lib.rs

#![cfg_attr(not(feature = "std"), no_std)]

#[cfg(feature = "std")]
include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));

use codec::Encode;
use pallet_grandpa::AuthorityId as GrandpaId;
use sp_api::impl_runtime_apis;
use sp_consensus_aura::sr25519::AuthorityId as AuraId;
use sp_core::{crypto::KeyTypeId, OpaqueMetadata};
use sp_runtime::{
	create_runtime_str, generic, impl_opaque_keys,
	DispatchError,
	traits::{BlakeTwo256, Block as BlockT, IdentifyAccount, NumberFor, One, Verify},
	transaction_validity::{TransactionSource, TransactionValidity},
	ApplyExtrinsicResult, MultiSignature, SaturatedConversion,
};
use sp_std::prelude::*;
#[cfg(feature = "std")]
use sp_version::NativeVersion;
use sp_version::RuntimeVersion;

use frame_support::PalletId;
use frame_system::{EnsureRoot, EnsureSigned};

pub use frame_support::{
	dynamic_params::{dynamic_pallet_params, dynamic_params},
	construct_runtime, derive_impl, parameter_types,
	traits::{
		ConstBool, ConstU128, ConstU32, ConstU64, ConstU8, KeyOwnerProofSystem, Randomness,
		StorageInfo, Nothing,
	},
	weights::{
		constants::{
			BlockExecutionWeight, ExtrinsicBaseWeight, RocksDbWeight, WEIGHT_REF_TIME_PER_SECOND,
		},
		IdentityFee, Weight,
	},
	StorageValue,
};
use frame_support::{
	genesis_builder_helper::{build_state, get_preset},
	traits::VariantCountOf,
};
pub use frame_system::Call as SystemCall;
pub use pallet_balances::Call as BalancesCall;
pub use pallet_timestamp::Call as TimestampCall;
use pallet_transaction_payment::{ConstFeeMultiplier, FungibleAdapter, Multiplier};
#[cfg(any(feature = "std", test))]
pub use sp_runtime::BuildStorage;
pub use sp_runtime::{Perbill, Permill};

use sp_core::crypto::UncheckedFrom;

use pallet_contracts::{
	DebugInfo, 
	chain_extension::{
		ChainExtension,
		Environment,
		Ext,
		InitState,
		RetVal,
		SysConfig,
	}
};

// /// Import the template pallet.
// pub use pallet_template;
pub use pallet_drand;

/// An index to a block.
pub type BlockNumber = u32;

/// Alias to 512-bit hash when used in the context of a transaction signature on the chain.
pub type Signature = MultiSignature;

/// Some way of identifying an account on the chain. We intentionally make it equivalent
/// to the public key of our transaction signing scheme.
pub type AccountId = <<Signature as Verify>::Signer as IdentifyAccount>::AccountId;

/// Balance of an account.
pub type Balance = u128;

/// Index of a transaction in the chain.
pub type Nonce = u32;

/// A hash of some data used by the chain.
pub type Hash = sp_core::H256;

/// Index of a transaction in the chain.
pub type Index = u32;


/// Opaque types. These are used by the CLI to instantiate machinery that don't need to know
/// the specifics of the runtime. They can then be made to be agnostic over specific formats
/// of data like extrinsics, allowing for them to continue syncing the network through upgrades
/// to even the core data structures.
pub mod opaque {
	use super::*;

	pub use sp_runtime::OpaqueExtrinsic as UncheckedExtrinsic;

	/// Opaque block header type.
	pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
	/// Opaque block type.
	pub type Block = generic::Block<Header, UncheckedExtrinsic>;
	/// Opaque block identifier type.
	pub type BlockId = generic::BlockId<Block>;

	impl_opaque_keys! {
		pub struct SessionKeys {
			pub aura: Aura,
			pub grandpa: Grandpa,
		}
	}
}

// To learn more about runtime versioning, see:
// https://docs.substrate.io/main-docs/build/upgrade#runtime-versioning
#[sp_version::runtime_version]
pub const VERSION: RuntimeVersion = RuntimeVersion {
	spec_name: create_runtime_str!("node-template-runtime"),
	impl_name: create_runtime_str!("node-template-runtime"),
	authoring_version: 1,
	// The version of the runtime specification. A full node will not attempt to use its native
	//   runtime in substitute for the on-chain Wasm runtime unless all of `spec_name`,
	//   `spec_version`, and `authoring_version` are the same between Wasm and native.
	// This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
	//   the compatible custom types.
	spec_version: 100,
	impl_version: 1,
	apis: RUNTIME_API_VERSIONS,
	transaction_version: 1,
	state_version: 1,
};

