<?php
/**
 * Fociz Centrale Applicatie- en Databaseconfiguratie
 * Alle configuratie staat overzichtelijk en veilig in dit ene bestand.
 */

// Blokkeer directe HTTP toegang tot dit configuratiebestand (Pen Test Beveiliging)
if (basename($_SERVER['SCRIPT_FILENAME'] ?? '') === 'config.php') {
    http_response_code(403);
    exit('Toegang geweigerd.');
}

// Stuur direct strenge beveiligingsheaders mee op elk verzoek (Pen Test Beveiliging)
if (!headers_sent()) {
    header('X-Content-Type-Options: nosniff');
    header('X-Frame-Options: SAMEORIGIN');
    header('X-XSS-Protection: 1; mode=block');
    header('Referrer-Policy: strict-origin-when-cross-origin');
    header('Permissions-Policy: camera=(), microphone=(), geolocation=()');
    header("Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.tailwindcss.com https://unpkg.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' data: https://fonts.gstatic.com; img-src 'self' data: https:; connect-src 'self'; frame-ancestors 'self'; base-uri 'self'; form-action 'self'");
    if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') {
        header('Strict-Transport-Security: max-age=31536000; includeSubDomains');
    }
    header_remove('X-Powered-By');
}
@ini_set('expose_php', 'off');

// 1. .env inlezing (controleert zowel config/.env als hoofdmap .env)
$envVars = [];
$envLocations = [__DIR__ . '/.env', __DIR__ . '/../.env'];
foreach ($envLocations as $envFile) {
    if (file_exists($envFile)) {
        $lines = file($envFile, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
        if ($lines !== false) {
            foreach ($lines as $line) {
                $line = trim($line);
                if ($line === '' || str_starts_with($line, '#') || str_starts_with($line, '//')) {
                    continue;
                }
                if (strpos($line, '=') !== false) {
                    list($name, $value) = explode('=', $line, 2);
                    $name = trim($name);
                    $value = trim($value, " \t\n\r\0\x0B\"'");
                    $envVars[$name] = $value;
                    $_ENV[$name] = $value;
                    $_SERVER[$name] = $value;
                    @putenv("{$name}={$value}");
                }
            }
        }
        break; // Eerste gevonden .env bestand is leidend
    }
}

/**
 * Veilige helper om een omgevingsvariabele op te vragen
 */
if (!function_exists('fociz_env')) {
    function fociz_env(string $key, $default = null) {
        global $envVars;
        if (isset($envVars[$key]) && $envVars[$key] !== '') {
            return $envVars[$key];
        }
        if (isset($_ENV[$key]) && $_ENV[$key] !== '') {
            return $_ENV[$key];
        }
        if (isset($_SERVER[$key]) && $_SERVER[$key] !== '') {
            return $_SERVER[$key];
        }
        $val = @getenv($key);
        if ($val !== false && $val !== '') {
            return $val;
        }
        return $default;
    }
}

// =========================================================================
// 2. APPLICATIE INSTELLINGEN & OMGEVINGSDETECTIE
// =========================================================================
define('APP_NAME', 'Fociz');

// Automatische omgevingsdetectie:
// 1. Expliciete .env variabele 'APP_ENV'
// 2. Automatisch 'development' indien hostname 'dev.' of 'localhost' bevat
// 3. Standaard 'live'
$detectedHost = $_SERVER['HTTP_HOST'] ?? '';
$isDevHost = (
    str_contains($detectedHost, 'dev.') || 
    str_contains($detectedHost, 'localhost') || 
    str_contains($detectedHost, '127.0.0.1')
);
$defaultEnv = $isDevHost ? 'development' : 'live';
define('APP_ENV', fociz_env('APP_ENV', $defaultEnv));
define('APP_SECRET', fociz_env('APP_SECRET', 'fociz-maria-db-super-secret-key-998877'));

// =========================================================================
// 3. CENTRALE DATABASE CONFIGURATIE (OMGEVINGSAFHANKELIJK & GIT-VEILIG)
// =========================================================================
// Leest eerst eventuele .env variabelen (die per server uniek en gitignored zijn).
// Indien niet ingesteld via .env, wordt automatisch de juiste database gekozen op basis van APP_ENV.
$isDevEnv = (APP_ENV === 'development');
define('DB_HOST', fociz_env('DB_HOST', '192.168.2.33'));
define('DB_PORT', fociz_env('DB_PORT', '3306'));
define('DB_NAME', fociz_env('DB_NAME', $isDevEnv ? 'focizdev' : 'fociz'));
define('DB_USER', fociz_env('DB_USER', $isDevEnv ? 'focizdev_user' : 'focizlive_user'));
define('DB_PASS', fociz_env('DB_PASS', $isDevEnv ? 'F0c1z_Dev_Secure_2026!' : 'F0c1z_Live_Secure_2026!'));
define('DB_CHARSET', 'utf8mb4');

