Batch create loans for NFT pawn shop

batchCreateLoans.js

async function main() {
    const [deployer] = await ethers.getSigners();
    console.log(
        "Running batch create loans script with signer:",
        await deployer.getAddress()
    );

    const NFTLoanFacilitatorContract = await ethers.getContractFactory("NFTLoanFacilitator");
    const facilitator = await NFTLoanFacilitatorContract.attach(
        "0x2b804a97b2b3710b71ed1764eb6fa36233440738"
    )
    let facilitatorABI = [
        "function createLoan(uint256 collateralTokenId, address collateralContractAddress, uint16 maxPerSecondInterest, uint256 minLoanAmount, address loanAssetContractAddress, uint32 minDurationSeconds, address mintBorrowTicketTo)"
    ];

    const DAIContract = await ethers.getContractFactory("DAI");
    const dai = await DAIContract.attach("0x6916577695D0774171De3ED95d03A3239139Eddb")

    const CryptoPunksContract = await ethers.getContractFactory("CryptoPunks");
    const punks = await CryptoPunksContract.attach(
        "0x9EC7Ff8964AfBa6D8c43DC340A2E6c6c3156e966"
    )

    var interest = ethers.BigNumber.from(
        Math.floor(5 * 10 ** 8),
    ).div(31_536_000);
    var durationSeconds = ethers.BigNumber.from(86400);
    var loanAmount = ethers.utils.parseUnits((1000).toString(), 18)

    const currentNonce = 73; // current nonce of fake punks NFT contract (i.e. how many token ids have already been minted)
    const totalMints = 5
    for (let i = currentNonce + 1; i <= currentNonce + totalMints; i++) {
        const tokenId = ethers.BigNumber.from(i)
        await punks.mint()

        await wait(300000) // make sure mint gets recorded on-chain

        var interest = ethers.BigNumber.from(
            Math.floor(5 * 10 ** 8),
        ).div(31_536_000);
        var durationSeconds = 86400;
        var loanAmount = ethers.utils.parseUnits((1000).toString(), 18)

        await punks.approve(facilitator.address, tokenId)

        await wait(300000) // make sure approval gets recorded on-chain

        let iface = new ethers.utils.Interface(facilitatorABI);
        let data = iface.encodeFunctionData("createLoan",
            [tokenId, punks.address, interest, loanAmount, dai.address, durationSeconds, await deployer.getAddress()]
        )

        data = '0x55c82235' + data.substring(10)

        const tx = {
            from: await deployer.getAddress(),
            to: facilitator.address,
            value: '0x00',
            data,
            gasLimit: "0x64190"
        }

        const result = await deployer.sendTransaction(tx)
        console.log(result.hash)
    }

}

function wait(ms) {
    return new Promise(r => setTimeout(r, ms));
}

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