<?php

require_once 'config.php';

// Simple template rendering without Mustache for now
class SimpleTemplate {
    public static function render($template, $data) {
        // Handle partial includes first ({{>partial}})
        $template = preg_replace_callback('/{{>([^}]+)}}/', function($matches) use ($data) {
            $partialName = $matches[1];
            return $data[$partialName] ?? $matches[0];
        }, $template);
        
        // Handle conditional blocks
        foreach ($data as $key => $value) {
            if (is_array($value) || (is_string($value) && !empty($value))) {
                // Handle {{#key}}...{{/key}} blocks
                $pattern = '/{{#' . preg_quote($key, '/') . '}}(.*?){{\/' . preg_quote($key, '/') . '}}/s';
                if (preg_match($pattern, $template, $matches)) {
                    $replacement = $matches[1];
                    $template = preg_replace($pattern, $replacement, $template);
                }
                
                // Handle {{^key}}...{{/key}} blocks (negative condition)
                $pattern = '/{{\^' . preg_quote($key, '/') . '}}(.*?){{\/' . preg_quote($key, '/') . '}}/s';
                $template = preg_replace($pattern, '', $template);
            } else {
                // Handle empty blocks
                $pattern = '/{{#' . preg_quote($key, '/') . '}}.*?{{\/' . preg_quote($key, '/') . '}}/s';
                $template = preg_replace($pattern, '', $template);
                
                // Handle {{^key}}...{{/key}} blocks (show when empty)
                $pattern = '/{{\^' . preg_quote($key, '/') . '}}(.*?){{\/' . preg_quote($key, '/') . '}}/s';
                if (preg_match_all($pattern, $template, $matches)) {
                    foreach ($matches[1] as $match) {
                        $template = preg_replace('/{{\^' . preg_quote($key, '/') . '}}.*?{{\/' . preg_quote($key, '/') . '}}/s', $match, $template, 1);
                    }
                }
            }
        }
        
        // Handle variable replacements
        foreach ($data as $key => $value) {
            // Handle triple braces for unescaped HTML content
            if (strpos($template, '{{{' . $key . '}}}') !== false) {
                $template = str_replace('{{{' . $key . '}}}', $value, $template);
            }
            // Handle double braces for escaped content
            elseif (strpos($template, '{{' . $key . '}}') !== false) {
                $template = str_replace('{{' . $key . '}}', htmlspecialchars($value, ENT_QUOTES, 'UTF-8'), $template);
            }
        }
        return $template;
    }
}

$config = include 'config.php';

/**
 * CodePressCMS - Lightweight file-based content management system
 * 
 * Features:
 * - Markdown, PHP, and HTML content support
 * - Dynamic navigation with dropdown menus
 * - Search functionality
 * - Breadcrumb navigation
 * - Auto-linking between pages
 * - Configurable via JSON
 * - Responsive design with Bootstrap
 */
/**
 * CodePressCMS - Lightweight file-based content management system
 * 
 * Features:
 * - Markdown, PHP, and HTML content support
 * - Dynamic navigation with dropdown menus
 * - Search functionality
 * - Breadcrumb navigation
 * - Auto-linking between pages
 * - Configurable via JSON
 * - Responsive design with Bootstrap
 */
class CodePressCMS {
    private $config;
    private $menu = [];
    private $searchResults = [];
    
    public function __construct($config) {
        $this->config = $config;
        $this->buildMenu();
        
        if (isset($_GET['search'])) {
            $this->performSearch($_GET['search']);
        }
    }
    
    private function buildMenu() {
        $this->menu = $this->scanDirectory($this->config['content_dir'], '');
    }
    
    private function scanDirectory($dir, $prefix) {
        if (!is_dir($dir)) return [];
        
        $items = scandir($dir);
        sort($items);
        $result = [];
        
        foreach ($items as $item) {
            if ($item[0] === '.') continue;
            
