Developer UI: Send transaction from an app

.gitignore

@@ -5,4 +5,5 @@ dist
 .vscode
 lerna-debug.log
 yalc.lock
-build
+build
+packages/safe-apps-developer-ui/src/types/contracts/

package.json

@@ -19,13 +19,13 @@
     "lerna": "^4.0.0"
   },
   "devDependencies": {
-    "@typescript-eslint/eslint-plugin": "^4.17.0",
-    "@typescript-eslint/parser": "^4.17.0",
-    "eslint": "7.23.0",
-    "eslint-config-prettier": "^8.1.0",
-    "eslint-plugin-prettier": "^3.3.1",
+    "@typescript-eslint/eslint-plugin": "^4.22.0",
+    "@typescript-eslint/parser": "^4.22.0",
+    "eslint": "7.25.0",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^3.4.0",
     "jest": "26.6.0",
     "ts-jest": "^26.5.3",
-    "typescript": "^4.2.3"
+    "typescript": "^4.2.4"
   }
 }

packages/safe-apps-developer-ui/package.json

@@ -3,32 +3,36 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@gnosis.pm/safe-apps-react-sdk": "2.3.0",
     "@gnosis.pm/safe-apps-sdk": "^2.3.0",
     "@gnosis.pm/safe-contracts": "1.1.1-dev.2",
-    "@material-ui/core": "^4.11.3",
+    "@material-ui/core": "^4.11.4",
     "@material-ui/icons": "^4.11.2",
     "@testing-library/jest-dom": "^5.11.10",
-    "@testing-library/react": "^11.1.0",
-    "@testing-library/user-event": "^13.0.16",
-    "@types/styled-components": "^5.1.9",
-    "@walletconnect/web3-provider": "^1.4.0",
+    "@testing-library/react": "^11.2.6",
+    "@testing-library/user-event": "^13.1.5",
+    "@walletconnect/web3-provider": "^1.4.1",
     "clsx": "^1.1.1",
     "ethereum-blockies-base64": "^1.0.2",
-    "ethers": "^5.0.32",
+    "ethers": "^5.1.4",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-router": "^5.2.0",
     "react-router-dom": "^5.2.0",
     "react-scripts": "4.0.3",
-    "styled-components": "^5.2.1",
+    "react-spring": "^9.1.2",
+    "styled-components": "^5.2.3",
     "web3modal": "1.9.3",
-    "zustand": "^3.3.3"
+    "zustand": "^3.4.2"
   },
   "scripts": {
     "start": "react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test --passWithNoTests",
-    "eject": "react-scripts eject"
+    "eject": "react-scripts eject",
+    "generate-types": "yarn generate-types:safe-contracts",
+    "generate-types:safe-contracts": "typechain --target=ethers-v5 --outDir './src/types/contracts' '../../node_modules/@gnosis.pm/safe-contracts/build/contracts/*.json'",
+    "postinstall": "yarn generate-types"
   },
   "browserslist": {
     "production": [
@@ -43,18 +47,21 @@
     ]
   },
   "devDependencies": {
-    "@types/jest": "^26.0.22",
-    "@types/node": "^14.14.37",
-    "@types/react": "^17.0.3",
+    "@typechain/ethers-v5": "^6.0.5",
+    "@types/jest": "^26.0.23",
+    "@types/node": "^15.0.1",
+    "@types/react": "^17.0.4",
     "@types/react-dom": "^17.0.3",
     "@types/react-router": "^5.1.13",
     "@types/react-router-dom": "^5.1.7",
+    "@types/styled-components": "^5.1.9",
     "eslint-config-react-app": "^6.0.0",
-    "eslint-plugin-flowtype": "^5.4.0",
+    "eslint-plugin-flowtype": "^5.7.2",
     "eslint-plugin-import": "^2.22.0",
     "eslint-plugin-jsx-a11y": "^6.3.1",
-    "eslint-plugin-react": "^7.23.1",
+    "eslint-plugin-react": "^7.23.2",
     "eslint-plugin-react-hooks": "^4.2.0",
+    "typechain": "^4.0.3",
     "web-vitals": "^1.1.1"
   }
 }

packages/safe-apps-developer-ui/src/api/eth.ts

@@ -0,0 +1,9 @@
+import { ethers } from 'ethers';
+
+const getEthBalance = async (provider: ethers.providers.BaseProvider, address: string): Promise<ethers.BigNumber> => {
+  const balance = provider.getBalance(address);
+
+  return balance;
+};
+
+export { getEthBalance };

packages/safe-apps-developer-ui/src/api/safe.ts

@@ -0,0 +1,11 @@
+import { ethers } from 'ethers';
+import { getSafeContract } from './safeContracts';
+
+const getSafeNonce = async (signer: ethers.providers.JsonRpcSigner, safeAddress: string): Promise<ethers.BigNumber> => {
+  const safe = getSafeContract(safeAddress, signer);
+  const nonce = await safe.nonce();
+
+  return nonce;
+};
+
+export { getSafeNonce };

