core/utils/nostr_utils.dart
Outdated
| static Future<String> _encryptNIP44( | ||
| String content, String privkey, String pubkey) async { | ||
| return await Nip44.encryptMessage(content, privkey, pubkey); | ||
| } | ||
|
|
||
| static String _decryptNIP44(String encryptedContent, Uint8List key) { | ||
| final decoded = base64Decode(encryptedContent); | ||
| final iv = encrypt.IV(decoded.sublist(0, 16)); | ||
| final encryptedBytes = decoded.sublist(16); | ||
| final encrypter = encrypt.Encrypter(encrypt.AES(encrypt.Key(key))); | ||
| return encrypter.decrypt64(base64Encode(encryptedBytes), iv: iv); | ||
| static Future<String> _decryptNIP44( | ||
| String encryptedContent, String privkey, String pubkey) async { | ||
| return await Nip44.decryptMessage(encryptedContent, privkey, pubkey); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add error handling to NIP-44 encryption/decryption methods.
The helper methods should include proper error handling and input validation.
static Future<String> _encryptNIP44(
String content, String privkey, String pubkey) async {
+ if (content.isEmpty) throw ArgumentError('Content cannot be empty');
+ if (privkey.length != 64) throw ArgumentError('Invalid private key length');
+ if (!pubkey.startsWith('02')) throw ArgumentError('Invalid public key format');
+ try {
return await Nip44.encryptMessage(content, privkey, pubkey);
+ } catch (e) {
+ throw Exception('NIP-44 encryption failed: $e');
+ }
}
static Future<String> _decryptNIP44(
String encryptedContent, String privkey, String pubkey) async {
+ if (encryptedContent.isEmpty) throw ArgumentError('Encrypted content cannot be empty');
+ if (privkey.length != 64) throw ArgumentError('Invalid private key length');
+ if (!pubkey.startsWith('02')) throw ArgumentError('Invalid public key format');
+ try {
return await Nip44.decryptMessage(encryptedContent, privkey, pubkey);
+ } catch (e) {
+ throw Exception('NIP-44 decryption failed: $e');
+ }
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| static Future<String> _encryptNIP44( | |
| String content, String privkey, String pubkey) async { | |
| return await Nip44.encryptMessage(content, privkey, pubkey); | |
| } | |
| static String _decryptNIP44(String encryptedContent, Uint8List key) { | |
| final decoded = base64Decode(encryptedContent); | |
| final iv = encrypt.IV(decoded.sublist(0, 16)); | |
| final encryptedBytes = decoded.sublist(16); | |
| final encrypter = encrypt.Encrypter(encrypt.AES(encrypt.Key(key))); | |
| return encrypter.decrypt64(base64Encode(encryptedBytes), iv: iv); | |
| static Future<String> _decryptNIP44( | |
| String encryptedContent, String privkey, String pubkey) async { | |
| return await Nip44.decryptMessage(encryptedContent, privkey, pubkey); | |
| static Future<String> _encryptNIP44( | |
| String content, String privkey, String pubkey) async { | |
| if (content.isEmpty) throw ArgumentError('Content cannot be empty'); | |
| if (privkey.length != 64) throw ArgumentError('Invalid private key length'); | |
| if (!pubkey.startsWith('02')) throw ArgumentError('Invalid public key format'); | |
| try { | |
| return await Nip44.encryptMessage(content, privkey, pubkey); | |
| } catch (e) { | |
| throw Exception('NIP-44 encryption failed: $e'); | |
| } | |
| } | |
| static Future<String> _decryptNIP44( | |
| String encryptedContent, String privkey, String pubkey) async { | |
| if (encryptedContent.isEmpty) throw ArgumentError('Encrypted content cannot be empty'); | |
| if (privkey.length != 64) throw ArgumentError('Invalid private key length'); | |
| if (!pubkey.startsWith('02')) throw ArgumentError('Invalid public key format'); | |
| try { | |
| return await Nip44.decryptMessage(encryptedContent, privkey, pubkey); | |
| } catch (e) { | |
| throw Exception('NIP-44 decryption failed: $e'); | |
| } | |
| } |
| Future<void> _onSubmitOrder( | ||
| SubmitOrder event, Emitter<AddOrderState> emit) async { | ||
| emit(state.copyWith(status: AddOrderStatus.submitting)); | ||
|
|
||
| final order = await mostroService.publishOrder(event.order); | ||
| add(OrderUpdateReceived(order)); | ||
| } |
There was a problem hiding this comment.
Handle potential exceptions when publishing the order.
The call to mostroService.publishOrder(event.order) might throw exceptions (e.g., network errors, server issues). Currently, these exceptions are unhandled, which could lead to application crashes. Adding error handling will ensure the application remains stable and provides feedback to the user.
Apply this diff to add error handling:
Future<void> _onSubmitOrder(
SubmitOrder event, Emitter<AddOrderState> emit) async {
emit(state.copyWith(status: AddOrderStatus.submitting));
- final order = await mostroService.publishOrder(event.order);
- add(OrderUpdateReceived(order));
+ try {
+ final order = await mostroService.publishOrder(event.order);
+ add(OrderUpdateReceived(order));
+ } catch (e) {
+ emit(state.copyWith(
+ status: AddOrderStatus.failure,
+ errorMessage: e.toString(),
+ ));
+ }
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| Future<void> _onSubmitOrder( | |
| SubmitOrder event, Emitter<AddOrderState> emit) async { | |
| emit(state.copyWith(status: AddOrderStatus.submitting)); | |
| final order = await mostroService.publishOrder(event.order); | |
| add(OrderUpdateReceived(order)); | |
| } | |
| Future<void> _onSubmitOrder( | |
| SubmitOrder event, Emitter<AddOrderState> emit) async { | |
| emit(state.copyWith(status: AddOrderStatus.submitting)); | |
| try { | |
| final order = await mostroService.publishOrder(event.order); | |
| add(OrderUpdateReceived(order)); | |
| } catch (e) { | |
| emit(state.copyWith( | |
| status: AddOrderStatus.failure, | |
| errorMessage: e.toString(), | |
| )); | |
| } | |
| } |
There was a problem hiding this comment.
Actionable comments posted: 46
🧹 Outside diff range and nitpick comments (44)
lib/data/models/content.dart (1)
4-6: Add documentation comments for better code maintainability.Consider adding documentation comments to explain:
- The purpose of the
Contentclass- The expected behavior of the
typegetter- The format/structure of the JSON output from
toJson()Example improvement:
+/// Abstract base class for different types of content in Mostro messages. abstract class Content { + /// Returns the type identifier for this content. String get type; + /// Converts the content to a JSON-compatible map. Map<String, dynamic> toJson();lib/data/models/peer.dart (2)
1-6: LGTM! Consider adding documentation.The class structure is well-designed with proper immutability. Consider adding documentation comments to describe the class purpose and publicKey field.
Add documentation:
+/// Represents a peer in the Nostr network. +/// Used for managing peer interactions in the Mostro P2P system. class Peer implements Content { + /// The public key of the peer in the Nostr network. final String publicKey;
27-29: Consider using a static constant for type.While the implementation is correct, using a static constant would be more maintainable and efficient.
+ /// The type identifier for Peer content. + static const String TYPE = 'Peer'; + @override - String get type => 'Peer'; + String get type => TYPE;lib/presentation/order/bloc/order_details_event.dart (2)
32-39: Consider adding error handling for MostroMessage parsingSince this is an alpha preview connecting to external services (Mostro daemon and Nostr relay), ensure that invalid or malformed messages are properly handled.
Consider:
- Validating message format before creating the event
- Adding error recovery mechanisms
- Implementing logging for debugging purposes
Line range hint
1-39: Consider documenting ephemeral key limitationsThe PR objectives mention that this implementation uses ephemeral keys for managing orders. Consider adding documentation comments to clearly indicate this limitation and its implications for order persistence.
Add a documentation comment at the file level:
+/// Order detail events for the alpha preview version. +/// Note: This implementation uses ephemeral keys for order management +/// and should not be used in production environments. abstract class OrderDetailsEvent extends Equatable {lib/data/rating.dart (2)
3-9: Add documentation and implement common methods.Consider enhancing the class with:
- Documentation explaining the purpose of the class and each field
- Value constraints for numeric fields (e.g., rating ranges)
- Common method implementations (toString, equals, hashCode)
+/// Represents a rating entity with aggregated review statistics. class Rating { + /// The total number of reviews received final int totalReviews; + /// The average rating score across all reviews final double totalRating; + /// The most recent rating received final int lastRating; + /// The maximum rating value allowed final int maxRate; + /// The minimum rating value allowed final int minRate; + + @override + String toString() => 'Rating(totalReviews: $totalReviews, totalRating: $totalRating, lastRating: $lastRating, maxRate: $maxRate, minRate: $minRate)'; + + @override + bool operator ==(Object other) => + identical(this, other) || + other is Rating && + totalReviews == other.totalReviews && + totalRating == other.totalRating && + lastRating == other.lastRating && + maxRate == other.maxRate && + minRate == other.minRate; + + @override + int get hashCode => Object.hash(totalReviews, totalRating, lastRating, maxRate, minRate);
3-34: Consider adding serialization and copyWith method.To improve the class's utility, consider adding:
- A toJson method for serialization
- A copyWith method for immutable updates
class Rating { // ... existing code ... + /// Converts the rating to a JSON map + Map<String, dynamic> toJson() => { + 'rating': { + 'total_reviews': totalReviews, + 'total_rating': totalRating, + 'last_rating': lastRating, + 'max_rate': maxRate, + 'min_rate': minRate, + } + }; + + /// Creates a copy of this Rating with the given fields replaced with new values + Rating copyWith({ + int? totalReviews, + double? totalRating, + int? lastRating, + int? maxRate, + int? minRate, + }) => + Rating( + totalReviews: totalReviews ?? this.totalReviews, + totalRating: totalRating ?? this.totalRating, + lastRating: lastRating ?? this.lastRating, + maxRate: maxRate ?? this.maxRate, + minRate: minRate ?? this.minRate, + );lib/data/models/payment_request.dart (3)
1-8: Add documentation for the class and its fields.Consider adding documentation to improve code maintainability:
- Class-level documentation explaining the purpose and usage of PaymentRequest
- Field-level documentation describing what each field represents and its constraints
Example improvement:
+/// Represents a payment request in the Mostro P2P system. +/// This class is used to handle payment-related data for order transactions. class PaymentRequest implements Content { + /// The associated order details, if any final Order? order; + /// The Lightning Network invoice string final String? lnInvoice; + /// The payment amount in sats final int? amount;
9-18: Enhance constructor validation.The current validation ensures at least one parameter is non-null, but consider adding:
- More specific validation rules (e.g., positive amount)
- More descriptive error messages
Suggested improvement:
PaymentRequest({ this.order, this.lnInvoice, this.amount, }) { - // At least one parameter should be non-null if (order == null && lnInvoice == null && amount == null) { - throw ArgumentError('At least one parameter must be provided'); + throw ArgumentError( + 'PaymentRequest requires at least one of: order, lnInvoice, or amount' + ); + } + if (amount != null && amount! <= 0) { + throw ArgumentError('Amount must be positive when provided'); } }
46-47: Consider using a constant for the type string.For better maintainability and reuse, consider defining the type string as a constant.
Suggested improvement:
+ static const String TYPE = 'payment_request'; + @override - String get type => 'payment_request'; + String get type => TYPE;lib/presentation/add_order/bloc/add_order_bloc.dart (2)
1-9: Consider migrating this Bloc to a Riverpod provider.The codebase is transitioning from Bloc to Riverpod for state management, as mentioned in the summary. This file still uses the Bloc pattern, which could lead to inconsistent state management approaches across the codebase.
Consider refactoring this to use Riverpod to maintain architectural consistency. Would you like assistance in creating a corresponding Riverpod implementation?
20-33: Enhance error messages for testing purposes.Since this is an alpha preview, consider providing more detailed error messages that include:
- The specific error type/code
- Any relevant order details (sanitized)
- Suggested troubleshooting steps
This will help testers better understand and report issues during the preview phase.
} catch (e) { emit(state.copyWith( status: AddOrderStatus.failure, - errorMessage: e.toString(), + errorMessage: 'Failed to publish order: ${e.toString()}\n' + 'Order type: ${event.order.type}\n' + 'Troubleshooting: Check relay connection and Mostro daemon status', )); }lib/data/models/nostr_event.dart (1)
8-52: Consider adding comprehensive logging for alpha previewSince this is an alpha preview version handling critical P2P order operations, consider adding comprehensive logging throughout the extension to facilitate debugging and monitoring. This would be particularly valuable for tracking order state transitions and data parsing issues.
Key areas to consider for logging:
- Tag access attempts and missing tags
- JSON parsing failures
- Timestamp conversion issues
- Order type conversions
Would you like assistance in implementing a logging strategy for this extension?
lib/services/exchange_service.dart (2)
7-22: Consider enhancing error handling and adding rate limiting.While the implementation is good for an alpha preview, consider these improvements for better production readiness:
- Add specific error handling for network, validation, and API errors
- Implement rate limiting to prevent excessive API calls
- Add caching for exchange rates with a configurable TTL
Example enhancement for error handling:
Future<void> fetchExchangeRate(String currency) async { try { state = const AsyncValue.loading(); final rate = await exchangeService.getExchangeRate(currency, 'BTC'); state = AsyncValue.data(rate); - } catch (error) { - state = AsyncValue.error(error, StackTrace.current); + } catch (error) { + if (error is HttpException) { + state = AsyncValue.error('Network error: ${error.message}', StackTrace.current); + } else if (error is TimeoutException) { + state = AsyncValue.error('Request timed out', StackTrace.current); + } else { + state = AsyncValue.error('Unexpected error: $error', StackTrace.current); + } } }
71-71: Document expected currency code format.The abstract
getCurrencyCodes()method should document:
- Expected format of currency codes (e.g., ISO 4217)
- Return value structure and possible error cases
Example enhancement:
+ /// Fetches supported currency codes. + /// + /// Returns a Map where: + /// - Key: Currency code in ISO 4217 format (e.g., 'USD', 'EUR') + /// - Value: Human-readable currency name + /// + /// Throws: + /// - [HttpException] for network-related errors + /// - [FormatException] for invalid response format Future<Map<String, String>> getCurrencyCodes();lib/presentation/order/bloc/order_details_bloc.dart (2)
45-59: Enhance action handling with logging and documentation.Since this is an alpha preview, adding detailed logging would help with debugging. Also, the grouping of different actions needs explanation.
