@prathammahajan/blockchain-integration/examples/transaction-monitoring.js

🚀 Comprehensive blockchain integration suite with multi-chain cryptocurrency support, NFT marketplace, smart contracts, DeFi protocols, and enterprise-grade wallet management

const BlockchainEngine = require('../src/index');

async function transactionMonitoringExample() {
  try {
    // Initialize blockchain engine
    const blockchain = new BlockchainEngine({
      networks: {
        ethereum: {
          enabled: true,
          rpc: 'https://mainnet.infura.io',
          chainId: 1
        }
      },
      wallet: {
        enabled: true,
        encryption: true
      }
    });

    // Wait for initialization
    await new Promise(resolve => {
      blockchain.on('initialized', resolve);
    });

    console.log('✅ Blockchain Engine initialized');

    // Create a wallet
    const wallet = await blockchain.createWallet('hd');
    console.log('✅ Wallet created:', wallet.address);

    // Set up transaction monitoring
    blockchain.on('transactionSent', (data) => {
      console.log('📤 Transaction sent:', data.txHash);
    });

    blockchain.on('transactionUpdate', (data) => {
      console.log('📊 Transaction update:', data.txHash, data.status);
    });

    blockchain.on('transactionConfirmed', (data) => {
      console.log('✅ Transaction confirmed:', data.txHash);
    });

    blockchain.on('transactionFailed', (data) => {
      console.log('❌ Transaction failed:', data.txHash, data.error);
    });

    // Send a transaction
    const txResult = await blockchain.sendTransaction(
      wallet.walletId,
      '0xrecipient',
      '1.0',
      'ethereum'
    );
    console.log('✅ Transaction sent:', txResult.txHash);

    // Monitor transaction status
    const status = await blockchain.getTransactionStatus(txResult.txHash, 'ethereum');
    console.log('✅ Transaction status:', status);

    // Get transaction history
    const history = await blockchain.getTransactionHistory(wallet.walletId, 'ethereum');
    console.log('✅ Transaction history:', history);

    // Shutdown
    await blockchain.shutdown();
    console.log('✅ Blockchain Engine shutdown');

  } catch (error) {
    console.error('❌ Error:', error.message);
  }
}

// Run the example
transactionMonitoringExample();