/// This determines the average expected block time that we are targeting.
/// Blocks will be produced at a minimum duration defined by `SLOT_DURATION`.
/// `SLOT_DURATION` is picked up by `pallet_timestamp` which is in turn picked
/// up by `pallet_aura` to implement `fn slot_duration()`.
///
/// Change this to adjust the block time.
pub const MILLISECS_PER_BLOCK: u64 = 6000;

// NOTE: Currently it is not possible to change the slot duration after the chain has started.
//       Attempting to do so will brick block production.
pub const SLOT_DURATION: u64 = MILLISECS_PER_BLOCK;

// Time is measured by number of blocks.
pub const MINUTES: BlockNumber = 60_000 / (MILLISECS_PER_BLOCK as BlockNumber);
pub const HOURS: BlockNumber = MINUTES * 60;
pub const DAYS: BlockNumber = HOURS * 24;

// Prints debug output of the `contracts` pallet to stdout if the node is
// started with `-lruntime::contracts=debug`.
pub const CONTRACTS_DEBUG_OUTPUT: DebugInfo = DebugInfo::UnsafeDebug;

type EventRecord = frame_system::EventRecord<
	<Runtime as frame_system::Config>::RuntimeEvent,
	<Runtime as frame_system::Config>::Hash,
>;

/// The version information used to identify this runtime when compiled natively.
#[cfg(feature = "std")]
pub fn native_version() -> NativeVersion {
	NativeVersion { runtime_version: VERSION, can_author_with: Default::default() }
}

const NORMAL_DISPATCH_RATIO: Perbill = Perbill::from_percent(75);

// Contracts price units.
pub const MILLICENTS: Balance = 1_000_000;
pub const CENTS: Balance = 1_000 * MILLICENTS;
pub const DOLLARS: Balance = 100 * CENTS;

const fn deposit(items: u32, bytes: u32) -> Balance {
	(items as Balance * CENTS + (bytes as Balance) * (5 * MILLICENTS / 100)) / 100
}

parameter_types! {
	pub const BlockHashCount: BlockNumber = 2400;
	pub const Version: RuntimeVersion = VERSION;
	/// We allow for 2 seconds of compute with a 6 second average block time.
	pub BlockWeights: frame_system::limits::BlockWeights =
		frame_system::limits::BlockWeights::with_sensible_defaults(
			Weight::from_parts(2u64 * WEIGHT_REF_TIME_PER_SECOND, u64::MAX),
			NORMAL_DISPATCH_RATIO,
		);
	pub BlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength
		::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
	pub const SS58Prefix: u8 = 42;
}

/// The default types are being injected by [`derive_impl`](`frame_support::derive_impl`) from
/// [`SoloChainDefaultConfig`](`struct@frame_system::config_preludes::SolochainDefaultConfig`),
/// but overridden as needed.
#[derive_impl(frame_system::config_preludes::SolochainDefaultConfig)]
impl frame_system::Config for Runtime {
	/// The block type for the runtime.
	type Block = Block;
	/// Block & extrinsics weights: base values and limits.
	type BlockWeights = BlockWeights;
	/// The maximum length of a block (in bytes).
	type BlockLength = BlockLength;
	/// The identifier used to distinguish between accounts.
	type AccountId = AccountId;
	/// The type for storing how many extrinsics an account has signed.
	type Nonce = Nonce;
	/// The type for hashing blocks and tries.
	type Hash = Hash;
	/// Maximum number of block number to block hash mappings to keep (oldest pruned first).
	type BlockHashCount = BlockHashCount;
	/// The weight of database operations that the runtime can invoke.
	type DbWeight = RocksDbWeight;
	/// Version of the runtime.
	type Version = Version;
	/// The data to be stored in an account.
	type AccountData = pallet_balances::AccountData<Balance>;
	/// This is used as an identifier of the chain. 42 is the generic substrate prefix.
	type SS58Prefix = SS58Prefix;
	type MaxConsumers = frame_support::traits::ConstU32<16>;
}

impl pallet_aura::Config for Runtime {
	type AuthorityId = AuraId;
	type DisabledValidators = ();
	type MaxAuthorities = ConstU32<32>;
	type AllowMultipleBlocksPerSlot = ConstBool<false>;
	type SlotDuration = pallet_aura::MinimumPeriodTimesTwo<Runtime>;
}

impl pallet_grandpa::Config for Runtime {
	type RuntimeEvent = RuntimeEvent;

	type WeightInfo = ();
	type MaxAuthorities = ConstU32<32>;
	type MaxNominators = ConstU32<0>;
	type MaxSetIdSessionEntries = ConstU64<0>;

	type KeyOwnerProof = sp_core::Void;
	type EquivocationReportSystem = ();
}

impl pallet_timestamp::Config for Runtime {
	/// A timestamp: milliseconds since the unix epoch.
	type Moment = u64;
	type OnTimestampSet = Aura;
	type MinimumPeriod = ConstU64<{ SLOT_DURATION / 2 }>;
	type WeightInfo = ();
}

/// Existential deposit.
pub const EXISTENTIAL_DEPOSIT: u128 = 500;

impl pallet_balances::Config for Runtime {
	type MaxLocks = ConstU32<50>;
	type MaxReserves = ();
	type ReserveIdentifier = [u8; 8];
	/// The type for recording an account's balance.
	type Balance = Balance;
	/// The ubiquitous event type.
	type RuntimeEvent = RuntimeEvent;
	type DustRemoval = ();
	type ExistentialDeposit = ConstU128<EXISTENTIAL_DEPOSIT>;
	type AccountStore = System;
	type WeightInfo = pallet_balances::weights::SubstrateWeight<Runtime>;
	type FreezeIdentifier = RuntimeFreezeReason;
	type MaxFreezes = VariantCountOf<RuntimeFreezeReason>;
	type RuntimeHoldReason = RuntimeHoldReason;
	type RuntimeFreezeReason = RuntimeHoldReason;
}

parameter_types! {
	pub FeeMultiplier: Multiplier = Multiplier::one();
}

impl pallet_transaction_payment::Config for Runtime {
	type RuntimeEvent = RuntimeEvent;
	type OnChargeTransaction = FungibleAdapter<Balances, ()>;
	type OperationalFeeMultiplier = ConstU8<5>;
	type WeightToFee = IdentityFee<Balance>;
	type LengthToFee = IdentityFee<Balance>;
	type FeeMultiplierUpdate = ConstFeeMultiplier<FeeMultiplier>;
}

impl pallet_sudo::Config for Runtime {
	type RuntimeEvent = RuntimeEvent;
	type RuntimeCall = RuntimeCall;
	type WeightInfo = pallet_sudo::weights::SubstrateWeight<Runtime>;
}

impl pallet_drand::Config for Runtime {
	type RuntimeEvent = RuntimeEvent;
	type WeightInfo = pallet_drand::weights::SubstrateWeight<Runtime>;
	type AuthorityId = pallet_drand::crypto::TestAuthId;
	type Verifier = pallet_drand::QuicknetVerifier;
	type UpdateOrigin = EnsureSigned<AccountId>;
}

parameter_types! {
	pub const LotteryPalletId: PalletId = PalletId(*b"py/lotto");
	pub const MaxCalls: u32 = 10;
	pub const MaxGenerateRandom: u32 = 10;
}

impl pallet_lottery::Config for Runtime {
	type PalletId = LotteryPalletId;
	type RuntimeCall = RuntimeCall;
	type Currency = Balances;
	type Randomness = Drand;
	type RuntimeEvent = RuntimeEvent;
	type ManagerOrigin = EnsureRoot<AccountId>;
	type MaxCalls = MaxCalls;
	type ValidateCall = Lottery;
	type MaxGenerateRandom = MaxGenerateRandom;
	type WeightInfo = pallet_lottery::weights::SubstrateWeight<Runtime>;
}