            $path = $dir . '/' . $item;
            $relativePath = $prefix ? $prefix . '/' . $item : $item;
            
            if (is_dir($path)) {
                $result[] = [
                    'type' => 'folder',
                    'title' => ucfirst($item),
                    'path' => $relativePath,
                    'children' => $this->scanDirectory($path, $relativePath)
                ];
            } elseif (preg_match('/\.(md|php|html)$/', $item)) {
                $title = ucfirst(pathinfo($item, PATHINFO_FILENAME));
                $result[] = [
                    'type' => 'file',
                    'title' => $title,
                    'path' => $relativePath,
                    'url' => '?page=' . $relativePath
                ];
            }
        }
        
        return $result;
    }
    
    private function performSearch($query) {
        $this->searchResults = [];
        $this->searchInDirectory($this->config['content_dir'], '', $query);
    }
    
    private function searchInDirectory($dir, $prefix, $query) {
        if (!is_dir($dir)) return;
        
        $items = scandir($dir);
        
        foreach ($items as $item) {
            if ($item[0] === '.') continue;
            
            $path = $dir . '/' . $item;
            $relativePath = $prefix ? $prefix . '/' . $item : $item;
            
            if (is_dir($path)) {
                $this->searchInDirectory($path, $relativePath, $query);
} elseif (preg_match('/\.(md|php|html)$/', $item)) {
                $content = file_get_contents($path);
                if (stripos($content, $query) !== false || stripos($item, $query) !== false) {
                    $title = ucfirst(pathinfo($item, PATHINFO_FILENAME));
                    $this->searchResults[] = [
                        'title' => $title,
                        'path' => $relativePath,
                        'url' => '?page=' . $relativePath,
                        'snippet' => $this->createSnippet($content, $query)
                    ];
                }
            }
        }
    }
    
    private function createSnippet($content, $query) {
        $content = strip_tags($content);
        $pos = stripos($content, $query);
        if ($pos === false) return substr($content, 0, 100) . '...';
        
        $start = max(0, $pos - 50);
        $snippet = substr($content, $start, 150);
        return '...' . $snippet . '...';
    }
    
    public function getPage() {
        if (isset($_GET['search'])) {
            return $this->getSearchResults();
        }
        
        // Check if guide is requested
        if (isset($_GET['guide'])) {
            return $this->getGuidePage();
        }
        
        // Check if content directory is empty
        if ($this->isContentDirEmpty()) {
            return $this->getGuidePage();
        }
        
        $page = $_GET['page'] ?? $this->config['default_page'];
        $page = preg_replace('/\.[^.]+$/', '', $page);
        
        $filePath = $this->config['content_dir'] . '/' . $page;
        $actualFilePath = null;
        
        if (file_exists($filePath . '.md')) {
            $actualFilePath = $filePath . '.md';
            $result = $this->parseMarkdown(file_get_contents($actualFilePath));
        } elseif (file_exists($filePath . '.php')) {
            $actualFilePath = $filePath . '.php';
            $result = $this->parsePHP($actualFilePath);
        } elseif (file_exists($filePath . '.html')) {
            $actualFilePath = $filePath . '.html';
            $result = $this->parseHTML(file_get_contents($actualFilePath));
        } elseif (file_exists($filePath)) {
            $actualFilePath = $filePath;
            $extension = pathinfo($filePath, PATHINFO_EXTENSION);
            if ($extension === 'md') {
                $result = $this->parseMarkdown(file_get_contents($actualFilePath));
            } elseif ($extension === 'php') {
                $result = $this->parsePHP($actualFilePath);
            } elseif ($extension === 'html') {
                $result = $this->parseHTML(file_get_contents($actualFilePath));
            }
        }
        
        if (isset($result) && $actualFilePath) {
            $result['file_info'] = $this->getFileInfo($actualFilePath);
            return $result;
        }
        
        return $this->getError404();
    }
    
    private function getFileInfo($filePath) {
        if (!file_exists($filePath)) {
            return null;
        }
        
        $stats = stat($filePath);
        $created = date('d-m-Y H:i', $stats['ctime']);
        $modified = date('d-m-Y H:i', $stats['mtime']);
        
        return [
            'created' => $created,
            'modified' => $modified,
            'size' => $this->formatFileSize($stats['size'])
        ];
    }
    
    private function formatFileSize($bytes) {
        $units = ['B', 'KB', 'MB', 'GB'];
        $bytes = max($bytes, 0);
        $pow = floor(($bytes ? log($bytes) : 0) / log(1024));
        $pow = min($pow, count($units) - 1);
        
