Uniswap V2 & SushiSwap: Swap Tokens

01_deployContracts.js

const {
    Contract, ContractFactory, utils, constants,
} = require("ethers")

const WETH9 = require("../WETH9.json")

const factoryArtifact = require('@uniswap/v2-core/build/UniswapV2Factory.json')
const routerArtifact = require('@uniswap/v2-periphery/build/UniswapV2Router02.json')
const pairArtifact = require('@uniswap/v2-periphery/build/IUniswapV2Pair.json')


async function main() {
    const [owner, trader] = await ethers.getSigners()


    const Usdt = await ethers.getContractFactory('Tether', owner);
    const usdt = await Usdt.deploy();
    const Usdc = await ethers.getContractFactory('UsdCoin', owner);
    const usdc = await Usdc.deploy();
    const Weth = new ContractFactory(WETH9.abi, WETH9.bytecode, owner);
    const weth = await Weth.deploy();


    const mintAmount = utils.parseEther('100000')
    await usdt.connect(owner).mint(owner.address, mintAmount)
    await usdc.connect(owner).mint(owner.address, mintAmount)
    await usdt.connect(owner).mint(trader.address, mintAmount)
    await usdc.connect(owner).mint(trader.address, mintAmount)


    const FactoryA = new ContractFactory(factoryArtifact.abi, factoryArtifact.bytecode, owner);
    const factoryA = await FactoryA.deploy(owner.address)
    const FactoryB = new ContractFactory(factoryArtifact.abi, factoryArtifact.bytecode, owner);
    const factoryB = await FactoryB.deploy(owner.address)


    const txA1 = await factoryA.createPair(usdt.address, usdc.address);
    await txA1.wait()
    const txB1 = await factoryB.createPair(usdt.address, usdc.address);
    await txB1.wait()


    const pairAddressA = await factoryA.getPair(usdt.address, usdc.address)
    const pairAddressB = await factoryB.getPair(usdt.address, usdc.address)


    const pairA = new Contract(pairAddressA, pairArtifact.abi, owner)
    const pairB = new Contract(pairAddressB, pairArtifact.abi, owner)


    const RouterA = new ContractFactory(routerArtifact.abi, routerArtifact.bytecode, owner);
    const routerA = await RouterA.deploy(factoryA.address, weth.address)
    const RouterB = new ContractFactory(routerArtifact.abi, routerArtifact.bytecode, owner);
    const routerB = await RouterB.deploy(factoryB.address, weth.address)


    const approvalUsdtOwnerA = await usdt.connect(owner).approve(routerA.address, constants.MaxUint256);
    await approvalUsdtOwnerA.wait();
    const approvalUsdcOwnerA = await usdc.connect(owner).approve(routerA.address, constants.MaxUint256);
    await approvalUsdcOwnerA.wait();
    const approvalUsdtTraderA = await usdt.connect(trader).approve(routerA.address, constants.MaxUint256);
    await approvalUsdtTraderA.wait();
    const approvalUsdcTraderA = await usdc.connect(trader).approve(routerA.address, constants.MaxUint256);
    await approvalUsdcTraderA.wait();
    const approvalUsdtOwnerB = await usdt.connect(owner).approve(routerB.address, constants.MaxUint256);
    await approvalUsdtOwnerB.wait();
    const approvalUsdcOwnerB = await usdc.connect(owner).approve(routerB.address, constants.MaxUint256);
    await approvalUsdcOwnerB.wait();
    const approvalUsdtTraderB = await usdt.connect(trader).approve(routerB.address, constants.MaxUint256);
    await approvalUsdtTraderB.wait();
    const approvalUsdcTraderB = await usdc.connect(trader).approve(routerB.address, constants.MaxUint256);
    await approvalUsdcTraderB.wait();


    const addLiquidityTxA = await routerA.connect(owner).addLiquidity(
        usdt.address,
        usdc.address,
        utils.parseEther('100'),
        utils.parseEther('100'),
        0,
        0,
        owner.address,
        Math.floor(Date.now() / 1000 + (10 * 60)),
        { gasLimit: utils.hexlify(1_000_000)}
    );
    addLiquidityTxA.wait();


    const addLiquidityTxB = await routerB.connect(owner).addLiquidity(
        usdt.address,
        usdc.address,
        utils.parseEther('50'),
        utils.parseEther('150'),
        0,
        0,
        owner.address,
        Math.floor(Date.now() / 1000 + (10 * 60)),
        { gasLimit: utils.hexlify(1_000_000)}
    );
    addLiquidityTxB.wait();


