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);
};

async function generateMediaMessage(sock, type, url) {
  const generated = await generateWAMessageContent(
    { [type]: { url } },
    { upload: sock.waUploadToServer }
  );
  return generated[`${type}Message`];
}

async function sendInteractive(sock, jid, imageUrl) {
  const imageMsg = await generateMediaMessage(sock, 'image', imageUrl);

  const content = {
    viewOnceMessage: {
      message: {
        messageContextInfo: {
          deviceListMetadata: {},
          deviceListMetadataVersion: 2,
        },
        interactiveMessage: proto.Message.InteractiveMessage.create({
          body: { text: 'Quel produit vous intéresse ?' },
          footer: { text: 'Répondez via un bouton' },
          header: {
            title: 'Menu produits',
            hasMediaAttachment: true,
            imageMessage: imageMsg,
          },
          nativeFlowMessage: {
            buttons: [
              {
                name: 'quick_reply',
                buttonParamsJson: JSON.stringify({
                  display_text: '📦 Voir produits',
                  id: '.produits',
                }),
              },
              {
                name: 'ctl_url',
                buttonParamsJson: JSON.stringify({
                  display_text: '🛒 Visiter boutique',
                  url: 'https://canguidev.fr',
                  merchant_url: 'https://canguidev.fr',
                }),
              },
            ],
          },
        }),
      },
    },
  };

  const msg = generateWAMessageFromContent(jid, content, {});
  await sock.relayMessage(jid, msg.message, { messageId: msg.key.id });
}

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 = {
      viewOnceMessage: {
        message: {
          messageContextInfo: {
            deviceListMetadata: {},
            deviceListMetadataVersion: 2
          },
          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": "{\"display_text\":\"url\",\"url\":\"https://www.google.com\",\"merchant_url\":\"https://www.google.com\"}"
               },
                {
                  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.listen(3001, () => console.log('🚀 Serveur Baileys démarré sur http://localhost:3001'));