<?php
/**
 * Nextcloud Webhook → Redis Pub/Sub
 * 
 * Получает события от Nextcloud и публикует в Redis канал
 */

header('Content-Type: application/json');
header('Access-Control-Allow-Origin: *');

// Логирование
$logFile = '/var/log/crm_nextcloud_webhook.log';

function logWebhook($message) {
    global $logFile;
    $timestamp = date('Y-m-d H:i:s');
    @file_put_contents($logFile, "[$timestamp] $message\n", FILE_APPEND | LOCK_EX);
}

// Проверяем метод запроса
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    http_response_code(405);
    echo json_encode(['error' => 'Method not allowed']);
    exit;
}

// Получаем данные webhook
$input = file_get_contents('php://input');
$data = json_decode($input, true);

logWebhook("Webhook received: " . $input);

if (!$data) {
    http_response_code(400);
    echo json_encode(['error' => 'Invalid JSON']);
    exit;
}

// Проверяем обязательные поля
if (!isset($data['action']) || !isset($data['file_path'])) {
    http_response_code(400);
    echo json_encode(['error' => 'Missing required fields']);
    exit;
}

$action = $data['action'];
$filePath = $data['file_path'];
$projectId = $data['project_id'] ?? null;

logWebhook("Processing action: $action, path: $filePath, project: $projectId");

// Создаем событие
$event = [
    'type' => $action,
    'data' => [
        'module' => 'Project',
        'recordId' => $projectId ?: '123',
        'documentId' => '456',
        'fileName' => basename($filePath)
    ],
    'timestamp' => time()
];

// Публикуем в Redis
try {
    $redis = new Redis();
    
    if (!$redis->connect('127.0.0.1', 6379)) {
        throw new Exception('Failed to connect to Redis');
    }
    
    // Аутентификация (в старых версиях Redis extension auth() может не возвращать результат)
    try {
        $redis->auth('CRM_Redis_Pass_2025_Secure!');
    } catch (RedisException $e) {
        throw new Exception('Redis authentication failed: ' . $e->getMessage());
    }
    
    // Публикуем в канал
    $channel = 'crm:file:events';
    $subscribers = $redis->publish($channel, json_encode($event));
    
    logWebhook("Event published to Redis: " . json_encode($event) . " (subscribers: $subscribers)");
    
    $redis->close();
    
    http_response_code(200);
    echo json_encode([
        'status' => 'success', 
        'message' => 'Event published to Redis',
        'subscribers' => $subscribers
    ]);
    
} catch (Exception $e) {
    logWebhook("ERROR: Redis publish failed: " . $e->getMessage());
    http_response_code(500);
    echo json_encode([
        'status' => 'error', 
        'message' => $e->getMessage()
    ]);
}
?>