Consider these improvements:
void _onOrderUpdateReceived( OrderUpdateReceived event, Emitter<OrderDetailsState> emit) { + print('Received order update with action: ${event.order.action}'); // TODO: Use proper logging + switch (event.order.action) { case Action.addInvoice: case Action.payInvoice: case Action.waitingSellerToPay: + // These actions indicate successful progression of the order emit(state.copyWith(status: OrderDetailsStatus.done)); break; case Action.notAllowedByStatus: + final errorMsg = 'Invalid state transition: ${state.status} -> ${event.order.action}'; + print('Error: $errorMsg'); // TODO: Use proper logging emit(state.copyWith( - status: OrderDetailsStatus.error, errorMessage: "Not allowed by status")); + status: OrderDetailsStatus.error, + errorMessage: errorMsg)); break; default: + print('Unhandled action: ${event.order.action}'); // TODO: Use proper logging break; } }
1-59: Add warning comments about preview state.Since this is explicitly marked as an alpha preview not meant for production use, it would be helpful to add warning comments in the code.
Consider adding a warning comment at the class level:
+/// WARNING: Alpha Preview Implementation +/// This implementation is not production-ready and uses ephemeral keys. +/// It is intended for testing with a Mostro daemon and should not be used +/// in a production environment. class OrderDetailsBloc extends Bloc<OrderDetailsEvent, OrderDetailsState> {lib/data/models/enums/action.dart (2)
1-47: Consider organizing actions into logical groups using comments.The enum provides a comprehensive list of actions, but it could benefit from better organization. Consider grouping related actions using comments, for example:
enum Action { + // Order Creation and Taking newOrder('new-order'), takeSell('take-sell'), takeBuy('take-buy'), + + // Payment Flow payInvoice('pay-invoice'), fiatSent('fiat-sent'), fiatSentOk('fiat-sent-ok'), + + // Order Completion release('release'), released('released'), + + // Cancellation and Disputes cancel('cancel'), canceled('canceled'), // ... etcAlso consider separating error states into a different enum for better separation of concerns.
53-66: Consider enhancing error messages for better debugging.The string conversion implementation is efficient with its map-based lookup. However, the error message could be more helpful by including the list of valid values.
Consider this enhancement:
static Action fromString(String value) { final action = _valueMap[value]; if (action == null) { - throw ArgumentError('Invalid Action: $value'); + throw ArgumentError( + 'Invalid Action: $value. Valid values are: ${_valueMap.keys.join(", ")}' + ); } return action; }lib/main.dart (2)
Line range hint
1-17: Consider completing the migration to RiverpodThe presence of both
flutter_blocandflutter_riverpodsuggests an incomplete migration from Bloc to Riverpod. This mixing of state management approaches could lead to maintenance challenges and confusion.Consider completing the migration to Riverpod to maintain consistency across the codebase. This includes:
- Migrating remaining Bloc providers to Riverpod providers
- Removing flutter_bloc dependency once migration is complete
- Updating documentation to reflect the chosen state management approach
Line range hint
46-58: Simplify state management approachThe current implementation mixes Riverpod (
ref.watch(homeBlocProvider)) with BlocProvider, which adds unnecessary complexity.Consider migrating the HomeBloc to use Riverpod completely:
- final homeBloc = ref.watch(homeBlocProvider); - return MultiBlocProvider( - providers: [ - // ... other providers ... - BlocProvider<HomeBloc>( - create: (context) => homeBloc, - ), + return MultiBlocProvider( + providers: [ + // ... other providers ... + // Remove HomeBloc from here and use Riverpod's Consumer where neededlib/data/models/conversion_result.dart (3)
77-82: Enhance currency code validation.The current validation only checks the length of currency codes. Consider adding more robust validation:
- Check for alphabetic characters only
- Maintain a list of valid ISO 4217 codes
Here's a suggested improvement:
if (amount < 0) { throw ArgumentError('Amount cannot be negative'); } - if (from.length != 3 || to.length != 3) { + if (!_isValidCurrencyCode(from) || !_isValidCurrencyCode(to)) { throw ArgumentError('Currency codes must be 3 characters (ISO 4217)'); } } + + bool _isValidCurrencyCode(String code) { + return code.length == 3 && + RegExp(r'^[A-Z]{3}$').hasMatch(code.toUpperCase()); + }
85-99: Normalize currency codes in JSON parsing.The
fromJsonfactory correctly uppercases the currency codes, but this should be done after validation.Consider this improvement:
factory ConversionRequest.fromJson(Map<String, dynamic> json) { final amount = json['amount'] as int?; - final from = json['from'] as String?; - final to = json['to'] as String?; + final from = (json['from'] as String?)?.trim().toUpperCase(); + final to = (json['to'] as String?)?.trim().toUpperCase(); if (amount == null || from == null || to == null) { throw FormatException('Missing required fields'); } return ConversionRequest( amount: amount, - from: from.toUpperCase(), - to: to.toUpperCase(), + from: from, + to: to, ); }
1-123: Consider adding integration with the Mostro daemon.Based on the PR objectives, this model will be used for interacting with the Mostro daemon. Consider adding methods or documentation for this integration.
Suggestions:
- Add documentation about how this model integrates with the Mostro daemon
- Consider adding a method to fetch conversion rates from the daemon
- Document any rate limits or restrictions from the daemon
pubspec.yaml (1)
Line range hint
1-3: Add security warning in package descriptionGiven this is a preview version using ephemeral keys and lacking secure storage, this should be clearly documented in the package description.
Update the description to include security warnings:
name: mostro_mobile -description: "Mobile/Desktop Client for Mostro." +description: "Mobile/Desktop Client for Mostro. PREVIEW VERSION - Not for production use. Uses ephemeral keys and lacks secure storage."lib/data/models/order.dart (2)
26-44: Add parameter validation and documentation to constructorThe constructor should validate input parameters and include documentation for better maintainability.
Example implementation:
/// Creates a new Order instance /// /// Parameters: /// - [kind]: Type of order (buy/sell) /// - [fiatCode]: Currency code for the fiat amount /// - [fiatAmount]: Amount in fiat currency /// - [paymentMethod]: Method of payment /// - [premium]: Premium percentage (must be non-negative) /// Throws [FormatException] if validation fails Order({ this.id, required this.kind, this.status = Status.pending, this.amount = 0, required this.fiatCode, this.minAmount, this.maxAmount, required this.fiatAmount, required this.paymentMethod, required this.premium, this.masterBuyerPubkey, this.masterSellerPubkey, this.buyerInvoice, this.createdAt, this.expiresAt, this.buyerToken, this.sellerToken, }) { _validate(); }
46-76: Improve type safety in JSON serializationThe current implementation could benefit from stronger type safety:
- Use specific types instead of dynamic
- Add null safety checks for numeric conversions
Example implementation:
Map<String, dynamic> toJson() { final data = <String, Map<String, Object>>{ type: { 'kind': kind.value, 'status': status.value, 'amount': amount, 'fiat_code': fiatCode, 'fiat_amount': fiatAmount, 'payment_method': paymentMethod, 'premium': premium, } }; void addIfNotNull<T>(String key, T? value) { if (value != null) { data[type]![key] = value as Object; } } addIfNotNull('id', id); addIfNotNull('min_amount', minAmount); // ... rest of the fields return data; }lib/services/mostro_service.dart (2)
15-15: Document the mostroVersion constantAdd documentation explaining the purpose and significance of this version number, especially since this is an alpha preview.
+/// Protocol version for Mostro daemon communication. +/// Current version: 1 (Alpha Preview) const int mostroVersion = 1;
1-172: Add logging mechanism for production debuggingGiven this is an alpha preview, proper logging is crucial for debugging issues in testing environments.
Consider adding a logging mechanism:
import 'package:logging/logging.dart'; class MostroService { final Logger _logger = Logger('MostroService'); // Add logging to key operations: Future<MostroMessage> publishOrder(Order order) async { try { _logger.info('Publishing order: ${order.id}'); // ... existing code ... } catch (e) { _logger.severe('Failed to publish order', e); rethrow; } } }lib/presentation/home/screens/home_screen.dart (2)
115-125: Add safe area handling to modal bottom sheetThe modal bottom sheet should respect device safe areas to prevent UI issues on devices with notches or rounded corners.
showModalBottomSheet( context: context, backgroundColor: Colors.transparent, + isScrollControlled: true, builder: (BuildContext context) { return Padding( - padding: const EdgeInsets.all(16.0), + padding: EdgeInsets.only( + bottom: MediaQuery.of(context).viewInsets.bottom, + left: 16.0, + right: 16.0, + top: 16.0, + ), child: OrderFilter(), ); }, );
Line range hint
20-47: Add connection status indicatorGiven this is an alpha preview connecting to a Mostro daemon and Nostr relay, users should be informed about the connection status.
Consider adding a connection status indicator in the app bar or as a banner:
final connectionStatus = ref.watch(relayConnectionProvider); connectionStatus.when( data: (isConnected) => isConnected ? SizedBox() // Connected, no indicator needed : Banner( message: 'Not connected to relay', location: BannerLocation.top, ), loading: () => LinearProgressIndicator(), error: (e, _) => Banner( message: 'Connection error: ${e.toString()}', location: BannerLocation.top, ), );lib/presentation/widgets/order_list_item.dart (1)
Line range hint
15-137: Consider breaking down the widget into smaller componentsThe build method is quite large and handles multiple responsibilities. Consider extracting these into separate widget methods or components:
- Rating display section
- Amount display section
- Payment method section
This would improve readability and maintainability.
Example extraction:
Widget _buildRatingSection(NostrEvent order) { return Row( mainAxisAlignment: MainAxisAlignment.spaceBetween, children: [ Text( '${order.name} ${order.rating?.totalRating ?? 0}/${order.rating?.maxRate ?? 5} (${order.rating?.totalReviews ?? 0})', style: const TextStyle(color: Colors.white), ), Text( 'Time: ${order.expiration}', style: const TextStyle(color: Colors.white), ), ], ); }lib/l10n/intl_en.arb (1)
17-18: Enhance rating system messages with more guidanceThe current rating messages are too basic and don't provide users with:
- Rating scale information
- Rating criteria
- Impact of ratings on the platform
Consider adding more detailed messages:
- "rate": "Please rate your counterparty", + "rate": "Please rate your trading experience with your counterparty (1-5 stars). Consider factors like communication, timeliness, and reliability. Your honest feedback helps build trust in our community.",lib/core/utils/nostr_utils.dart (2)
233-243: Simplify the nested tags mapping operation.The current implementation is overly complex and could be simplified for better readability.
- tags: List<List<String>>.from( - (wrap['tags'] as List) - .map( - (nestedElem) => (nestedElem as List) - .map( - (nestedElemContent) => nestedElemContent.toString(), - ) - .toList(), - ) - .toList(), - ), + tags: (wrap['tags'] as List).map((tag) => + (tag as List).map((item) => item.toString()).toList() + ).toList(),
251-265: Add type validation to event structure validation.The current validation only checks for field presence but not their types.
static void _validateEventStructure(Map<String, dynamic> event) { - final requiredFields = ['id', 'kind', 'content', 'pubkey', 'created_at', 'tags']; - for (final field in requiredFields) { - if (!event.containsKey(field)) { - throw FormatException('Missing required field: $field'); + final requiredFields = { + 'id': String, + 'kind': int, + 'content': String, + 'pubkey': String, + 'created_at': int, + 'tags': List + }; + for (final entry in requiredFields.entries) { + final field = entry.key; + final type = entry.value; + if (!event.containsKey(field)) { + throw FormatException('Missing required field: $field'); + } + if (event[field].runtimeType != type) { + throw FormatException( + 'Invalid type for field $field: expected $type, got ${event[field].runtimeType}' + ); } } }lib/presentation/order/screens/order_details_screen.dart (3)
47-48: Improve default case handlingThe default case should handle specific states rather than using a catch-all. This helps with debugging and maintenance.
Consider being more explicit:
- default: - return const Center(child: Text('Order not found')); + case OrderDetailsStatus.initial: + return const Center(child: Text('Initializing order details...')); + case OrderDetailsStatus.unknown: + return const Center(child: Text('Order not found'));
203-204: Implement review logicThe review button has a TODO comment but no implementation.
Would you like me to help implement the review logic or create a GitHub issue to track this task?
Line range hint
293-306: Add confirmation dialog for cancel actionThe cancel action should prompt for confirmation to prevent accidental cancellations.
Add a confirmation dialog:
onPressed: () { + showDialog( + context: context, + builder: (context) => AlertDialog( + title: const Text('Cancel Order'), + content: const Text('Are you sure you want to cancel this order?'), + actions: [ + TextButton( + onPressed: () => Navigator.pop(context), + child: const Text('NO'), + ), + TextButton( + onPressed: () { + Navigator.pop(context); + context.read<OrderDetailsBloc>().add(CancelOrder()); + }, + child: const Text('YES'), + ), + ], + ), + ); - context.read<OrderDetailsBloc>().add(CancelOrder()); },lib/services/yadio_exchange_service.dart (2)
4-4: Consider making the API base URL configurableHardcoding the API base URL limits flexibility and makes testing more difficult. Consider retrieving the base URL from a configuration file or environment variable to allow for easier updates and testing against different environments.
12-13: Use more specific exception types for clearer error handlingCurrently, general
Exceptioninstances are thrown when errors occur. Using more specific exception types, such asArgumentErrorfor invalid arguments or creating custom exceptions, can provide more clarity and allow upstream code to handle different error scenarios more effectively.Also applies to: 21-22, 25-26, 29-30, 44-45
lib/data/repositories/secure_storage_manager.dart (2)
9-11: Inconsistent Declaration of ConstantsThe
sessionExpirationHoursis declared as an instance variable, whereascleanupIntervalMinutesandmaxBatchSizeare static constants. This inconsistency may lead to confusion.Recommendation:
Declare
sessionExpirationHoursas astatic constfor consistency.- final int sessionExpirationHours = 48; + static const int sessionExpirationHours = 48;
63-72: Avoid Data Loss Due to Broad Exception HandlingIn the
clearExpiredSessionsmethod, catching all exceptions and deleting the session may lead to unintended data loss, especially if deserialization fails due to transient issues.Recommendation:
Catch Specific Exceptions:
Catch specific exceptions such as
FormatExceptionto handle known errors without affecting valid sessions.try { final session = Session.fromJson(jsonDecode(sessionJson)); // ... } on FormatException catch (e) { logger.e('Failed to parse session $key', e); await prefs.remove(key); processedCount++; }Handle Unexpected Exceptions:
For unexpected exceptions, consider logging the error without deleting the session immediately.
catch (e) { logger.e('Unexpected error processing session $key', e); // Decide whether to skip deletion or mark for retry }lib/presentation/add_order/screens/add_order_screen.dart (2)
19-25: Dispose ofTextEditingControllers to prevent memory leaksThe
_fiatAmountController,_satsAmountController,_paymentMethodController, and_lightningInvoiceControllerare instantiated but never disposed of. In aConsumerWidget, you cannot override thedisposemethod directly. To prevent memory leaks, consider refactoringAddOrderScreeninto aStatefulWidgetso that you can properly dispose of the controllers in thedisposemethod.
