Feature #21: Allow specifying safe tx gas

README.md

@@ -78,7 +78,7 @@ You can remove listeners by calling `appsSdk.removeListeners()`.
 
 ### Sending TXs
 
-Sending a TX through the Safe Multisig is as simple as invoking `sendTransaction` method with an array of TXs.
+Sending a TX through the Safe Multisig is as simple as invoking `sendTransactionsWithParams` method with an array of TXs.
 
 ```js
 // Create a web3 instance
@@ -98,12 +98,16 @@ const txs = [
   },
 ];
 
+const params = {
+  safeTxGas: 500000,
+};
+
 // Send to Safe-multisig
-const message = appsSdk.sendTransactions(txs);
+const message = appsSdk.sendTransactionsWithParams(txs, params);
 console.log(message.requestId);
 ```
 
-`sendTransactions` returns a message containing the requestId. You can use it to map transaction calls with `onTransactionConfirmation` events.
+`sendTransactionsWithParams` returns a message containing the requestId. You can use it to map transaction calls with `onTransactionConfirmation` events.
 
 > Note: `value` accepts a number or a string as a decimal or hex number.
 

package.json

@@ -23,22 +23,22 @@
   "author": "Gnosis (https://gnosis.pm)",
   "license": "MIT",
   "devDependencies": {
-    "@types/jest": "^26.0.13",
-    "@types/node": "^14.6.4",
-    "@typescript-eslint/eslint-plugin": "^4.1.0",
-    "@typescript-eslint/parser": "^4.1.0",
-    "eslint": "^7.8.1",
-    "eslint-config-prettier": "^6.11.0",
+    "@types/jest": "^26.0.14",
+    "@types/node": "^14.11.5",
+    "@typescript-eslint/eslint-plugin": "^4.4.0",
+    "@typescript-eslint/parser": "^4.4.0",
+    "eslint": "^7.10.0",
+    "eslint-config-prettier": "^6.12.0",
     "eslint-plugin-prettier": "^3.1.4",
     "husky": "^4.3.0",
-    "jest": "^26.4.2",
-    "lint-staged": "^10.3.0",
-    "prettier": "^2.1.1",
+    "jest": "^26.5.2",
+    "lint-staged": "^10.4.0",
+    "prettier": "^2.1.2",
     "rimraf": "^3.0.2",
-    "ts-jest": "^26.3.0",
+    "ts-jest": "^26.4.1",
     "tslint": "^6.1.3",
     "tslint-config-prettier": "^1.18.0",
-    "typescript": "^4.0.2"
+    "typescript": "^4.0.3"
   },
   "husky": {
     "hooks": {

src/index.test.ts

@@ -1,7 +1,7 @@
-import initSdk, { SdkInstance } from './index';
+import initSdk, { SdkInstance, SEND_TRANSACTIONS_DEPRECATION_MSG } from './index';
 import { SDK_MESSAGES } from './messageIds';
 
-describe('safe app sdk', () => {
+describe('Safe apps SDK', () => {
   let sdkInstance: SdkInstance;
 
   describe('initSdk', () => {
@@ -16,7 +16,18 @@ describe('safe app sdk', () => {
     });
   });
 
-  describe('sendTransaction', () => {
+  describe('sendTransactions', () => {
+    beforeEach(() => {
+      jest.spyOn(console, 'warn').mockImplementation(() => ({}));
+    });
+
+    test('Should display a deprecation message', () => {
+      const txs = [{ to: 'address', value: '0', data: '0x' }];
+      sdkInstance.sendTransactions(txs);
+
+      expect(console.warn).toHaveBeenCalledWith(SEND_TRANSACTIONS_DEPRECATION_MSG);
+    });
+
     test('Should throw an error when passing an empty array', () => {
       expect(() => {
         sdkInstance.sendTransactions([]);
@@ -39,4 +50,41 @@ describe('safe app sdk', () => {
       expect(request.data).toEqual(txs);
     });
   });
+
+  describe('sendTransactionsWithParams', () => {
+    test('Should throw an error when passing an empty array', () => {
+      expect(() => {
+        sdkInstance.sendTransactionsWithParams([]);
+      }).toThrow();
+    });
+
+    test('Should call window.parent.postMessage with a requestId when passing array of TXs', () => {
+      const requestId = '1000';
+      const spy = jest.spyOn(window.parent, 'postMessage');
+      const txs = [{ to: 'address', value: '0', data: '0x' }];
+      sdkInstance.sendTransactionsWithParams(txs, undefined, requestId);
+      expect(spy).toHaveBeenCalledWith(
+        { messageId: SDK_MESSAGES.SEND_TRANSACTIONS_V2, data: { txs, params: undefined }, requestId },
+        '*',
+      );
+    });
+
+    test('Should return a message containing requestId', () => {
+      const txs = [{ to: 'address', value: '0', data: '0x' }];
+      const request = sdkInstance.sendTransactionsWithParams(txs);
+
+      expect(typeof request.requestId).toBe('number');
+      expect(request.data).toEqual({ txs });
+    });
+
+    test('Should include passed safeTxGas and requestId params to a message body', () => {
+      const txs = [{ to: 'address', value: '0', data: '0x' }];
+      const requestId = 1234;
+      const params = { safeTxGas: 5000 };
+      const request = sdkInstance.sendTransactionsWithParams(txs, params, requestId);
+
+      expect(request.requestId).toBe(requestId);
+      expect(request.data).toEqual({ txs, params });
+    });
+  });
 });

