#!/bin/bash

# Production contract deployment script for Arbitrum
set -e

echo "🚀 Deploying PRODUCTION MEV arbitrage contracts to Arbitrum..."

# Check environment
if [ -z "$ARBITRUM_RPC_ENDPOINT" ]; then
    echo "❌ ARBITRUM_RPC_ENDPOINT not set"
    exit 1
fi

if [ -z "$PRIVATE_KEY" ]; then
    echo "❌ PRIVATE_KEY not set for deployment"
    exit 1
fi

# Install dependencies if not present
if [ ! -d "node_modules" ]; then
    echo "📦 Installing dependencies..."
    npm install --save-dev @openzeppelin/contracts hardhat @nomiclabs/hardhat-ethers ethers
fi

# Create hardhat config for deployment
cat > hardhat.config.js << EOF
require("@nomiclabs/hardhat-ethers");

module.exports = {
  solidity: {
    version: "0.8.19",
    settings: {
      optimizer: {
        enabled: true,
        runs: 1000000  // Optimize for gas efficiency
      }
    }
  },
  networks: {
    arbitrum: {
      url: "${ARBITRUM_RPC_ENDPOINT}",
      accounts: ["${PRIVATE_KEY}"]
    }
  }
};
EOF

# Create deployment script
cat > scripts/deploy.js << 'EOF'
const { ethers } = require("hardhat");

async function main() {
    console.log("🏗️  Deploying ProductionArbitrageExecutor...");
    
    const [deployer] = await ethers.getSigners();
    console.log("Deploying with account:", deployer.address);
    
    const balance = await deployer.getBalance();
    console.log("Account balance:", ethers.utils.formatEther(balance), "ETH");
    
    // Deploy ProductionArbitrageExecutor
    const ArbitrageExecutor = await ethers.getContractFactory("ProductionArbitrageExecutor");
    
    // Estimate gas
    const deploymentGas = await ArbitrageExecutor.signer.estimateGas(
        ArbitrageExecutor.getDeployTransaction()
    );
    console.log("Estimated deployment gas:", deploymentGas.toString());
    
    const executor = await ArbitrageExecutor.deploy({
        gasLimit: deploymentGas.mul(120).div(100) // 20% buffer
    });
    
    await executor.deployed();
    
    console.log("✅ ProductionArbitrageExecutor deployed to:", executor.address);
    
    // Verify contract is working
    const minProfit = await executor.minProfitThreshold();
    const maxGas = await executor.maxGasPrice();
    
    console.log("📊 Contract Configuration:");
    console.log("  Min Profit Threshold:", ethers.utils.formatEther(minProfit), "ETH");
    console.log("  Max Gas Price:", ethers.utils.formatUnits(maxGas, "gwei"), "gwei");
    
    // Update config file
    const fs = require('fs');
    const yaml = require('js-yaml');
    
    try {
        const configPath = 'config/arbitrum_production.yaml';
        const config = yaml.load(fs.readFileSync(configPath, 'utf8'));
        
        // Update contract addresses
        config.contracts.arbitrage_executor = executor.address;
        
        // Write updated config
        fs.writeFileSync(configPath, yaml.dump(config));
        console.log("✅ Updated config file with contract address");
        
    } catch (error) {
        console.log("⚠️  Could not update config file:", error.message);
        console.log("📝 Manual update required:");
        console.log(`   arbitrage_executor: "${executor.address}"`);
    }
    
    console.log("🎯 Deployment Summary:");
    console.log("  Contract Address:", executor.address);
    console.log("  Network: Arbitrum One (Chain ID: 42161)");
    console.log("  Gas Used:", deploymentGas.toString());
    console.log("  Status: READY FOR PROFITABLE ARBITRAGE");
}

main()
    .then(() => process.exit(0))
    .catch((error) => {
        console.error("❌ Deployment failed:", error);
        process.exit(1);
    });
EOF

# Create package.json if not exists
if [ ! -f "package.json" ]; then
    cat > package.json << EOF
{
  "name": "mev-bot-contracts",
  "version": "1.0.0",
  "description": "Production MEV arbitrage contracts",
  "scripts": {
    "deploy": "hardhat run scripts/deploy.js --network arbitrum"
  },
  "devDependencies": {
    "@openzeppelin/contracts": "^4.9.0",
    "hardhat": "^2.17.0",
    "@nomiclabs/hardhat-ethers": "^2.2.0",
    "ethers": "^5.7.0",
    "js-yaml": "^4.1.0"
  }
}
EOF
fi

# Install dependencies
echo "📦 Installing contract dependencies..."
npm install

# Compile contracts
echo "🔨 Compiling contracts..."
npx hardhat compile

# Deploy contracts
echo "🚀 Deploying to Arbitrum..."
npx hardhat run scripts/deploy.js --network arbitrum

echo ""
echo "🎉 PRODUCTION CONTRACTS DEPLOYED SUCCESSFULLY!"
echo ""
echo "⚠️  IMPORTANT: Save these addresses securely!"
echo "   - Use them in your MEV bot configuration"
echo "   - Verify on Arbiscan before using with large amounts"
echo "   - Test thoroughly with small amounts first"
echo ""
echo "📈 Next steps:"
echo "1. Update MEV bot config with new contract address"
echo "2. Test arbitrage execution with forked environment"
echo "3. Start with small amounts on mainnet"
echo "4. Monitor profitability and adjust parameters"