const { default: makeWASocket, useMultiFileAuthState, DisconnectReason, fetchLatestBaileysVersion, proto, generateWAMessageFromContent, generateWAMessageContent } = require('@fizzxydev/baileys-pro');
const express = require('express');
const { Boom } = require('@hapi/boom');
const qrcode = require('qrcode');
const path = require('path');
const fs = require('fs');

const app = express();
app.use(express.json());
app.use(express.static('public'));

let sock;
let qrData = null;
let isConnected = false;

const initBaileys = async () => {
  const { version } = await fetchLatestBaileysVersion();
  const { state, saveCreds } = await useMultiFileAuthState('auth');

  sock = makeWASocket({
    version,
    auth: state,
    printQRInTerminal: false
  });

  sock.ev.on('connection.update', async (update) => {
    const { connection, lastDisconnect, qr } = update;
    if (qr) {
      qrData = await qrcode.toDataURL(qr);
      isConnected = false;
    }
    if (connection === 'close') {
      const shouldReconnect = lastDisconnect?.error?.output?.statusCode !== DisconnectReason.loggedOut;
      if (shouldReconnect) {
        console.log('🔁 Reconnexion...');
        initBaileys();
      } else {
        console.log('❌ Déconnecté.');
      }
    } else if (connection === 'open') {
      console.log('✅ Connecté à WhatsApp');
      isConnected = true;
    }
  });

  sock.ev.on('creds.update', saveCreds);
};

initBaileys();

app.get('/login', (req, res) => {
  res.sendFile(path.join(__dirname, 'public', 'login.html'));
});

app.get('/api/qrcode', (req, res) => {
  res.json({ qr: qrData, connected: isConnected });
});

app.post('/sendText', async (req, res) => {
  const { phone, message } = req.body;
  if (!sock || !isConnected) return res.status(400).json({ error: 'Non connecté' });
  try {
    await sock.sendMessage(`${phone}@s.whatsapp.net`, { text: message });
    res.json({ success: true });
  } catch (e) {
    res.status(500).json({ error: e.message });
  }
});

app.post('/sendButtons', async (req, res) => {
  const { phone } = req.body;
  if (!sock || !isConnected) return res.status(400).json({ error: 'Non connecté' });

  try {
    const content = {
      message: {
        interactiveMessage: proto.Message.InteractiveMessage.create({
          body: { text: "Bienvenue sur notre service !" },
          footer: { text: "Choisis une action ci-dessous" },
          header: {
            title: "Menu principal",
            hasMediaAttachment: false
          },
          nativeFlowMessage: {
            buttons: [
              {
                name: "cta_reply",
                buttonParamsJson: JSON.stringify({
                  display_text: "📩 Contacter support",
                  id: "support_action"
                })
              },
              {
                name: "cta_url",
                buttonParamsJson: JSON.stringify({
                  display_text: "🌐 Voir notre site",
                  url: "https://canguidev.fr",
                  merchant_url: "https://canguidev.fr"
                })
              },
              {
                name: "cta_call",
                buttonParamsJson: JSON.stringify({
                  display_text: "📞 Appeler le support",
                  id: "+33612345678"
                })
              }
            ]
          }
        })
      }
    };

    const msg = generateWAMessageFromContent(`${phone}@s.whatsapp.net`, content, {});
    await sock.relayMessage(`${phone}@s.whatsapp.net`, msg.message, { messageId: msg.key.id });

    res.json({ success: true });
  } catch (e) {
    console.error('❌ Erreur bouton actif :', e);
    res.status(500).json({ error: e.message });
  }
});

app.post('/sendInteractiveImage', async (req, res) => {
  const { phone, caption, title, subtitle, footer } = req.body;
  if (!sock || !isConnected) return res.status(400).json({ error: 'Non connecté' });

  try {
    const imagePath = path.join(__dirname, 'public', 'logo-merlo-cs-FR.jpg');
    const resizedBuffer = fs.readFileSync(imagePath);

    await sock.sendMessage(`${phone}@s.whatsapp.net`, {
      image: resizedBuffer,
      caption: caption || 'Description par défaut',
      title: title || 'Titre par défaut',
      subtitle: subtitle || 'Sous-titre',
      footer: footer || 'Pied de page',
      media: true,
      interactiveButtons: [
        {
          name: 'cta_url',
          buttonParamsJson: JSON.stringify({
            display_text: 'Proposition',
            url: 'https://merlo-ch.com/uploads/proposition/f_p_250505_0000136_00008_EB00001909.pdf'
          })
        },
        {
          name: 'cta_url',
          buttonParamsJson: JSON.stringify({
            display_text: 'Spec machine',
            url: 'https://merlo-ch.com/uploads/proposition/d_p_250505_0000136_00008_EB00001909.pdf'
          })
        }
      ]
    });
    res.json({ success: true });
  } catch (e) {
    console.error('❌ Erreur interactive image :', e);
    res.status(500).json({ error: e.message });
  }
});

app.listen(3001, () => console.log('🚀 Serveur Baileys démarré sur http://localhost:3001'));