    let reservesA
    let reservesB
    reservesA = await pairA.getReserves()
    console.log('reservesA', reservesA)
    reservesB = await pairB.getReserves()
    console.log('reservesB', reservesB)


    console.log('USDT_ADDRESS=', `'${usdt.address}'`)
    console.log('USDC_ADDRESS=', `'${usdc.address}'`)
    console.log('WETH_ADDRESS=', `'${weth.address}'`)
    console.log('FACTORY_A_ADDRESS=', `'${factoryA.address}'`)
    console.log('FACTORY_B_ADDRESS=', `'${factoryB.address}'`)
    console.log('PAIR_A_ADDRESS=', `'${pairAddressA}'`)
    console.log('PAIR_B_ADDRESS=', `'${pairAddressB}'`)
    console.log('ROUTER_A_ADDRESS=', `'${routerA.address}'`)
    console.log('ROUTER_B_ADDRESS=', `'${routerB.address}'`)
}

/*
npx hardhat run --network localhost scripts/01_deployContracts.js
*/


main()
  .then(() => process.exit(0))
  .catch((error) => {
    console.error(error);
    process.exit(1);
  });

02_simpleV2Swap.js

const { providers, Contract, utils, constants } = require('ethers');
const routerArtifact = require('@uniswap/v2-periphery/build/UniswapV2Router02.json')
const usdtArtifact = require("../artifacts/contracts/Tether.sol/Tether.json")
const usdcArtifact = require("../artifacts/contracts/UsdCoin.sol/UsdCoin.json")

// Copy Addresses
USDT_ADDRESS= '0x5FbDB2315678afecb367f032d93F642f64180aa3'
USDC_ADDRESS= '0xe7f1725E7734CE288F8367e1Bb143E90bb3F0512'
WETH_ADDRESS= '0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0'
FACTORY_A_ADDRESS= '0xa513E6E4b8f2a923D98304ec87F64353C4D5C853'
FACTORY_B_ADDRESS= '0x2279B7A0a67DB372996a5FaB50D91eAA73d2eBe6'
PAIR_A_ADDRESS= '0xD1f1bbbF65CceB5cAf1691a76c17D4E75213B69c'
PAIR_B_ADDRESS= '0x41Cc89c770ddFcF9b54C6C04CaAfeA885Ce8c1b8'
ROUTER_A_ADDRESS= '0xB7f8BC63BbcaD18155201308C8f3540b07f84F5e'
ROUTER_B_ADDRESS= '0xA51c1fc2f0D1a1b8494Ed1FE312d7C3a78Ed91C0'

const provider = new providers.JsonRpcProvider('http://127.0.0.1:8545/')

const router = new Contract(
    ROUTER_A_ADDRESS,
    routerArtifact.abi,
    provider
)

const usdt = new Contract(
    USDT_ADDRESS,
    usdtArtifact.abi,
    provider
)

const usdc = new Contract(
    USDC_ADDRESS,
    usdcArtifact.abi,
    provider
)

const logBalance = async (signerObj) => {
    let ethBalance
    let usdtBalance
    let usdcBalance
    let balances
    ethBalance = await signerObj.getBalance()
    usdtBalance = await usdt.balanceOf(signerObj.address)
    usdcBalance = await usdc.balanceOf(signerObj.address)
    balances = {
        ethBalance: ethBalance,
        usdtBalance: usdtBalance,
        usdcBalance: usdcBalance,
    }
    console.log('balances', balances)

}

const main = async () => {
    const [owner, trader] = await ethers.getSigners()

    await logBalance(trader)

    const tx = await router.connect(trader).swapExactTokensForTokens(
        utils.parseUnits('1', 18),
        0,
        [USDT_ADDRESS, USDC_ADDRESS],
        trader.address,
        Math.floor(Date.now() / 1000) + (60 * 10),
        {
            gasLimit: 1000000,
        }
    )

    await tx.wait()
    await logBalance(trader)
}

/*
npx hardhat run --network localhost scripts/02_simpleV2Swap.js
*/

main()
    .then(() => process.exit(0))
    .catch((error) => {
        console.error(error);
        process.exit(1);
    });

hardhat.config.js

require("@nomiclabs/hardhat-waffle");