        $bytes /= pow(1024, $pow);
        
        return round($bytes, 2) . ' ' . $units[$pow];
    }
    
    private function getSearchResults() {
        $query = $_GET['search'];
        $content = '<h2>Search Results for: "' . htmlspecialchars($query) . '"</h2>';
        
        if (empty($this->searchResults)) {
            $content .= '<p>No results found.</p>';
        } else {
            $content .= '<p>Found ' . count($this->searchResults) . ' results:</p>';
            foreach ($this->searchResults as $result) {
                $content .= '<div class="card mb-3">';
                $content .= '<div class="card-body">';
                $content .= '<h5 class="card-title"><a href="' . htmlspecialchars($result['url']) . '">' . htmlspecialchars($result['title']) . '</a></h5>';
                $content .= '<p class="card-text text-muted">' . htmlspecialchars($result['path']) . '</p>';
                $content .= '<p class="card-text">' . htmlspecialchars($result['snippet']) . '</p>';
                $content .= '</div></div>';
            }
        }
        
        return [
            'title' => 'Search Results',
            'content' => $content
        ];
    }
    
    private function parseMarkdown($content) {
        $lines = explode("\n", $content);
        $title = '';
        $body = '';
        $inBody = false;
        
        foreach ($lines as $line) {
            if (!$inBody && preg_match('/^#\s+(.+)$/', $line, $matches)) {
                $title = $matches[1];
                $inBody = true;
            } elseif ($inBody || trim($line) !== '') {
                $body .= $line . "\n";
                $inBody = true;
            }
        }
        
        $body = preg_replace('/### (.+)/', '<h3>$1</h3>', $body);
        $body = preg_replace('/## (.+)/', '<h2>$1</h2>', $body);
        $body = preg_replace('/# (.+)/', '<h1>$1</h1>', $body);
        $body = preg_replace('/\*\*(.+?)\*\*/', '<strong>$1</strong>', $body);
        $body = preg_replace('/\*(.+?)\*/', '<em>$1</em>', $body);
        
        // Auto-link page titles to existing content pages (before markdown link processing)
        $body = $this->autoLinkPageTitles($body);
        
        // Convert Markdown links to HTML links
        $body = preg_replace('/\[([^\]]+)\]\(([^)]+)\)/', '<a href="$2">$1</a>', $body);
        
        // Convert relative internal links to CMS format
        $body = preg_replace('/href="\/blog\/([^"]+)"/', 'href="?page=blog/$1"', $body);
        $body = preg_replace('/href="\/([^"]+)"/', 'href="?page=$1"', $body);
        
        $body = preg_replace('/\n\n/', '</p><p>', $body);
        $body = '<p>' . $body . '</p>';
        $body = preg_replace('/<p><\/p>/', '', $body);
        $body = preg_replace('/<p>(<h[1-6]>)/', '$1', $body);
        $body = preg_replace('/(<\/h[1-6]>)<\/p>/', '$1', $body);
        
        return [
            'title' => $title ?: 'Untitled',
            'content' => $body
        ];
    }
    
private function autoLinkPageTitles($content) {
        // Get all available pages with their titles
        $pages = $this->getAllPageTitles();
        
        foreach ($pages as $pagePath => $pageTitle) {
            // Create a pattern that matches the exact page title (case-insensitive)
            // Use word boundaries to avoid partial matches
            $pattern = '/\b' . preg_quote($pageTitle, '/') . '\b/i';
            
            // Replace with link, but avoid linking inside existing links, headings, or markdown
            $replacement = function($matches) use ($pageTitle, $pagePath) {
                $text = $matches[0];
                
                // Check if we're inside an existing link or markdown syntax
                if (preg_match('/\[.*?\]\(.*?\)/', $text) || 
                    preg_match('/\[.*?\]:/', $text) ||
                    preg_match('/<a[^>]*>/', $text) ||
                    preg_match('/href=/', $text)) {
                    return $text; // Don't link existing links
                }
                
                return '<a href="?page=' . $pagePath . '" class="auto-link" title="Ga naar ' . htmlspecialchars($pageTitle) . '">' . $text . '</a>';
            };
            
            $content = preg_replace_callback($pattern, $replacement, $content);
        }
        
        return $content;
    }
    
    private function getAllPageTitles() {
        $pages = [];
        $this->scanForPageTitles($this->config['content_dir'], '', $pages);
        return $pages;
    }
    
    private function scanForPageTitles($dir, $prefix, &$pages) {
        if (!is_dir($dir)) return;
        