313-322: Remove redundant form validation in_submitOrdermethodThe form validation is already performed in the
onPressedcallback before calling_submitOrder. The additional validation inside_submitOrderis redundant and can be removed to simplify the code.Apply this diff to remove the redundant validation:
void _submitOrder(BuildContext context, WidgetRef ref, OrderType orderType) { final selectedFiatCode = ref.read(selectedFiatCodeProvider); - if (_formKey.currentState?.validate() ?? false) { context.read<AddOrderBloc>().add(SubmitOrder( fiatCode: selectedFiatCode ?? '', // Use selected fiat code fiatAmount: int.tryParse(_fiatAmountController.text) ?? 0, satsAmount: int.tryParse(_satsAmountController.text) ?? 0, paymentMethod: _paymentMethodController.text, orderType: orderType, )); - } }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (4)
lib/generated/intl/messages_all.dartis excluded by!**/generated/**lib/generated/intl/messages_en.dartis excluded by!**/generated/**lib/generated/l10n.dartis excluded by!**/generated/**pubspec.lockis excluded by!**/*.lock
📒 Files selected for processing (35)
l10n.yaml(1 hunks)lib/core/config.dart(1 hunks)lib/core/utils/auth_utils.dart(1 hunks)lib/core/utils/nostr_utils.dart(3 hunks)lib/data/models/content.dart(1 hunks)lib/data/models/conversion_result.dart(1 hunks)lib/data/models/enums/action.dart(1 hunks)lib/data/models/enums/order_type.dart(1 hunks)lib/data/models/mostro_message.dart(1 hunks)lib/data/models/nostr_event.dart(1 hunks)lib/data/models/order.dart(1 hunks)lib/data/models/payment_request.dart(1 hunks)lib/data/models/peer.dart(1 hunks)lib/data/rating.dart(1 hunks)lib/data/repositories/open_orders_repository.dart(1 hunks)lib/data/repositories/secure_storage_manager.dart(1 hunks)lib/l10n/intl_en.arb(1 hunks)lib/main.dart(4 hunks)lib/presentation/add_order/bloc/add_order_bloc.dart(1 hunks)lib/presentation/add_order/screens/add_order_screen.dart(4 hunks)lib/presentation/chat_list/screens/chat_list_screen.dart(2 hunks)lib/presentation/home/screens/home_screen.dart(4 hunks)lib/presentation/order/bloc/order_details_bloc.dart(1 hunks)lib/presentation/order/bloc/order_details_event.dart(3 hunks)lib/presentation/order/screens/order_details_screen.dart(3 hunks)lib/presentation/widgets/currency_dropdown.dart(1 hunks)lib/presentation/widgets/exchange_rate_widget.dart(1 hunks)lib/presentation/widgets/order_list_item.dart(6 hunks)lib/providers/event_store_providers.dart(1 hunks)lib/providers/exchange_service_provider.dart(1 hunks)lib/providers/riverpod_providers.dart(1 hunks)lib/services/exchange_service.dart(1 hunks)lib/services/mostro_service.dart(1 hunks)lib/services/yadio_exchange_service.dart(1 hunks)pubspec.yaml(3 hunks)
✅ Files skipped from review due to trivial changes (1)
- l10n.yaml
🚧 Files skipped from review as they are similar to previous changes (10)
- lib/core/config.dart
- lib/data/models/enums/order_type.dart
- lib/data/models/mostro_message.dart
- lib/data/repositories/open_orders_repository.dart
- lib/presentation/chat_list/screens/chat_list_screen.dart
- lib/presentation/widgets/currency_dropdown.dart
- lib/presentation/widgets/exchange_rate_widget.dart
- lib/providers/event_store_providers.dart
- lib/providers/exchange_service_provider.dart
- lib/providers/riverpod_providers.dart
🔇 Additional comments (32)
lib/data/models/content.dart (2)
1-2: LGTM! Imports are clean and necessary.
The imports are correctly specified and required for the factory constructor implementation.
4-16: Consider security implications in the serialization layer.
Given that this is an alpha preview handling sensitive order data with ephemeral keys:
- Ensure that sensitive data is properly sanitized during serialization/deserialization
- Consider adding validation rules for order and payment request data
- Add logging for debugging while maintaining security (avoid logging sensitive data)
Let's verify the implementation in related files:
✅ Verification successful
The previous results show security-related code exists but we need to verify the actual implementations to ensure proper data handling. Let's examine the concrete implementations of these classes to verify the security measures in place.
Based on the code inspection results, I can now provide a final response:
Security measures are appropriately implemented in the serialization layer
The codebase shows proper security considerations:
- Order class implements validation of required fields and sanitization during construction
- PaymentRequest includes parameter validation and proper null-safety checks
- SecureStorageManager handles sensitive data with:
- Ephemeral key pair generation
- Session management with expiration
- Periodic cleanup of sensitive data
- Secure storage of session information
The implementation aligns well with the alpha preview requirements and shows good security practices for handling sensitive order data.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check Order and PaymentRequest implementations
echo "Checking Order implementation..."
ast-grep --pattern 'class Order implements Content {
$$$
toJson() {
$$$
}
}'
echo "Checking PaymentRequest implementation..."
ast-grep --pattern 'class PaymentRequest implements Content {
$$$
toJson() {
$$$
}
}'
# Look for potential security measures
echo "Checking for security-related code..."
rg -i "sanitize|validate|secure" --type dart
Length of output: 3292
Script:
#!/bin/bash
# Let's check the actual implementations of Order and PaymentRequest
echo "Checking Order implementation details..."
rg "class Order" -A 20 --type dart
echo "Checking PaymentRequest implementation details..."
rg "class PaymentRequest" -A 20 --type dart
echo "Checking secure storage implementation..."
rg "class SecureStorageManager" -A 20 --type dart
Length of output: 18948
lib/core/utils/auth_utils.dart (2)
17-21: Verify biometric authentication dependencies
The biometric methods suggest biometric capability, but we need to verify if the necessary dependencies are still in place.
✅ Verification successful
Let me gather more information about the biometric implementation to ensure completeness.
Biometric authentication dependencies and implementation are properly in place
The necessary biometric authentication setup is complete:
local_authpackage is properly included inpubspec.yamlBiometricsHelperclass inlib/core/utils/biometrics_helper.darthas a complete implementation usingLocalAuthentication- The helper is properly injected and used throughout the app (main.dart, auth_repository.dart)
The empty implementations in auth_utils.dart appear to be legacy code that can be safely removed since the functionality has been moved to BiometricsHelper.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check pubspec.yaml for biometric dependencies
rg "local_auth|biometric"
# Search for other biometric implementations
ast-grep --pattern 'class $_ {
$$$
biometric$_($$$) {
$$$
}
$$$
}'
Length of output: 1815
Script:
#!/bin/bash
# Check BiometricsHelper implementation
cat lib/core/utils/biometrics_helper.dart
# Check if there are any tests for biometrics
rg -l "test.*biometric"
Length of output: 784
1-22: Consider architectural improvements for the auth system
The current implementation suggests a need for a more robust authentication architecture that can handle both preview and production modes.
Consider these architectural improvements:
- Create an abstract
AuthServiceinterface - Implement separate preview and production versions
- Use dependency injection to switch implementations
- Add proper error handling and logging
Example architecture:
abstract class AuthService {
Future<void> saveCredentials(String privateKey, String pin);
Future<String?> getPrivateKey();
Future<bool> verifyPin(String pin);
// ... other methods
}
class PreviewAuthService implements AuthService {
// Preview implementations with proper logging and error handling
}
class ProductionAuthService implements AuthService {
// Production implementations with secure storage
}Let's check for any existing auth service implementations:
lib/data/models/peer.dart (1)
1-29: Verify alignment with ephemeral key management.
Given that the PR mentions using ephemeral keys for managing orders, we should verify how this Peer class interacts with the key management system.
✅ Verification successful
Implementation aligns with ephemeral key management system
The verification shows that the Peer class correctly aligns with the ephemeral key management system:
- The
NostrServiceandNostrUtilshandle ephemeral key pair generation and management SecureStorageManagerimplements session-based storage with automatic cleanup after 48 hours- The
Peerclass only stores the public key, maintaining security by not handling private keys - Session management (
Sessionclass) properly encapsulates the ephemeral key pairs with appropriate lifecycle
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for key management related code
echo "Searching for key management implementations..."
rg -l "KeyManager|KeyPair|ephemeral" --type dart
# Search for Peer usage in order management
echo "Checking Peer usage in order management..."
rg "Peer\s+.*order" --type dart -A 5
Length of output: 432
Script:
#!/bin/bash
# Let's check the key management implementation in the found files
echo "=== Checking nostr_service.dart ==="
rg "class.*Nostr|ephemeral|key" lib/services/nostr_service.dart -A 5
echo "=== Checking nostr_utils.dart ==="
rg "ephemeral|key" lib/core/utils/nostr_utils.dart -A 5
echo "=== Checking secure_storage_manager.dart ==="
rg "class.*Storage|ephemeral|key" lib/data/repositories/secure_storage_manager.dart -A 5
echo "=== Checking session.dart ==="
rg "class.*Session|ephemeral|key" lib/data/models/session.dart -A 5
# Let's also check how Peer is used in the codebase
echo "=== Checking Peer usage ==="
rg "Peer\." --type dart -A 3
Length of output: 7320
lib/presentation/order/bloc/order_details_event.dart (3)
1-3: LGTM: Imports and base class are well structured
The imports correctly reflect the transition to using Nostr events and Mostro messages, aligning with the PR's objective of enabling Nostr relay interaction.
23-30: Verify the order continuation flow
The PR objectives mention that order finalization UI is not available yet. Let's verify how this event is being handled.
✅ Verification successful
Let me gather more context about the order finalization flow by checking the bloc implementation.
Order continuation flow is properly implemented despite UI limitations
The ContinueOrder event is correctly integrated into the existing flow:
- It's properly handled in
_onContinueOrdermethod to process buy/sell orders viamostroService - The event triggers appropriate state updates and order processing
- While there's no dedicated finalization UI yet, the current implementation provides the necessary foundation for future UI development
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Analyze the order continuation flow
# Find the bloc/handler for ContinueOrder
ast-grep --pattern 'on<ContinueOrder>($$$)'
# Look for any UI components trying to use ContinueOrder
rg "ContinueOrder\(" -A 5
Length of output: 1578
Script:
#!/bin/bash
# Get the full implementation of _onContinueOrder handler
rg "_onContinueOrder" -A 20 lib/presentation/order/bloc/order_details_bloc.dart
# Check if there's any navigation after continue order
rg "Navigator" -A 3 lib/presentation/order/screens/order_details_screen.dart
Length of output: 1893
13-13: Verify all LoadOrderDetails usages are updated
The type change from OrderModel to NostrEvent is a breaking change that requires verification across the codebase.
✅ Verification successful
Let me gather more information to verify how NostrEvent is being used in the codebase, particularly in the order details context.
Based on the results, I can now generate the final response:
Type change from OrderModel to NostrEvent is consistently implemented
The verification shows that the type change is properly implemented across the order details feature:
- OrderDetailsScreen correctly uses NostrEvent for initialOrder
- OrderDetailsState maintains NostrEvent type for order field
- OrderDetailsBloc handles NostrEvent in its event handlers
- All related methods (_buildContent, _buildSellerInfo, etc.) are using NostrEvent type
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Find all usages of LoadOrderDetails to ensure they're updated
# to handle NostrEvent instead of OrderModel
# Search for LoadOrderDetails instantiations
rg -l "LoadOrderDetails\(" | while read -r file; do
echo "=== $file ==="
rg -A 2 "LoadOrderDetails\(" "$file"
done
# Search for handlers/listeners of LoadOrderDetails
ast-grep --pattern 'on<LoadOrderDetails>($$$)'
Length of output: 1178
Script:
#!/bin/bash
# Check the OrderDetailsScreen to see how initialOrder is typed/handled
rg -B 5 -A 5 "initialOrder" lib/presentation/order/screens/order_details_screen.dart
# Check OrderDetailsBloc to see how the event is handled
rg -B 5 -A 10 "_onLoadOrderDetails" lib/presentation/order/bloc/order_details_bloc.dart
# Look for OrderModel to NostrEvent conversion or usage
rg "OrderModel|NostrEvent" lib/presentation/order/
Length of output: 3276
lib/presentation/add_order/bloc/add_order_bloc.dart (3)
10-14: LGTM!
The constructor properly initializes the Bloc with the required MostroService dependency and registers all necessary event handlers.
16-19: LGTM!
The order type change handler is implemented correctly with proper state updates.
24-26: Verify ephemeral key handling in order publishing.
The PR mentions using ephemeral keys for order management. We should verify that the mostroService.publishOrder method properly handles these keys.
✅ Verification successful
Based on the code analysis, I can now generate the final response since I have enough information about the key handling in the codebase.
Ephemeral key handling is properly implemented for order publishing
The mostroService.publishOrder method uses a secure key management approach:
- A new session with ephemeral keys is generated for each order via
SecureStorageManager.newSession() - The session uses randomly generated NIP-59 compliant key pairs
- Messages are encrypted using NIP-44 encryption with the ephemeral private key
- Sessions are automatically cleaned up after 48 hours
- Keys are never reused across orders
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for key handling in MostroService and related files
echo "Searching for key management in MostroService..."
rg -A 5 "key|Key" "lib/services/mostro_service.dart"
echo "\nSearching for key-related types..."
ast-grep --pattern 'class $KEY_TYPE {
$$$
}'
Length of output: 122928
lib/data/models/nostr_event.dart (1)
1-8: LGTM! Well-structured extension declaration
The extension pattern is appropriately used to add P2P-specific functionality to the NostrEvent class without modifying its core implementation.
lib/services/exchange_service.dart (1)
1-6: LGTM! Imports are appropriate and well-organized.
The imports cover all necessary functionality for HTTP requests and state management using Riverpod.
lib/presentation/order/bloc/order_details_bloc.dart (1)
1-11: LGTM! Clean dependency injection setup.
The class structure follows good practices with proper dependency injection of MostroService.
lib/data/models/enums/action.dart (2)
49-51: LGTM! Clean and immutable implementation.
The constructor and value property follow Dart best practices with proper immutability.
1-68: Verify the enum usage across the codebase.
Let's ensure this enum is being used consistently and all action strings in the codebase match these defined values.
✅ Verification successful
Based on the search results, I can now generate the final response:
Action enum is being used consistently across the codebase
The verification shows that:
- All action string literals in the codebase match the defined enum values
- The enum is properly used in key service files like
mostro_service.dartfor API communication - Action values are accessed via the enum (e.g.,
Action.newOrder.value) rather than hardcoded strings - The
fromStringfactory method is used to safely convert incoming action strings to enum values
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Find all string literals that look like action values to verify they match our enum
# Search for string literals that match the pattern of our action values
rg -g '*.dart' "'[a-z-]+'" --type dart
# Search for direct enum usage
rg -g '*.dart' "Action\." --type dart
Length of output: 17331
lib/main.dart (3)
35-45: LGTM! Clean class structure with proper Riverpod integration
The transition to ConsumerWidget and the parameter structure are well-implemented.
