update check ETH USDT USDC balance function

src/config/database.js

@@ -110,12 +110,23 @@ const initDb = async () => {
         address TEXT NOT NULL,
         derivation_path TEXT NOT NULL,
         mnemonic TEXT NOT NULL,
+        balance REAL DEFAULT 0, -- Добавлена колонка для хранения баланса
         created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
         FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE,
         UNIQUE(user_id, wallet_type)
       )
     `);
 
+    // Check if balance column exists in crypto_wallets table
+    const balanceExists = await checkColumnExists('crypto_wallets', 'balance');
+    if (!balanceExists) {
+      await db.runAsync(`
+        ALTER TABLE crypto_wallets
+        ADD COLUMN balance REAL DEFAULT 0
+      `);
+      console.log('Column balance added to crypto_wallets table');
+    }
+
     // Create transactions table
     await db.runAsync(`
       CREATE TABLE IF NOT EXISTS transactions (