添加新命令并优化关键词过滤机制

- 在bot_commands.py中添加新的'/deletecontaining'命令，允许用户删除所有包含指定词语的关键词。
- 更新guard.py以处理新命令，并微调消息过滤逻辑，限制重复链接的分享。
- 在link_filter.py中实现关键词的子字符串删除功能，并优化匹配和删除逻辑。

src/bot_commands.py

@@ -7,6 +7,7 @@ async def register_commands(client, admin_id):
         BotCommand('add', '添加新的关键词'),
         BotCommand('delete', '删除现有的关键词'),
         BotCommand('list', '列出所有当前的关键词'),
+        BotCommand('deletecontaining', '删除所有包含指定词语的关键词'),
         BotCommand('addwhite', '添加域名到白名单'),
         BotCommand('delwhite', '从白名单移除域名'),
         BotCommand('listwhite', '列出白名单域名'),

src/guard.py

@@ -67,7 +67,7 @@ async def process_message(event, client):
             logger.info(f"Message should be filtered: {event.message.text}")
             if event.sender_id != ADMIN_ID:
                 await event.delete()
-                notification = await event.respond("已撤回该消息。注:已置顶项目分享链接, 二次分享链接, 都会被撤回.")
+                notification = await event.respond("已撤回该消息。注:一个链接不能发两次.")
                 asyncio.create_task(delete_message_after_delay(client, event.chat_id, notification, 3 * 60))
             return
         if new_links:
@@ -87,12 +87,12 @@ async def command_handler(event, link_filter):
         command, *args = event.message.text.split()
         command = command.lower()
 
-        if command in ['/add', '/delete', '/list']:
+        if command in ['/add', '/delete', '/list', '/deletecontaining']:
             await link_filter.handle_keyword_command(event, command, args)
         elif command in ['/addwhite', '/delwhite', '/listwhite']:
             await link_filter.handle_whitelist_command(event, command, args)
         
-        if event.raw_text.startswith(('/add', '/delete', '/list', '/addwhite', '/delwhite', '/listwhite')):
+        if event.raw_text.startswith(('/add', '/delete', '/deletecontaining','/list', '/addwhite', '/delwhite', '/listwhite')):
             link_filter.load_data_from_file()
 async def start_bot():
     async with TelegramClient('bot', api_id=6, api_hash='eb06d4abfb49dc3eeb1aeb98ae0f581e') as client:

src/link_filter.py

@@ -96,6 +96,25 @@ class LinkFilter:
             return True
         return False
     
+    def remove_keywords_containing(self, substring):
+        # 记录原始关键词列表的长度
+        original_count = len(self.keywords)
+        
+        # 创建一个列表，包含所有需要移除的关键词
+        removed_keywords = [kw for kw in self.keywords if substring.lower() in kw.lower()]
+        
+        # 修改关键词列表，仅保留不包含指定子字符串的关键词
+        self.keywords = [kw for kw in self.keywords if substring.lower() not in kw.lower()]
+        
+        # 如果有关键词被移除，则保存关键词列表并重新加载数据
+        if removed_keywords:
+            self.save_keywords()
+            self.load_data_from_file()
+        
+        # 返回被移除的关键词列表
+        return removed_keywords
+
+
 
     def should_filter(self, text):
         logger.debug(f"Checking text: {text}")
@@ -145,6 +164,13 @@ class LinkFilter:
                     await event.reply(f"未找到精确匹配的关键词 '{keyword}'。\n\n以下是相似的关键词：\n" + "\n".join(similar_keywords))
                 else:
                     await event.reply(f"关键词 '{keyword}' 不存在。")
+        elif command == '/deletecontaining' and args:
+            substring = ' '.join(args)
+            removed_keywords = self.remove_keywords_containing(substring)
+            if removed_keywords:
+                await event.reply(f"已删除包含 '{substring}' 的以下关键词：\n" + "\n".join(removed_keywords))
+            else:
+                await event.reply(f"没有找到包含 '{substring}' 的关键词。")
         else:
             await event.reply("无效的命令或参数。")