226 lines
9.5 KiB
PHP
226 lines
9.5 KiB
PHP
<?php
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/**
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* API - Obtener mensajes de un usuario específico
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* Fecha: 4 de enero de 2026
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*/
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require_once '../config/config.php';
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// Verificar autenticación
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requireAuthentication();
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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');
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header('Access-Control-Allow-Headers: Content-Type');
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try {
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$userId = intval($_GET['user_id'] ?? 0);
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if (!$userId) {
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http_response_code(400);
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echo json_encode(['error' => 'user_id es requerido']);
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exit;
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}
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// Paginación: limit y before (timestamp) - cargamos N mensajes anteriores a 'before'
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$limit = isset($_GET['limit']) ? intval($_GET['limit']) : 50;
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$limit = max(1, min(200, $limit));
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$before = !empty($_GET['before']) ? $_GET['before'] : null; // expect timestamp string
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// Validar formato de 'before' si se proporcionó (evitar SQL/parse errors por input malformado)
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if (!is_null($before)) {
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// Aceptar formato 'YYYY-MM-DD HH:MM:SS' (espacio entre fecha y hora)
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if (!preg_match('/^\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2}$/', $before)) {
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http_response_code(400);
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echo json_encode(['success' => false, 'error' => 'before timestamp inválido']);
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exit;
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}
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}
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$db = Database::getInstance();
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// Construir consulta: obtener mensajes ordenados DESC (más recientes primero) y limitar
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// Evitar ambigüedades prefijando columnas con el alias de la tabla (c)
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$sql = "SELECT
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c.id as id,
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c.user_id as user_id,
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c.content as content,
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c.message_id as message_id,
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c.media_url,
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u.phone_number as user_phone,
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c.direction as direction,
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c.message_type as message_type,
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c.status as status,
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c.created_at as created_at,
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COALESCE(c.is_read, 0) as is_read,
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c.reply_to_message_id as reply_to_message_id,
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c.reaction_emoji as reaction_emoji,
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c.reaction_to_message_id as reaction_to_message_id
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FROM conversations c
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LEFT JOIN users u ON c.user_id = u.id
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WHERE c.user_id = :user_id";
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// Soporte para paginación estable: before (timestamp) y before_id (id del mensaje más antiguo del bloque)
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$beforeId = isset($_GET['before_id']) ? intval($_GET['before_id']) : null;
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$params = ['user_id' => $userId];
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if ($before) {
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$sql .= " AND (c.created_at < :before";
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$params['before'] = $before;
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if ($beforeId) {
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// Incluir mensajes con mismo timestamp pero id menor (paginación estable)
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$sql .= " OR (c.created_at = :before AND c.id < :before_id)";
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$params['before_id'] = $beforeId;
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}
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$sql .= ")";
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}
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$sql .= " ORDER BY c.created_at DESC, c.id DESC LIMIT " . $limit;
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// Log params/consulta para diagnóstico si algo falla (no sensible)
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error_log('get_user_messages.php - params: ' . json_encode(['user_id' => $userId, 'limit' => $limit, 'before' => $before]));
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error_log('get_user_messages.php - executing SQL: ' . $sql . ' params: ' . json_encode($params));
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$conversations = $db->fetchAll($sql, $params);
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// Si no hay mensajes, intentar fallback si se pidió paginación con 'before'
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if (empty($conversations) && $before) {
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error_log('get_user_messages.php - initial query returned empty, attempting fallback with inclusive <= for before param');
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try {
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$sqlFallback = str_replace('c.created_at < :before', 'c.created_at <= :before', $sql);
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$conversationsFallback = $db->fetchAll($sqlFallback, $params);
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if (!empty($conversationsFallback)) {
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error_log('get_user_messages.php - fallback query returned ' . count($conversationsFallback) . ' rows');
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$conversations = $conversationsFallback;
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}
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} catch (Exception $e) {
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error_log('get_user_messages.php - fallback query failed: ' . $e->getMessage());
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}
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}
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// Si todavía no hay mensajes, devolver array vacío
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if (empty($conversations)) {
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echo json_encode(['success' => true, 'data' => [], 'has_more' => false], JSON_UNESCAPED_UNICODE | JSON_PARTIAL_OUTPUT_ON_ERROR);
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exit;
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}
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// Queremos devolver los mensajes en orden cronológico ascendente para la UI
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$conversations = array_reverse($conversations);
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// Recalcular usando el resultado final para decidir paginación
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$finalCount = is_array($conversations) ? count($conversations) : 0;
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$hasMore = ($finalCount > 0 && $finalCount == $limit) ? true : false;
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// Si no hay mensajes en conversations, intentar con conversaciones (compatibilidad antigua)
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if (empty($conversations)) {
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$conversations = $db->fetchAll(