parameter_types! {
	pub const DepositPerItem: Balance = deposit(0, 0);
	pub const DepositPerByte: Balance = deposit(0, 0);
	pub const DefaultDepositLimit: Balance = deposit(1024, 1024 * 1024);
	pub Schedule: pallet_contracts::Schedule<Runtime> = Default::default();
	pub CodeHashLockupDepositPercent: Perbill = Perbill::from_percent(30);
}

impl pallet_contracts::Config for Runtime {
	type Time = Timestamp;
	type Randomness = Drand;
	type Currency = Balances;
	type RuntimeEvent = RuntimeEvent;
	type RuntimeCall = RuntimeCall;
	/// The safest default is to allow no calls at all.
	///
	/// Runtimes should whitelist dispatchables that are allowed to be called from contracts
	/// and make sure they are stable. Dispatchables exposed to contracts are not allowed to
	/// change because that would break already deployed contracts. The `Call` structure itself
	/// is not allowed to change the indices of existing pallets, too.
	type CallFilter = Nothing;
	type DepositPerItem = DepositPerItem;
	type DepositPerByte = DepositPerByte;
	type DefaultDepositLimit = DefaultDepositLimit;
	type CallStack = [pallet_contracts::Frame<Self>; 5];
	type WeightPrice = pallet_transaction_payment::Pallet<Self>;
	type WeightInfo = pallet_contracts::weights::SubstrateWeight<Self>;
	type ChainExtension = DrandExtension;
	type Schedule = Schedule;
	type AddressGenerator = pallet_contracts::DefaultAddressGenerator;
	type MaxCodeLen = ConstU32<{ 123 * 1024 }>;
	type MaxStorageKeyLen = ConstU32<128>;
	type UnsafeUnstableInterface = ConstBool<false>;
	type UploadOrigin = EnsureSigned<Self::AccountId>;
	type InstantiateOrigin = EnsureSigned<Self::AccountId>;
	type MaxDebugBufferLen = ConstU32<{ 2 * 1024 * 1024 }>;
	type RuntimeHoldReason = RuntimeHoldReason;
	#[cfg(not(feature = "runtime-benchmarks"))]
	type Migrations = ();
	#[cfg(feature = "runtime-benchmarks")]
	type Migrations = pallet_contracts::migration::codegen::BenchMigrations;
	type MaxDelegateDependencies = ConstU32<32>;
	type CodeHashLockupDepositPercent = CodeHashLockupDepositPercent;
	type Debug = ();
	type Environment = ();
	type ApiVersion = ();
	type Xcm = ();
	type MaxTransientStorageSize = ();
}

// Create the runtime by composing the FRAME pallets that were previously configured.
#[frame_support::runtime]
mod runtime {
	#[runtime::runtime]
	#[runtime::derive(
		RuntimeCall,
		RuntimeEvent,
		RuntimeError,
		RuntimeOrigin,
		RuntimeFreezeReason,
		RuntimeHoldReason,
		RuntimeSlashReason,
		RuntimeLockId,
		RuntimeTask
	)]
	pub struct Runtime;

	#[runtime::pallet_index(0)]
	pub type System = frame_system;

	#[runtime::pallet_index(1)]
	pub type Timestamp = pallet_timestamp;

	#[runtime::pallet_index(2)]
	pub type Aura = pallet_aura;

	#[runtime::pallet_index(3)]
	pub type Grandpa = pallet_grandpa;

	#[runtime::pallet_index(4)]
	pub type Balances = pallet_balances;

	#[runtime::pallet_index(5)]
	pub type TransactionPayment = pallet_transaction_payment;

	#[runtime::pallet_index(6)]
	pub type Sudo = pallet_sudo;

	// // Include the custom logic from the pallet-template in the runtime.
	#[runtime::pallet_index(7)]
	pub type Drand = pallet_drand;

	#[runtime::pallet_index(8)]
	pub type Lottery = pallet_lottery;

