同步设备期望音量并补发音量指令

talkingq-url/services/device_volume_manager.py

@@ -39,6 +39,27 @@ class DeviceVolumeManager(DatabaseServiceBase):
             return self.default_volume  # 出错时返回默认值
         finally:
             await db_session.close()
+
+    async def get_configured_volume(self, device_id: str) -> Optional[int]:
+        """获取已持久化的期望音量；未配置时返回 None。"""
+        await self._init_database()
+
+        db_session = await self.get_session()
+        try:
+            query = select(DeviceConfig.volume).where(DeviceConfig.device_id == device_id)
+            result = await db_session.execute(query)
+            volume = result.scalar_one_or_none()
+            if volume is None:
+                return None
+
+            normalized_volume = int(volume)
+            self.device_volumes[device_id] = normalized_volume
+            return normalized_volume
+        except Exception as e:
+            session_logger.error(device_id, "volume", f"获取期望音量失败: {str(e)}")
+            raise
+        finally:
+            await db_session.close()
     
     async def set_volume(self, device_id: str, volume: int) -> bool:
         """设置设备音量并保存到数据库"""
@@ -59,7 +80,7 @@ class DeviceVolumeManager(DatabaseServiceBase):
                 update_stmt = (
                     update(DeviceConfig)
                     .where(DeviceConfig.device_id == device_id)
-                    .values(volume=volume)
+                    .values(volume=volume, last_update_time=time.time())
                 )
                 await db_session.execute(update_stmt)
             else: