index.js

const venom = require("venom-bot");
const { timeStamp } = require("console");

venom
  .create({
    session: "eid_wisher_bot", //name of session
    multidevice: true, // for version not multidevice use false.(default: true),
    catchQR: (base64Qrimg, asciiQR) => {
      //   console.log("Number of attempts to read the qrcode: ", attempts);
      //   console.log("Terminal qrcode: ", asciiQR);
      //   console.log("base64 image string qrcode: ", base64Qrimg);
      //   console.log("urlCode (data-ref): ", urlCode);
      //   console.log("NEW QR CODE GENERATED"); // Optional to log the QR in the terminal
      var matches = base64Qrimg.match(/^data:([A-Za-z-+\/]+);base64,(.+)$/),
        response = {};

      if (matches.length !== 3) {
        return new Error("Invalid input string");
      }
      response.type = matches[1];
      response.data = new Buffer.from(matches[2], "base64");

      var imageBuffer = response;
      require("fs").writeFile(
        "img/out.png",
        imageBuffer["data"],
        "binary",
        function (err) {
          if (err != null) {
            console.log(err);
          } else {
            console.log("New QR CODE");
            // refreshState();
          }
        }
      );
    },
    statusFind: (statusSession, session) => {
      if (statusSession == "qrReadSuccess") {
        console.log("HELLO WORLD");
        // io.emit('scanned_qr_success')
      }
    },
  })
  .then((client) => start(client))
  .catch((erro) => {
    console.log(erro);
  });

function start(client) {
  console.log("EID WISHER BOT ", client);

  client.onMessage((message) => {
    console.log("Message: ", message);
    if (
      message.body.toUpperCase().includes("EID MUBARAK") ||
      message.body.toUpperCase().includes("EID MUBARIK") ||
      message.body.toUpperCase().includes("MUBARIK EID") ||
      message.body.toUpperCase().includes("MUBARAK EID") ||
      message.body.toUpperCase().includes("EID UL ADHA MUBARAK") ||
      message.body.toUpperCase().includes("EID UL ADHA MUBARIK") ||
      message.body.toUpperCase().includes("EID UL AZHA MUBARIK") ||
      message.body.toUpperCase().includes("EID UL AZHA MUBARAK") ||
      message.body.toUpperCase().includes("عید مبارک") ||
      message.body.toUpperCase().includes("عید الاضحی مبارک") ||
      message.body.toUpperCase().includes("بکرہ عید مبارک") ||
      message.body.toUpperCase().includes("بکرا عید مبارک") ||
      message.body.toUpperCase().includes("بڑی عید مبارک") ||
      tryToExtractEidWishes(message.body)
    ) {
      sendMessageToWhatsapp(message.from, "Khair Mubarak!");
    }
  });

  client.onAnyMessage((message) => {
    console.log("Any Message: ", message);
  });

  function sendMessageToWhatsapp(to, messageBody) {
    client
      .sendText(to, messageBody)
      .then((result) => {
        console.log("Testing");
        console.log("Message Send Result: ", result); //return object success
      })
      .catch((erro) => {
        console.error("Error when sending: ", erro); //return object error
      });
  }

  function tryToExtractEidWishes(message) {
    var wishes = message.split(" ");
    var wish = "";
    for (var i = 0; i < wishes.length; i++) {
      if (
        wishes[i].toUpperCase().includes("EID") ||
        wishes[i].toUpperCase().includes("عید")
      ) {
        wish = wishes[i];
        break;
      }
      if (
        wishes[i].toUpperCase().includes("MUBARAK") ||
        wishes[i].toUpperCase().includes("مبارک")
      ) {
        wish = wishes[i];
        break;
      }
    }
    if (wish.length > 0) {
      console.log("Wish: ", wish);
      return true;
    }
    return false;
  }
}