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const makeWASocket = require('@whiskeysockets/baileys').default;
const { 
  DisconnectReason, 
  useMultiFileAuthState, 
  fetchLatestBaileysVersion 
} = require('@whiskeysockets/baileys');
const fs = require('fs');
const path = require('path');
const Pino = require('pino');

const logger = Pino({ level: 'info' });

const store = {};

const getMessage = key => {
  const { id } = key;
  if (store[id]) return store[id].message;
};

async function connectWhatsApp() {
  try {
    const { state, saveCreds } = await useMultiFileAuthState('auth');
    const { version } = await fetchLatestBaileysVersion();

    const sock = makeWASocket({
      auth: state,
      version: version,
      getMessage,
      printQRInTerminal: false // Disable QR code
    });

    // Request pairing code if not registered
    if (!sock.authState.creds.registered) {
      const phoneNumber = '+919709769655'; // Replace with your WhatsApp number
      try {
        const code = await sock.requestPairingCode(phoneNumber);
        console.log(`Pairing Code: ${code}`);
        console.log('Enter this code in WhatsApp under Linked Devices > Pair a New Device.');
      } catch (error) {
        console.error('Error requesting pairing code:', error);
      }
    }

    sock.ev.on('connection.update', async (update) => {
      const { connection, lastDisconnect } = update;
      if (connection === 'close') {
        if (lastDisconnect?.error?.output?.statusCode !== DisconnectReason.loggedOut) {
          logger.info('Connection lost. Reconnecting...');
          await connectWhatsApp();
        } else {
          logger.info('Disconnected because you logged out.');
        }
      } else if (connection === 'open') {
        logger.info('Connection established.');
      }
    });

    sock.ev.on('creds.update', async () => {
      try {
        await saveCreds();
        logger.info('Credentials updated.');
      } catch (error) {
        logger.error('Failed to save credentials:', error);
      }
    });

    sock.ev.on('messages.upsert', async (events) => {
      const { messages } = events;
      messages.forEach(message => {
        const maskedNumber = maskPhoneNumber(message.key.remoteJid);
        logger.info(`Message from ${maskedNumber}:`, message);
      });
    });

  } catch (error) {
    logger.error('Failed to connect to WhatsApp:', error);
  }
}

function maskPhoneNumber(phoneNumber) {
  if (!phoneNumber) return phoneNumber;
  const parts = phoneNumber.split('@');
  if (parts.length === 2) {
    const [number, domain] = parts;
    const maskedNumber = number.slice(0, 3) + '*****' + number.slice(-3);
    return `${maskedNumber}@${domain}`;
  }
  return phoneNumber;
}

// Ensure the auth directory exists
const authDir = path.join(__dirname, 'auth');
if (!fs.existsSync(authDir)) {
  fs.mkdirSync(authDir, { recursive: true });
}

connectWhatsApp();