Create walletBackup.js

src/wallet/walletBackup.js

@@ -0,0 +1,72 @@
+// walletBackup.js
+
+import { ethers } from 'ethers';
+import fs from 'fs';
+import path from 'path';
+
+class WalletBackup {
+    constructor() {
+        this.walletFilePath = path.join(__dirname, 'walletBackup.json');
+    }
+
+    // Create a new wallet and generate a mnemonic phrase
+    createWallet() {
+        const wallet = ethers.Wallet.createRandom();
+        const mnemonic = wallet.mnemonic.phrase;
+        const privateKey = wallet.privateKey;
+
+        // Save the wallet backup
+        this.saveBackup(mnemonic, privateKey);
+        console.log('Wallet created and backed up successfully.');
+        return { mnemonic, privateKey };
+    }
+
+    // Save wallet backup to a file
+    saveBackup(mnemonic, privateKey) {
+        const backupData = {
+            mnemonic,
+            privateKey,
+            timestamp: new Date().toISOString()
+        };
+        fs.writeFileSync(this.walletFilePath, JSON.stringify(backupData, null, 2));
+    }
+
+    // Recover wallet from mnemonic phrase
+    recoverWallet(mnemonic) {
+        const wallet = ethers.Wallet.fromMnemonic(mnemonic);
+        console.log('Wallet recovered successfully.');
+        return wallet;
+    }
+
+    // Load wallet backup from file
+    loadBackup() {
+        if (fs.existsSync(this.walletFilePath)) {
+            const backupData = JSON.parse(fs.readFileSync(this.walletFilePath));
+            return backupData;
+        } else {
+            throw new Error('No wallet backup found.');
+        }
+    }
+
+    // Example usage
+    exampleUsage() {
+        // Create a new wallet
+        const { mnemonic, privateKey } = this.createWallet();
+        console.log('Mnemonic:', mnemonic);
+        console.log('Private Key:', privateKey);
+
+        // Load backup
+        const backup = this.loadBackup();
+        console.log('Loaded Backup:', backup);
+
+        // Recover wallet
+        const recoveredWallet = this.recoverWallet(backup.mnemonic);
+        console.log('Recovered Wallet Address:', recoveredWallet.address);
+    }
+}
+
+// Example usage
+const walletBackup = new WalletBackup();
+walletBackup.exampleUsage();
+
+export default WalletBackup;