Add table of contents generation and header ID processing to Articles class

- Implemented `generateTableOfContents` method to create a structured table of contents from article content.
- Added `processHeaders` method to ensure headers have unique IDs for linking.
- Updated `generateHeadersIds` to apply ID generation to headers in article content.
- Modified `article_full` method to include table of contents in rendered articles.
- Enhanced `submenu_details` and `subpages` methods in Menu class to support language ID.
- Updated caching mechanisms to include language ID for subpages and menu details.
- Refactored various methods in Articles view class for improved readability and consistency.
- Added new sftp configuration file for deployment settings.

autoload/front/factory/class.Articles.php

@@ -2,7 +2,87 @@
 namespace front\factory;
 class Articles
 {
-  public static function pixieset_save_favorite_images( $hash ) {
+  static public function generateTableOfContents($content) {
+    $result = '';
+    $currentLevel = [];
+
+    preg_match_all('/<(h[1-6])([^>]*)>(.*?)<\/\1>/', $content, $matches, PREG_SET_ORDER);
+
+    $firstLevel = true;
+
+    foreach ($matches as $match) {
+        $level = intval(substr($match[1], 1));
+
+        while ($level < count($currentLevel)) {
+            $result .= '</li></ol>';
+            array_pop($currentLevel);
+        }
+
+        if ($level > count($currentLevel)) {
+            while ($level > count($currentLevel)) {
+                if (count($currentLevel) > 0 || $firstLevel) {
+                    $result .= '<ol>';
+                    $firstLevel = false;
+                }
+                array_push($currentLevel, 0);
+            }
+            $result .= '<li>';
+        } else {
+            $result .= '</li><li>';
+        }
+
+        $currentLevel[count($currentLevel) - 1]++;
+
+        preg_match('/\sid="([^"]*)"/', $match[2], $idMatches);
+        $id = isset($idMatches[1]) ? $idMatches[1] : '';
+
+        $result .= sprintf(
+            '<a href="#%s">%s</a>',
+            urlencode(strtolower($id)),
+            $match[3]
+        );
+    }
+
+    while (!empty($currentLevel)) {
+        $result .= '</li></ol>';
+        array_pop($currentLevel);
+    }
+
+    if (substr($result, 0, 8) === '<ol><ol>') {
+        return substr($result, 4, -5);
+    } else {
+        return $result;
+    }
+  }
+
+  // funkcja wywoływana dla każdego dopasowania do wyrażenia regularnego
+  static public function processHeaders( $matches )
+  {
+    $level = $matches[1];
+    $attrs = $matches[2];
+    $content = $matches[3];
+    $id_attr = 'id=';
+    $id_attr_pos = strpos($attrs, $id_attr);
+    if ($id_attr_pos === false) { // jeśli nie ma atrybutu id
+      $id = \S::seo( $content );
+      $attrs .= sprintf(' id="%s"', $id);
+    }
+
+    $html = sprintf( '<h%d%s>%s</h%d>', $level, $attrs, $content, $level );
+    return $html;
+  }
+
+  static public function generateHeadersIds( $text )
+  {
+    $pattern = '/<h([1-6])(.*?)>(.*?)<\/h\1>/si';
+
+    $text = preg_replace_callback( $pattern, array(__CLASS__, 'processHeaders'), $text );
+
+    return $text;
+  }
+
+  public static function pixieset_save_favorite_images( $hash )
+  {
     global $mdb, $settings;
 
     \S::delete_dir( 'temp/' );
@@ -149,6 +229,12 @@ class Articles
 
   public static function get_image( $article, $skip_entry = false )
   {
+    if ( $article['language']['main_image'] )
+    {
+      if ( file_exists( substr( $article['language']['main_image'], 1, strlen( $article['language']['main_image'] ) ) ) )
+        return $article['language']['main_image'];
+    }
+
     if ( !$skip_entry )
     {
       $dom = new \DOMDocument();

autoload/front/factory/class.Menu.php

@@ -3,51 +3,51 @@ namespace front\factory;
 
 class Menu
 {
-  public static function submenu_details( $page_id )
+  public static function submenu_details( $page_id, $lang_id )
   {
-    return self::subpages( $page_id );
+    return self::subpages( $page_id, $lang_id );
   }
-  
-  public static function subpages( $page_id )
+
+  static public function subpages( $page_id, $lang_id )
   {
     global $mdb;
-    
-    if ( !$pages = \Cache::fetch( "subpages:$page_id" ) )
+
+    if ( !$pages = \Cache::fetch( "subpages:$page_id:$lang_id" ) )
     {
       $results = $mdb -> select( 'pp_pages', [ 'id' ], [ 'AND' => [ 'status' => 1, 'parent_id' => $page_id ], 'ORDER' => [ 'o' => 'ASC' ] ] );
       if ( is_array( $results ) ) foreach ( $results as $row )
       {
         $page = \front\factory\Pages::page_details( $row['id'] );
-        $page['pages'] = self::subpages( $row['id'] );
+        $page['pages'] = self::subpages( $row['id'], $lang_id );
 
         $pages[] = $page;
       }
-      
+
       \Cache::store( "subpages:$page_id", $pages );
     }
     return $pages;
   }
-  
+
   public static function menu_details( $menu_id )
   {
     global $mdb, $lang_id;
-    
+
     if ( !$menu = \Cache::fetch( "menu_details:$menu_id:$lang_id" ) )
     {
       $menu = $mdb -> get( 'pp_menus', '*', [ 'id' => (int)$menu_id ] );
       $menu['pages'] = self::menu_pages( $menu_id );
-      
+
       \Cache::store( "menu_details:$menu_id:$lang_id", $menu );
-    }    
+    }
     return $menu;
   }
-  
+
   public static function menu_pages( $menu_id, $parent_id = null )
   {
     global $mdb, $lang_id;
-    
+
     if ( !$pages = \Cache::fetch( "menu_pages:$menu_id:$parent_id:$lang_id" ) )
-    {    
+    {
       $results = $mdb -> select( 'pp_pages', [ 'id' ], [ 'AND' => [ 'status' => 1, 'menu_id' => (int)$menu_id, 'parent_id' => $parent_id ], 'ORDER' => [ 'o' => 'ASC' ] ] );
       if ( is_array( $results ) ) foreach ( $results as $row )
       {
@@ -56,7 +56,7 @@ class Menu
 
         $pages[] = $page;
       }
-      
+
       \Cache::store( "menu_pages:$menu_id:$parent_id:$lang_id", $pages );
     }
     return $pages;