	#[runtime::pallet_index(9)]
	pub type Contracts = pallet_contracts;
}

impl<LocalCall> frame_system::offchain::CreateSignedTransaction<LocalCall> for Runtime
where
	RuntimeCall: From<LocalCall>,
{
	fn create_transaction<C: frame_system::offchain::AppCrypto<Self::Public, Self::Signature>>(
		call: RuntimeCall,
		public: <Signature as sp_runtime::traits::Verify>::Signer,
		account: AccountId,
		index: Index,
	) -> Option<(RuntimeCall, <UncheckedExtrinsic as sp_runtime::traits::Extrinsic>::SignaturePayload)> {
		let period = BlockHashCount::get() as u64;
		let current_block = System::block_number()
			.saturated_into::<u64>()
			.saturating_sub(1);
		let tip = 0;
		let extra: SignedExtra = (
			frame_system::CheckNonZeroSender::<Runtime>::new(),
			frame_system::CheckSpecVersion::<Runtime>::new(),
			frame_system::CheckTxVersion::<Runtime>::new(),
			frame_system::CheckGenesis::<Runtime>::new(),
			frame_system::CheckEra::<Runtime>::from(generic::Era::mortal(period, current_block)),
			frame_system::CheckNonce::<Runtime>::from(index),
			frame_system::CheckWeight::<Runtime>::new(),
			pallet_transaction_payment::ChargeTransactionPayment::<Runtime>::from(tip),
		);

		let raw_payload = SignedPayload::new(call, extra)
			.map_err(|e| {
				log::warn!("Unable to create signed payload: {:?}", e);
			})
			.ok()?;
		let signature = raw_payload.using_encoded(|payload| C::sign(payload, public))?;
		let address = account;
		let (call, extra, _) = raw_payload.deconstruct();
		Some((call, (sp_runtime::MultiAddress::Id(address), signature.into(), extra)))
	}
}

impl frame_system::offchain::SigningTypes for Runtime {
	type Public = <Signature as sp_runtime::traits::Verify>::Signer;
	type Signature = Signature;
}

impl<C> frame_system::offchain::SendTransactionTypes<C> for Runtime
where
RuntimeCall: From<C>,
{
	type OverarchingCall = RuntimeCall;
	type Extrinsic = UncheckedExtrinsic;
}

/// The address format for describing accounts.
pub type Address = sp_runtime::MultiAddress<AccountId, ()>;
/// Block header type as expected by this runtime.
pub type Header = generic::Header<BlockNumber, BlakeTwo256>;
/// Block type as expected by this runtime.
pub type Block = generic::Block<Header, UncheckedExtrinsic>;
/// The SignedExtension to the basic transaction logic.
pub type SignedExtra = (
	frame_system::CheckNonZeroSender<Runtime>,
	frame_system::CheckSpecVersion<Runtime>,
	frame_system::CheckTxVersion<Runtime>,
	frame_system::CheckGenesis<Runtime>,
	frame_system::CheckEra<Runtime>,
	frame_system::CheckNonce<Runtime>,
	frame_system::CheckWeight<Runtime>,
	pallet_transaction_payment::ChargeTransactionPayment<Runtime>,
);

/// All migrations of the runtime, aside from the ones declared in the pallets.
///
/// This can be a tuple of types, each implementing `OnRuntimeUpgrade`.
#[allow(unused_parens)]
type Migrations = ();

/// Unchecked extrinsic type as expected by this runtime.
pub type UncheckedExtrinsic =
	generic::UncheckedExtrinsic<Address, RuntimeCall, Signature, SignedExtra>;
/// The payload being signed in transactions.
pub type SignedPayload = generic::SignedPayload<RuntimeCall, SignedExtra>;
/// Executive: handles dispatch to the various modules.
pub type Executive = frame_executive::Executive<
	Runtime,
	Block,
	frame_system::ChainContext<Runtime>,
	Runtime,
	AllPalletsWithSystem,
	Migrations,
>;

#[cfg(feature = "runtime-benchmarks")]
mod benches {
	frame_benchmarking::define_benchmarks!(
		[frame_benchmarking, BaselineBench::<Runtime>]
		[frame_system, SystemBench::<Runtime>]
		[pallet_balances, Balances]
		[pallet_timestamp, Timestamp]
		[pallet_sudo, Sudo]
		[pallet_drand, Drand]
	);
}

impl_runtime_apis! {
	impl sp_api::Core<Block> for Runtime {
		fn version() -> RuntimeVersion {
			VERSION
		}

		fn execute_block(block: Block) {
			Executive::execute_block(block);
		}

		fn initialize_block(header: &<Block as BlockT>::Header) -> sp_runtime::ExtrinsicInclusionMode {
			Executive::initialize_block(header)
		}
	}

