03_write_transactions

// this is baased on using known private keys to send transactions. there are 3 other methods of doing this (using random private key, using mnemonics and using a JSON file)

const { ethers } = require("ethers");

const provider = new ethers.JsonRpcProvider(`https://sepolia.infura.io/v3/8b9750710d56460d940aeff47967c4ba`)

const account1 ='0xD616f5A49571e7BCb1BB5326031bC8078BDA9Faa' //sender
const account2 = '0x70e8dE73cE538DA2bEEd35d14187F6959a8ecA96' //recipient

const privateKey1 = 'cd82a7d0d6e528322e8c26f9ccbc18767543786d073c48ef38a753f29b1e8f39' //sender private key
const wallet = new ethers.Wallet(privateKey1, provider)


const main = async() => {
        //show account 1 balance before transfer
        const senderBalanceBefore = await provider.getBalance(account1)
        //show account 2 balance before transfer
        const receiverBalanceBefore = await provider.getBalance(account2)

        console.log(`\nSender balance before: ${ethers.formatEther(senderBalanceBefore)}\n`)
        console.log(`\nReceiver balance before: ${ethers.formatEther(receiverBalanceBefore)}\n`)

        // send ether
        const tx = await wallet.sendTransaction({
            to: account2, 
            value: ethers.parseEther("0.025") 
        })

        // fetch transaction or wait for transaction to be mined 
        await tx.wait()
        console.log(tx)

        //show account 1 balance after transfer
        const senderBalanceAfter = await provider.getBalance(account1)
        //show account 2 balance after transfer
        const receiverBalanceAfter = await provider.getBalance(account2)

        console.log(`\nSender balance before: ${ethers.formatEther(senderBalanceAfter)}\n`)
        console.log(`\nReceiver balance before: ${ethers.formatEther(receiverBalanceAfter)}\n`)

}

main()


// this allows you to generate a random wallet with a private key and mnemonics 

const { ethers } = require("ethers");

const provider = new ethers.JsonRpcProvider(`https://sepolia.infura.io/v3/8b9750710d56460d940aeff47967c4ba`)

const randomWallet = ethers.Wallet.createRandom();
console.log(randomWallet);