// Bepaal de dynamische of geconfigureerde applicatie URL
if (!function_exists('fociz_detect_app_url')) {
    function fociz_detect_app_url(): string {
        $envUrl = fociz_env('APP_URL');
        if (!empty($envUrl) && !str_contains($envUrl, 'uw-domein.nl')) {
            return rtrim($envUrl, '/');
        }

        // Dynamische detectie op basis van het huidige domein (werkt direct op www.fociz.nl én dev.fociz.nl)
        if (!empty($_SERVER['HTTP_HOST'])) {
            $isHttps = (
                (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ||
                (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']) && strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) === 'https') ||
                (!empty($_SERVER['HTTP_X_FORWARDED_SSL']) && $_SERVER['HTTP_X_FORWARDED_SSL'] === 'on') ||
                (isset($_SERVER['SERVER_PORT']) && (int)$_SERVER['SERVER_PORT'] === 443)
            );
            $scheme = $isHttps ? 'https://' : 'http://';
            return $scheme . $_SERVER['HTTP_HOST'];
        }

        return (defined('APP_ENV') && APP_ENV === 'live') ? 'https://www.fociz.nl' : 'https://dev.fociz.nl';
    }
}
define('APP_URL', fociz_detect_app_url());

// Tijdzone
date_default_timezone_set('Europe/Amsterdam');

// =========================================================================
// 3b. SMTP MAIL SERVER CONFIGURATIE
// =========================================================================
define('SMTP_HOST', fociz_env('SMTP_HOST', 'mail.fociz.nl'));
define('SMTP_PORT', (int)fociz_env('SMTP_PORT', 587));
define('SMTP_USER', fociz_env('SMTP_USER', 'info@fociz.nl'));
define('SMTP_PASS', fociz_env('SMTP_PASS', '6swpQSBg5uWFmjar7F6a'));
define('SMTP_SECURE', fociz_env('SMTP_SECURE', 'tls')); // 'tls' (STARTTLS port 587) of 'ssl' (port 465)
define('SMTP_FROM_EMAIL', fociz_env('SMTP_FROM_EMAIL', 'info@fociz.nl'));
define('SMTP_FROM_NAME', fociz_env('SMTP_FROM_NAME', 'Fociz'));
define('SMTP_REPLY_TO', fociz_env('SMTP_REPLY_TO', 'info@fociz.nl'));

// =========================================================================
// 4. VEILIGE FOUTAFHANDELING & PEN TEST BESCHERMING
// =========================================================================
if (APP_ENV === 'live') {
    ini_set('display_errors', '0');
    ini_set('display_startup_errors', '0');
    error_reporting(E_ALL & ~E_DEPRECATED & ~E_STRICT);

    // Registreer een nette noodfoutpagina voor onverhoopte fatale PHP fouten
    register_shutdown_function(function() {
        $error = error_get_last();
        if ($error && in_array($error['type'], [E_ERROR, E_CORE_ERROR, E_COMPILE_ERROR, E_PARSE])) {
            error_log("Fociz Fatal Error: [{$error['type']}] {$error['message']} in {$error['file']}:{$error['line']}");
            $showDiagnostics = (isset($_SESSION['user_role']) && $_SESSION['user_role'] === 'ADMIN');
            if ($showDiagnostics) {
                echo "<div style='font-family: monospace; background: #0c0f17; color: #ef4444; padding: 25px; margin: 20px; border-radius: 12px; border: 1px solid #dc2626;'>
                    <h3>⚠️ Fociz Systeemfout (Diagnostiek)</h3>
                    <p><strong>Fout:</strong> " . htmlspecialchars($error['message']) . "</p>
                    <p><strong>Bestand:</strong> " . htmlspecialchars($error['file']) . " op regel " . $error['line'] . "</p>
                </div>";
            } else {
                echo "<div style='font-family: sans-serif; background: #0c0f17; color: #f8fafc; min-height: 100vh; display: flex; align-items: center; justify-content: center;'>
                    <div style='max-width: 480px; text-align: center; padding: 40px;'>
                        <div style='width: 48px; height: 48px; margin: 0 auto 16px; border-radius: 12px; background: rgba(99, 102, 241, 0.1); border: 1px solid rgba(99, 102, 241, 0.3); display: flex; align-items: center; justify-content: center; color: #818cf8; font-weight: bold;'>F</div>
                        <h2 style='font-size: 20px; margin-bottom: 8px;'>Er is iets misgegaan</h2>
                        <p style='color: #94a3b8; font-size: 14px; line-height: 1.5;'>De pagina kon niet worden geladen. Probeer de pagina te vernieuwen of log opnieuw in.</p>
                        <a href='/auth/login.php' style='display: inline-block; margin-top: 20px; padding: 10px 20px; border-radius: 8px; background: #4f46e5; color: white; text-decoration: none; font-size: 13px; font-weight: 600;'>Naar Inloggen</a>
                    </div>
                </div>";
            }
        }
    });
} else {
    ini_set('display_errors', '1');
    ini_set('display_startup_errors', '1');
    error_reporting(E_ALL);
}