Allow filtering chat ids

env.sample.php

@@ -5,3 +5,4 @@
 $bot_api_key  = '1234567890:Telegram_bot_api_key';
 $bot_username = 'telegram_bot_username';
 $hook_url     = 'https://my.server.com/path/to/hook.php';
+$allowed_chat_ids = [123, 456]; // Set to empty array to allow message from any chat

src/Commands/GenericmessageCommand.php

@@ -17,7 +17,16 @@ class GenericmessageCommand extends SystemCommand
 
     public function execute(): ServerResponse
     {
+        global $allowed_chat_ids;
+        
         $message = $this->getMessage();
+        $chat_id = $message->getChat()->getId();
+        if(count($allowed_chat_ids) > 0 && !in_array($chat_id, $allowed_chat_ids)) {
+            return Request::sendMessage([
+                'chat_id' => $chat_id,
+                'text' => "Chat ID $chat_id not allowed",
+            ]);
+        }
 
         $text = $message->getText(true);
         if ($message->getMediaGroupId() || empty($text)) {
@@ -33,7 +42,7 @@ class GenericmessageCommand extends SystemCommand
         $tail = $matches[3] ?? '';
 
         return Request::sendMessage([
-            'chat_id' => $message->getChat()->getId(),
+            'chat_id' => $chat_id,
             'reply_to_message_id' => $message->getMessageId(),
             'text' => "https://fxtwitter.com/$author/status/$tweetId$tail",
             'disable_notification' => true,