/** @type import('hardhat/config').HardhatUserConfig */
module.exports = {
  solidity: {
    version: "0.8.17",
    settings: {
      optimizer: {
        enabled: true,
        runs: 5000,
        details: { yul: false },
      },
    }
  },
};

package.json

{
  "name": "both",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "dependencies": {
    "@nomiclabs/hardhat-ethers": "^2.1.1",
    "@nomiclabs/hardhat-waffle": "^2.0.3",
    "@openzeppelin/contracts": "^4.7.3",
    "@uniswap/v2-core": "^1.0.1",
    "@uniswap/v2-periphery": "^1.1.0-beta.0",
    "ethereum-waffle": "^3.4.4",
    "ethers": "^5.7.1",
    "hardhat": "^2.11.2"
  }
}

Tether.sol

pragma solidity ^0.8.0;

import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import "@openzeppelin/contracts/access/Ownable.sol";

contract Tether is ERC20, Ownable {
  constructor() ERC20('Tether', 'USDT') {}

  function mint(address to, uint256 amount) public onlyOwner {
    _mint(to, amount);
  }
}

UsdCoin.sol

pragma solidity ^0.8.0;

import '@openzeppelin/contracts/token/ERC20/ERC20.sol';
import "@openzeppelin/contracts/access/Ownable.sol";

contract UsdCoin is ERC20, Ownable {
  constructor() ERC20('UsdCoin', 'USDC') {}

  function mint(address to, uint256 amount) public onlyOwner {
    _mint(to, amount);
  }
}

WETH9.json

{
  "bytecode": "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  "abi": [
    {
      "constant": true,
      "inputs": [],
      "name": "name",
      "outputs": [{ "name": "", "type": "string" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        { "name": "guy", "type": "address" },
        { "name": "wad", "type": "uint256" }
      ],
      "name": "approve",
      "outputs": [{ "name": "", "type": "bool" }],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "totalSupply",
      "outputs": [{ "name": "", "type": "uint256" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        { "name": "src", "type": "address" },
        { "name": "dst", "type": "address" },
        { "name": "wad", "type": "uint256" }
      ],
      "name": "transferFrom",
      "outputs": [{ "name": "", "type": "bool" }],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [{ "name": "wad", "type": "uint256" }],
      "name": "withdraw",
      "outputs": [],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "decimals",
      "outputs": [{ "name": "", "type": "uint8" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [{ "name": "", "type": "address" }],
      "name": "balanceOf",
      "outputs": [{ "name": "", "type": "uint256" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [],
      "name": "symbol",
      "outputs": [{ "name": "", "type": "string" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [
        { "name": "dst", "type": "address" },
        { "name": "wad", "type": "uint256" }
      ],
      "name": "transfer",
      "outputs": [{ "name": "", "type": "bool" }],
      "payable": false,
      "stateMutability": "nonpayable",
      "type": "function"
    },
    {
      "constant": false,
      "inputs": [],
      "name": "deposit",
      "outputs": [],
      "payable": true,
      "stateMutability": "payable",
      "type": "function"
    },
    {
      "constant": true,
      "inputs": [
        { "name": "", "type": "address" },
        { "name": "", "type": "address" }
      ],
      "name": "allowance",
      "outputs": [{ "name": "", "type": "uint256" }],
      "payable": false,
      "stateMutability": "view",
      "type": "function"
    },
    { "payable": true, "stateMutability": "payable", "type": "fallback" },
    {
      "anonymous": false,
      "inputs": [
        { "indexed": true, "name": "src", "type": "address" },
        { "indexed": true, "name": "guy", "type": "address" },
        { "indexed": false, "name": "wad", "type": "uint256" }
      ],
      "name": "Approval",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        { "indexed": true, "name": "src", "type": "address" },
        { "indexed": true, "name": "dst", "type": "address" },
        { "indexed": false, "name": "wad", "type": "uint256" }
      ],
      "name": "Transfer",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        { "indexed": true, "name": "dst", "type": "address" },
        { "indexed": false, "name": "wad", "type": "uint256" }
      ],
      "name": "Deposit",
      "type": "event"
    },
    {
      "anonymous": false,
      "inputs": [
        { "indexed": true, "name": "src", "type": "address" },
        { "indexed": false, "name": "wad", "type": "uint256" }
      ],
      "name": "Withdrawal",
      "type": "event"
    }
  ]
}

Thank you and once i start making money again im taking you class, feels like ive been looking for this forever, If your interested i hhave an Nft that i want to lauch on the meta verse. if interested let me kmow