	impl sp_api::Metadata<Block> for Runtime {
		fn metadata() -> OpaqueMetadata {
			OpaqueMetadata::new(Runtime::metadata().into())
		}

		fn metadata_at_version(version: u32) -> Option<OpaqueMetadata> {
			Runtime::metadata_at_version(version)
		}

		fn metadata_versions() -> sp_std::vec::Vec<u32> {
			Runtime::metadata_versions()
		}
	}

	impl sp_block_builder::BlockBuilder<Block> for Runtime {
		fn apply_extrinsic(extrinsic: <Block as BlockT>::Extrinsic) -> ApplyExtrinsicResult {
			Executive::apply_extrinsic(extrinsic)
		}

		fn finalize_block() -> <Block as BlockT>::Header {
			Executive::finalize_block()
		}

		fn inherent_extrinsics(data: sp_inherents::InherentData) -> Vec<<Block as BlockT>::Extrinsic> {
			data.create_extrinsics()
		}

		fn check_inherents(
			block: Block,
			data: sp_inherents::InherentData,
		) -> sp_inherents::CheckInherentsResult {
			data.check_extrinsics(&block)
		}
	}

	impl sp_transaction_pool::runtime_api::TaggedTransactionQueue<Block> for Runtime {
		fn validate_transaction(
			source: TransactionSource,
			tx: <Block as BlockT>::Extrinsic,
			block_hash: <Block as BlockT>::Hash,
		) -> TransactionValidity {
			Executive::validate_transaction(source, tx, block_hash)
		}
	}

	impl sp_offchain::OffchainWorkerApi<Block> for Runtime {
		fn offchain_worker(header: &<Block as BlockT>::Header) {
			Executive::offchain_worker(header)
		}
	}

	impl sp_consensus_aura::AuraApi<Block, AuraId> for Runtime {
		fn slot_duration() -> sp_consensus_aura::SlotDuration {
			sp_consensus_aura::SlotDuration::from_millis(Aura::slot_duration())
		}

		fn authorities() -> Vec<AuraId> {
			pallet_aura::Authorities::<Runtime>::get().into_inner()
		}
	}

	impl sp_session::SessionKeys<Block> for Runtime {
		fn generate_session_keys(seed: Option<Vec<u8>>) -> Vec<u8> {
			opaque::SessionKeys::generate(seed)
		}

		fn decode_session_keys(
			encoded: Vec<u8>,
		) -> Option<Vec<(Vec<u8>, KeyTypeId)>> {
			opaque::SessionKeys::decode_into_raw_public_keys(&encoded)
		}
	}

	impl sp_consensus_grandpa::GrandpaApi<Block> for Runtime {
		fn grandpa_authorities() -> sp_consensus_grandpa::AuthorityList {
			Grandpa::grandpa_authorities()
		}

		fn current_set_id() -> sp_consensus_grandpa::SetId {
			Grandpa::current_set_id()
		}

		fn submit_report_equivocation_unsigned_extrinsic(
			_equivocation_proof: sp_consensus_grandpa::EquivocationProof<
				<Block as BlockT>::Hash,
				NumberFor<Block>,
			>,
			_key_owner_proof: sp_consensus_grandpa::OpaqueKeyOwnershipProof,
		) -> Option<()> {
			None
		}

		fn generate_key_ownership_proof(
			_set_id: sp_consensus_grandpa::SetId,
			_authority_id: GrandpaId,
		) -> Option<sp_consensus_grandpa::OpaqueKeyOwnershipProof> {
			// NOTE: this is the only implementation possible since we've
			// defined our key owner proof type as a bottom type (i.e. a type
			// with no values).
			None
		}
	}

	impl frame_system_rpc_runtime_api::AccountNonceApi<Block, AccountId, Nonce> for Runtime {
		fn account_nonce(account: AccountId) -> Nonce {
			System::account_nonce(account)
		}
	}