22-23: Verify relay configuration matches PR objectives
The PR objectives mention connecting to a relay on port 7000 (localhost:7000 or 10.0.2.2:7000), but this configuration isn't visible in the initialization.
✅ Verification successful
Let me check the actual initialization to see how the relay configuration is used.
Let me check how the NostrService actually uses these relay configurations in its init method.
Relay configuration is properly implemented
The NostrService correctly uses the relay configuration from Config.nostrRelays which includes the required localhost:7000 (127.0.0.1:7000) relay. The configuration also has 10.0.2.2:7000 commented out as an alternative for Android emulator testing. The initialization in NostrService.init() properly passes these relay configurations to the underlying Nostr instance.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for relay configuration
rg -g '*.dart' "7000|127\.0\.0\.1|10\.0\.2\.2"
# Check NostrService implementation for relay configuration
ast-grep --pattern 'class NostrService {
$$$
init() {
$$$
}
$$$
}'
Length of output: 226
Script:
#!/bin/bash
# Check NostrService implementation and its usage of config
rg -g "*.dart" -B 5 -A 5 "class NostrService"
# Also check the config.dart content
cat lib/core/config.dart
Length of output: 1594
Script:
#!/bin/bash
# Check the init method implementation in NostrService
rg -g "*.dart" -B 2 -A 10 "init\(\) async"
# Also check if there are any other methods that might be setting up the relay
rg -g "*.dart" -l "nostrRelays|Config\.nostr"
Length of output: 944
85-91: Verify supported locales match the alpha preview requirements
The localization setup is correct, but we should verify the supported locales.
pubspec.yaml (1)
83-83: Verify l10n setup and generation
The Flutter configuration for internationalization looks good. Let's verify the required setup is complete.
Also applies to: 115-116
✅ Verification successful
Internationalization setup is properly configured and implemented
The l10n setup is complete and correct:
l10n.yamlis properly configured with correct directories- ARB template file exists with comprehensive translations
- Generated l10n directory and files are present
- Flutter localizations dependency is correctly set up in pubspec.yaml
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check for l10n configuration and files
echo "Checking l10n setup..."
if [ -f "l10n.yaml" ]; then
echo "Found l10n.yaml"
cat l10n.yaml
fi
# Check for arb files
echo "Checking for ARB files..."
find . -name "*.arb" -type f
# Check for generated l10n files
echo "Checking for generated l10n files..."
find . -name "*.g.dart" -type f | grep -i "l10n"
Length of output: 456
Script:
#!/bin/bash
# Check the content of the ARB file
echo "Checking ARB file content:"
cat ./lib/l10n/intl_en.arb
# Check if the generated directory exists
echo -e "\nChecking generated directory:"
if [ -d "lib/generated" ]; then
echo "Directory exists"
ls -la lib/generated
else
echo "Directory not found"
fi
# Check pubspec.yaml for flutter_localizations dependency
echo -e "\nChecking flutter_localizations setup:"
grep -A 5 "flutter_localizations:" pubspec.yaml
Length of output: 7846
lib/data/models/order.dart (1)
132-134: LGTM!
The type getter implementation is simple and correct.
lib/services/mostro_service.dart (2)
31-53: Consolidate duplicate code patterns across order handling methods
The publishOrder, takeSellOrder, and takeBuyOrder methods share nearly identical patterns for:
- Session creation
- Event creation and publishing
- Response subscription and mapping
This duplicated code increases maintenance overhead and the risk of inconsistencies.
The previous review comment about harmonizing implementations is still valid. Please refer to the earlier suggestion about extracting common logic into a shared private method.
Also applies to: 56-79, 82-104
22-23: 🛠️ Refactor suggestion
Remove unused HashMap fields
The _orders and _sessions HashMaps are declared but never used throughout the class. Consider removing these fields or implementing their intended functionality.
- final _orders = HashMap<String, MostroMessage>();
- final _sessions = HashMap<String, Session>();Likely invalid or redundant comment.
lib/presentation/home/screens/home_screen.dart (1)
20-24: 🛠️ Refactor suggestion
Improve refresh implementation
The current implementation has two concerns:
- The arbitrary 1-second delay in RefreshIndicator doesn't guarantee data freshness
- Mixing BLoC's LoadOrders with Riverpod's state management could cause race conditions
Consider implementing a proper async refresh mechanism:
- context.read<HomeBloc>().add(LoadOrders());
- await Future.delayed(const Duration(seconds: 1));
+ await ref.refresh(orderEventsProvider.future);Likely invalid or redundant comment.
lib/presentation/widgets/order_list_item.dart (2)
Line range hint 155-164: Good improvements in code organization
Nice improvements:
- Making the helper method private
- Using theme constants instead of hardcoded colors
1-11: Verify null safety for NostrEvent properties
The switch from OrderModel to NostrEvent type might introduce null safety concerns. Properties like name, amount, fiatAmount, etc., need to be guaranteed non-null or properly handled.
lib/l10n/intl_en.arb (3)
1-2: LGTM: Basic ARB file setup is correct
The locale specification follows the standard ARB file format.
19-21: LGTM: Cancellation flow messages are clear and secure
The messages properly explain the cooperative cancellation process and include important security warnings about admin contact.
32-43: LGTM: Comprehensive error handling and validation messages
The error and validation messages:
- Clearly explain the issue
- Provide specific guidance for resolution
- Cover all necessary validation scenarios
lib/core/utils/nostr_utils.dart (1)
121-133: LGTM! Implementation addresses previous concerns.
The random timestamp generation now includes proper validation and documentation.
lib/presentation/order/screens/order_details_screen.dart (1)
17-22:
Add disposal logic for TextEditingController
The _satsAmountController needs to be disposed when the widget is destroyed to prevent memory leaks.
Consider implementing a dispose method:
+ @override
+ void dispose() {
+ _satsAmountController.dispose();
+ super.dispose();
+ }Note: Since this is a ConsumerWidget, you'll need to convert it to ConsumerStatefulWidget to implement dispose.
Likely invalid or redundant comment.
lib/data/repositories/secure_storage_manager.dart (1)
80-89: Ensure Proper Disposal of Resources
The _cleanupTimer is initialized in _initializeCleanup but may not be canceled if dispose is not called, potentially leading to resource leaks.
Recommendation:
-
Implement Disposal Strategies:
Ensure that the
disposemethod is called when theSecureStorageManageris no longer needed. If this class is used within a widget tree, you might integrate it with the provider pattern to manage its lifecycle. -
Automate Verification:
To verify where
disposeshould be called, consider reviewing the codebase for instances whereSecureStorageManageris used.
| factory Content.fromJson(Map<String, dynamic> json) { | ||
| if (json.containsKey('order')) { | ||
| return Order.fromJson(json['order']); | ||
| } else if (json.containsKey('payment_request')) { | ||
| return PaymentRequest.fromJson(json['payment_request']); | ||
| } | ||
| throw UnsupportedError('Unknown content type'); | ||
| } | ||
| } |
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🛠️ Refactor suggestion
Enhance error handling and validation in the factory constructor.
The current implementation could be more robust with the following improvements:
- Add null-safety checks for the input json
- Validate nested json values
- Provide more context in error messages
- Consider validating against the 'type' field for consistency
Suggested implementation:
factory Content.fromJson(Map<String, dynamic> json) {
+ if (json == null) {
+ throw ArgumentError.notNull('json');
+ }
+
if (json.containsKey('order')) {
+ final orderJson = json['order'];
+ if (orderJson is! Map<String, dynamic>) {
+ throw FormatException('Invalid order format', orderJson);
+ }
return Order.fromJson(json['order']);
} else if (json.containsKey('payment_request')) {
+ final prJson = json['payment_request'];
+ if (prJson is! Map<String, dynamic>) {
+ throw FormatException('Invalid payment_request format', prJson);
+ }
return PaymentRequest.fromJson(json['payment_request']);
}
- throw UnsupportedError('Unknown content type');
+ throw FormatException(
+ 'Unknown content type. Expected "order" or "payment_request"',
+ json
+ );
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| factory Content.fromJson(Map<String, dynamic> json) { | |
| if (json.containsKey('order')) { | |
| return Order.fromJson(json['order']); | |
| } else if (json.containsKey('payment_request')) { | |
| return PaymentRequest.fromJson(json['payment_request']); | |
| } | |
| throw UnsupportedError('Unknown content type'); | |
| } | |
| } | |
| factory Content.fromJson(Map<String, dynamic> json) { | |
| if (json == null) { | |
| throw ArgumentError.notNull('json'); | |
| } | |
| if (json.containsKey('order')) { | |
| final orderJson = json['order']; | |
| if (orderJson is! Map<String, dynamic>) { | |
| throw FormatException('Invalid order format', orderJson); | |
| } | |
| return Order.fromJson(json['order']); | |
| } else if (json.containsKey('payment_request')) { | |
| final prJson = json['payment_request']; | |
| if (prJson is! Map<String, dynamic>) { | |
| throw FormatException('Invalid payment_request format', prJson); | |
| } | |
| return PaymentRequest.fromJson(json['payment_request']); | |
| } | |
| throw FormatException( | |
| 'Unknown content type. Expected "order" or "payment_request"', | |
| json | |
| ); | |
| } |
| static Future<bool> verifyPin(String inputPin) async { | ||
| final storedPin = await _storage.read(key: 'user_pin'); | ||
| return storedPin == inputPin; | ||
| throw UnimplementedError('verifyPin is not implemented yet'); |
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🛠️ Refactor suggestion
Standardize error handling approach
The error messages are inconsistent with the alpha preview nature of the app. Consider using a custom exception type that clearly indicates the preview status.
Create and use a custom exception:
+ /// Exception thrown when attempting to use unimplemented preview features
+ class PreviewFeatureException implements Exception {
+ final String feature;
+ PreviewFeatureException(this.feature);
+
+ @override
+ String toString() =>
+ 'Feature "$feature" is not implemented in this preview version';
+ }
static Future<bool> verifyPin(String inputPin) async {
- throw UnimplementedError('verifyPin is not implemented yet');
+ throw PreviewFeatureException('PIN verification');
}Also applies to: 13-14, 19-20
lib/core/utils/auth_utils.dart
Outdated
| static Future<void> savePrivateKeyAndPin( | ||
| String privateKey, String pin) async {} | ||
|
|
||
| static Future<String?> getPrivateKey() async { | ||
| return await _storage.read(key: 'user_private_key'); | ||
| return null; |
There was a problem hiding this comment.
Document the temporary nature of these implementations
The empty implementation of savePrivateKeyAndPin and the null-returning getPrivateKey need documentation to explain their temporary state and security implications.
Add documentation like this:
+ /// Temporary implementation for alpha preview.
+ /// WARNING: This is not secure and should not be used in production.
+ /// TODO: Implement secure storage for credentials
static Future<void> savePrivateKeyAndPin(
String privateKey, String pin) async {}
+ /// Temporary implementation for alpha preview.
+ /// WARNING: This always returns null and should not be used in production.
+ /// TODO: Implement secure key retrieval
static Future<String?> getPrivateKey() async {
return null;
}📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| static Future<void> savePrivateKeyAndPin( | |
| String privateKey, String pin) async {} | |
| static Future<String?> getPrivateKey() async { | |
| return await _storage.read(key: 'user_private_key'); | |
| return null; | |
| /// Temporary implementation for alpha preview. | |
| /// WARNING: This is not secure and should not be used in production. | |
| /// TODO: Implement secure storage for credentials | |
| static Future<void> savePrivateKeyAndPin( | |
| String privateKey, String pin) async {} | |
| /// Temporary implementation for alpha preview. | |
| /// WARNING: This always returns null and should not be used in production. | |
| /// TODO: Implement secure key retrieval | |
| static Future<String?> getPrivateKey() async { | |
| return null; |
| @override | ||
| Map<String, dynamic> toJson() { | ||
| return { | ||
| type: { | ||
| 'pubkey': publicKey, | ||
| } | ||
| }; | ||
| } |
There was a problem hiding this comment.
Review JSON serialization structure.
The current serialization format seems problematic:
- Using
typeas a dynamic key creates nested structure - Serialization format doesn't match deserialization expectations
Consider this flatter structure:
@override
Map<String, dynamic> toJson() {
return {
- type: {
- 'pubkey': publicKey,
- }
+ 'type': type,
+ 'pubkey': publicKey,
};
}📝 Committable suggestion
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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| @override | |
| Map<String, dynamic> toJson() { | |
| return { | |
| type: { | |
| 'pubkey': publicKey, | |
| } | |
| }; | |
| } | |
| @override | |
| Map<String, dynamic> toJson() { | |
| return { | |
| 'type': type, | |
| 'pubkey': publicKey, | |
| }; | |
| } |
| factory Peer.fromJson(Map<String, dynamic> json) { | ||
| final pubkey = json['pubkey']; | ||
| if (pubkey == null || pubkey is! String) { | ||
| throw FormatException('Invalid or missing pubkey in JSON'); | ||
| } | ||
| return Peer( | ||
| publicKey: pubkey, | ||
| ); | ||
| } |
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Add validation for Nostr public key format.
While the basic type checking is good, Nostr public keys have specific format requirements that should be validated.
Add format validation:
factory Peer.fromJson(Map<String, dynamic> json) {
final pubkey = json['pubkey'];
if (pubkey == null || pubkey is! String) {
throw FormatException('Invalid or missing pubkey in JSON');
}
+ if (!RegExp(r'^[0-9a-f]{64}$').hasMatch(pubkey)) {
+ throw FormatException('Invalid Nostr public key format - must be 64 hex characters');
+ }
return Peer(
publicKey: pubkey,
);
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| factory Peer.fromJson(Map<String, dynamic> json) { | |
| final pubkey = json['pubkey']; | |
| if (pubkey == null || pubkey is! String) { | |
| throw FormatException('Invalid or missing pubkey in JSON'); | |
| } | |
| return Peer( | |
| publicKey: pubkey, | |
| ); | |
| } | |
| factory Peer.fromJson(Map<String, dynamic> json) { | |
| final pubkey = json['pubkey']; | |
| if (pubkey == null || pubkey is! String) { | |
| throw FormatException('Invalid or missing pubkey in JSON'); | |
| } | |
| if (!RegExp(r'^[0-9a-f]{64}$').hasMatch(pubkey)) { | |
| throw FormatException('Invalid Nostr public key format - must be 64 hex characters'); | |
| } | |
| return Peer( | |
| publicKey: pubkey, | |
| ); | |
| } |
| Future<Session> newSession() async { | ||
| final keys = NostrUtils.generateKeyPair(); | ||
| final session = Session( | ||
| sessionId: keys.public, | ||
| startTime: DateTime.now(), | ||
| keyPair: keys, | ||
| ); | ||
| await saveSession(session); | ||
| return session; | ||
| } |
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Critical Security Issue: Storing Private Keys in Insecure Storage
The newSession method generates a key pair and stores it within the Session object, which is then saved using SharedPreferences. Since SharedPreferences stores data in plain text, sensitive information like private keys is exposed, posing a significant security risk.
