example-blind-auction-v2/tasks/auction/bid.ts

import { task } from "hardhat/config";
import type { TaskArguments } from "hardhat/types";
import { FHERC20 } from "../../typechain-types";

task("task:bid")
  .addParam("amount", "Amount to transfer (plaintext number)", "1")
  .setAction(async function (taskArguments: TaskArguments, hre) {
    const { luxfhe, ethers, deployments } = hre;
    const [signer] = await ethers.getSigners();
    let signerAddress = await signer.getAddress();
    const amountToBid = Number(taskArguments.amount);

    const fherc20 = await deployments.get("ExampleToken");
    const tokenContract = await ethers.getContractAt(
      "ExampleToken",
      fherc20.address,
    );

    const auction = await deployments.get("Auction");
    const auctionContract = await ethers.getContractAt(
      "Auction",
      auction.address,
    );

    const encryptedAmount = await luxfhe.encrypt_uint32(amountToBid);

    let contractWithSigner = tokenContract.connect(
      signer,
    ) as unknown as FHERC20;

    console.log(
      `setting allowance on token contract: ${fherc20.address} for auction contract at: ${fherc20.address}`,
    );

    console.time("allowanceDuration");
    try {
      await contractWithSigner.approveEncrypted(
        auction.address,
        encryptedAmount,
      );
    } catch (e) {
      console.log(`failed to set allowance: ${e}`);
      console.timeEnd("allowanceDuration");
      return;
    }
    console.timeEnd("allowanceDuration");

    console.log(`minting ${amountToBid}`);
    await hre.run("task:mint", { amount: String(amountToBid) });

    console.log(
      `bidding @ auction contract at: ${fherc20.address}, amount: ${amountToBid}`,
    );
    console.time("bidDuration");
    try {
      await auctionContract.bid(encryptedAmount);
    } catch (e) {
      console.log(`failed to bid: ${e}`);
      console.timeEnd("bidDuration");
      return;
    }
    console.timeEnd("bidDuration");
  });