	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentApi<Block, Balance> for Runtime {
		fn query_info(
			uxt: <Block as BlockT>::Extrinsic,
			len: u32,
		) -> pallet_transaction_payment_rpc_runtime_api::RuntimeDispatchInfo<Balance> {
			TransactionPayment::query_info(uxt, len)
		}
		fn query_fee_details(
			uxt: <Block as BlockT>::Extrinsic,
			len: u32,
		) -> pallet_transaction_payment::FeeDetails<Balance> {
			TransactionPayment::query_fee_details(uxt, len)
		}
		fn query_weight_to_fee(weight: Weight) -> Balance {
			TransactionPayment::weight_to_fee(weight)
		}
		fn query_length_to_fee(length: u32) -> Balance {
			TransactionPayment::length_to_fee(length)
		}
	}

	impl pallet_transaction_payment_rpc_runtime_api::TransactionPaymentCallApi<Block, Balance, RuntimeCall>
		for Runtime
	{
		fn query_call_info(
			call: RuntimeCall,
			len: u32,
		) -> pallet_transaction_payment::RuntimeDispatchInfo<Balance> {
			TransactionPayment::query_call_info(call, len)
		}
		fn query_call_fee_details(
			call: RuntimeCall,
			len: u32,
		) -> pallet_transaction_payment::FeeDetails<Balance> {
			TransactionPayment::query_call_fee_details(call, len)
		}
		fn query_weight_to_fee(weight: Weight) -> Balance {
			TransactionPayment::weight_to_fee(weight)
		}
		fn query_length_to_fee(length: u32) -> Balance {
			TransactionPayment::length_to_fee(length)
		}
	}

	#[cfg(feature = "runtime-benchmarks")]
	impl frame_benchmarking::Benchmark<Block> for Runtime {
		fn benchmark_metadata(extra: bool) -> (
			Vec<frame_benchmarking::BenchmarkList>,
			Vec<frame_support::traits::StorageInfo>,
		) {
			use frame_benchmarking::{baseline, Benchmarking, BenchmarkList};
			use frame_support::traits::StorageInfoTrait;
			use frame_system_benchmarking::Pallet as SystemBench;
			use baseline::Pallet as BaselineBench;

			let mut list = Vec::<BenchmarkList>::new();
			list_benchmarks!(list, extra);

			let storage_info = AllPalletsWithSystem::storage_info();

			(list, storage_info)
		}

		fn dispatch_benchmark(
			config: frame_benchmarking::BenchmarkConfig
		) -> Result<Vec<frame_benchmarking::BenchmarkBatch>, sp_runtime::RuntimeString> {
			use frame_benchmarking::{baseline, Benchmarking, BenchmarkBatch};
			use sp_storage::TrackedStorageKey;
			use frame_system_benchmarking::Pallet as SystemBench;
			use baseline::Pallet as BaselineBench;

			impl frame_system_benchmarking::Config for Runtime {}
			impl baseline::Config for Runtime {}

			use frame_support::traits::WhitelistedStorageKeys;
			let whitelist: Vec<TrackedStorageKey> = AllPalletsWithSystem::whitelisted_storage_keys();

			let mut batches = Vec::<BenchmarkBatch>::new();
			let params = (&config, &whitelist);
			add_benchmarks!(params, batches);

			Ok(batches)
		}
	}

	impl pallet_contracts::ContractsApi<Block, AccountId, Balance, BlockNumber, Hash, EventRecord> for Runtime {
		fn call(
			origin: AccountId,
			dest: AccountId,
			value: Balance,
			gas_limit: Option<Weight>,
			storage_deposit_limit: Option<Balance>,
			input_data: Vec<u8>,
		) -> pallet_contracts::ContractExecResult<Balance, EventRecord> {
			let gas_limit = gas_limit.unwrap_or(BlockWeights::get().max_block);
			Contracts::bare_call(
				origin,
				dest,
				value,
				gas_limit,
				storage_deposit_limit,
				input_data,
				CONTRACTS_DEBUG_OUTPUT,
				pallet_contracts::CollectEvents::UnsafeCollect,
				pallet_contracts::Determinism::Enforced,
			)
		}

		fn instantiate(
			origin: AccountId,
			value: Balance,
			gas_limit: Option<Weight>,
			storage_deposit_limit: Option<Balance>,
			code: pallet_contracts::Code<Hash>,
			data: Vec<u8>,
			salt: Vec<u8>,
		) -> pallet_contracts::ContractInstantiateResult<AccountId, Balance, EventRecord> {
			let gas_limit = gas_limit.unwrap_or(BlockWeights::get().max_block);
			Contracts::bare_instantiate(
				origin,
				value,
				gas_limit,
				storage_deposit_limit,
				code,
				data,
				salt,
				CONTRACTS_DEBUG_OUTPUT,
				pallet_contracts::CollectEvents::UnsafeCollect,
			)
		}