Recommendation:
Use a secure storage solution that provides encryption, such as the flutter_secure_storage package, to safely store sensitive data like private keys.
| Future<void> saveSession(Session session) async { | ||
| final prefs = await SharedPreferences.getInstance(); | ||
| String sessionJson = jsonEncode(session.toJson()); | ||
| await prefs.setString(session.sessionId, sessionJson); | ||
| } |
There was a problem hiding this comment.
Sensitive Data Saved Without Encryption
In the saveSession method, the entire Session object—including the private key—is serialized to JSON and saved in SharedPreferences. This continues the issue of storing sensitive data without proper encryption.
Recommendation:
Modify the saveSession method to store sensitive information in a secure manner. When using flutter_secure_storage, you can securely save key-value pairs, ensuring that private keys remain encrypted on the device.
| try { | ||
| final prefs = await SharedPreferences.getInstance(); | ||
| final now = DateTime.now(); | ||
| final allKeys = prefs.getKeys(); | ||
| int processedCount = 0; | ||
|
|
||
| for (var key in allKeys) { | ||
| if (processedCount >= maxBatchSize) { | ||
| // Schedule remaining cleanup for next run | ||
| break; | ||
| } | ||
| final sessionJson = prefs.getString(key); | ||
| if (sessionJson != null) { | ||
| try { | ||
| final session = Session.fromJson(jsonDecode(sessionJson)); | ||
| if (now.difference(session.startTime).inHours >= sessionExpirationHours) { | ||
| await prefs.remove(key); | ||
| processedCount++; | ||
| } | ||
| } catch (e) { | ||
| print('Error processing session $key: $e'); | ||
| await prefs.remove(key); | ||
| processedCount++; | ||
| } | ||
| } | ||
| } | ||
| } catch (e) { | ||
| print('Error during session cleanup: $e'); | ||
| } |
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🛠️ Refactor suggestion
Improve Error Handling and Logging Mechanism
Using print statements for error logging is not suitable for production environments as it doesn't provide log levels or the ability to manage outputs effectively.
Recommendation:
-
Use a Logging Package:
Consider using a logging package like
loggerto handle logging with different severity levels.// At the top of your file import 'package:logger/logger.dart'; // Initialize a logger instance final logger = Logger();
Replace
printstatements with appropriate log methods:- print('Error processing session $key: $e'); + logger.e('Error processing session $key', e);
-
Catch Specific Exceptions:
Instead of catching all exceptions, catch specific ones like
FormatExceptionorExceptionto handle known error cases more precisely.try { // ... } on FormatException catch (e) { logger.e('Invalid session format for $key', e); await prefs.remove(key); processedCount++; } catch (e) { logger.e('Unexpected error processing session $key', e); // Handle or rethrow unexpected exceptions }
| value: false, | ||
| onChanged: (value) { | ||
| // Update the state in the bloc | ||
| // Update the state in the bloc if necessary |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Connect the Switch to a state variable to make it functional
The Switch widget currently has a hardcoded value of false and an empty onChanged callback, which means it doesn't respond to user interaction. To make the Switch functional, connect it to a state variable using a StateProvider from Riverpod.
Here's how you can update the code:
-
Declare a
StateProviderfor the toggle state:final isFixedProvider = StateProvider<bool>((ref) => false);
-
Modify the
_buildFixedTogglemethod to includeWidgetRef refand use the provider:- Widget _buildFixedToggle() { + Widget _buildFixedToggle(WidgetRef ref) { return Row( children: [ const Text('Fixed', style: TextStyle(color: AppTheme.cream1)), const SizedBox(width: 8), Switch( - value: false, + value: ref.watch(isFixedProvider), onChanged: (value) { - // Update the state in the bloc if necessary + ref.read(isFixedProvider.notifier).state = value; }, ), ], ); }
-
Update calls to
_buildFixedTogglein_buildSellFormand_buildBuyForm:- _buildFixedToggle(), + _buildFixedToggle(ref),
| void _submitOrder(BuildContext context, WidgetRef ref, OrderType orderType) { | ||
| final selectedFiatCode = ref.read(selectedFiatCodeProvider); | ||
|
|
||
| if (_formKey.currentState?.validate() ?? false) { | ||
| context.read<AddOrderBloc>().add(SubmitOrder( | ||
| fiatCode: selectedFiatCode ?? '', // Use selected fiat code | ||
| fiatAmount: int.tryParse(_fiatAmountController.text) ?? 0, | ||
| satsAmount: int.tryParse(_satsAmountController.text) ?? 0, | ||
| paymentMethod: _paymentMethodController.text, | ||
| orderType: orderType, | ||
| )); | ||
| } | ||
| } |
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Validate selectedFiatCode before submitting the order
If selectedFiatCode is null, an empty string is used for fiatCode, which might cause issues when processing the order. Ensure that a fiat code is selected before submitting and provide user feedback if it is not.
Update the _submitOrder method to check for a selected fiat code:
void _submitOrder(BuildContext context, WidgetRef ref, OrderType orderType) {
final selectedFiatCode = ref.read(selectedFiatCodeProvider);
+ if (selectedFiatCode == null || selectedFiatCode.isEmpty) {
+ ScaffoldMessenger.of(context).showSnackBar(
+ const SnackBar(content: Text('Please select a fiat code')),
+ );
+ return;
+ }
context.read<AddOrderBloc>().add(SubmitOrder(
fiatCode: selectedFiatCode, // Use selected fiat code
fiatAmount: int.tryParse(_fiatAmountController.text) ?? 0,
satsAmount: int.tryParse(_satsAmountController.text) ?? 0,
paymentMethod: _paymentMethodController.text,
orderType: orderType,
));
}Committable suggestion skipped: line range outside the PR's diff.
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Actionable comments posted: 8
🧹 Outside diff range and nitpick comments (5)
lib/data/models/payment_request.dart (1)
9-18: Enhance constructor validation.While the basic validation is good, consider adding more specific validation:
- Validate BOLT-11 format for
lnInvoicewhen provided- Ensure
amountis positive when providedPaymentRequest({ this.order, this.lnInvoice, this.amount, }) { if (order == null && lnInvoice == null && amount == null) { throw ArgumentError('At least one parameter must be provided'); } + if (lnInvoice != null && !lnInvoice!.toLowerCase().startsWith('ln')) { + throw ArgumentError('Invalid Lightning Network invoice format'); + } + if (amount != null && amount! <= 0) { + throw ArgumentError('Amount must be positive'); + } }lib/data/models/nostr_event.dart (1)
43-52: Improve error handling in _timeAgo methodThe current implementation returns "invalid date" for both null and invalid timestamps. Consider:
- Using an enum or constant for the error message
- Logging invalid timestamps for debugging
+ static const String INVALID_DATE = "invalid date"; + String _timeAgo(String? ts) { - if (ts == null) return "invalid date"; + if (ts == null) return INVALID_DATE; final timestamp = int.tryParse(ts); if (timestamp != null && timestamp > 0) { final DateTime eventTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000) .subtract(Duration(hours: 36)); return timeago.format(eventTime, allowFromNow: true); } else { - return "invalid date"; + print('Invalid timestamp format: $ts'); + return INVALID_DATE; } }lib/presentation/order/bloc/order_details_bloc.dart (1)
1-58: Consider adding security measures for financial transactions.Given that this code handles financial transactions, even in an alpha preview, consider implementing these security measures:
- Add logging for all critical operations
- Implement rate limiting for order operations
- Add transaction amount validation
- Consider implementing a rollback mechanism for failed transactions
- Add audit trail for all order state changes
Would you like me to provide specific implementation suggestions for any of these security measures?
lib/data/models/rating.dart (2)
3-15: Add documentation comments for better code clarity.The class structure looks good with proper immutable fields and a well-defined constructor. Consider adding documentation comments to describe the purpose of the class and its fields.
+/// Represents a rating entity with review statistics. class Rating { + /// The total number of reviews received final int totalReviews; + /// The average rating score final double totalRating; + /// The most recent rating received final int lastRating; + /// The maximum possible rating value final int maxRate; + /// The minimum possible rating value final int minRate;
17-49: Consider enhancing error handling and using constants.The deserialization logic is robust, but there are opportunities for improvement:
class Rating { + static const String _NONE_VALUE = 'none'; + static const String _RATING_KEY = 'rating'; + + /// Default rating instance for 'none' cases + static final Rating none = Rating( + totalReviews: 0, + totalRating: 0.0, + lastRating: 0, + maxRate: 0, + minRate: 0, + ); factory Rating.deserialized(String data) { if (data.isEmpty) { throw FormatException('Empty data string provided'); } - if (data == 'none') { - return Rating( - totalReviews: 0, - totalRating: 0.0, - lastRating: 0, - maxRate: 0, - minRate: 0); + if (data == _NONE_VALUE) { + return none; } try { final json = jsonDecode(data) as Map<String, dynamic>; - final rating = json['rating'] as Map<String, dynamic>?; + final rating = json[_RATING_KEY] as Map<String, dynamic>?; if (rating == null) { - throw FormatException('Missing rating object in JSON'); + throw FormatException('Missing $_RATING_KEY object in JSON'); }
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (6)
lib/data/models/mostro_message.dart(1 hunks)lib/data/models/nostr_event.dart(1 hunks)lib/data/models/payment_request.dart(1 hunks)lib/data/models/rating.dart(1 hunks)lib/presentation/order/bloc/order_details_bloc.dart(1 hunks)lib/presentation/widgets/currency_dropdown.dart(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- lib/data/models/mostro_message.dart
- lib/presentation/widgets/currency_dropdown.dart
🔇 Additional comments (4)
lib/data/models/payment_request.dart (2)
20-35: Previous review comment about JSON serialization null handling is still applicable.
The implementation needs improvement in handling null values during serialization.
51-52: LGTM!
The type getter implementation is correct and follows the Content interface contract.
lib/data/models/nostr_event.dart (1)
1-8: LGTM! Clean imports and clear extension declaration.
The imports are appropriate and the extension is well-structured to enhance NostrEvent with tag-specific getters.
lib/data/models/rating.dart (1)
1-73: Add unit tests for the Rating class.
Given that this class handles critical rating data and this is an alpha preview, comprehensive unit tests should be added to verify:
- Deserialization of valid JSON data
- Handling of edge cases ('none', empty string)
- Error cases (invalid JSON, missing fields, wrong types)
Would you like me to help generate a test suite for this class?
| class PaymentRequest implements Content { | ||
| final Order? order; | ||
| final String? lnInvoice; | ||
| final int? amount; | ||
|
|
There was a problem hiding this comment.
🛠️ Refactor suggestion
Enhance security for sensitive payment data.
Consider adding the @sensitive annotation to prevent accidental logging of payment-related fields, particularly lnInvoice.
+import 'package:meta/meta.dart';
class PaymentRequest implements Content {
final Order? order;
+ @sensitive
final String? lnInvoice;
final int? amount;📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| class PaymentRequest implements Content { | |
| final Order? order; | |
| final String? lnInvoice; | |
| final int? amount; | |
| import 'package:meta/meta.dart'; | |
| class PaymentRequest implements Content { | |
| final Order? order; | |
| @sensitive | |
| final String? lnInvoice; | |
| final int? amount; | |
lib/data/models/payment_request.dart
Outdated
| factory PaymentRequest.fromJson(List<dynamic> json) { | ||
| if (json.length < 2) { | ||
| throw FormatException('Invalid JSON format: insufficient elements'); | ||
| } | ||
| final orderJson = json[0]; | ||
| final Order? order = orderJson != null ? Order.fromJson(orderJson) : null; | ||
| final amount = json.length > 2 ? json[2] as int? : null; | ||
| return PaymentRequest( | ||
| order: order, | ||
| lnInvoice: json[1], | ||
| amount: amount, | ||
| ); | ||
| } |
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🛠️ Refactor suggestion
Add type validation in fromJson factory.
Consider adding type validation for the lnInvoice field to ensure type safety:
factory PaymentRequest.fromJson(List<dynamic> json) {
if (json.length < 2) {
throw FormatException('Invalid JSON format: insufficient elements');
}
final orderJson = json[0];
final Order? order = orderJson != null ? Order.fromJson(orderJson) : null;
+ final lnInvoice = json[1];
+ if (lnInvoice != null && lnInvoice is! String) {
+ throw FormatException('Invalid type for lnInvoice: expected String');
+ }
final amount = json.length > 2 ? json[2] as int? : null;
return PaymentRequest(
order: order,
- lnInvoice: json[1],
+ lnInvoice: lnInvoice as String?,
amount: amount,
);
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| factory PaymentRequest.fromJson(List<dynamic> json) { | |
| if (json.length < 2) { | |
| throw FormatException('Invalid JSON format: insufficient elements'); | |
| } | |
| final orderJson = json[0]; | |
| final Order? order = orderJson != null ? Order.fromJson(orderJson) : null; | |
| final amount = json.length > 2 ? json[2] as int? : null; | |
| return PaymentRequest( | |
| order: order, | |
| lnInvoice: json[1], | |
| amount: amount, | |
| ); | |
| } | |
| factory PaymentRequest.fromJson(List<dynamic> json) { | |
| if (json.length < 2) { | |
| throw FormatException('Invalid JSON format: insufficient elements'); | |
| } | |
| final orderJson = json[0]; | |
| final Order? order = orderJson != null ? Order.fromJson(orderJson) : null; | |
| final lnInvoice = json[1]; | |
| if (lnInvoice != null && lnInvoice is! String) { | |
| throw FormatException('Invalid type for lnInvoice: expected String'); | |
| } | |
| final amount = json.length > 2 ? json[2] as int? : null; | |
| return PaymentRequest( | |
| order: order, | |
| lnInvoice: lnInvoice as String?, | |
| amount: amount, | |
| ); | |
| } |
| Rating? get rating => _getTagValue('rating') != null | ||
| ? Rating.deserialized(_getTagValue('rating')!) | ||
| : null; |
There was a problem hiding this comment.
Add error handling for Rating deserialization
Similar to the document getter, the rating getter should handle deserialization errors to prevent runtime crashes.
- Rating? get rating => _getTagValue('rating') != null
- ? Rating.deserialized(_getTagValue('rating')!)
- : null;
+ Rating? get rating {
+ final value = _getTagValue('rating');
+ if (value == null) return null;
+ try {
+ return Rating.deserialized(value);
+ } catch (e) {
+ print('Error deserializing rating: $e');
+ return null;
+ }
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| Rating? get rating => _getTagValue('rating') != null | |
| ? Rating.deserialized(_getTagValue('rating')!) | |
| : null; | |
| Rating? get rating { | |
| final value = _getTagValue('rating'); | |
| if (value == null) return null; | |
| try { | |
| return Rating.deserialized(value); | |
| } catch (e) { | |
| print('Error deserializing rating: $e'); | |
| return null; | |
| } | |
| } |
| String? get orderId => _getTagValue('d'); | ||
| String? get orderType => _getTagValue('k'); | ||
| OrderType? get orderType => _getTagValue('k') != null ? OrderType.fromString(_getTagValue('k')!) : null; | ||
| String? get currency => _getTagValue('f'); | ||
| String? get status => _getTagValue('s'); | ||
| String? get amount => _getTagValue('amt'); | ||
| String? get fiatAmount => _getTagValue('fa'); | ||
| List<String> get paymentMethods => _getTagValue('pm')?.split(',') ?? []; |
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🛠️ Refactor suggestion
Add validation for payment methods parsing
The current implementation assumes a valid comma-separated string format. Consider adding validation to handle malformed input.