        $items = scandir($dir);
        sort($items);
        
        foreach ($items as $item) {
            if ($item[0] === '.') continue;
            
            $path = $dir . '/' . $item;
            $relativePath = $prefix ? $prefix . '/' . $item : $item;
            
            if (is_dir($path)) {
                $this->scanForPageTitles($path, $relativePath, $pages);
            } elseif (preg_match('/\.(md|php|html)$/', $item)) {
                $title = $this->extractPageTitle($path);
                if ($title && !empty(trim($title))) {
                    $pagePath = preg_replace('/\.[^.]+$/', '', $relativePath);
                    $pages[$pagePath] = $title;
                }
            }
        }
    }
    
    private function extractPageTitle($filePath) {
        $content = file_get_contents($filePath);
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        
        if ($extension === 'md') {
            // Extract first H1 from Markdown
            if (preg_match('/^#\s+(.+)$/m', $content, $matches)) {
                return trim($matches[1]);
            }
        } elseif ($extension === 'php') {
            // Extract title from PHP file
            if (preg_match('/\$title\s*=\s*["\']([^"\']+)["\']/', $content, $matches)) {
                return trim($matches[1]);
            }
        } elseif ($extension === 'html') {
            // Extract title from HTML file
            if (preg_match('/<title>(.*?)<\/title>/i', $content, $matches)) {
                return trim(strip_tags($matches[1]));
            }
            if (preg_match('/<h1[^>]*>(.*?)<\/h1>/i', $content, $matches)) {
                return trim(strip_tags($matches[1]));
            }
        }
        
        return null;
    }
    
    private function parsePHP($filePath) {
        ob_start();
        $title = 'Untitled';
        include $filePath;
        $content = ob_get_clean();
        
        return [
            'title' => $title,
            'content' => $content
        ];
    }
    
    private function parseHTML($content) {
        $title = 'Untitled';
        
        if (preg_match('/<title>(.*?)<\/title>/i', $content, $matches)) {
            $title = strip_tags($matches[1]);
        } elseif (preg_match('/<h1[^>]*>(.*?)<\/h1>/i', $content, $matches)) {
            $title = strip_tags($matches[1]);
        }
        
        return [
            'title' => $title,
            'content' => $content
        ];
    }
    
    private function isContentDirEmpty() {
        $contentDir = $this->config['content_dir'];
        if (!is_dir($contentDir)) {
            return true;
        }
        
        $files = scandir($contentDir);
        $files = array_diff($files, ['.', '..']);
        
        return empty($files);
    }
    
    private function getGuidePage() {
        $lang = $this->detectLanguage();
        $guideFile = __DIR__ . '/../../guide/' . $lang . '.md';
        
        if (!file_exists($guideFile)) {
            $guideFile = __DIR__ . '/../../guide/en.md'; // Fallback to English
        }
        
        $content = file_get_contents($guideFile);
        $result = $this->parseMarkdown($content);
        
        // Set special title for guide
        $result['title'] = 'Handleiding - CodePress CMS';
        
        return $result;
    }
    
    private function detectLanguage() {
        // Simple language detection based on browser Accept-Language header
        $acceptLanguage = $_SERVER['HTTP_ACCEPT_LANGUAGE'] ?? '';
        
        if (strpos($acceptLanguage, 'nl') !== false) {
            return 'nl';
        }
        
        return 'en'; // Default to English
    }
    
    private function getError404() {
        return [
            'title' => 'Page Not Found',
            'content' => '<h1>404 - Page Not Found</h1><p>The page you are looking for does not exist.</p>'
        ];
    }
    
    public function getMenu() {
        return $this->menu;
    }
    
    public function render() {
        $page = $this->getPage();
        $menu = $this->getMenu();
        $breadcrumb = $this->getBreadcrumb();
        
        // Prepare template data
        $templateData = [
            'site_title' => $this->config['site_title'],
            'page_title' => htmlspecialchars($page['title']),
            'content' => $page['content'],
            'search_query' => isset($_GET['search']) ? htmlspecialchars($_GET['search']) : '',
            'menu' => $this->renderMenu($menu),
            'breadcrumb' => $breadcrumb,
            'default_page' => $this->config['default_page'],
            'homepage' => $this->config['homepage'],
            'author_name' => $this->config['author']['name'] ?? 'CodePress Developer',
            'author_website' => $this->config['author']['website'] ?? '#',
            'author_git' => $this->config['author']['git'] ?? '#',
            'seo_description' => $this->config['seo']['description'] ?? 'CodePress CMS - Lightweight file-based content management system',
            'seo_keywords' => $this->config['seo']['keywords'] ?? 'cms, php, content management, file-based'
        ];
        
