添加猜歌名功能，从API中提取歌曲前奏，然后猜歌名

plugins/guess_song/main.py

@@ -150,7 +150,18 @@ class GuessSongPlugin(MessagePluginInterface):
         """处理消息"""
         content = str(message.get("content", "")).strip()
         self.LOG.debug(f"插件执行： {self.name}：{content}")
-        command = content.split(" ")[0]
+        
+        # 简化命令处理，只检查开头是否包含命令前缀
+        command_found = False
+        for cmd in self._commands:
+            if content.startswith(cmd):
+                command_found = True
+                content = content[len(cmd):].strip()
+                break
+                
+        if not command_found:
+            return False, "不匹配的命令"
+            
         sender = message.get("sender")
         roomid = message.get("roomid", "")
         gbm: GroupBotManager = message.get("gbm")
@@ -163,24 +174,17 @@ class GuessSongPlugin(MessagePluginInterface):
         if roomid and gbm.get_group_permission(roomid, Feature.GUESS_MUSIC) == PermissionStatus.DISABLED:
             return False, "没有权限"
 
-        # 提取参数
-        params = content[len(command):].strip()
-
         # 获取当前游戏会话
         current_game = None
         if self.redis_db:
             current_game = self.redis_db.get_game_session(session_id)
 
-        # 如果没有参数，开始新游戏（随机歌手）
-        if not params:
-            return await self._start_new_game(bot, session_id, sender, None)
-
-        # 如果有游戏进行中，且参数不是歌手名，则视为猜歌名答案
-        if current_game and current_game.get("status") == "playing":
-            return await self._check_answer(bot, session_id, sender, params, current_game)
-
-        # 否则，视为指定歌手开始新游戏
-        return await self._start_new_game(bot, session_id, sender, params)
+        # 简化逻辑：如果有内容，且游戏进行中，则视为答案
+        if current_game and current_game.get("status") == "playing" and content:
+            return await self._check_answer(bot, session_id, sender, content, current_game)
+            
+        # 否则开始新游戏（可以指定歌手或随机）
+        return await self._start_new_game(bot, session_id, sender, content if content else None)
 
     async def _start_new_game(self, bot: WechatAPIClient, session_id: str, sender: str, singer_name: Optional[str]) -> \
             Tuple[bool, str]: