// contracts/MyContract.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract MyContract {
    uint256 public value;
    address public owner;

    event ValueChanged(uint256 newValue);

    constructor(uint256 _initialValue) {
        value = _initialValue;
        owner = msg.sender;
    }

    function setValue(uint256 _value) external {
        value = _value;
        emit ValueChanged(_value);
    }
}

// scripts/deploy.ts
import { ethers } from 'hardhat';

async function main() {
  const [deployer] = await ethers.getSigners();
  console.log('Deploying with:', deployer.address);

  const balance = await deployer.provider.getBalance(deployer.address);
  console.log('Balance:', ethers.formatEther(balance), '0G');

  const Contract = await ethers.getContractFactory('MyContract');
  const contract = await Contract.deploy(42);
  await contract.waitForDeployment();

  const address = await contract.getAddress();
  console.log('Deployed to:', address);
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

# Compile
npx hardhat compile

# Deploy to testnet
npx hardhat run scripts/deploy.ts --network 0g-testnet

# Verify
npx hardhat verify --network 0g-testnet <CONTRACT_ADDRESS> 42

# Compile
forge build

# Deploy
forge create src/MyContract.sol:MyContract \
  --rpc-url https://evmrpc-testnet.0g.ai \
  --private-key $PRIVATE_KEY \
  --constructor-args 42

# Verify
forge verify-contract <CONTRACT_ADDRESS> src/MyContract.sol:MyContract \
  --chain-id 16602 \
  --verifier-url https://chainscan-galileo.0g.ai/api

import { ethers, ContractFactory } from 'ethers';
import * as fs from 'fs';
import 'dotenv/config';

async function deploy() {
  const provider = new ethers.JsonRpcProvider(process.env.RPC_URL);
  const wallet = new ethers.Wallet(process.env.PRIVATE_KEY!, provider);

  // Load compiled artifact
  const artifact = JSON.parse(
    fs.readFileSync('./artifacts/contracts/MyContract.sol/MyContract.json', 'utf8'),
  );

  const factory = new ContractFactory(artifact.abi, artifact.bytecode, wallet);
  const contract = await factory.deploy(42);
  await contract.waitForDeployment();

  const address = await contract.getAddress();
  console.log('Deployed to:', address);

  return { address, abi: artifact.abi };
}

// Complex constructor
const contract = await Contract.deploy(
  'My Token', // string name
  'MTK', // string symbol
  ethers.parseEther('1000000'), // uint256 initialSupply
  wallet.address, // address owner
);
await contract.waitForDeployment();

// BAD: Missing evmVersion
// hardhat.config.ts
solidity: '0.8.24'; // WRONG — needs cancun setting

// BAD: ethers v5 deployment check
await contract.deployed(); // v5! Use waitForDeployment()

// BAD: Getting address v5 style
console.log(contract.address); // v5! Use await contract.getAddress()

// BAD: Deploying without balance check
await Contract.deploy(42); // May fail with insufficient funds