class NA_Core {
    public static function init() {
        // تسجيل Custom Post Type
        add_action('init', array(__CLASS__, 'register_news_cpt'));
        
        // تسجيل التصنيفات
        add_action('init', array(__CLASS__, 'register_taxonomies'));
        
        // تحميل الوحدات
        self::load_modules();
    }
    
    public static function register_news_cpt() {
        $args = array(
            'public' => true,
            'label'  => 'الأخبار',
            'supports' => array('title', 'thumbnail'),
            'has_archive' => true,
            'rewrite' => array('slug' => 'news'),
            'show_in_menu' => false
        );
        register_post_type('news', $args);
    }
    
    public static function register_taxonomies() {
        register_taxonomy('news_source', 'news', array(
            'label' => 'مصادر الأخبار',
            'hierarchical' => true,
            'show_admin_column' => true
        ));
    }
    
    private static function load_modules() {
        new NA_Admin();
        new NA_Cron();
        new NA_Analytics();
    }
}class NA_Admin {
    public function __construct() {
        add_action('admin_menu', array($this, 'add_admin_menu'));
        add_action('admin_enqueue_scripts', array($this, 'enqueue_scripts'));
    }
    
    public function add_admin_menu() {
        add_menu_page(
            'إدارة الأخبار',
            'الأخبار',
            'manage_options',
            'news-manager',
            array($this, 'sources_list_page'),
            'dashicons-admin-site',
            30
        );
        
        add_submenu_page(
            'news-manager',
            'إضافة مصدر جديد',
            'إضافة مصدر',
            'manage_options',
            'add-news-source',
            array($this, 'add_source_page')
        );
    }
    
    public function sources_list_page() {
        include NA_PLUGIN_PATH . 'admin/partials/sources-list.php';
    }
    
    public function add_source_page() {
        include NA_PLUGIN_PATH . 'admin/partials/add-source.php';
    }
}class NA_Cron {
    private $schedules;
    
    public function __construct() {
        $this->schedules = array(
            'hourly' => 3600,
            'six_hours' => 21600,
            'twelve_hours' => 43200,
            'daily' => 86400
        );
        
        add_filter('cron_schedules', array($this, 'add_custom_schedules'));
        add_action('na_fetch_news_event', array($this, 'fetch_news_for_source'));
    }
    
    public function add_custom_schedules($schedules) {
        foreach ($this->schedules as $key => $interval) {
            $schedules[$key] = array(
                'interval' => $interval,
                'display' => $this->get_schedule_display_name($key)
            );
        }
        return $schedules;
    }
    
    public function fetch_news_for_source($source_id) {
        $source = $this->get_source($source_id);
        if ($source->type == 'rss') {
            NA_RSS_Parser::fetch($source);
        } else {
            NA_Scraper::fetch($source);
        }
    }
}class NA_Analytics {
    public function __construct() {
        add_action('wp_ajax_na_track_impression', array($this, 'track_impression'));
        add_action('wp_ajax_nopriv_na_track_impression', array($this, 'track_impression'));
        add_action('wp_ajax_na_track_view_time', array($this, 'track_view_time'));
        add_action('wp_ajax_nopriv_na_track_view_time', array($this, 'track_view_time'));
    }
    
    public function track_impression() {
        $news_id = intval($_POST['news_id']);
        $this->increment_impressions($news_id);
        wp_die();
    }
    
    public function track_view_time() {
        $news_id = intval($_POST['news_id']);
        $view_time = intval($_POST['view_time']);
        $this->update_view_time($news_id, $view_time);
        wp_die();
    }
}class NA_RSS_Parser {
    public static function fetch($source) {
        $rss_url = $source->rss_url;
        
        // جلب محتوى RSS
        $response = wp_remote_get($rss_url, array(
            'timeout' => 30,
            'user-agent' => 'Mozilla/5.0 News Aggregator Plugin'
        ));
        
        if (is_wp_error($response)) {
            self::log_error($source->id, 'فشل في جلب RSS: ' . $response->get_error_message());
            return false;
        }
        
        $rss_content = wp_remote_retrieve_body($response);
        $xml = simplexml_load_string($rss_content);
        
        if (!$xml) {
            self::log_error($source->id, 'فشل في تحليل XML');
            return false;
        }
        
        // معالجة العناصر
        $items = $xml->channel->item;
        $news_count = 0;
        
        foreach ($items as $item) {
            if (self::save_news_item($item, $source)) {
                $news_count++;
            }
        }
        
        self::update_source_last_fetch($source->id, $news_count);
        return $news_count;
    }
    
    private static function save_news_item($item, $source) {
        $title = (string) $item->title;
        $link = (string) $item->link;
        
        // التحقق من عدم التكرار
        if (self::news_exists($link)) {
            return false;
        }
        
        // إضافة الخبر
        $news_id = wp_insert_post(array(
            'post_title' => $title,
            'post_type' => 'news',
            'post_status' => 'publish',
            'meta_input' => array(
                '_news_source_url' => $link,
                '_news_source_id' => $source->id,
                '_fetch_time' => current_time('mysql')
            )
        ));
        
        if (!is_wp_error($news_id)) {
            wp_set_post_terms($news_id, array($source->category_id), 'news_source');
            return true;
        }
        
        return false;
    }
    
    private static function news_exists($link) {
        global $wpdb;
        $query = "SELECT post_id FROM {$wpdb->postmeta} 
                 WHERE meta_key = '_news_source_url' AND meta_value = %s";
        return $wpdb->get_var($wpdb->prepare($query, $link));
    }
}class NA_Scraper {
    public static function fetch($source) {
        $url = $source->url;
        
        $response = wp_remote_get($url, array(
            'timeout' => 30,
            'headers' => array(
                'User-Agent' => 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36'
            )
        ));
        
        if (is_wp_error($response)) {
            self::log_error($source->id, 'فشل في جلب الصفحة: ' . $response->get_error_message());
            return false;
        }
        
        $html = wp_remote_retrieve_body($response);
        $dom = new DOMDocument();
        @$dom->loadHTML($html);
        
        $xpath = new DOMXPath($dom);
        
        // محاولة العثور على عناوين الأخبار (قابلة للتخصيص)
        $headlines = self::extract_headlines($xpath);
        
        $news_count = 0;
        foreach ($headlines as $headline) {
            if (self::save_scraped_news($headline, $source)) {
                $news_count++;
            }
        }
        
        self::update_source_last_fetch($source->id, $news_count);
        return $news_count;
    }
    
    private static function extract_headlines($xpath) {
        $headlines = array();
        
        // أنماط شائعة لعناوين الأخبار
        $patterns = array(
            '//h1/a',
            '//h2/a',
            '//h3/a',
            '//article//a',
            '//.news-item//a',
            '//.headline//a'
        );
        
        foreach ($patterns as $pattern) {
            $elements = $xpath->query($pattern);
            foreach ($elements as $element) {
                $title = trim($element->nodeValue);
                $link = $element->getAttribute('href');
                
                if (!empty($title) && !empty($link) && strlen($title) > 10) {
                    // جعل الرابط مطلقاً إذا كان نسبياً
                    if (strpos($link, 'http') !== 0) {
                        $link = self::make_absolute_url($link, $source->url);
                    }
                    
                    $headlines[] = array(
                        'title' => $title,
                        'link' => $link
                    );
                }
            }
        }
        
        return $headlines;
    }
    
    private static function make_absolute_url($relative, $base) {
        // تحويل الروابط النسبية إلى مطلقة
        return rtrim($base, '/') . '/' . ltrim($relative, '/');
    }
}<br />
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