index.js

import { BingChat } from "bing-chat";
import MailListener from "mail-listener2";
import Nodemailer from "nodemailer";
import dotenv from "dotenv";

dotenv.config();

const emailAddress = "askscamsensei@gmail.com"

const mailTransporter = Nodemailer.createTransport({
  service: "gmail",
  auth: {
    user: emailAddress,
    pass: process.env.GMAIL_PASSWORD,
  },
});

const mailListener = new MailListener({
  username: emailAddress,
  password: process.env.GMAIL_PASSWORD,
  host: "imap.gmail.com",
  port: 993, // imap port
  tls: true,
  connTimeout: 10000, // Default by node-imap
  authTimeout: 5000, // Default by node-imap,
  debug: console.log, // Or your custom function with only one incoming argument. Default: null
  tlsOptions: { rejectUnauthorized: false },
  mailbox: "INBOX", // mailbox to monitor
  searchFilter: ["UNSEEN"], // , "FLAGGED" the search filter being used after an IDLE notification has been retrieved
  markSeen: true, // all fetched email willbe marked as seen and not fetched next time
  fetchUnreadOnStart: true, // use it only if you want to get all unread email on lib start. Default is `false`,
  mailParserOptions: { streamAttachments: true }, // options to be passed to mailParser lib.
  attachments: true, // download attachments as they are encountered to the project directory
  attachmentOptions: { directory: "attachments/" }, // specify a download directory for attachments
});

mailListener.start(); // start listening

// stop listening
//mailListener.stop();

mailListener.on("server:connected", function () {
  console.log("imapConnected");
});

mailListener.on("server:disconnected", function () {
  console.log("imapDisconnected");
});

mailListener.on("error", function (err) {
  console.log(err);
});

mailListener.on("mail", async function (mail, seqno, attributes) {
  // do something with mail object including attachments
  // console.log("emailParsed", mail);
  console.log(mail);
  const senderEmail = mail.headers["return-path"];
  const messageId = mail.headers["message-id"];
  const subject = mail.headers["subject"];
  console.log("Sender email:", senderEmail);
  console.log("Content:", mail.text);

  const api = new BingChat({
    cookie: process.env.BING_CHAT_COOKIE,
  });

  const res = await api.sendMessage(`Senior citizens who are likely of getting scammed have sent an email to ask whether the following email is a scam. Can you help craft an email to respond to the senior citizen whether the email they received is scam or not with language that is targeted towards senior citizens? Please refer to them with "Hi there" and sign off as "Scam Sensei". Do not include anything in your response other than the email body.
  """
  ${mail.text}
  """`);

  console.log(res.text);
  // mail processing code goes here

  let mailDetails = {
    from: emailAddress,
    to: senderEmail,
    inReplyTo: messageId,
    subject: "Re: " + subject,
    text: res.text,
  };

  mailTransporter.sendMail(mailDetails, function (err, data) {
    if (err) {
      console.log("Error Occurs");
    } else {
      console.log("Email sent successfully");
    }
  });
});

mailListener.on("attachment", function (attachment) {
  console.log(attachment.path);
});