mev-beta/scripts/DeployFlashLoanSecure.s.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "forge-std/Script.sol";
import "../contracts/balancer/FlashLoanReceiverSecure.sol";

/// @title Deploy FlashLoanReceiverSecure to Fork
/// @notice Deployment script for testing flash loan contract on forked Arbitrum
contract DeployFlashLoanSecure is Script {
    // Balancer Vault on Arbitrum mainnet
    address constant BALANCER_VAULT = 0xBA12222222228d8Ba445958a75a0704d566BF2C8;

    // Arbitrum token addresses for testing
    address constant WETH = 0x82aF49447D8a07e3bd95BD0d56f35241523fBab1;
    address constant USDC = 0xaf88d065e77c8cC2239327C5EDb3A432268e5831;
    address constant USDT = 0xFd086bC7CD5C481DCC9C85ebE478A1C0b69FCbb9;
    address constant ARB = 0x912CE59144191C1204E64559FE8253a0e49E6548;

    // Uniswap V3 Router
    address constant UNISWAP_V3_ROUTER = 0xE592427A0AEce92De3Edee1F18E0157C05861564;

    function run() external {
        uint256 deployerPrivateKey = vm.envUint("PRIVATE_KEY");

        vm.startBroadcast(deployerPrivateKey);

        console.log("========================================");
        console.log("Deploying FlashLoanReceiverSecure");
        console.log("========================================");
        console.log("Deployer:", vm.addr(deployerPrivateKey));
        console.log("Balancer Vault:", BALANCER_VAULT);
        console.log("");

        // Deploy FlashLoanReceiverSecure
        FlashLoanReceiverSecure flashLoanReceiver = new FlashLoanReceiverSecure(
            BALANCER_VAULT
        );

        console.log("========================================");
        console.log("Deployment Successful!");
        console.log("========================================");
        console.log("Contract Address:", address(flashLoanReceiver));
        console.log("Owner:", flashLoanReceiver.owner());
        console.log("Max Slippage:", flashLoanReceiver.MAX_SLIPPAGE_BPS(), "bps (0.5%)");
        console.log("Max Path Length:", flashLoanReceiver.MAX_PATH_LENGTH());
        console.log("");

        console.log("========================================");
        console.log("Test Token Addresses (Arbitrum)");
        console.log("========================================");
        console.log("WETH:", WETH);
        console.log("USDC:", USDC);
        console.log("USDT:", USDT);
        console.log("ARB:", ARB);
        console.log("");

        console.log("========================================");
        console.log("DEX Router Addresses");
        console.log("========================================");
        console.log("Uniswap V3:", UNISWAP_V3_ROUTER);
        console.log("");

        console.log("========================================");
        console.log("Next Steps");
        console.log("========================================");
        console.log("1. Fund contract with test ETH for gas");
        console.log("2. Test flash loan with small amount");
        console.log("3. Verify slippage protection works");
        console.log("4. Test reentrancy protection");
        console.log("5. Execute real arbitrage path");
        console.log("");

        console.log("Example: Flash loan 1 WETH");
        console.log("  cast send", address(flashLoanReceiver));
        console.log("    'executeArbitrage(address[],uint256[],bytes)'");
        console.log("    '[", WETH, "]'");
        console.log("    '[1000000000000000000]'  # 1 WETH");
        console.log("    '<encoded-path>'");
        console.log("");

        vm.stopBroadcast();
    }
}