feat: Add campaign comments functionality with API support and database migration

autoload/controls/class.Campaigns.php

@@ -103,7 +103,7 @@ class Campaigns
     echo json_encode( [
       'chart_data' => $chart_data,
       'dates' => $dates,
-      'comments' => []
+      'comments' => \factory\Campaigns::get_campaign_comments( $campaign_id )
     ] );
     exit;
   }
@@ -221,4 +221,38 @@ class Campaigns
     echo json_encode( [ 'success' => true, 'deleted' => $deleted ] );
     exit;
   }
+
+  static public function comment_add()
+  {
+    $campaign_id = (int) \S::get( 'campaign_id' );
+    $comment = trim( \S::get( 'comment' ) );
+    $date = \S::get( 'date' );
+
+    if ( !$campaign_id || !$comment )
+    {
+      echo json_encode( [ 'success' => false, 'message' => 'Brak wymaganych parametrów' ] );
+      exit;
+    }
+
+    $result = \factory\Campaigns::add_campaign_comment( $campaign_id, $comment, $date ?: null );
+
+    echo json_encode( [ 'success' => $result ? true : false ] );
+    exit;
+  }
+
+  static public function comment_delete()
+  {
+    $comment_id = (int) \S::get( 'comment_id' );
+
+    if ( !$comment_id )
+    {
+      echo json_encode( [ 'success' => false, 'message' => 'Nie podano komentarza' ] );
+      exit;
+    }
+
+    $result = \factory\Campaigns::delete_campaign_comment( $comment_id );
+
+    echo json_encode( [ 'success' => $result ? true : false ] );
+    exit;
+  }
 }