424 lines
15 KiB
Python
424 lines
15 KiB
Python
import time
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import asyncio
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from typing import Optional, Dict, Any, List, Tuple
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from src.common.logger import get_module_logger
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from ..message.message_base import UserInfo
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from ..config.config import global_config
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from .chat_states import NotificationManager, create_new_message_notification, create_cold_chat_notification
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from .message_storage import MessageStorage, MongoDBMessageStorage
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logger = get_module_logger("chat_observer")
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class ChatObserver:
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"""聊天状态观察器"""
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# 类级别的实例管理
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_instances: Dict[str, "ChatObserver"] = {}
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@classmethod
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def get_instance(cls, stream_id: str, message_storage: Optional[MessageStorage] = None) -> "ChatObserver":
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"""获取或创建观察器实例
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Args:
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stream_id: 聊天流ID
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message_storage: 消息存储实现，如果为None则使用MongoDB实现
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Returns:
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ChatObserver: 观察器实例
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"""
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if stream_id not in cls._instances:
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cls._instances[stream_id] = cls(stream_id, message_storage)
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return cls._instances[stream_id]
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def __init__(self, stream_id: str, message_storage: Optional[MessageStorage] = None):
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"""初始化观察器
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Args:
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stream_id: 聊天流ID
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message_storage: 消息存储实现，如果为None则使用MongoDB实现
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"""
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if stream_id in self._instances:
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raise RuntimeError(f"ChatObserver for {stream_id} already exists. Use get_instance() instead.")
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self.stream_id = stream_id
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self.message_storage = message_storage or MongoDBMessageStorage()
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self.last_user_speak_time: Optional[float] = None # 对方上次发言时间
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self.last_bot_speak_time: Optional[float] = None # 机器人上次发言时间
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self.last_check_time: float = time.time() # 上次查看聊天记录时间
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self.last_message_read: Optional[str] = None # 最后读取的消息ID
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self.last_message_time: Optional[float] = None # 最后一条消息的时间戳
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self.waiting_start_time: float = time.time() # 等待开始时间，初始化为当前时间
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# 消息历史记录
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self.message_history: List[Dict[str, Any]] = [] # 所有消息历史
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self.last_message_id: Optional[str] = None # 最后一条消息的ID
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self.message_count: int = 0 # 消息计数
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# 运行状态
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self._running: bool = False
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self._task: Optional[asyncio.Task] = None
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self._update_event = asyncio.Event() # 触发更新的事件
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self._update_complete = asyncio.Event() # 更新完成的事件
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# 通知管理器
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self.notification_manager = NotificationManager()
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# 冷场检查配置
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self.cold_chat_threshold: float = 60.0 # 60秒无消息判定为冷场
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self.last_cold_chat_check: float = time.time()
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self.is_cold_chat_state: bool = False
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self.update_event = asyncio.Event()
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self.update_interval = 5 # 更新间隔（秒）
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self.message_cache = []
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self.update_running = False
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async def check(self) -> bool:
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"""检查距离上一次观察之后是否有了新消息
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Returns:
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bool: 是否有新消息
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"""
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logger.debug(f"检查距离上一次观察之后是否有了新消息: {self.last_check_time}")
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new_message_exists = await self.message_storage.has_new_messages(self.stream_id, self.last_check_time)
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if new_message_exists:
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logger.debug("发现新消息")
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self.last_check_time = time.time()
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return new_message_exists
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async def _add_message_to_history(self, message: Dict[str, Any]):
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"""添加消息到历史记录并发送通知
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Args:
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message: 消息数据
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"""
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self.message_history.append(message)
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self.last_message_id = message["message_id"]
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self.last_message_time = message["time"] # 更新最后消息时间
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self.message_count += 1
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# 更新说话时间
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user_info = UserInfo.from_dict(message.get("user_info", {}))
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if user_info.user_id == global_config.BOT_QQ:
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self.last_bot_speak_time = message["time"]
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else:
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self.last_user_speak_time = message["time"]
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# 发送新消息通知
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notification = create_new_message_notification(sender="chat_observer", target="pfc", message=message)
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await self.notification_manager.send_notification(notification)
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# 检查并更新冷场状态
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await self._check_cold_chat()
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async def _check_cold_chat(self):
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"""检查是否处于冷场状态并发送通知"""
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current_time = time.time()
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# 每10秒检查一次冷场状态
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if current_time - self.last_cold_chat_check < 10:
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return
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self.last_cold_chat_check = current_time
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# 判断是否冷场
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is_cold = False
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if self.last_message_time is None:
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is_cold = True
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else:
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is_cold = (current_time - self.last_message_time) > self.cold_chat_threshold
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# 如果冷场状态发生变化，发送通知
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if is_cold != self.is_cold_chat_state:
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self.is_cold_chat_state = is_cold
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notification = create_cold_chat_notification(sender="chat_observer", target="pfc", is_cold=is_cold)
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await self.notification_manager.send_notification(notification)
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async def get_new_message(self) -> Tuple[List[Dict[str, Any]], List[Dict[str, Any]]]:
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"""获取上一次观察的时间点后的新消息，插入到历史记录中，并返回新消息和历史记录两个对象"""
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messages = await self.message_storage.get_messages_after(self.stream_id, self.last_message_read)
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for message in messages:
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await self._add_message_to_history(message)
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return messages, self.message_history
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def new_message_after(self, time_point: float) -> bool:
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"""判断是否在指定时间点后有新消息
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Args:
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time_point: 时间戳
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Returns:
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bool: 是否有新消息
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"""
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if time_point is None:
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logger.warning("time_point 为 None，返回 False")
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return False
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if self.last_message_time is None:
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logger.debug("没有最后消息时间，返回 False")
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return False
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has_new = self.last_message_time > time_point
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logger.debug(f"判断是否在指定时间点后有新消息: {self.last_message_time} > {time_point} = {has_new}")
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return has_new
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def get_message_history(
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self,
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start_time: Optional[float] = None,
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end_time: Optional[float] = None,
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limit: Optional[int] = None,
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user_id: Optional[str] = None,
