356 lines
14 KiB
PHP
356 lines
14 KiB
PHP
<?php
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/**
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* Webhook para recibir mensajes de WhatsApp
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* Fecha: 13 de noviembre de 2025
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*/
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require_once __DIR__ . '/../config/config.php';
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// Headers para API
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header('Content-Type: application/json; charset=utf-8');
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header('Access-Control-Allow-Origin: *');
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header('Access-Control-Allow-Methods: GET, POST');
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header('Access-Control-Allow-Headers: Content-Type');
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class WhatsAppWebhook {
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private $db;
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private $whatsappService;
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private $botService;
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public function __construct() {
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error_log('[webhook] __construct start');
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try {
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$this->db = Database::getInstance();
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$this->whatsappService = new WhatsAppService();
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$this->botService = new BotService();
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} catch (Throwable $t) {
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error_log('[webhook] constructor failed: ' . $t->getMessage());
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if (function_exists('writeLog')) {
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writeLog('ERROR', 'Webhook constructor failed: ' . $t->getMessage(), ['trace' => $t->getTraceAsString()]);
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}
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throw $t;
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}
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error_log('[webhook] __construct end');
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}
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public function handleRequest() {
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error_log('[webhook] handleRequest start, method=' . ($_SERVER['REQUEST_METHOD'] ?? 'unknown'));
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$method = $_SERVER['REQUEST_METHOD'];
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if ($method === 'GET') {
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$this->verifyWebhook();
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} elseif ($method === 'POST') {
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$this->processIncomingMessage();
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} else {
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http_response_code(405);
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echo json_encode(['error' => 'Método no permitido']);
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}
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}
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private function verifyWebhook() {
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$verifyToken = $_GET['hub_verify_token'] ?? '';
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$challenge = $_GET['hub_challenge'] ?? '';
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$mode = $_GET['hub_mode'] ?? '';
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if ($mode === 'subscribe' && $verifyToken === WEBHOOK_VERIFY_TOKEN) {
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echo $challenge;
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exit;
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} else {
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http_response_code(403);
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echo json_encode(['error' => 'Token de verificación inválido']);
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}
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}
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private function processIncomingMessage() {
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$input = file_get_contents('php://input');
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$data = json_decode($input, true);
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// Registrar webhook en logs
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$this->logWebhook($input, json_encode(['status' => 'received']), 200);
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if (!$data || !isset($data['entry'])) {
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http_response_code(400);
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echo json_encode(['error' => 'Datos inválidos']);
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return;
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}
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try {
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foreach ($data['entry'] as $entry) {
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if (isset($entry['changes'])) {
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foreach ($entry['changes'] as $change) {
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// Soportar payloads con field 'conversations' y 'messages' (WhatsApp puede variar)
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if ($change['field'] === 'conversations' || $change['field'] === 'messages' || isset($change['value']['messages'])) {
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$this->processconversations($change['value']);
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}
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}
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}
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}
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echo json_encode(['status' => 'success']);
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} catch (Exception $e) {
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error_log("Error processing webhook: " . $e->getMessage());
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http_response_code(500);
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echo json_encode(['error' => 'Error interno del servidor']);
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}
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}
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private function processconversations($value) {
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// Aceptar tanto payloads con 'conversations' como con 'messages' (WhatsApp varía según la integración)
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$items = [];
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if (isset($value['conversations']) && is_array($value['conversations'])) {
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$items = $value['conversations'];
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} elseif (isset($value['messages']) && is_array($value['messages'])) {
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$items = $value['messages'];
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} else {
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return;
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}
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foreach ($items as $message) {
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// En algunos payloads la estructura key es 'from' y 'id' (mensajes), en otros puede venir distinta; normalizamos
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$phoneNumber = $message['from'] ?? ($message['wa_id'] ?? null);
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$messageId = $message['id'] ?? ($message['message_id'] ?? null);
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$timestamp = $message['timestamp'] ?? null;
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// Si falta lo crítico, saltar
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if (empty($phoneNumber) || empty($messageId)) {
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continue;
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}
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// Verificar si ya procesamos este mensaje
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$existing = $this->db->fetch(
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"SELECT id FROM conversations WHERE message_id = :message_id",
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['message_id' => $messageId]
