@prathammahajan/blockchain-integration/examples/smart-contracts.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 smartContractsExample() {
  try {
    // Initialize blockchain engine with smart contract support
    const blockchain = new BlockchainEngine({
      networks: {
        ethereum: {
          enabled: true,
          rpc: 'https://mainnet.infura.io',
          chainId: 1
        }
      },
      wallet: {
        enabled: true,
        encryption: true
      },
      smartContracts: {
        enabled: true,
        deployment: true,
        interaction: true
      }
    });

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

    console.log('✅ Blockchain Engine initialized with smart contract support');

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

    // Deploy a smart contract
    const contractCode = `
      pragma solidity ^0.8.0;
      contract SimpleStorage {
          uint256 public storedData;
          
          function set(uint256 x) public {
              storedData = x;
          }
          
          function get() public view returns (uint256) {
              return storedData;
          }
      }
    `;
    
    const deployResult = await blockchain.deployContract(contractCode, []);
    console.log('✅ Smart contract deployed:', deployResult);

    // Call contract method
    const callResult = await blockchain.callContract(deployResult.contractAddress, 'set', [42]);
    console.log('✅ Contract method called:', callResult);

    // Get contract state
    const getResult = await blockchain.callContract(deployResult.contractAddress, 'get', []);
    console.log('✅ Contract state retrieved:', getResult);

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

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

// Run the example
smartContractsExample();