        // File info for footer
        if (isset($page['file_info'])) {
            $templateData['file_info'] = 'Created: ' . htmlspecialchars($page['file_info']['created']) . 
                                       ' | Modified: ' . htmlspecialchars($page['file_info']['modified']);
            $templateData['file_info_block'] = '<span class="file-details"> | ' . $templateData['file_info'] . '</span>';
        } else {
            $templateData['file_info'] = '';
            $templateData['file_info_block'] = '';
        }
        
        // File info for footer
        if (isset($page['file_info'])) {
            $templateData['file_info'] = 'Created: ' . htmlspecialchars($page['file_info']['created']) . 
                                       ' | Modified: ' . htmlspecialchars($page['file_info']['modified']);
        } else {
            $templateData['file_info'] = '';
        }
        
        // Check if content exists for guide link
        $hasContent = !$this->isContentDirEmpty();
        $templateData['has_content'] = $hasContent;
        
        // Don't show site title link on guide page
        $templateData['show_site_link'] = !$this->isContentDirEmpty() && !isset($_GET['guide']);
        
        // Load partials manually
        $hasContent = !$this->isContentDirEmpty() && !isset($_GET['guide']);
        
        $headerContent = file_get_contents($this->config['templates_dir'] . '/assets/header.mustache');
        if (!$hasContent) {
            // Remove the link from header when no content
            $headerContent = preg_replace('/<a href="[^"]*" class="site-title-link">\s*<h1[^>]*>(.*?)<\/h1>\s*<\/a>/', '<h1 class="h3 mb-0">$1</h1>', $headerContent);
        }
        
        $footerContent = file_get_contents($this->config['templates_dir'] . '/assets/footer.mustache');
        if (!$hasContent) {
            // Remove guide link from footer when no content
            $footerContent = preg_replace('/<span class="file-details">\s*\|\s*<a href="\?guide"[^>]*>Handleiding<\/a><\/span>/', '', $footerContent);
        }
        
        // Determine content type and load appropriate template
        $contentType = $this->getContentType($page);
        $contentTemplateFile = $this->config['templates_dir'] . '/' . $contentType . '_content.mustache';
        $contentTemplate = file_exists($contentTemplateFile) ? file_get_contents($contentTemplateFile) : '<div class="content">{{{content}}}</div>';
        
        // Determine content type and load appropriate template
        $pagePath = $_GET['page'] ?? $this->config['default_page'];
        $pagePath = preg_replace('/\.[^.]+$/', '', $pagePath);
        $filePath = $this->config['content_dir'] . '/' . $pagePath;
        
        $contentType = 'markdown'; // default
        if (file_exists($filePath . '.md')) {
            $contentType = 'markdown';
        } elseif (file_exists($filePath . '.php')) {
            $contentType = 'php';
        } elseif (file_exists($filePath . '.html')) {
            $contentType = 'html';
        }
        
        $contentTemplateFile = $this->config['templates_dir'] . '/' . $contentType . '_content.mustache';
        $contentTemplate = file_exists($contentTemplateFile) ? file_get_contents($contentTemplateFile) : '<div class="content">{{{content}}}</div>';
        
        $partials = [
            'navigation' => file_get_contents($this->config['templates_dir'] . '/assets/navigation.mustache'),
            'footer' => file_get_contents($this->config['templates_dir'] . '/assets/footer.mustache'),
            'content_template' => $contentTemplate
        ];
        
        // Replace partials in template
        $template = file_get_contents($this->config['templates_dir'] . '/layout.mustache');
        $template = str_replace('{{>navigation}}', $partials['navigation'], $template);
        $template = str_replace('{{>footer}}', $partials['footer'], $template);
        
        // Render template with data
        $renderedTemplate = SimpleTemplate::render($template, $templateData);
        echo $renderedTemplate;
    }
    
    private function getBreadcrumb() {
        if (isset($_GET['search'])) {
            return '<nav aria-label="breadcrumb"><ol class="breadcrumb"><li class="breadcrumb-item"><a href="?page=' . $this->config['default_page'] . '">Home</a></li><li class="breadcrumb-item active">Search</li></ol></nav>';
        }
        
