ваше сообщение коммита

backend/services/tokenBalanceService.js

@@ -0,0 +1,78 @@
+/**
+ * Сервис получения балансов токенов пользователя из БД и RPC
+ */
+
+const { ethers } = require('ethers');
+const db = require('../db');
+const logger = require('../utils/logger');
+
+async function getUserTokenBalances(address) {
+  if (!address) return [];
+
+  // Получаем ключ шифрования
+  const fs = require('fs');
+  const path = require('path');
+  let encryptionKey = 'default-key';
+
+  try {
+    const keyPath = path.join(__dirname, '../ssl/keys/full_db_encryption.key');
+    if (fs.existsSync(keyPath)) {
+      encryptionKey = fs.readFileSync(keyPath, 'utf8').trim();
+    }
+  } catch (keyError) {
+    console.error('Error reading encryption key:', keyError);
+  }
+
+  // Получаем токены и RPC с расшифровкой
+  const tokensResult = await db.getQuery()(
+    'SELECT id, min_balance, created_at, updated_at, decrypt_text(name_encrypted, $1) as name, decrypt_text(address_encrypted, $1) as address, decrypt_text(network_encrypted, $1) as network FROM auth_tokens',
+    [encryptionKey]
+  );
+  const tokens = tokensResult.rows;
+
+  const rpcProvidersResult = await db.getQuery()(
+    'SELECT id, chain_id, created_at, updated_at, decrypt_text(network_id_encrypted, $1) as network_id, decrypt_text(rpc_url_encrypted, $1) as rpc_url FROM rpc_providers',
+    [encryptionKey]
+  );
+  const rpcProviders = rpcProvidersResult.rows;
+  const rpcMap = {};
+  for (const rpc of rpcProviders) {
+    rpcMap[rpc.network_id] = rpc.rpc_url;
+  }
+
+  const ERC20_ABI = ['function balanceOf(address owner) view returns (uint256)'];
+  const results = [];
+
+  for (const token of tokens) {
+    const rpcUrl = rpcMap[token.network];
+    if (!rpcUrl) continue;
+    const provider = new ethers.JsonRpcProvider(rpcUrl);
+    const tokenContract = new ethers.Contract(token.address, ERC20_ABI, provider);
+    let balance = '0';
+    try {
+      const rawBalance = await tokenContract.balanceOf(address);
+      balance = ethers.formatUnits(rawBalance, 18);
+      if (!balance || isNaN(Number(balance))) balance = '0';
+    } catch (e) {
+      logger.error(
+        `[tokenBalanceService] Ошибка получения баланса для ${token.name} (${token.address}) в сети ${token.network}:`,
+        e
+      );
+      balance = '0';
+    }
+    results.push({
+      network: token.network,
+      tokenAddress: token.address,
+      tokenName: token.name,
+      symbol: token.symbol || '',
+      balance,
+      minBalance: token.min_balance,
+    });
+  }
+
+  return results;
+}
+
+module.exports = { getUserTokenBalances };
+
+