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);
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if ($existing) {
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continue; // Ya procesamos este mensaje
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}
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// Obtener o crear usuario
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$user = $this->getUserByPhone($phoneNumber);
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if (!$user) {
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$userId = $this->createUser($phoneNumber);
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$user = $this->getUserById($userId);
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}
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// Procesar diferentes tipos de mensaje
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$messageText = '';
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$messageType = 'text';
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$mediaUrl = null;
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if (isset($message['reaction']) || (isset($message['type']) && $message['type'] === 'reaction')) {
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// Reacción (emoji) a un mensaje anterior
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$messageType = 'reaction';
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$emoji = $message['reaction']['emoji'] ?? ($message['emoji'] ?? '');
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$reactionTo = $message['reaction']['message_id'] ?? ($message['context']['id'] ?? '');
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$messageText = json_encode(['emoji' => $emoji, 'message_id' => $reactionTo]);
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// Guardar campos específicos para reacciones
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$extraFields = [
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'reaction_to_message_id' => $reactionTo ? intval($reactionTo) : null,
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'reaction_emoji' => $emoji
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];
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} elseif (isset($message['text']) || ($message['type'] ?? '') === 'text') {
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$messageText = isset($message['text']['body']) ? $message['text']['body'] : ($message['body'] ?? '');
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$messageType = 'text';
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} elseif (isset($message['image'])) {
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$messageText = $message['image']['caption'] ?? '';
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$messageType = 'image';
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// Preferir URL directo si viene en el webhook (evita resolver media_id)
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$mediaUrl = $message['image']['url'] ?? ($message['image']['id'] ?? null);
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$mimeType = $message['image']['mime_type'] ?? null;
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$filename = $message['image']['filename'] ?? null;
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} elseif (isset($message['audio'])) {
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$messageType = 'audio';
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$mediaUrl = $message['audio']['url'] ?? ($message['audio']['id'] ?? null);
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$mimeType = $message['audio']['mime_type'] ?? null;
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$filename = $message['audio']['filename'] ?? null;
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} elseif (isset($message['video'])) {
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$messageText = $message['video']['caption'] ?? '';
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$messageType = 'video';
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$mediaUrl = $message['video']['url'] ?? ($message['video']['id'] ?? null);
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$mimeType = $message['video']['mime_type'] ?? null;
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$filename = $message['video']['filename'] ?? null;
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} elseif (isset($message['document'])) {
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$messageText = $message['document']['filename'] ?? '';
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$messageType = 'document';
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$mediaUrl = $message['document']['url'] ?? ($message['document']['id'] ?? null);
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$mimeType = $message['document']['mime_type'] ?? null;
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$filename = $message['document']['filename'] ?? null;
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}
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// Log debug (temporal) para verificar cómo llegan media_url/filename
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error_log(sprintf('[webhook] messageId=%s type=%s mediaUrl=%s filename=%s mime=%s', $messageId, $messageType, $mediaUrl ?? 'NULL', $filename ?? 'NULL', $mimeType ?? 'NULL'));
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// Guardar mensaje en base de datos
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$saveData = [
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'user_id' => $user['id'],
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'message_id' => $messageId,
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'direction' => 'incoming',
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'message_type' => $messageType,
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'content' => $messageText,
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'media_url' => $mediaUrl,
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'filename' => isset($filename) ? $filename : null,
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'mime_type' => isset($mimeType) ? $mimeType : null,
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'status' => 'received',
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'is_read' => 0
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];
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// Si el mensaje incluye contexto (es respuesta a otro mensaje)
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if (isset($message['context']) && isset($message['context']['id'])) {
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$saveData['reply_to_message_id'] = $message['context']['id'];
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}
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// Añadir campos extra (si se detectaron)
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if (isset($extraFields) && is_array($extraFields)) {
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$saveData = array_merge($saveData, $extraFields);
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}
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$this->saveMessage($saveData);
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// Crear notificación para UI (nuevo mensaje entrante)
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try {
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$this->db->insert('notifications', [
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'user_id' => $user['id'],
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'type' => 'incoming_message',
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'message' => substr($messageText, 0, 250),
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'data' => json_encode(['message_id' => $messageId]),
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'is_read' => 0,
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'created_at' => date('Y-m-d H:i:s')
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]);
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} catch (Exception $e) {
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error_log('Failed to create notification: ' . $e->getMessage());
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}
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// Procesar con bot (protección contra excepciones externas)
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try {
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$this->botService->processMessage($user, $messageText, $messageType);
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} catch (Exception $e) {
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error_log("Bot processing failed: " . $e->getMessage());
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}
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}
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// Procesar estados de mensajes (entregado, leído, etc.)