        $page = $_GET['page'] ?? $this->config['default_page'];
        $page = preg_replace('/\.[^.]+$/', '', $page);
        
        if ($page === $this->config['default_page']) {
            return '<nav aria-label="breadcrumb"><ol class="breadcrumb"><li class="breadcrumb-item active">Home</li></ol></nav>';
        }
        
        $parts = explode('/', $page);
        $breadcrumb = '<nav aria-label="breadcrumb"><ol class="breadcrumb"><li class="breadcrumb-item"><a href="?page=' . $this->config['default_page'] . '">Home</a></li>';
        
        $path = '';
        foreach ($parts as $i => $part) {
            $path .= ($path ? '/' : '') . $part;
            $title = ucfirst($part);
            
            if ($i === count($parts) - 1) {
                $breadcrumb .= '<li class="breadcrumb-item active">' . $title . '</li>';
            } else {
                $breadcrumb .= '<li class="breadcrumb-item"><a href="?page=' . $path . '">' . $title . '</a></li>';
            }
        }
        
        $breadcrumb .= '</ol></nav>';
        return $breadcrumb;
    }
    
    private function renderMenu($items, $level = 0) {
        $html = '';
        foreach ($items as $item) {
            if ($item['type'] === 'folder') {
                $hasChildren = !empty($item['children']);
                
                if ($hasChildren) {
                    $folderId = 'folder-' . str_replace('/', '-', $item['path']);
                    $isExpanded = $this->folderContainsActivePage($item['children']);
                    $html .= '<li class="nav-item dropdown">';
                    $html .= '<a class="nav-link dropdown-toggle" href="#" id="' . $folderId . '" role="button" data-bs-toggle="dropdown" aria-expanded="' . ($isExpanded ? 'true' : 'false') . '">';
                    $html .= htmlspecialchars($item['title']);
                    $html .= '</a>';
                    $html .= '<ul class="dropdown-menu" aria-labelledby="' . $folderId . '">';
                    $html .= $this->renderMenu($item['children'], $level + 1);
                    $html .= '</ul>';
                    $html .= '</li>';
                } else {
                    $html .= '<li class="nav-item">';
                    $html .= '<span class="nav-link text-muted">' . htmlspecialchars($item['title']) . '</span>';
                    $html .= '</li>';
                }
            } else {
                // Only show files that are directly in root (not in folders)
                if ($level === 0) {
                    // Don't show the homepage file as a separate tab since it's already the Home button
                    if ($item['path'] === $this->config['homepage']) {
                        continue;
                    }
                    
                    $active = (isset($_GET['page']) && $_GET['page'] === $item['path']) ? 'active' : '';
                    $html .= '<li class="nav-item">';
                    $html .= '<a class="nav-link ' . $active . '" href="' . htmlspecialchars($item['url']) . '">';
                    $html .= htmlspecialchars($item['title']);
                    $html .= '</a>';
                    $html .= '</li>';
                }
            }
        }
        return $html;
    }
    
    private function getContentType($page) {
        // Try to determine content type from page request
        $pagePath = $_GET['page'] ?? $this->config['default_page'];
        $pagePath = preg_replace('/\.[^.]+$/', '', $pagePath);
        
        $filePath = $this->config['content_dir'] . '/' . $pagePath;
        
        // Check for different file extensions
        if (file_exists($filePath . '.md')) {
            return 'markdown';
        } elseif (file_exists($filePath . '.php')) {
            return 'php';
        } elseif (file_exists($filePath . '.html')) {
            return 'html';
        } elseif (file_exists($filePath)) {
            $extension = pathinfo($filePath, PATHINFO_EXTENSION);
            return in_array($extension, ['md', 'php', 'html']) ? $extension : 'markdown';
        }
        
        // Default to markdown
        return 'markdown';
    }
    
    private function folderContainsActivePage($children) {
        foreach ($children as $child) {
            if ($child['type'] === 'folder') {
                if (!empty($child['children']) && $this->folderContainsActivePage($child['children'])) {
                    return true;
                }
            } else {
                if (isset($_GET['page']) && $_GET['page'] === $child['path']) {
                    return true;
                }
            }
        }
        return false;
    }
}