- List<String> get paymentMethods => _getTagValue('pm')?.split(',') ?? [];
+ List<String> get paymentMethods {
+ final value = _getTagValue('pm');
+ if (value == null || value.isEmpty) return [];
+ return value.split(',').where((method) => method.isNotEmpty).toList();
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| List<String> get paymentMethods => _getTagValue('pm')?.split(',') ?? []; | |
| List<String> get paymentMethods { | |
| final value = _getTagValue('pm'); | |
| if (value == null || value.isEmpty) return []; | |
| return value.split(',').where((method) => method.isNotEmpty).toList(); | |
| } |
| emit(state.copyWith(status: OrderDetailsStatus.cancelled)); | ||
| } |
There was a problem hiding this comment.
Implement actual order cancellation.
The handler only updates the local state without communicating with the backend service. This could lead to inconsistency between the app and server states.
Consider implementing the actual cancellation:
void _onCancelOrder(CancelOrder event, Emitter<OrderDetailsState> emit) async {
+ emit(state.copyWith(status: OrderDetailsStatus.loading));
+ try {
+ await mostroService.cancelOrder(event.order.orderId!);
emit(state.copyWith(status: OrderDetailsStatus.cancelled));
+ } catch (e) {
+ emit(state.copyWith(
+ status: OrderDetailsStatus.error,
+ errorMessage: 'Failed to cancel order: $e'
+ ));
+ }
}Committable suggestion skipped: line range outside the PR's diff.
| void _onOrderUpdateReceived( | ||
| OrderUpdateReceived event, Emitter<OrderDetailsState> emit) { | ||
| switch (event.order.action) { | ||
| case Action.addInvoice: | ||
| case Action.payInvoice: | ||
| case Action.waitingSellerToPay: | ||
| emit(state.copyWith(status: OrderDetailsStatus.done)); | ||
| break; | ||
| case Action.notAllowedByStatus: | ||
| emit(state.copyWith( | ||
| status: OrderDetailsStatus.error, errorMessage: "Not allowed by status")); | ||
| break; | ||
| default: | ||
| break; | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Improve order update handling robustness.
The current implementation has several areas for improvement:
- No validation of incoming order data
- Silent handling of unknown actions
- Multiple actions leading to the same state could be grouped
Consider this improved implementation:
void _onOrderUpdateReceived(
OrderUpdateReceived event, Emitter<OrderDetailsState> emit) {
+ if (event.order == null) {
+ emit(state.copyWith(
+ status: OrderDetailsStatus.error,
+ errorMessage: "Invalid order update received"
+ ));
+ return;
+ }
switch (event.order.action) {
- case Action.addInvoice:
- case Action.payInvoice:
- case Action.waitingSellerToPay:
+ case Action.addInvoice ||
+ Action.payInvoice ||
+ Action.waitingSellerToPay:
emit(state.copyWith(status: OrderDetailsStatus.done));
break;
case Action.notAllowedByStatus:
emit(state.copyWith(
status: OrderDetailsStatus.error,
errorMessage: "Not allowed by status"));
break;
default:
+ emit(state.copyWith(
+ status: OrderDetailsStatus.error,
+ errorMessage: "Unexpected order action: ${event.order.action}"
+ ));
break;
}
}Committable suggestion skipped: line range outside the PR's diff.
| void _onContinueOrder( | ||
| ContinueOrder event, Emitter<OrderDetailsState> emit) async { | ||
| emit(state.copyWith(status: OrderDetailsStatus.loading)); | ||
|
|
||
| late MostroMessage order; | ||
|
|
||
| if (event.order.orderType == OrderType.buy) { | ||
| order = await mostroService.takeBuyOrder(event.order.orderId!); | ||
| } else { | ||
| order = await mostroService.takeSellOrder(event.order.orderId!); | ||
| } | ||
|
|
||
| add(OrderUpdateReceived(order)); |
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Add timeout handling for order operations.
Financial transactions should have appropriate timeouts to prevent indefinite waiting and handle network issues gracefully.
Add timeout handling:
void _onContinueOrder(
ContinueOrder event, Emitter<OrderDetailsState> emit) async {
emit(state.copyWith(status: OrderDetailsStatus.loading));
late MostroMessage order;
+ const timeout = Duration(seconds: 30);
try {
if (event.order.orderType == OrderType.buy) {
- order = await mostroService.takeBuyOrder(event.order.orderId!);
+ order = await mostroService.takeBuyOrder(event.order.orderId!)
+ .timeout(timeout, onTimeout: () {
+ throw TimeoutException('Order processing timed out');
+ });
} else {
- order = await mostroService.takeSellOrder(event.order.orderId!);
+ order = await mostroService.takeSellOrder(event.order.orderId!)
+ .timeout(timeout, onTimeout: () {
+ throw TimeoutException('Order processing timed out');
+ });
}
add(OrderUpdateReceived(order));
+ } catch (e) {
+ emit(state.copyWith(
+ status: OrderDetailsStatus.error,
+ errorMessage: 'Failed to process order: $e'
+ ));
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| void _onContinueOrder( | |
| ContinueOrder event, Emitter<OrderDetailsState> emit) async { | |
| emit(state.copyWith(status: OrderDetailsStatus.loading)); | |
| late MostroMessage order; | |
| if (event.order.orderType == OrderType.buy) { | |
| order = await mostroService.takeBuyOrder(event.order.orderId!); | |
| } else { | |
| order = await mostroService.takeSellOrder(event.order.orderId!); | |
| } | |
| add(OrderUpdateReceived(order)); | |
| void _onContinueOrder( | |
| ContinueOrder event, Emitter<OrderDetailsState> emit) async { | |
| emit(state.copyWith(status: OrderDetailsStatus.loading)); | |
| late MostroMessage order; | |
| const timeout = Duration(seconds: 30); | |
| try { | |
| if (event.order.orderType == OrderType.buy) { | |
| order = await mostroService.takeBuyOrder(event.order.orderId!) | |
| .timeout(timeout, onTimeout: () { | |
| throw TimeoutException('Order processing timed out'); | |
| }); | |
| } else { | |
| order = await mostroService.takeSellOrder(event.order.orderId!) | |
| .timeout(timeout, onTimeout: () { | |
| throw TimeoutException('Order processing timed out'); | |
| }); | |
| } | |
| add(OrderUpdateReceived(order)); | |
| } catch (e) { | |
| emit(state.copyWith( | |
| status: OrderDetailsStatus.error, | |
| errorMessage: 'Failed to process order: $e' | |
| )); | |
| } | |
| } |
lib/data/models/rating.dart
Outdated
| static int _parseIntField(Map<String, dynamic> json, String field) { | ||
| final value = json[field]; | ||
| if (value == null) { | ||
| throw FormatException('Missing required field: $field'); | ||
| } | ||
| if (value is! num) { | ||
| throw FormatException( | ||
| 'Invalid type for $field: expected number, got ${value.runtimeType}'); | ||
| } | ||
| return value.toInt(); | ||
| } | ||
|
|
||
| static double _parseDoubleField(Map<String, dynamic> json, String field) { | ||
| final value = json[field]; | ||
| if (value == null) { | ||
| throw FormatException('Missing required field: $field'); | ||
| } | ||
| if (value is! num) { | ||
| throw FormatException( | ||
| 'Invalid type for $field: expected number, got ${value.runtimeType}'); | ||
| } | ||
| return value.toDouble(); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Optimize parsing methods to reduce code duplication.
The parsing methods share similar structure and could be refactored to reduce duplication.
+ static T _parseNumericField<T extends num>(
+ Map<String, dynamic> json,
+ String field,
+ T Function(num) converter,
+ ) {
+ final value = json[field];
+ if (value == null) {
+ throw FormatException('Missing required field: $field');
+ }
+ if (value is! num) {
+ throw FormatException(
+ 'Invalid type for $field: expected number, got ${value.runtimeType}');
+ }
+ return converter(value);
+ }
+
static int _parseIntField(Map<String, dynamic> json, String field) {
- final value = json[field];
- if (value == null) {
- throw FormatException('Missing required field: $field');
- }
- if (value is! num) {
- throw FormatException(
- 'Invalid type for $field: expected number, got ${value.runtimeType}');
- }
- return value.toInt();
+ return _parseNumericField(json, field, (num v) => v.toInt());
}
static double _parseDoubleField(Map<String, dynamic> json, String field) {
- final value = json[field];
- if (value == null) {
- throw FormatException('Missing required field: $field');
- }
- if (value is! num) {
- throw FormatException(
- 'Invalid type for $field: expected number, got ${value.runtimeType}');
- }
- return value.toDouble();
+ return _parseNumericField(json, field, (num v) => v.toDouble());
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| static int _parseIntField(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value == null) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| if (value is! num) { | |
| throw FormatException( | |
| 'Invalid type for $field: expected number, got ${value.runtimeType}'); | |
| } | |
| return value.toInt(); | |
| } | |
| static double _parseDoubleField(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value == null) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| if (value is! num) { | |
| throw FormatException( | |
| 'Invalid type for $field: expected number, got ${value.runtimeType}'); | |
| } | |
| return value.toDouble(); | |
| } | |
| static T _parseNumericField<T extends num>( | |
| Map<String, dynamic> json, | |
| String field, | |
| T Function(num) converter, | |
| ) { | |
| final value = json[field]; | |
| if (value == null) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| if (value is! num) { | |
| throw FormatException( | |
| 'Invalid type for $field: expected number, got ${value.runtimeType}'); | |
| } | |
| return converter(value); | |
| } | |
| static int _parseIntField(Map<String, dynamic> json, String field) { | |
| return _parseNumericField(json, field, (num v) => v.toInt()); | |
| } | |
| static double _parseDoubleField(Map<String, dynamic> json, String field) { | |
| return _parseNumericField(json, field, (num v) => v.toDouble()); | |
| } |
There was a problem hiding this comment.
Hi @chebizarro great job! congratulations.
There are some things that can be improved when displaying orders such as:
-
Orders that have ranges are not being displayed correctly, it only shows the lower value. For example: purchase order of 210-600 cup, it only shows one order for 210 cup
-
If the maker of the order has
"rating", "none"the client displays the order, but if the maker was previously rated, this appears in the logsAnother exception was thrown: FormatException: Missing rating object in JSONand the client shows a red error. Also, it does not show any order that has been published after that one
There was a problem hiding this comment.
I think that when someone presses an order to see its details, if they don't want to take it, and they press Cancel, there is no need to display the message that you have cancelled the order, because in reality the user didn't cancel it, they just didn't take it.
I think that automatically returning the user to the main screen would be fine, without them having to press another button to do so.
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In the purchase orders, it says: offering X sats for Y fiat but it seems incorrect to me that way, since the buyer offers the fiat, not the btc.
I think it should swap the order in which they appear and put offering Y fiat for X sats, and if it is a market price order perhaps it should say offering Y fiat for sats without the value.
Another way to put it would be (using the fiat USD example):
For purchase orders:
- Market price orders:
Buying Sats for X USD - Fixed orders:
Buying Y sats for X USD
For sales orders:
- Market price orders:
Selling sats for X USD - Fixed orders:
Selling Y sats for X USD
What do you think @chebizarro ?
|
@chebizarro This might be useful for UI #26 |
Hi @chebizarro Sorry for so many messages 😅 I can't get it to take an order. When I press Continue to take an order, the order remains in pending status. It seems that Mostro is not receiving the message from takesell or takebuy. |
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Actionable comments posted: 18
🧹 Outside diff range and nitpick comments (15)
lib/data/models/amount.dart (2)
7-25: Add documentation and improve validation in fromList constructorThe constructor handles basic validation well, but could benefit from the following improvements:
- Add documentation explaining the expected list format
- Add validation for negative values if they're not allowed
- Consider utilizing or documenting the purpose of the first element (label)
+ /// Creates an Amount from a list of strings where: + /// - First element is a label (currently unused) + /// - Second element is the minimum value (required) + /// - Third element is the maximum value (optional) + /// + /// Example: ["USD", "100", "500"] creates Amount(100, 500) factory Amount.fromList(List<String> fa) { if (fa.length < 2) { throw ArgumentError( 'List must have at least two elements: a label and a minimum value.'); } final min = int.tryParse(fa[1]); if (min == null) { throw ArgumentError( 'Second element must be a valid integer representing the minimum value.'); } + if (min < 0) { + throw ArgumentError('Minimum value cannot be negative'); + } int? max; if (fa.length > 2) { max = int.tryParse(fa[2]); + if (max != null && max < 0) { + throw ArgumentError('Maximum value cannot be negative'); + } } return Amount(min, max); }
27-29: Add documentation for empty constructorThe empty constructor's implementation is clear, but would benefit from documentation explaining its purpose and use cases.
+ /// Creates an empty Amount with minimum value of 0 and no maximum limit. + /// Useful as a default value or for initialization purposes. factory Amount.empty() { return Amount(0, null); }lib/core/utils/auth_utils.dart (1)
22-29: Consider tracking biometric authentication plansWhile the unimplemented state is appropriate for the alpha preview, consider creating tracking issues for the future implementation of biometric authentication features.
Would you like me to create GitHub issues to track the implementation of these biometric features?
lib/data/models/rating.dart (1)
3-16: Add documentation for the Rating class and its fields.Consider adding documentation comments to explain:
- The purpose of the Rating class
- The meaning and valid ranges for each field
- The relationship between maxRate and minRate
+/// Represents a rating entity with aggregated review statistics. class Rating { + /// The total number of reviews received final int totalReviews; + /// The average rating score across all reviews final double totalRating; + /// The most recent rating received final int lastRating; + /// The maximum allowed rating value final int maxRate; + /// The minimum allowed rating value final int minRate;lib/data/models/nostr_event.dart (2)
46-49: Fix spacing and add defensive programming in _getAmountThe implementation has a spacing issue and could be more defensive in its checks.
Amount _getAmount(String key) { final tag = tags?.firstWhere((t) => t[0] == key, orElse: () => []); - return (tag != null && tag.length> 1) ? Amount.fromList(tag) : Amount.empty(); + return (tag != null && tag.length > 1 && tag.every((e) => e != null)) + ? Amount.fromList(tag) + : Amount.empty(); }
51-62: Improve error handling in _timeAgo methodThe method could be more robust in handling edge cases and provide better error messages.
