// deploy.js - Script to deploy the MorphGuard Verification smart contract
const Web3 = require('web3');
const fs = require('fs');
const path = require('path');

// Connect to local Ethereum node
const web3 = new Web3('http://localhost:8545');

async function deploy() {
  try {
    console.log('Connected to Ethereum node:', await web3.eth.getNodeInfo());
    
    // Get accounts
    const accounts = await web3.eth.getAccounts();
    const deployer = accounts[0]; // Use the first account for deployment
    
    console.log('Deploying from account:', deployer);
    console.log('Account balance:', web3.utils.fromWei(await web3.eth.getBalance(deployer), 'ether'), 'ETH');
    
    // Read contract source and compile
    const contractPath = path.join(__dirname, 'SmartContract.sol');
    const contractSource = fs.readFileSync(contractPath, 'utf8');
    
    // For simplicity, in a real scenario you would use solc for compilation
    // Here we'll assume you've already compiled the contract using Remix or Truffle
    // and have the ABI and bytecode
    
    // Read compiled contract data
    const compiledContract = {
      abi: JSON.parse(fs.readFileSync(path.join(__dirname, 'abi.json'), 'utf8')),
      bytecode: fs.readFileSync(path.join(__dirname, 'bytecode.bin'), 'utf8')
    };
    
    // Create contract instance
    const Contract = new web3.eth.Contract(compiledContract.abi);
    
    // Deploy contract
    console.log('Deploying MorphGuardVerification contract...');
    const deployTx = Contract.deploy({
      data: compiledContract.bytecode
    });
    
    // Send the transaction
    const gas = await deployTx.estimateGas();
    const deployedContract = await deployTx.send({
      from: deployer,
      gas
    });
    
    console.log('Contract deployed at address:', deployedContract.options.address);
    
    // Save the contract address to a file
    fs.writeFileSync(
      path.join(__dirname, 'contract-address.txt'),
      deployedContract.options.address
    );
    
    // Create environment variable settings file
    const envContent = `
# MorphGuard Ethereum settings
ETH_ENDPOINT=http://localhost:8545
ETH_CONTRACT_ADDRESS=${deployedContract.options.address}
ETH_WALLET_ADDRESS=${deployer}
# Warning: Store your private key securely in production!
# ETH_PRIVATE_KEY=your_private_key_here
    `.trim();
    
    fs.writeFileSync(path.join(__dirname, '..', '.env.ethereum'), envContent);
    
    console.log('Deployment completed successfully!');
    console.log('Environment variables saved to .env.ethereum');
    
  } catch (error) {
    console.error('Deployment failed:', error);
  }
}

deploy();