Seção 1: Escrever e deployar o contrato inteligente WavePortal na rede local Ethereum

deploy.js

const main = async () => {
  const [deployer] = await hre.ethers.getSigners();
  const accountBalance = await deployer.getBalance();

  console.log("Deploying contracts with account: ", deployer.address);
  console.log("Account balance: ", accountBalance.toString());

  const Token = await hre.ethers.getContractFactory("WavePortal");
  const portal = await Token.deploy();
  await portal.deployed();

  console.log("WavePortal address: ", portal.address);
};

const runMain = async () => {
  try {
    await main();
    process.exit(0);
  } catch (error) {
    console.error(error);
    process.exit(1);
  }
};

runMain();

run.js

const main = async () => {
  const [owner, randomPerson] = await hre.ethers.getSigners();
  const waveContractFactory = await hre.ethers.getContractFactory("WavePortal");
  const waveContract = await waveContractFactory.deploy();
  await waveContract.deployed();

  console.log("Contract deployed to:", waveContract.address);
  console.log("Contract deployed by:", owner.address);

  let waveCount;
  waveCount = await waveContract.getTotalWaves();

  let waveTxn = await waveContract.wave();
  await waveTxn.wait();

  waveCount = await waveContract.getTotalWaves();

  waveTxn = await waveContract.connect(randomPerson).wave();
  await waveTxn.wait();

  waveCount = await waveContract.getTotalWaves();
};

const runMain = async () => {
  try {
    await main();
    process.exit(0);
  } catch (error) {
    console.log(error);
    process.exit(1);
  }
};

runMain();

WavePortal.sol

// SPDX-License-Identifier: UNLICENSED

pragma solidity ^0.8.0;

import "hardhat/console.sol";

contract WavePortal {
    uint256 totalWaves;

    constructor() {
        console.log("Ueba, eu sou um contrato e eu sou inteligente");
    }

    function wave() public {
        totalWaves += 1;
        console.log("%s deu tchauzinho!", msg.sender);
    }

    function getTotalWaves() public view returns (uint256) {
        console.log("Temos um total de %d tchauzinhos!", totalWaves);
        return totalWaves;
    }
}

Tudo ok, vamos em frente!

Muito bom! Vamos que Vamos