		fn upload_code(
			origin: AccountId,
			code: Vec<u8>,
			storage_deposit_limit: Option<Balance>,
			determinism: pallet_contracts::Determinism,
		) -> pallet_contracts::CodeUploadResult<Hash, Balance> {
			Contracts::bare_upload_code(
				origin,
				code,
				storage_deposit_limit,
				determinism,
			)
		}

		fn get_storage(
			address: AccountId,
			key: Vec<u8>,
		) -> pallet_contracts::GetStorageResult {
			Contracts::get_storage(address, key)
		}
	}

	#[cfg(feature = "try-runtime")]
	impl frame_try_runtime::TryRuntime<Block> for Runtime {
		fn on_runtime_upgrade(checks: frame_try_runtime::UpgradeCheckSelect) -> (Weight, Weight) {
			// NOTE: intentional unwrap: we don't want to propagate the error backwards, and want to
			// have a backtrace here. If any of the pre/post migration checks fail, we shall stop
			// right here and right now.
			let weight = Executive::try_runtime_upgrade(checks).unwrap();
			(weight, BlockWeights::get().max_block)
		}

		fn execute_block(
			block: Block,
			state_root_check: bool,
			signature_check: bool,
			select: frame_try_runtime::TryStateSelect
		) -> Weight {
			// NOTE: intentional unwrap: we don't want to propagate the error backwards, and want to
			// have a backtrace here.
			Executive::try_execute_block(block, state_root_check, signature_check, select).expect("execute-block failed")
		}
	}

	impl sp_genesis_builder::GenesisBuilder<Block> for Runtime {
		fn build_state(config: Vec<u8>) -> sp_genesis_builder::Result {
			build_state::<RuntimeGenesisConfig>(config)
		}

		fn get_preset(id: &Option<sp_genesis_builder::PresetId>) -> Option<Vec<u8>> {
			get_preset::<RuntimeGenesisConfig>(id, |_| None)
		}

		fn preset_names() -> Vec<sp_genesis_builder::PresetId> {
			vec![]
		}
	}
}

/// Some re-exports that the node side code needs to know. Some are useful in this context as well.
///
/// Other types should preferably be private.
// TODO: this should be standardized in some way, see:
// https://github.com/paritytech/substrate/issues/10579#issuecomment-1600537558
pub mod interface {
	use super::Runtime;
	use frame::deps::frame_system;

	pub type Block = super::Block;
	pub use frame::runtime::types_common::OpaqueBlock;
	pub type AccountId = <Runtime as frame_system::Config>::AccountId;
	pub type Nonce = <Runtime as frame_system::Config>::Nonce;
	pub type Hash = <Runtime as frame_system::Config>::Hash;
	pub type Balance = <Runtime as pallet_balances::Config>::Balance;
	pub type MinimumBalance = <Runtime as pallet_balances::Config>::ExistentialDeposit;
}

#[derive(Default)]
pub struct DrandExtension;

impl ChainExtension<Runtime> for DrandExtension {
	
    fn call<E: Ext>(
        &mut self,
        env: Environment<E, InitState>,
    ) -> Result<RetVal, DispatchError>
    where
        <E::T as SysConfig>::AccountId:
            UncheckedFrom<<E::T as SysConfig>::Hash> + AsRef<[u8]>,
    {
		let func_id = env.func_id();
		log::trace!(
			target: "runtime",
			"[ChainExtension]|call|func_id:{:}",
			func_id
		);
        match func_id {	
            1101 => {
                let mut env = env.buf_in_buf_out();
				let prev_block = System::block_number() - 1;
				let rand = Drand::random_at(prev_block);
				env.write(&rand.encode(), false, None).map_err(|_| {
					DispatchError::Other("Failed to write output randomness")
				})?;
				
				Ok(RetVal::Converging(0))
            },
            _ => {
                log::error!("Called an unregistered `func_id`: {:}", func_id);
                Err(DispatchError::Other("Unimplemented func_id"))
            }
        }
    }

    fn enabled() -> bool {
        true
    }
}