packages/safe-apps-developer-ui/src/api/safeContracts.ts

@@ -1,34 +1,54 @@
 import GnosisSafeSol from '@gnosis.pm/safe-contracts/build/contracts/GnosisSafe.json';
+import MultiSendSol from '@gnosis.pm/safe-contracts/build/contracts/MultiSend.json';
 import ProxyFactorySol from '@gnosis.pm/safe-contracts/build/contracts/GnosisSafeProxyFactory.json';
 import FallbackHandlerSol from '@gnosis.pm/safe-contracts/build/contracts/FallbackManager.json';
 import { JsonRpcSigner } from '@ethersproject/providers';
 import { Contract, ContractFactory } from 'ethers';
+import { GnosisSafe, GnosisSafeProxyFactory, MultiSend, MasterCopy, FallbackManager } from 'src/types/contracts';
 
-const getProxyFactoryContract = (address: string, signer: JsonRpcSigner): Contract =>
-  new Contract(address, ProxyFactorySol.abi, signer);
+const getProxyFactoryContract = (address: string, signer: JsonRpcSigner): GnosisSafeProxyFactory =>
+  new Contract(address, ProxyFactorySol.abi, signer) as GnosisSafeProxyFactory;
 
-const getSafeContract = (address: string, signer: JsonRpcSigner): Contract =>
-  new Contract(address, GnosisSafeSol.abi, signer);
+const getSafeContract = (address: string, signer: JsonRpcSigner): GnosisSafe =>
+  new Contract(address, GnosisSafeSol.abi, signer) as GnosisSafe;
 
-const deployMasterCopy = async (signer: JsonRpcSigner): Promise<Contract> => {
+const getMultiSendContract = (address: string, signer: JsonRpcSigner): MultiSend =>
+  new Contract(address, MultiSendSol.abi, signer) as MultiSend;
+
+const deployMasterCopy = async (signer: JsonRpcSigner): Promise<MasterCopy> => {
   const factory = new ContractFactory(GnosisSafeSol.abi, GnosisSafeSol.bytecode, signer);
   const masterCopy = await factory.deploy();
 
-  return masterCopy;
+  return masterCopy as MasterCopy;
 };
 
-const deployProxyFactory = async (signer: JsonRpcSigner): Promise<Contract> => {
+const deployProxyFactory = async (signer: JsonRpcSigner): Promise<GnosisSafeProxyFactory> => {
   const factory = new ContractFactory(ProxyFactorySol.abi, ProxyFactorySol.bytecode, signer);
   const proxyFactory = await factory.deploy();
 
-  return proxyFactory;
+  return proxyFactory as GnosisSafeProxyFactory;
 };
 
-const deployFallbackHandler = async (signer: JsonRpcSigner): Promise<Contract> => {
+const deployFallbackHandler = async (signer: JsonRpcSigner): Promise<FallbackManager> => {
   const factory = new ContractFactory(FallbackHandlerSol.abi, FallbackHandlerSol.bytecode, signer);
   const fallbackHandler = await factory.deploy();
 
-  return fallbackHandler;
+  return fallbackHandler as FallbackManager;
 };
 
-export { deployProxyFactory, deployFallbackHandler, deployMasterCopy, getSafeContract, getProxyFactoryContract };
+const deployMultiSend = async (signer: JsonRpcSigner): Promise<MultiSend> => {
+  const factory = new ContractFactory(MultiSendSol.abi, MultiSendSol.bytecode, signer);
+  const multiSend = await factory.deploy();
+
+  return multiSend as MultiSend;
+};
+
+export {
+  deployProxyFactory,
+  deployFallbackHandler,
+  deployMasterCopy,
+  getSafeContract,
+  getProxyFactoryContract,
+  getMultiSendContract,
+  deployMultiSend,
+};

packages/safe-apps-developer-ui/src/api/signatures.ts

@@ -0,0 +1,10 @@
+import { EMPTY_DATA } from 'src/utils/strings';
+
+const getPreValidatedSignature = (from: string, startStr: string = EMPTY_DATA): string => {
+  return `${startStr}000000000000000000000000${from.replace(
+    EMPTY_DATA,
+    '',
+  )}000000000000000000000000000000000000000000000000000000000000000001`;
+};
+
+export { getPreValidatedSignature };

