<?php
// Router file for PHP development server - clean URL support + static file serving

$requestUri = $_SERVER['REQUEST_URI'];
$parsedUrl = parse_url($requestUri);
$path = $parsedUrl['path'] ?? '/';
$path = rtrim($path, '/') ?: '/';
$publicDir = __DIR__ . '/../public';

$mimeTypes = [
    'css' => 'text/css',
    'js'  => 'application/javascript',
    'svg' => 'image/svg+xml',
    'png' => 'image/png',
    'jpg' => 'image/jpeg',
    'ico' => 'image/x-icon',
    'woff' => 'font/woff',
    'woff2' => 'font/woff2',
    'json' => 'application/json',
];

// Serve static files from public/
$filePath = $publicDir . $path;
if (is_file($filePath)) {
    $ext = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
    if (isset($mimeTypes[$ext])) {
        header('Content-Type: ' . $mimeTypes[$ext]);
    }
    readfile($filePath);
    return true;
}

// Serve theme assets from the themes/ directory (e.g. /themes/default/js/theme.js)
if (preg_match('#^/themes/([^/]+)/(.+)$#', $path, $m)) {
    $themeName = $m[1];
    $themeRel = $m[2];
    $themesDir = __DIR__ . '/../themes';
    $themeFile = $themesDir . '/' . $themeName . '/' . $themeRel;
    $realThemes = realpath($themesDir);
    $realFile = realpath($themeFile);
    if ($realFile && $realThemes && strpos($realFile, $realThemes) === 0 && is_file($realFile)) {
        $ext = strtolower(pathinfo($realFile, PATHINFO_EXTENSION));
        if (isset($mimeTypes[$ext])) {
            header('Content-Type: ' . $mimeTypes[$ext]);
        }
        readfile($realFile);
        return true;
    }
    http_response_code(404);
    return true;
}

// Serve admin theme assets (e.g. /admin/assets/css/bootstrap.min.js)
// Served from admin/theme/default/assets/
if (preg_match('#^/admin/assets/(.+)$#', $path, $m)) {
    $assetPath = $m[1];
    $adminThemeDir = __DIR__ . '/../admin/theme/default/assets';
    $assetFile = $adminThemeDir . '/' . $assetPath;
    $realAdminTheme = realpath($adminThemeDir);
    $realFile = realpath($assetFile);
    if ($realFile && $realAdminTheme && strpos($realFile, $realAdminTheme) === 0 && is_file($realFile)) {
        $ext = strtolower(pathinfo($realFile, PATHINFO_EXTENSION));
        if (isset($mimeTypes[$ext])) {
            header('Content-Type: ' . $mimeTypes[$ext]);
        }
        readfile($realFile);
        return true;
    }
    http_response_code(404);
    return true;
}

// Serve plugin assets (e.g. /plugins/Navigation/assets/css/navigation.css)
if (preg_match('#^/plugins/([^/]+)/assets/(.+)$#', $path, $m)) {
    $pluginName = $m[1];
    $assetPath = $m[2];
    $pluginAssetDir = __DIR__ . '/../plugins/' . $pluginName . '/assets';
    $assetFile = $pluginAssetDir . '/' . $assetPath;
    $realPluginDir = realpath($pluginAssetDir);
    $realFile = realpath($assetFile);
    if ($realFile && $realPluginDir && strpos($realFile, $realPluginDir) === 0 && is_file($realFile)) {
        $ext = strtolower(pathinfo($realFile, PATHINFO_EXTENSION));
        if (isset($mimeTypes[$ext])) {
            header('Content-Type: ' . $mimeTypes[$ext]);
        }
        readfile($realFile);
        return true;
    }
    http_response_code(404);
    return true;
}

// Admin routes: /admin/login → admin.php?route=login
if (preg_match('#^/admin(?:/(.+))?$#', $path, $m)) {
    $_GET['route'] = $m[1] ?? 'dashboard';
    require $publicDir . '/admin.php';
    return true;
}

// Language-prefixed routes: /nl/page/path → index.php?lang=nl&page=page/path
if (preg_match('#^/(nl|en)(?:/(.+))?$#', $path, $m)) {
    $_GET['lang'] = $m[1];
    if (isset($m[2]) && $m[2] !== '') {
        if ($m[2] === 'guide') {
            // /nl/guide → set guide flag, keep existing ?page= from query string
            $_GET['guide'] = '1';
            if (!isset($_GET['page'])) {
                $_GET['page'] = '';
            }
        } else {
            $_GET['page'] = $m[2];
        }
    }
    require $publicDir . '/index.php';
    return true;
}

// Root or unknown → index.php
require $publicDir . '/index.php';
return true;