deploy-encrypted.js

const ethers = require("ethers");
require("dotenv").config();
const fs = require("fs");

const PASSWORD = process.env.PASSWORD;
const RPC_URL = process.env.RPC_URL;

async function main() {
    const provider = new ethers.providers.JsonRpcProvider(RPC_URL);

    // create a wallet object from json file
    const encryptedJson = fs.readFileSync("./.encryptedKey.json", "utf-8");
    let wallet = new ethers.Wallet.fromEncryptedJsonSync(
        encryptedJson,
        PASSWORD
    );
    wallet = await wallet.connect(provider);

    const abi = fs.readFileSync(
        "./SimpleStorage_sol_SimpleStorage.abi",
        "utf-8"
    );
    const binary = fs.readFileSync(
        "./SimpleStorage_sol_SimpleStorage.bin",
        "utf-8"
    );

    // deploying the contract
    const contractFactory = new ethers.ContractFactory(abi, binary, wallet);

    console.log("Deploying contract...");

    const contract = await contractFactory.deploy(); // deploy function accept an overrides object to set gasPrice, gasLimit, etc...

    console.log("Contract deployed!");

    const transactionReceipt = await contract.deployTransaction.wait(1);

    // interacting with the contract

    // get initial value for the stored number
    // this is a view function, thus it does not alter the state of the blockchain and it does not cost any gas
    const initialFavouriteNumber = (await contract.retrieve()).toString();
    console.log(`Current favourite number: ${initialFavouriteNumber}`);

    // change stored number
    // this time we change the blockchain state, then we'll use gas
    console.log("Setting new favourite number...");
    const changeNumberTxResponse = await contract.store("23"); // use string format when passing int (for small numbers would work even passing int)
    const changeNumberTxReceipt = await changeNumberTxResponse.wait(1);
    console.log("Favourite number set!");

    const updatedNumber = await contract.retrieve();
    console.log(`The new favourite number is: ${updatedNumber}`);
}

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