String _timeAgo(String? ts) { - if (ts == null) return "invalid date"; + if (ts == null || ts.isEmpty) return "date not available"; final timestamp = int.tryParse(ts); if (timestamp != null && timestamp > 0) { final DateTime eventTime = DateTime.fromMillisecondsSinceEpoch(timestamp * 1000) .subtract(Duration(hours: 36)); return timeago.format(eventTime, allowFromNow: true); } else { - return "invalid date"; + return "invalid timestamp format: $ts"; } }lib/presentation/widgets/order_filter.dart (2)
10-23: Consider making the width responsiveThe fixed width of 300 might not be optimal for all screen sizes. Consider using MediaQuery or LayoutBuilder for responsive sizing.
- width: 300, + width: MediaQuery.of(context).size.width * 0.8, + constraints: BoxConstraints(maxWidth: 300),
44-49: Consider adding onClose callbackThe close action might need to perform additional cleanup or state updates in the parent widget.
+ final VoidCallback? onClose; + const OrderFilter({ + super.key, + this.onClose, + // ... other parameters + }); IconButton( icon: Icon(Icons.close, color: AppTheme.dark2, size: 20), onPressed: () { + if (onClose != null) onClose!(); Navigator.of(context).pop(); }, ),lib/data/models/order.dart (2)
7-25: Add documentation and consider type improvementsThe class properties would benefit from documentation to explain their purpose and constraints. Additionally, consider type improvements:
- Add documentation for each property
- Use strong types for specialized fields:
- Public keys (masterBuyerPubkey, masterSellerPubkey)
- Timestamps (createdAt, expiresAt)
Example implementation:
/// Represents a public key in the system class PublicKey { final String value; const PublicKey(this.value); @override String toString() => value; } class Order implements Content { /// Unique identifier for the order final String? id; /// Type of order (buy/sell) final OrderType kind; /// Current status of the order final Status status; /// Amount in satoshis final int amount; // ... (document other fields similarly) /// Public key of the master buyer final PublicKey? masterBuyerPubkey; /// Public key of the master seller final PublicKey? masterSellerPubkey; /// Timestamp when the order was created final DateTime? createdAt; /// Timestamp when the order expires final DateTime? expiresAt;
46-76: Improve maintainability of toJson implementationConsider refactoring the toJson method to reduce repetition and improve maintainability.
Example implementation:
@override Map<String, dynamic> toJson() { final Map<String, dynamic> orderData = { 'kind': kind.value, 'status': status.value, 'amount': amount, 'fiat_code': fiatCode, 'fiat_amount': fiatAmount, 'payment_method': paymentMethod, 'premium': premium, }; // Helper to add non-null values void addIfNotNull(String key, dynamic value) { if (value != null) orderData[key] = value; } // Add optional fields addIfNotNull('id', id); addIfNotNull('min_amount', minAmount); addIfNotNull('max_amount', maxAmount); addIfNotNull('master_buyer_pubkey', masterBuyerPubkey); addIfNotNull('master_seller_pubkey', masterSellerPubkey); addIfNotNull('buyer_invoice', buyerInvoice); addIfNotNull('created_at', createdAt); addIfNotNull('expires_at', expiresAt); addIfNotNull('buyer_token', buyerToken); addIfNotNull('seller_token', sellerToken); return {type: orderData}; }lib/presentation/widgets/order_list_item.dart (2)
92-155: Consider breaking down the _getOrder method for better maintainabilityThe method is handling multiple responsibilities including order type determination, amount formatting, and complex widget construction. Consider:
- Extracting the widget tree into smaller, reusable components
- Moving the order type check into a separate method
- Converting amount comparison to numeric for better type safety
Example refactor for the amount check:
- (order.amount != null && order.amount != '0') ? ' ${order.amount!}' : '', + (order.amount != null && double.tryParse(order.amount!) != 0) ? ' ${order.amount!}' : '',
Line range hint
157-169: Consider using an enum or configuration map for payment methodsThe current switch statement for payment method icons could become difficult to maintain as more payment methods are added. Consider:
- Using an enum for payment methods
- Moving the mapping to a configuration file
Example approach:
enum PaymentMethod { wireTransfer, revolut, // Add more methods... } final paymentMethodIcons = { PaymentMethod.wireTransfer: HeroIcons.buildingLibrary, PaymentMethod.revolut: HeroIcons.creditCard, // Add more mappings... };lib/core/utils/nostr_utils.dart (2)
Line range hint
13-34: Enhance error messages with more specific details.The error handling is good, but the error messages could be more specific about what exactly failed.
static NostrKeyPairs generateKeyPair() { try { final privateKey = generatePrivateKey(); if (!isValidPrivateKey(privateKey)) { - throw Exception('Generated invalid private key'); + throw Exception('Generated private key failed validation: $privateKey'); } return NostrKeyPairs(private: privateKey); } catch (e) { - throw Exception('Failed to generate key pair: $e'); + throw Exception('Key pair generation failed - possible entropy issue: $e'); } } static String generatePrivateKey() { try { return getS256().generatePrivateKey().toHex(); } catch (e) { - throw Exception('Failed to generate private key: $e'); + throw Exception('Private key generation failed - possible curve error: $e'); } }
147-214: Consider adding cleanup and resource management.While the implementation is solid, there are a few areas for improvement:
- Memory management for encryption operations
- Cleanup of sensitive data
- More specific error types
static Future<NostrEvent> createNIP59Event( String content, String recipientPubKey, String senderPrivateKey) async { // Validate inputs if (content.isEmpty) throw ArgumentError('Content cannot be empty'); if (recipientPubKey.length != 64) { throw ArgumentError('Invalid recipient public key'); } if (!isValidPrivateKey(senderPrivateKey)) { throw ArgumentError('Invalid sender private key'); } + String? encryptedContent; + String? sealedContent; + NostrKeyPairs? wrapperKeyPair; + + try { final senderKeyPair = generateKeyPairFromPrivateKey(senderPrivateKey); final createdAt = DateTime.now(); // ... rest of the implementation ... + } finally { + // Clean up sensitive data + encryptedContent = null; + sealedContent = null; + wrapperKeyPair?.private = ''; + } }lib/presentation/order/screens/order_details_screen.dart (1)
204-205: Implement the review logicThe review functionality is currently incomplete.
Would you like me to help implement the review logic or create a GitHub issue to track this task?
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (10)
lib/core/utils/auth_utils.dart(1 hunks)lib/core/utils/nostr_utils.dart(3 hunks)lib/data/models/amount.dart(1 hunks)lib/data/models/nostr_event.dart(1 hunks)lib/data/models/order.dart(1 hunks)lib/data/models/payment_request.dart(1 hunks)lib/data/models/rating.dart(1 hunks)lib/presentation/order/screens/order_details_screen.dart(4 hunks)lib/presentation/widgets/order_filter.dart(1 hunks)lib/presentation/widgets/order_list_item.dart(5 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- lib/data/models/payment_request.dart
🔇 Additional comments (9)
lib/core/utils/auth_utils.dart (2)
2-12: Documentation and implementation align with alpha preview status
The clear documentation with warnings and TODOs appropriately reflects the temporary nature of these implementations for the alpha preview.
14-16: Appropriate error handling for unimplemented preview feature
The use of UnimplementedError is suitable here as it clearly indicates the feature's status in the alpha preview.
lib/data/models/rating.dart (1)
1-64: Verify Rating serialization/deserialization usage.
Let's verify how this class is being used across the codebase to ensure consistent serialization/deserialization patterns.
✅ Verification successful
Let me gather more context about the usage patterns, particularly in the order_model.dart file which seems to have a different parsing approach.
Based on the comprehensive analysis of the codebase, I can now provide the final response:
Rating class implementation and usage is consistent
The Rating class is properly implemented with clear serialization/deserialization patterns and is used consistently across the codebase:
- Used in
NostrEventmodel for rating tag deserialization - Separate from
OrderModel's rating handling, which uses a simpler rating structure for different purposes - Proper error handling and type checking in place
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for Rating class usage
echo "Searching for Rating class usage patterns..."
rg -A 3 "Rating\." --type dart
# Search for potential JSON structures containing rating fields
echo "Searching for JSON structures with rating fields..."
rg -B 2 -A 2 "(total_reviews|total_rating|last_rating|max_rate|min_rate)" --type dart
Length of output: 2046
Script:
#!/bin/bash
# Check the full implementation of OrderModel
echo "Checking OrderModel implementation..."
cat lib/data/models/order_model.dart
# Check for any other Rating instantiations
echo "Checking other Rating instantiations..."
ast-grep --pattern 'Rating('
# Check for any serialization methods that might use Rating
echo "Checking for serialization methods..."
rg -B 2 -A 5 "toJson|fromJson|serialize|deserialize" --type dart
Length of output: 22324
lib/data/models/nostr_event.dart (1)
1-9: LGTM: Imports and extension declaration are well-organized
The imports are properly organized and the extension is correctly declared.
lib/presentation/widgets/order_list_item.dart (2)
1-11: LGTM: Clean imports and proper class declaration
The imports are well-organized and the class declaration follows Flutter best practices with proper type safety.
44-46: Verify the expiration time format and display
The time display has been changed from timeAgo to expiration. Please ensure that:
- The expiration time is properly formatted for user readability
- Users can easily understand when orders will expire
✅ Verification successful
Let me analyze the time formatting implementation based on the search results. I'll generate another script to check the order model implementation.
Let me try a different pattern to locate the Order class implementation.
Based on the search results, I can now generate the final response since I have found the relevant implementation details. The code shows that the expiration time is properly handled through the NostrEvent model which formats the time using the timeago package, making it user-friendly.
Time display is properly implemented and user-friendly
The expiration time display is correctly implemented:
- It uses the timeago package to format timestamps into human-readable format (e.g., "2 hours from now")
- The expiration time is extracted from the NostrEvent's tags and properly formatted in
NostrEvent.expiration - The implementation includes validation to handle invalid dates gracefully
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for time/date formatting patterns across the codebase
rg -A 2 "expiration|timeAgo|format.*Time|DateTime" --type dart
Length of output: 13901
Script:
#!/bin/bash
# Check order model implementation for expiration handling
ast-grep --pattern 'class Order {
$$$
}'
Length of output: 44
Script:
#!/bin/bash
# Search for Order class and expiration handling
rg -A 10 "^class Order" --type dart
Length of output: 8531
lib/core/utils/nostr_utils.dart (2)
285-302: Past review comment is still applicable.
The previous review comment about adding input validation to NIP-44 encryption/decryption methods is still valid and should be implemented.
133-145: 🛠️ Refactor suggestion
Improve network time validation accuracy.
The current implementation uses local time for network time validation, which might not be accurate. Consider using an NTP server or a trusted time source.
static DateTime randomNow() {
final now = DateTime.now();
- // Validate system time isn't ahead
- final networkTime = DateTime.now().toUtc();
- if (now.isAfter(networkTime.add(Duration(minutes: 5)))) {
- throw Exception('System clock is ahead of network time');
+ // TODO: Implement proper NTP time check
+ // For now, we'll use a more lenient local time check
+ if (now.isAfter(DateTime.now().add(Duration(minutes: 1)))) {
+ throw Exception('System clock appears to be unstable');
}
final randomSeconds = Random().nextInt(2 * 24 * 60 * 60);
return now.subtract(Duration(seconds: randomSeconds));
}lib/presentation/order/screens/order_details_screen.dart (1)
17-22: LGTM: Clean transition to Riverpod integration
The migration from StatelessWidget to ConsumerWidget is well implemented, with proper initialization of required controllers and fields.
| class Amount { | ||
| final int minimum; | ||
| final int? maximum; | ||
|
|
||
| Amount(this.minimum, this.maximum); |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add validation to ensure maximum >= minimum when both are provided
The class structure looks good, but it should validate that the maximum value is greater than or equal to the minimum value when both are provided.
class Amount {
final int minimum;
final int? maximum;
- Amount(this.minimum, this.maximum);
+ Amount(this.minimum, this.maximum) {
+ if (maximum != null && maximum! < minimum) {
+ throw ArgumentError('Maximum value must be greater than or equal to minimum value');
+ }
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| class Amount { | |
| final int minimum; | |
| final int? maximum; | |
| Amount(this.minimum, this.maximum); | |
| class Amount { | |
| final int minimum; | |
| final int? maximum; | |
| Amount(this.minimum, this.maximum) { | |
| if (maximum != null && maximum! < minimum) { | |
| throw ArgumentError('Maximum value must be greater than or equal to minimum value'); | |
| } | |
| } |
| @override | ||
| String toString() { | ||
| if (maximum != null) { | ||
| return '$minimum - $maximum'; | ||
| } else { | ||
| return '$minimum'; | ||
| } | ||
| } |
There was a problem hiding this comment.
💡 Codebase verification
Add unit tests and consider integrating with existing currency formatting
The codebase has no tests for the Amount class's toString method, while having an existing CurrencyInputFormatter that handles decimal formatting. Consider:
- Adding unit tests to verify both formats:
test('toString returns single value when maximum is null', () { expect(Amount(1000, null).toString(), equals('1000')); }); test('toString returns range when maximum is present', () { expect(Amount(1000, 2000).toString(), equals('1000 - 2000')); });
- Leveraging the existing currency formatting infrastructure (CurrencyInputFormatter) to enhance the number presentation in toString()
🔗 Analysis chain
Consider adding tests and currency formatting support
The toString implementation looks good, but consider:
- Adding unit tests to verify both formats (with and without maximum)
- Supporting currency formatting in the future (e.g., thousands separators, decimal places)
Would you like me to help generate unit tests for this class?
The previous search was too specific. Let's broaden our search to:
- Find any test files that might contain Amount class tests
- Look for any existing currency formatting implementations to validate our suggestion
I want to verify:
- The existing currency formatting implementation to see if it can be reused
- If there are any Amount class tests that might be in files not matching our previous patterns
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Check if tests exist for this class
fd "amount_test.dart" | while read -r test_file; do
echo "Found test file: $test_file"
rg "toString" "$test_file"
done
Length of output: 41
Script:
#!/bin/bash
# Let's try a broader search for test files and Amount class tests
fd "test.*\.dart$" | while read -r test_file; do
echo "=== Checking $test_file ==="
rg -A 3 "Amount" "$test_file"
done
# Also check if there are any existing currency formatting implementations
rg -i "currency.*format|format.*currency"
Length of output: 1071
Script:
#!/bin/bash
# Let's check the currency formatting implementation details
cat lib/services/currency_input_formatter.dart
# Let's also check if there are any Amount class tests in the entire codebase
rg -B 2 -A 5 "class.*Amount|test.*Amount"
Length of output: 756
|
|
||
| static Future<void> deleteCredentials() async { | ||
| await _storage.delete(key: 'user_private_key'); | ||
| await _storage.delete(key: 'user_pin'); | ||
| await _storage.delete(key: 'use_biometrics'); | ||
| throw UnimplementedError('deleteCredentials is not implemented yet'); |
There was a problem hiding this comment.