packages/safe-apps-developer-ui/src/api/transactions.ts

@@ -0,0 +1,131 @@
+import { ZERO_ADDRESS } from 'src/utils/strings';
+import { SignedProposedTx } from './../types/transaction';
+import { Transaction } from '@gnosis.pm/safe-apps-sdk';
+import { ethers } from 'ethers';
+import { getSafeContract, getMultiSendContract } from 'src/api/safeContracts';
+import { ProposedTx, CreateTransactionArgs } from 'src/types/transaction';
+import { getPreValidatedSignature } from './signatures';
+import { getSafeNonce } from './safe';
+
+const CALL = 0;
+const DELEGATE_CALL = 1;
+
+const executeTransaction = async (
+  signer: ethers.providers.JsonRpcSigner,
+  safeAddress: string,
+  { baseGas, data, gasPrice, gasToken, operation, refundReceiver, safeTxGas, to, valueInWei, sigs }: SignedProposedTx,
+): Promise<ethers.ContractTransaction> => {
+  const safeInstance = getSafeContract(safeAddress, signer);
+  const execution = await safeInstance.execTransaction(
+    to,
+    valueInWei,
+    data,
+    operation,
+    safeTxGas,
+    baseGas,
+    gasPrice,
+    gasToken,
+    refundReceiver,
+    sigs,
+  );
+
+  return execution;
+};
+
+const getTransactionHash = async (
+  signer: ethers.providers.JsonRpcSigner,
+  safeAddress: string,
+  {
+    baseGas,
+    data,
+    gasPrice,
+    gasToken,
+    nonce,
+    operation,
+    refundReceiver,
+    safeTxGas,
+    to,
+    valueInWei,
+  }: ProposedTx & { nonce: ethers.BigNumberish },
+): Promise<string> => {
+  const safeInstance = getSafeContract(safeAddress, signer);
+
+  const txHash = await safeInstance.getTransactionHash(
+    to,
+    valueInWei,
+    data,
+    operation,
+    safeTxGas,
+    baseGas,
+    gasPrice,
+    gasToken,
+    refundReceiver,
+    nonce,
+  );
+
+  return txHash;
+};
+
+const createTransaction = async (
+  signer: ethers.providers.JsonRpcSigner,
+  safeAddress: string,
+  sender: string,
+  {
+    baseGas = 0,
+    data,
+    gasPrice = 0,
+    gasToken = ZERO_ADDRESS,
+    operation = CALL,
+    refundReceiver = ZERO_ADDRESS,
+    safeTxGas = 0,
+    to,
+    valueInWei,
+  }: CreateTransactionArgs,
+): Promise<{ safeTxHash: string; tx: ethers.ContractTransaction }> => {
+  const senderSignature = getPreValidatedSignature(sender);
+  const safeNonce = await getSafeNonce(signer, safeAddress);
+
+  const tx = {
+    baseGas,
+    data,
+    gasPrice,
+    gasToken,
+    operation,
+    refundReceiver,
+    safeTxGas,
+    nonce: safeNonce,
+    to,
+    valueInWei,
+    sigs: senderSignature,
+  };
+
+  const safeTxHash = await getTransactionHash(signer, safeAddress, tx);
+  const executedTx = await executeTransaction(signer, safeAddress, tx);
+
+  return { safeTxHash, tx: executedTx };
+};
+
+const encodeMultiSendCall = (
+  signer: ethers.providers.JsonRpcSigner,
+  multiSendAddress: string,
+  txs: Transaction[],
+): string => {
+  const multiSend = getMultiSendContract(multiSendAddress, signer);
+
+  const joinedTxs = txs
+    .map((tx) => {
+      const data = ethers.utils.arrayify(tx.data);
+      const encoded = ethers.utils.solidityPack(
+        ['uint8', 'address', 'uint256', 'uint256', 'bytes'],
+        [0, tx.to, tx.value, data.length, data],
+      );
+      return encoded.slice(2);
+    })
+    .join('');
+
+  const encodedMultiSendCallData = multiSend.interface.encodeFunctionData('multiSend', [`0x${joinedTxs}`]);
+
+  return encodedMultiSendCallData;
+};
+
+export { CALL, DELEGATE_CALL, encodeMultiSendCall, getTransactionHash, createTransaction };

packages/safe-apps-developer-ui/src/components/BalanceBox.tsx

@@ -0,0 +1,30 @@
+import React from 'react';
+import styled from 'styled-components';
+import { secondaryBackground, xs } from 'src/styles/variables';
+
+const Box = styled.p`
+  background: ${secondaryBackground};
+  padding: ${xs};
+  border-radius: 5px;
+  width: fit-content;
+
+  span {
+    font-weight: bold;
+  }
+`;
+
+type Props = {
+  balance: string;
+  symbol?: string;
+};
+
+const BalanceBox = ({ balance, symbol = 'ETH' }: Props): React.ReactElement => (
+  <Box>
+    Balance:{' '}
+    <span>
+      {balance} {symbol}
+    </span>
+  </Box>
+);
+
+export { BalanceBox };