WhatsApp Multi-Device API

Authorization: Bearer your-super-secret-bearer-token

X-API-Key: votre_api_key_generee

{
  "device_key": "abc123...",
  "from": "212600000000@c.us",
  "to": "212611111111@c.us",
  "body": "Hello!",
  "type": "chat",
  "timestamp": 1708000000,
  "hasMedia": false,
  "isForwarded": false,
  "isGroup": false
}

{
  "device_key": "abc123...",
  "from": "212600000000@c.us",
  "to": "212611111111@c.us",
  "body": "Check this photo!",
  "type": "image",
  "timestamp": 1708000000,
  "hasMedia": true,
  "isForwarded": false,
  "isGroup": false,
  "media": {
    "mimetype": "image/jpeg",
    "data": "base64_encoded_data...",
    "filename": "IMG-20260215-WA0001.jpg"
  }
}

// Endpoint webhook qui reçoit les messages
app.post('/webhook', async (req, res) => {
  const message = req.body;
  
  // Répondre rapidement au webhook (< 10s)
  res.status(200).send('OK');
  
  // Traiter le message en arrière-plan
  if (message.hasMedia && message.media) {
    // Le média est déjà en base64, il suffit de le sauvegarder
    const buffer = Buffer.from(message.media.data, 'base64');
    const filename = message.media.filename || `media_${Date.now()}`;
    
    fs.writeFileSync(`./media/${filename}`, buffer);
    
    console.log('Média sauvegardé:', {
      filename: filename,
      type: message.media.mimetype,
      from: message.from,
      size: buffer.length
    });
  } else {
    // Message texte simple
    console.log('Message texte:', message.body);
  }
});

import base64
from pathlib import Path
from fastapi import FastAPI

app = FastAPI()

@app.post("/webhook")
async def handle_webhook(message: dict):
    # Répondre rapidement
    
    if message.get("hasMedia") and message.get("media"):
        # Décoder le base64 et sauvegarder
        media_data = base64.b64decode(message["media"]["data"])
        filename = message["media"].get("filename", f"media_{int(time.time())}")
        
        Path(f"./media/{filename}").write_bytes(media_data)
        
        print(f"Média sauvegardé: {filename}")
        print(f"Type: {message['media']['mimetype']}")
        print(f"De: {message['from']}")
    else:
        # Message texte
        print(f"Message: {message['body']}")
    
    return {"status": "ok"}

<?php
// webhook.php

$message = json_decode(file_get_contents('php://input'), true);

// Répondre rapidement
http_response_code(200);
echo 'OK';

// Traiter le message
if ($message['hasMedia'] && isset($message['media'])) {
    // Décoder et sauvegarder le média
    $mediaData = base64_decode($message['media']['data']);
    $filename = $message['media']['filename'] ?? 'media_' . time();
    
    file_put_contents("./media/$filename", $mediaData);
    
    error_log("Média sauvegardé: $filename");
    error_log("Type: " . $message['media']['mimetype']);
} else {
    // Message texte
    error_log("Message: " . $message['body']);
}
?>

{
  "device_key": "abc123...",
  "type": "image",
  "hasMedia": true,
  "media_error": "Download failed: timeout"
}

{
  "success": false,
  "error": "Device non connecté",
  "details": "Additional error information"
}