src/index.ts

@@ -10,6 +10,7 @@ import {
   SentSDKMessage,
   RequestId,
   InterfaceMessageToPayload,
+  SendTransactionParams,
 } from './types';
 import { INTERFACE_MESSAGES, SDK_MESSAGES } from './messageIds';
 import { txs as txsMethods, setTxServiceUrl } from './txs';
@@ -19,6 +20,10 @@ const config: {
   listeners?: SafeListeners;
 } = {};
 
+export const SEND_TRANSACTIONS_DEPRECATION_MSG = `sendTransactions will be deprecated in the next major release. Please use sendTransactionsWithParams method instead.
+  Check the docs at https://github.com/gnosis/safe-apps-sdk
+`;
+
 const _logMessageFromSafe = (origin: string, messageId: InterfaceMessageIds): void => {
   console.info(`SafeConnector: A message with id ${messageId} was received from origin ${origin}.`);
 };
@@ -155,6 +160,7 @@ function removeListeners(): void {
  * @param txs
  */
 function sendTransactions(txs: Transaction[], requestId?: RequestId): SentSDKMessage<'SEND_TRANSACTIONS'> {
+  console.warn(SEND_TRANSACTIONS_DEPRECATION_MSG);
   if (!txs || !txs.length) {
     throw new Error('sendTransactions: No transactions were passed');
   }
@@ -164,6 +170,29 @@ function sendTransactions(txs: Transaction[], requestId?: RequestId): SentSDKMes
   return message;
 }
 
+/**
+ * Request Safe app to send transactions
+ * @param txs
+ */
+function sendTransactionsWithParams(
+  txs: Transaction[],
+  params?: SendTransactionParams,
+  requestId?: RequestId,
+): SentSDKMessage<'SEND_TRANSACTIONS_V2'> {
+  if (!txs || !txs.length) {
+    throw new Error('sendTransactions: No transactions were passed');
+  }
+
+  const messagePayload = {
+    txs,
+    params,
+  };
+
+  const message = _sendMessageToParent(SDK_MESSAGES.SEND_TRANSACTIONS_V2, messagePayload, requestId);
+
+  return message;
+}
+
 /**
  * Sets Safe-app url that will render the third-party app.
  * @param parentUrl
@@ -176,7 +205,7 @@ function initSdk(safeAppUrlsRegExp: RegExp[] = []): SdkInstance {
   ];
   sendInitializationMessage();
 
-  return { addListeners, removeListeners, sendTransactions, txs: txsMethods };
+  return { addListeners, removeListeners, sendTransactions, sendTransactionsWithParams, txs: txsMethods };
 }
 
 export default initSdk;

src/messageIds.ts

@@ -8,4 +8,5 @@ export const INTERFACE_MESSAGES = {
 export const SDK_MESSAGES = {
   SAFE_APP_SDK_INITIALIZED: 'SAFE_APP_SDK_INITIALIZED',
   SEND_TRANSACTIONS: 'SEND_TRANSACTIONS',
+  SEND_TRANSACTIONS_V2: 'SEND_TRANSACTIONS_V2',
 } as const;

src/types.ts

@@ -18,10 +18,19 @@ export interface Transaction {
 
 export type RequestId = number | string;
 
+export interface SendTransactionParams {
+  safeTxGas?: number;
+}
+
 export interface SdkInstance {
   addListeners: (listeners: SafeListeners) => void;
   removeListeners: () => void;
   sendTransactions: (txs: Transaction[], requestId?: RequestId) => SentSDKMessage<'SEND_TRANSACTIONS'>;
+  sendTransactionsWithParams: (
+    txs: Transaction[],
+    params?: SendTransactionParams,
+    requestId?: RequestId,
+  ) => SentSDKMessage<'SEND_TRANSACTIONS_V2'>;
   txs: typeof txs;
 }
 
@@ -59,6 +68,10 @@ export interface InterfaceMessageEvent extends MessageEvent {
 export interface SDKMessageToPayload {
   [SDK_MESSAGES.SAFE_APP_SDK_INITIALIZED]: undefined;
   [SDK_MESSAGES.SEND_TRANSACTIONS]: Transaction[];
+  [SDK_MESSAGES.SEND_TRANSACTIONS_V2]: {
+    txs: Transaction[];
+    params?: SendTransactionParams;
+  };
 }
 
 export type SDKMessageIds = keyof typeof SDK_MESSAGES;