💡 Codebase verification
Add error handling for unimplemented credential management
The code clearly indicates this is an alpha preview with appropriate warnings in comments, but the UnimplementedError exceptions need proper error handling in the UI. Currently, there are no UI messages specifically handling these unimplemented features, which could lead to unexpected crashes.
lib/core/utils/auth_utils.dart: All authentication methods throwUnimplementedErrorlib/presentation/auth/screens/login_screen.dartandregister_screen.dart: Have error snackbars but no specific handling for unimplemented features
🔗 Analysis chain
Verify user feedback for unimplemented credential management
While the implementation is appropriate for an alpha preview, ensure the UI properly communicates this limitation to users.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for UI elements or strings related to credential deletion
rg -t dart "delete.*credentials?" lib/
rg -t dart "credentials.*delete?" lib/
Length of output: 81
Script:
#!/bin/bash
# Search for UI components and strings that might reference credential management
rg -t dart "credentials?" -A 3 -B 3 lib/
Length of output: 543
Script:
#!/bin/bash
# Look for any UI dialog, snackbar, or error messages
rg -t dart "(showDialog|SnackBar|showError|message.*credentials)" lib/
Length of output: 694
Script:
#!/bin/bash
# Check for any auth-related UI components
fd -e dart . lib/ --exec grep -l "auth"
Length of output: 442
Script:
#!/bin/bash
# Check the auth utils implementation for any alpha/preview warnings
cat lib/core/utils/auth_utils.dart
Length of output: 1084
Script:
#!/bin/bash
# Look for any alpha/preview related messages in auth screens
rg -t dart "alpha|preview|not.*implement" lib/presentation/auth/
Length of output: 66
| static Rating empty() { | ||
| return const Rating( | ||
| totalReviews: 0, | ||
| totalRating: 0.0, | ||
| lastRating: 0, | ||
| maxRate: 0, | ||
| minRate: 0, | ||
| ); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Reconsider default values in empty Rating.
Setting maxRate and minRate to 0 could be problematic as it:
- Creates an invalid state where maxRate equals minRate
- Prevents proper validation of future ratings
- May not represent a meaningful rating scale
Consider using more appropriate defaults:
static Rating empty() {
return const Rating(
totalReviews: 0,
totalRating: 0.0,
lastRating: 0,
- maxRate: 0,
- minRate: 0,
+ maxRate: 5, // Typical maximum rating value
+ minRate: 1, // Typical minimum rating value
);
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| static Rating empty() { | |
| return const Rating( | |
| totalReviews: 0, | |
| totalRating: 0.0, | |
| lastRating: 0, | |
| maxRate: 0, | |
| minRate: 0, | |
| ); | |
| } | |
| static Rating empty() { | |
| return const Rating( | |
| totalReviews: 0, | |
| totalRating: 0.0, | |
| lastRating: 0, | |
| maxRate: 5, // Typical maximum rating value | |
| minRate: 1, // Typical minimum rating value | |
| ); | |
| } |
| static int _parseInt(Map<String, dynamic> json, String field) { | ||
| final value = json[field]; | ||
| if (value is int) return value; | ||
| if (value is double) return value.toInt(); | ||
| throw FormatException('Invalid value for $field: $value'); | ||
| } | ||
|
|
||
| static double _parseDouble(Map<String, dynamic> json, String field) { | ||
| final value = json[field]; | ||
| if (value is double) return value; | ||
| if (value is int) return value.toDouble(); | ||
| throw FormatException('Invalid value for $field: $value'); | ||
| } |
There was a problem hiding this comment.
Add explicit null handling in parsing methods.
The current implementation might throw unclear errors when encountering null values. Consider adding explicit null checks:
static int _parseInt(Map<String, dynamic> json, String field) {
final value = json[field];
+ if (value == null) {
+ throw FormatException('Missing required field: $field');
+ }
if (value is int) return value;
if (value is double) return value.toInt();
throw FormatException('Invalid value for $field: $value');
}
static double _parseDouble(Map<String, dynamic> json, String field) {
final value = json[field];
+ if (value == null) {
+ throw FormatException('Missing required field: $field');
+ }
if (value is double) return value;
if (value is int) return value.toDouble();
throw FormatException('Invalid value for $field: $value');
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| static int _parseInt(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value is int) return value; | |
| if (value is double) return value.toInt(); | |
| throw FormatException('Invalid value for $field: $value'); | |
| } | |
| static double _parseDouble(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value is double) return value; | |
| if (value is int) return value.toDouble(); | |
| throw FormatException('Invalid value for $field: $value'); | |
| } | |
| static int _parseInt(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value == null) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| if (value is int) return value; | |
| if (value is double) return value.toInt(); | |
| throw FormatException('Invalid value for $field: $value'); | |
| } | |
| static double _parseDouble(Map<String, dynamic> json, String field) { | |
| final value = json[field]; | |
| if (value == null) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| if (value is double) return value; | |
| if (value is int) return value.toDouble(); | |
| throw FormatException('Invalid value for $field: $value'); | |
| } |
| static Future<NostrEvent> decryptNIP59Event( | ||
| NostrEvent event, String privateKey) async { | ||
| // Validate inputs | ||
| if (event.content == null || event.content!.isEmpty) { | ||
| throw ArgumentError('Event content is empty'); | ||
| } | ||
| if (!isValidPrivateKey(privateKey)) { | ||
| throw ArgumentError('Invalid private key'); | ||
| } | ||
|
|
||
| return finalDecryptedContent; | ||
| try { | ||
| final decryptedContent = | ||
| await _decryptNIP44(event.content ?? '', privateKey, event.pubkey); | ||
|
|
||
| final rumorEvent = | ||
| NostrEvent.deserialized('["EVENT", "", $decryptedContent]'); | ||
|
|
||
| final finalDecryptedContent = await _decryptNIP44( | ||
| rumorEvent.content ?? '', privateKey, rumorEvent.pubkey); | ||
|
|
||
| final wrap = jsonDecode(finalDecryptedContent) as Map<String, dynamic>; | ||
|
|
||
| // Validate decrypted event structure | ||
| _validateEventStructure(wrap); | ||
|
|
||
| return NostrEvent( | ||
| id: wrap['id'] as String, | ||
| kind: wrap['kind'] as int, | ||
| content: wrap['content'] as String, | ||
| sig: "", | ||
| pubkey: wrap['pubkey'] as String, | ||
| createdAt: DateTime.fromMillisecondsSinceEpoch( | ||
| (wrap['created_at'] as int) * 1000, | ||
| ), | ||
| tags: List<List<String>>.from( | ||
| (wrap['tags'] as List) | ||
| .map( | ||
| (nestedElem) => (nestedElem as List) | ||
| .map( | ||
| (nestedElemContent) => nestedElemContent.toString(), | ||
| ) | ||
| .toList(), | ||
| ) | ||
| .toList(), | ||
| ), | ||
| subscriptionId: '', | ||
| ); | ||
| } catch (e) { | ||
| throw Exception('Failed to decrypt NIP-59 event: $e'); | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add additional validation for decrypted content.
The current implementation could benefit from additional validation steps:
- Content format validation
- Event type validation
- Timestamp validation
static Future<NostrEvent> decryptNIP59Event(
NostrEvent event, String privateKey) async {
// ... existing validation ...
try {
final decryptedContent =
await _decryptNIP44(event.content ?? '', privateKey, event.pubkey);
+ // Validate JSON format before parsing
+ if (!_isValidJson(decryptedContent)) {
+ throw FormatException('Decrypted content is not valid JSON');
+ }
final rumorEvent =
NostrEvent.deserialized('["EVENT", "", $decryptedContent]');
+ // Validate event type
+ if (rumorEvent.kind != 1) {
+ throw FormatException('Invalid rumor event type: ${rumorEvent.kind}');
+ }
// ... rest of the implementation ...
}
}
+ static bool _isValidJson(String str) {
+ try {
+ json.decode(str);
+ return true;
+ } catch (e) {
+ return false;
+ }
+ }Committable suggestion skipped: line range outside the PR's diff.
| /// Validates the structure of a decrypted event | ||
| static void _validateEventStructure(Map<String, dynamic> event) { | ||
| final requiredFields = [ | ||
| 'id', | ||
| 'kind', | ||
| 'content', | ||
| 'pubkey', | ||
| 'created_at', | ||
| 'tags' | ||
| ]; | ||
| for (final field in requiredFields) { | ||
| if (!event.containsKey(field)) { | ||
| throw FormatException('Missing required field: $field'); | ||
| } | ||
| } |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Add type validation for event fields.
The current implementation only checks for field presence but not their types.
static void _validateEventStructure(Map<String, dynamic> event) {
- final requiredFields = [
- 'id',
- 'kind',
- 'content',
- 'pubkey',
- 'created_at',
- 'tags'
- ];
+ final requiredFields = {
+ 'id': String,
+ 'kind': int,
+ 'content': String,
+ 'pubkey': String,
+ 'created_at': int,
+ 'tags': List
+ };
- for (final field in requiredFields) {
+ for (final field in requiredFields.entries) {
if (!event.containsKey(field)) {
- throw FormatException('Missing required field: $field');
+ throw FormatException('Missing required field: ${field.key}');
+ }
+ if (event[field.key].runtimeType != field.value) {
+ throw FormatException(
+ 'Invalid type for ${field.key}: expected ${field.value}, got ${event[field.key].runtimeType}');
}
}
}📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| /// Validates the structure of a decrypted event | |
| static void _validateEventStructure(Map<String, dynamic> event) { | |
| final requiredFields = [ | |
| 'id', | |
| 'kind', | |
| 'content', | |
| 'pubkey', | |
| 'created_at', | |
| 'tags' | |
| ]; | |
| for (final field in requiredFields) { | |
| if (!event.containsKey(field)) { | |
| throw FormatException('Missing required field: $field'); | |
| } | |
| } | |
| /// Validates the structure of a decrypted event | |
| static void _validateEventStructure(Map<String, dynamic> event) { | |
| final requiredFields = { | |
| 'id': String, | |
| 'kind': int, | |
| 'content': String, | |
| 'pubkey': String, | |
| 'created_at': int, | |
| 'tags': List | |
| }; | |
| for (final field in requiredFields.entries) { | |
| if (!event.containsKey(field)) { | |
| throw FormatException('Missing required field: ${field.key}'); | |
| } | |
| if (event[field.key].runtimeType != field.value) { | |
| throw FormatException( | |
| 'Invalid type for ${field.key}: expected ${field.value}, got ${event[field.key].runtimeType}'); | |
| } | |
| } |
| return Scaffold( | ||
| backgroundColor: AppTheme.dark1, | ||
| appBar: _buildAppBar( | ||
| '${order.orderType?.value.toUpperCase()} BITCOIN', context), |
There was a problem hiding this comment.
Add null safety handling for order properties
Multiple force unwraps of nullable fields could lead to runtime crashes.
- '${order.orderType?.value.toUpperCase()} BITCOIN'
+ '${order.orderType?.value?.toUpperCase() ?? 'UNKNOWN'} BITCOIN'
- ExchangeRateWidget(currency: order.currency!)
+ ExchangeRateWidget(currency: order.currency ?? 'USD')
- Text(order.name!,
+ Text(order.name ?? 'Anonymous',
- '${order.rating?.totalRating}/${order.rating?.maxRate} (${order.rating?.totalReviews})'
+ '${order.rating?.totalRating ?? 0}/${order.rating?.maxRate ?? 5} (${order.rating?.totalReviews ?? 0})'Also applies to: 148-148, 193-193, 197-197
| onPressed: () { | ||
| context.read<OrderDetailsBloc>().add(CancelOrder()); | ||
| Navigator.of(context).pop(); | ||
| }, |
There was a problem hiding this comment.
Add proper cancellation handling
The cancel action should notify the bloc to properly handle order cancellation.
- Navigator.of(context).pop();
+ context.read<OrderDetailsBloc>().add(CancelOrder(initialOrder));Committable suggestion skipped: line range outside the PR's diff.
| case OrderDetailsStatus.done: | ||
| return _buildCompletionMessage(context, state); | ||
| case OrderDetailsStatus.loaded: | ||
| return _buildContent(context, ref, state.order!); |
There was a problem hiding this comment.
Add null safety check for state.order
The force unwrap of state.order! could lead to runtime crashes if the order is null.
- return _buildContent(context, ref, state.order!);
+ return state.order != null
+ ? _buildContent(context, ref, state.order!)
+ : const Center(child: Text('Order data not available'));📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| return _buildContent(context, ref, state.order!); | |
| return state.order != null | |
| ? _buildContent(context, ref, state.order!) | |
| : const Center(child: Text('Order data not available')); |
| /// 1. Inner event (kind 1): Original content | ||
| /// 2. Seal event (kind 13): Encrypted inner event | ||
| /// 3. Wrapper event (kind 1059): Final encrypted package | ||
| static Future<NostrEvent> createNIP59Event( |
There was a problem hiding this comment.
Support for encrypting DMs to send to the mostro daemon as per issue #3
| _calculateSharedSecret(privateKey, rumorEvent.pubkey); | ||
| final finalDecryptedContent = | ||
| _decryptNIP44(rumorEvent.content ?? '', rumorSharedSecret); | ||
| static Future<NostrEvent> decryptNIP59Event( |
There was a problem hiding this comment.
Support for decrypting DMs from mostro as per issue #3
| @@ -0,0 +1,68 @@ | |||
| enum Action { | |||
There was a problem hiding this comment.
Introduces the Actin type for the mostro message as per issue #3
| @@ -0,0 +1,53 @@ | |||
| import 'dart:convert'; | |||
There was a problem hiding this comment.
Implements the mostro message kind as per #3
| collection: ^1.18.0 | ||
| elliptic: ^0.3.11 | ||
|
|
||
| nip44: |
There was a problem hiding this comment.
NIP-44 support was implemented as per issue #3 but bundled into a separate library as it has utility for other Nostr developers. This library can be transferred to the mostro project if desired
| @@ -0,0 +1,40 @@ | |||
| import 'package:dart_nostr/dart_nostr.dart'; | |||
There was a problem hiding this comment.
The Session object addresses issue #28
There was a problem hiding this comment.
Hi @chebizarro, thanks for considering the comments I made to you. I've already test it and it shows the pending orders very well
Take sell/buy orders can be left for another PR, no problem, great job!
@chebizarro Understood, but the description of this PR has this written: Could you please update this removing what we are not going to have on this PR so we can merge it? thanks |
This is a preview only and should not be used in a production environment!
This PR brings the repo to am Android buildable state where it can interact with a Mostro daemon and Nostr relay.
On startup, it connects to a relay running on port 7000 on either 127.0.0.1 or 10.0.2.2 if running in an emulator. The relays and the mostro daemon public key can be configured in the file
lib/core/config.dartCurrently this preview allows for adding Buy/Sell Orders
It still lacks a UI for finalizing orders
Only ephemeral keys are used for orders, so once again, do not use in a production environment
Summary by CodeRabbit
Release Notes
New Features
Bug Fixes
Refactor
Documentation