Add Eth-wallets support

.gitignore

@@ -7,6 +7,7 @@
 **/node_modules/
 **/build/
 **/yarn.lock
+**/pnpm-lock.yaml
 **/.tsimp
 
 # Frontend

frontend/package.json

@@ -12,22 +12,27 @@
     "lint": "next lint"
   },
   "dependencies": {
-    "@near-wallet-selector/core": "^8.9.11",
-    "@near-wallet-selector/here-wallet": "^8.9.11",
-    "@near-wallet-selector/modal-ui": "^8.9.11",
-    "@near-wallet-selector/my-near-wallet": "^8.9.11",
+    "@near-js/providers": "^1.0.0",
+    "@near-wallet-selector/core": "^8.9.13",
+    "@near-wallet-selector/ethereum-wallets": "^8.9.13",
+    "@near-wallet-selector/here-wallet": "^8.9.13",
+    "@near-wallet-selector/modal-ui": "^8.9.13",
+    "@near-wallet-selector/my-near-wallet": "^8.9.13",
+    "@web3modal/wagmi": "^5.1.9",
     "bootstrap": "^5",
     "bootstrap-icons": "^1.11.3",
-    "near-api-js": "^4.0.3",
-    "next": "14.2.3",
+    "near-api-js": "^5",
+    "next": "14.2.13",
     "react": "^18",
-    "react-dom": "^18"
+    "wagmi": "^2.12.14"
   },
   "resolutions": {
     "near-api-js": "4.0.3"
   },
   "devDependencies": {
-    "eslint": "^8",
-    "eslint-config-next": "14.2.3"
+    "encoding": "^0.1.13",
+    "eslint": "^9",
+    "eslint-config-next": "14.2.13",
+    "pino-pretty": "^11.2.2"
   }
 }

frontend/src/config.js

@@ -3,5 +3,22 @@ const contractPerNetwork = {
   testnet: 'hello.near-examples.testnet',
 };
 
+// Chains for EVM Wallets 
+const evmWalletChains = {
+  mainnet: {
+    chainId: 397,
+    name: "Near Mainnet",
+    explorer: "https://eth-explorer.near.org",
+    rpc: "https://eth-rpc.mainnet.near.org",
+  },
+  testnet: {
+    chainId: 398,
+    name: "Near Testnet",
+    explorer: "https://eth-explorer-testnet.near.org",
+    rpc: "https://eth-rpc.testnet.near.org",
+  },
+}
+
 export const NetworkId = 'testnet';
-export const HelloNearContract = contractPerNetwork[NetworkId];
+export const HelloNearContract = contractPerNetwork[NetworkId];
+export const EVMWalletChain = evmWalletChains[NetworkId];

frontend/src/pages/_app.js

@@ -5,9 +5,9 @@ import { NearContext } from '@/context';
 import { Navigation } from '@/components/navigation';
 
 import { Wallet } from '@/wallets/near';
-import { NetworkId, HelloNearContract } from '@/config';
+import { NetworkId } from '@/config';
 
-const wallet = new Wallet({ createAccessKeyFor: HelloNearContract, networkId: NetworkId });
+const wallet = new Wallet({ networkId: NetworkId });
 
 export default function MyApp({ Component, pageProps }) {
   const [signedAccountId, setSignedAccountId] = useState('');

frontend/src/pages/hello-near/index.js

@@ -30,9 +30,11 @@ export default function HelloNear() {
 
   const saveGreeting = async () => {
     setShowSpinner(true);
-    await wallet.callMethod({ contractId: CONTRACT, method: 'set_greeting', args: { greeting: newGreeting } });
-    const greeting = await wallet.viewMethod({ contractId: CONTRACT, method: 'get_greeting' });
-    setGreeting(greeting);
+    try {
+      await wallet.callMethod({ contractId: CONTRACT, method: 'set_greeting', args: { greeting: newGreeting } });
+      const greeting = await wallet.viewMethod({ contractId: CONTRACT, method: 'get_greeting' });
+      setGreeting(greeting);
+    } catch (e) { console.error(e); }
     setShowSpinner(false);
   };
 

frontend/src/wallets/near.js

@@ -9,6 +9,9 @@ import { setupWalletSelector } from '@near-wallet-selector/core';
 import { setupHereWallet } from '@near-wallet-selector/here-wallet';
 import { setupMyNearWallet } from '@near-wallet-selector/my-near-wallet';
 
+import { wagmiConfig, web3Modal } from '@/wallets/web3modal';
+import { setupEthereumWallets } from "@near-wallet-selector/ethereum-wallets";
+
 const THIRTY_TGAS = '30000000000000';
 const NO_DEPOSIT = '0';
 
@@ -17,9 +20,9 @@ export class Wallet {
    * @constructor
    * @param {Object} options - the options for the wallet
    * @param {string} options.networkId - the network id to connect to
-   * @param {string} options.createAccessKeyFor - the contract to create an access key for
+   * @param {string} options.createAccessKeyFor - (optional) create a function call key for a contract
    * @example
-   * const wallet = new Wallet({ networkId: 'testnet', createAccessKeyFor: 'contractId' });
+   * const wallet = new Wallet({ networkId: 'testnet'});
    * wallet.startUp((signedAccountId) => console.log(signedAccountId));
    */
   constructor({ networkId = 'testnet', createAccessKeyFor = undefined }) {
@@ -33,9 +36,14 @@ export class Wallet {
    * @returns {Promise<string>} - the accountId of the signed-in user 
    */
   startUp = async (accountChangeHook) => {
+    const alwaysOnboardDuringSignIn = true;
     this.selector = setupWalletSelector({
       network: this.networkId,
-      modules: [setupMyNearWallet(), setupHereWallet()]
+      modules: [
+        setupMyNearWallet(),
+        setupHereWallet(),
+        setupEthereumWallets({ wagmiConfig, web3Modal, alwaysOnboardDuringSignIn: true }),
+      ]
     });
 
     const walletSelector = await this.selector;

frontend/src/wallets/web3modal.js

@@ -0,0 +1,45 @@
+import { NetworkId, EVMWalletChain } from '@/config';
+import { reconnect, http, createConfig } from "@wagmi/core";
+import { walletConnect, injected } from "@wagmi/connectors";
+import { createWeb3Modal } from "@web3modal/wagmi";
+
+// Config
+const near = {
+  id: EVMWalletChain.chainId,
+  name: EVMWalletChain.name,
+  nativeCurrency: {
+    decimals: 18,
+    name: "NEAR",
+    symbol: "NEAR",
+  },
+  rpcUrls: {
+    default: { http: [EVMWalletChain.rpc] },
+    public: { http: [EVMWalletChain.rpc] },
+  },
+  blockExplorers: {
+    default: {
+      name: "NEAR Explorer",
+      url: EVMWalletChain.explorer,
+    },
+  },
+  testnet: NetworkId === "testnet",
+};
+
+// Get projectId from https://cloud.reown.com
+// check https://docs.reown.com/cloud/relay for more details
+const projectId = 'YOUR_PROJECT_ID';
+
+export const wagmiConfig = createConfig({
+  chains: [near],
+  transports: { [near.id]: http() },
+  connectors: [
+    walletConnect({ projectId, showQrModal: false }),
+    injected({ shimDisconnect: true }),
+  ],
+});
+
+// Preserve login state on page reload
+reconnect(wagmiConfig);
+
+// Modal for login
+export const web3Modal = createWeb3Modal({ wagmiConfig, projectId });