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if (isset($value['statuses'])) {
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$this->processconversationstatuses($value['statuses']);
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}
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}
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private function processconversationstatuses($statuses) {
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foreach ($statuses as $status) {
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$messageId = $status['id'];
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$newStatus = $status['status']; // sent, delivered, read, failed
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$this->db->update(
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'conversations',
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['status' => $newStatus],
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'message_id = :message_id',
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['message_id' => $messageId]
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);
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}
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}
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private function getUserByPhone($phoneNumber) {
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return $this->db->fetch(
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"SELECT * FROM users WHERE phone_number = :phone",
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['phone' => $phoneNumber]
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);
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}
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private function getUserById($userId) {
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return $this->db->fetch(
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"SELECT * FROM users WHERE id = :id",
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['id' => $userId]
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);
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}
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private function createUser($phoneNumber, $sendWelcome = true) {
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$id = $this->db->insert('users', [
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'phone_number' => $phoneNumber,
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'status' => 'active',
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'created_at' => date('Y-m-d H:i:s')
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]);
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if ($sendWelcome && $id) {
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try {
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// Enviar mensaje de bienvenida usando el BotService (que consulta system_config)
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$this->botService->sendWelcomeMessage($phoneNumber);
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} catch (Throwable $t) {
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error_log('Failed to send welcome message: ' . $t->getMessage());
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}
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}
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return $id;
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}
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private function saveMessage($messageData) {
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return $this->db->insert('conversations', $messageData);
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}
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private function logWebhook($requestBody, $responseBody, $statusCode) {
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if (ENABLE_LOGGING) {
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$this->db->insert('webhook_logs', [
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'request_body' => $requestBody,
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'response_body' => $responseBody,
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'status_code' => $statusCode,
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'ip_address' => $_SERVER['REMOTE_ADDR'] ?? 'unknown',
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'created_at' => date('Y-m-d H:i:s')
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]);
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}
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}
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/**
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* Procesar un payload (array) recibido manualmente (replay)
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* Útil para reproducir entradas desde la UI o scripts.
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*/
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public function processPayload(array $data) {
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error_log("processPayload START");
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// Registrar como recibido (reproducción)
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$this->logWebhook(json_encode($data), json_encode(['status' => 'replayed']), 200);
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if (empty($data) || !isset($data['entry'])) {
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error_log("processPayload: empty or missing entry");
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return false;
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}
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foreach ($data['entry'] as $entry) {
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if (isset($entry['changes'])) {
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foreach ($entry['changes'] as $change) {
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error_log("processPayload: processing change field=" . ($change['field'] ?? ''));
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if ((($change['field'] ?? '') === 'conversations' || ($change['field'] ?? '') === 'messages' || isset($change['value']['messages'])) && isset($change['value'])) {
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try {
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$this->processconversations($change['value']);
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} catch (Exception $e) {
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error_log("processPayload: processconversations failed: " . $e->getMessage());
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}
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}
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}
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}
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}
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error_log("processPayload END");
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return true;
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}
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}
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// Procesar la solicitud (solo si no estamos en CLI)
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if (php_sapi_name() !== 'cli') {
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try {
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$webhook = new WhatsAppWebhook();
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$webhook->handleRequest();
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} catch (Throwable $t) {
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// Manejar excepciones fatales y errores (Throwable)
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error_log("Fatal error in webhook: " . $t->getMessage());
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error_log($t->getTraceAsString());
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if (function_exists('writeLog')) {
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writeLog('ERROR', 'Fatal error in webhook: ' . $t->getMessage(), ['trace' => $t->getTraceAsString()]);
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}
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http_response_code(500);
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echo json_encode(['error' => 'Error fatal del servidor', 'detail' => $t->getMessage()]);
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}
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}
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?>
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