<?php
declare(strict_types=1);

// Erreurs en JSON, jamais en HTML — pour ne plus avoir d'écran Apache 500 opaque.
ini_set('display_errors', '0');
ini_set('log_errors', '1');

set_error_handler(function ($severity, $message, $file, $line) {
    if (!(error_reporting() & $severity)) return false;
    throw new ErrorException($message, 0, $severity, $file, $line);
});

set_exception_handler(function (\Throwable $e) {
    if (!headers_sent()) {
        http_response_code(500);
        header('Content-Type: application/json; charset=utf-8');
    }
    error_log('[PSLauncher] ' . $e->getMessage() . ' @ ' . $e->getFile() . ':' . $e->getLine());
    echo json_encode([
        'error'   => 'server_error',
        'message' => $e->getMessage(),
        'file'    => basename($e->getFile()),
        'line'    => $e->getLine(),
    ]);
    exit;
});

require __DIR__ . '/lib/Response.php';

use PSLauncher\Response;

// Charge la config (config.example.php est le template ; config.php est gitignored)
$configPath = __DIR__ . '/config.php';
if (!is_file($configPath)) {
    Response::error('config_missing', 'config.php absent — copier config.example.php', 500);
}
$config = require $configPath;

// La route est passée via ?route=... par le .htaccess
$route  = trim((string)($_GET['route'] ?? ''), '/');
$method = $_SERVER['REQUEST_METHOD'] ?? 'GET';

if ($method === 'GET' && ($route === '' || $route === 'manifest')) {
    // Crypto requis : depuis v0.27.0 le manifest est re-signé à la volée
    // selon le channel demandé (filtrage server-side).
    require __DIR__ . '/lib/Crypto.php';
    require __DIR__ . '/routes/Manifest.php';
    \PSLauncher\Routes\Manifest::handle($config);
    return;
}

// Release notes : accepte 'X.Y.Z' (legacy) ou id stable 'v' + 8 hex (v0.27.1+)
if ($method === 'GET' && preg_match('#^releasenotes/(v[0-9a-f]{8}|[0-9]+\.[0-9]+\.[0-9]+)$#', $route, $m)) {
    require __DIR__ . '/routes/Releasenotes.php';
    \PSLauncher\Routes\Releasenotes::handle($m[1]);
    return;
}

if ($method === 'POST' && $route === 'license/validate') {
    require __DIR__ . '/lib/Db.php';
    require __DIR__ . '/lib/Crypto.php';
    require __DIR__ . '/routes/ValidateLicense.php';
    \PSLauncher\Routes\ValidateLicense::handle($config);
    return;
}

if ($method === 'GET' && preg_match('#^download-url/([0-9]+\.[0-9]+\.[0-9]+)$#', $route, $m)) {
    require __DIR__ . '/lib/Db.php';
    require __DIR__ . '/lib/Crypto.php';
    require __DIR__ . '/routes/DownloadUrl.php';
    \PSLauncher\Routes\DownloadUrl::handle($config, $m[1]);
    return;
}

if ($method === 'GET' && $route === 'health') {
    Response::json([
        'status'        => 'ok',
        'serverTime'    => gmdate('c'),
        'phpVersion'    => PHP_VERSION,
        'configLoaded'  => is_array($config),
    ]);
}

if ($method === 'GET' && $route === 'debug') {
    Response::json([
        'status'        => 'ok',
        'route'         => $route,
        'request_uri'   => $_SERVER['REQUEST_URI'] ?? '',
        'script_name'   => $_SERVER['SCRIPT_NAME'] ?? '',
        'php'           => PHP_VERSION,
        'sodium'        => function_exists('sodium_crypto_sign_detached'),
        'pdo_mysql'     => extension_loaded('pdo_mysql'),
        'manifest_file' => is_file(dirname(__DIR__) . '/manifest/versions.json'),
    ]);
}

Response::error('not_found', "Route not found: '{$route}'", 404);