<?php
ini_set('display_errors', 0);
ini_set('display_startup_errors', 0);
ini_set('log_errors', 1);
error_reporting(E_ALL);

// Autoload si existe
$autoload = __DIR__ . '/../vendor/autoload.php';
if (file_exists($autoload)) {
    require_once $autoload;
}

// Cargar variables de entorno
if (class_exists('Dotenv\\Dotenv')) {
    $envPath = dirname(__DIR__);
    if (is_dir($envPath)) {
        $dotenv = Dotenv\Dotenv::createImmutable($envPath);
        $dotenv->safeLoad();
    }
}

// Utilidades
function envv($key, $default = null) {
    $val = getenv($key);
    if ($val === false && isset($_ENV[$key])) $val = $_ENV[$key];
    return $val !== false && $val !== null ? $val : $default;
}

// Cabeceras CORS y respuesta JSON unificada
if (!defined('NON_JSON')) {
    header('Content-Type: application/json; charset=utf-8');
}
$allowOrigin = envv('CORS_ALLOW_ORIGIN', '*');
header('Access-Control-Allow-Origin: ' . $allowOrigin);
header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
header('Access-Control-Allow-Headers: Content-Type, Authorization, X-ESP-Dispositivos-Token');

if ($_SERVER['REQUEST_METHOD'] === 'OPTIONS') {
    http_response_code(204);
    exit;
}

function json_success($data = null, $message = 'OK', $code = 200) {
    http_response_code($code);
    echo json_encode([
        'success' => true,
        'message' => $message,
        'data' => $data
    ], JSON_UNESCAPED_UNICODE);
    exit;
}

function json_error($message = 'Error', $code = 400, $data = null) {
    http_response_code($code);
    echo json_encode([
        'success' => false,
        'message' => $message,
        'data' => $data
    ], JSON_UNESCAPED_UNICODE);
    exit;
}

function json_response($success, $data = null, $message = '', $code = 200) {
    http_response_code($code);
    echo json_encode([
        'success' => $success,
        'data' => $data,
        'message' => $message,
        'timestamp' => time()
    ], JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
    exit;
}