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"SELECT
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id,
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user_id,
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message_text as content,
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direction,
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message_type,
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status,
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created_at
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FROM conversations
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WHERE user_id = :user_id
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ORDER BY created_at ASC",
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['user_id' => $userId]
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);
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}
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// Formatear fechas y limpiar datos
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$conversations = array_map(function($msg) {
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$external = (isset($msg['media_url']) && $msg['media_url']) ? (preg_match('#^https?://#i', $msg['media_url']) ? $msg['media_url'] : ("api/get_media.php?id=" . urlencode($msg['media_url']))) : null;
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$contentStr = $msg['content'] ?? '';
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if (!$external && $contentStr) {
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$j = json_decode($contentStr, true);
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if (is_array($j)) {
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foreach (['image','document','audio','video'] as $k) {
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if (isset($j[$k]) && is_array($j[$k])) {
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if (!empty($j[$k]['link'])) { $external = $j[$k]['link']; break; }
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if (!empty($j[$k]['url'])) { $external = $j[$k]['url']; break; }
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if (!empty($j[$k]['id'])) { $external = "api/get_media.php?id=" . urlencode($j[$k]['id']); break; }
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}
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}
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if (!$external && !empty($j['link'])) $external = $j['link'];
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}
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}
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return [
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'id' => intval($msg['id']),
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'user_id' => intval($msg['user_id']),
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'content' => $msg['content'] ?? '',
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'message_id' => $msg['message_id'] ?? null,
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'media_url' => null,
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'local_file' => $msg['local_file'] ?? null,
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'local_thumb' => $msg['local_thumb'] ?? null,
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'media_url_external' => $external,
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'filename' => $msg['filename'] ?? null,
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'mime_type' => $msg['mime_type'] ?? null,
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'user_phone' => $msg['user_phone'] ?? null,
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'direction' => $msg['direction'] ?? 'incoming',
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'message_type' => $msg['message_type'] ?? 'text',
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'status' => $msg['status'] ?? 'sent',
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'created_at' => $msg['created_at'],
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'reply_to_message_id' => $msg['reply_to_message_id'] ?? null,
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'reaction_emoji' => $msg['reaction_emoji'] ?? null,
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'reaction_to_message_id' => $msg['reaction_to_message_id'] ?? null
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];
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}, $conversations);
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// earliest message timestamp (para paginación hacia atrás)
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$earliest = $conversations[0]['created_at'] ?? null;
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$earliestId = $conversations[0]['id'] ?? null;
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// Si usamos fallback y el earliest coincide o es >= al 'before' solicitado,
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// decrementamos 1 segundo para evitar que la próxima petición repita el mismo bloque
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$fallbackUsed = (isset($conversationsFallback) && !empty($conversationsFallback));
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if ($fallbackUsed && $earliest && $before) {
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$earliest_ts = strtotime($earliest);
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$before_ts = strtotime($before);
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if ($earliest_ts !== false && $before_ts !== false && $earliest_ts >= $before_ts) {
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// restar 1 segundo
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$earliest = date('Y-m-d H:i:s', $earliest_ts - 1);
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error_log('get_user_messages.php - adjusted earliest to avoid duplicate pagination: ' . $earliest);
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}
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}
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// Recalculate final_count for debug
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$finalCount = is_array($conversations) ? count($conversations) : 0;
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// Añadir debug information cuando se solicita (solo con ?debug=1)
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$debugInfo = null;
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if (!empty($_GET['debug']) && $_GET['debug'] == '1') {
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$debugInfo = [
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'original_sql' => substr($sql, 0, 2000),
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'params' => $params,
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'final_count' => $finalCount,
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'fallback_used' => $fallbackUsed,
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'fallback_count' => $fallbackUsed ? count($conversationsFallback) : 0
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];
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}
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$out = ['success' => true, 'data' => $conversations, 'has_more' => $hasMore, 'earliest' => $earliest, 'earliest_id' => $earliestId];
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if ($debugInfo) $out['debug'] = $debugInfo;
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echo json_encode($out, JSON_UNESCAPED_UNICODE | JSON_PARTIAL_OUTPUT_ON_ERROR);
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} catch (Exception $e) {
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// Log detallado con stack trace para diagnóstico
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error_log("Error in get_user_messages.php: " . $e->getMessage() . "\n" . $e->getTraceAsString());
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http_response_code(500);
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// Responder con detalle sólo si se pasa ?debug=1 (NO activar en producción)
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if (!empty($_GET['debug']) && $_GET['debug'] == '1') {
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echo json_encode([
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'error' => 'Error interno del servidor',
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'details' => $e->getMessage(),
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'trace' => explode("\n", $e->getTraceAsString())
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]);
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} else {
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echo json_encode(['error' => 'Error interno del servidor']);
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}
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}
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?>
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