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) -> List[Dict[str, Any]]:
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"""获取消息历史
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Args:
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start_time: 开始时间戳
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end_time: 结束时间戳
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limit: 限制返回消息数量
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user_id: 指定用户ID
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Returns:
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List[Dict[str, Any]]: 消息列表
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"""
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filtered_messages = self.message_history
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if start_time is not None:
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filtered_messages = [m for m in filtered_messages if m["time"] >= start_time]
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if end_time is not None:
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filtered_messages = [m for m in filtered_messages if m["time"] <= end_time]
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if user_id is not None:
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filtered_messages = [
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m for m in filtered_messages if UserInfo.from_dict(m.get("user_info", {})).user_id == user_id
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]
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if limit is not None:
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filtered_messages = filtered_messages[-limit:]
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return filtered_messages
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async def _fetch_new_messages(self) -> List[Dict[str, Any]]:
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"""获取新消息
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Returns:
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List[Dict[str, Any]]: 新消息列表
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"""
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new_messages = await self.message_storage.get_messages_after(self.stream_id, self.last_message_read)
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if new_messages:
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self.last_message_read = new_messages[-1]["message_id"]
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return new_messages
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async def _fetch_new_messages_before(self, time_point: float) -> List[Dict[str, Any]]:
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"""获取指定时间点之前的消息
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Args:
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time_point: 时间戳
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Returns:
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List[Dict[str, Any]]: 最多5条消息
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"""
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new_messages = await self.message_storage.get_messages_before(self.stream_id, time_point)
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if new_messages:
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self.last_message_read = new_messages[-1]["message_id"]
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return new_messages
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"""主要观察循环"""
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async def _update_loop(self):
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"""更新循环"""
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try:
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start_time = time.time()
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messages = await self._fetch_new_messages_before(start_time)
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for message in messages:
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await self._add_message_to_history(message)
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except Exception as e:
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logger.error(f"缓冲消息出错: {e}")
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while self._running:
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try:
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# 等待事件或超时（1秒）
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try:
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await asyncio.wait_for(self._update_event.wait(), timeout=1)
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except asyncio.TimeoutError:
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pass # 超时后也执行一次检查
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self._update_event.clear() # 重置触发事件
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self._update_complete.clear() # 重置完成事件
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# 获取新消息
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new_messages = await self._fetch_new_messages()
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if new_messages:
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# 处理新消息
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for message in new_messages:
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await self._add_message_to_history(message)
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# 设置完成事件
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self._update_complete.set()
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except Exception as e:
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logger.error(f"更新循环出错: {e}")
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self._update_complete.set() # 即使出错也要设置完成事件
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def trigger_update(self):
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"""触发一次立即更新"""
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self._update_event.set()
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async def wait_for_update(self, timeout: float = 5.0) -> bool:
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"""等待更新完成
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Args:
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timeout: 超时时间（秒）
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Returns:
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bool: 是否成功完成更新（False表示超时）
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"""
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try:
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await asyncio.wait_for(self._update_complete.wait(), timeout=timeout)
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return True
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except asyncio.TimeoutError:
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logger.warning(f"等待更新完成超时（{timeout}秒）")
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return False
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def start(self):
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"""启动观察器"""
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if self._running:
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return
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self._running = True
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self._task = asyncio.create_task(self._update_loop())
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logger.info(f"ChatObserver for {self.stream_id} started")
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def stop(self):
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"""停止观察器"""
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self._running = False
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self._update_event.set() # 设置事件以解除等待
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self._update_complete.set() # 设置完成事件以解除等待
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if self._task:
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self._task.cancel()
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logger.info(f"ChatObserver for {self.stream_id} stopped")
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async def process_chat_history(self, messages: list):
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"""处理聊天历史
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Args:
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messages: 消息列表
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"""
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self.update_check_time()
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for msg in messages:
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try:
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user_info = UserInfo.from_dict(msg.get("user_info", {}))
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if user_info.user_id == global_config.BOT_QQ:
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self.update_bot_speak_time(msg["time"])
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else:
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self.update_user_speak_time(msg["time"])
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except Exception as e:
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logger.warning(f"处理消息时间时出错: {e}")
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continue
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def update_check_time(self):
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"""更新查看时间"""
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self.last_check_time = time.time()
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def update_bot_speak_time(self, speak_time: Optional[float] = None):
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"""更新机器人说话时间"""
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self.last_bot_speak_time = speak_time or time.time()
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def update_user_speak_time(self, speak_time: Optional[float] = None):
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"""更新用户说话时间"""
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self.last_user_speak_time = speak_time or time.time()
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def get_time_info(self) -> str:
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"""获取时间信息文本"""
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current_time = time.time()
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time_info = ""
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if self.last_bot_speak_time:
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bot_speak_ago = current_time - self.last_bot_speak_time
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time_info += f"\n距离你上次发言已经过去了{int(bot_speak_ago)}秒"
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if self.last_user_speak_time:
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user_speak_ago = current_time - self.last_user_speak_time
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time_info += f"\n距离对方上次发言已经过去了{int(user_speak_ago)}秒"
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return time_info
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def start_periodic_update(self):
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"""启动观察器的定期更新"""
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if not self.update_running:
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self.update_running = True
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asyncio.create_task(self._periodic_update())
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async def _periodic_update(self):
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"""定期更新消息历史"""
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try:
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while self.update_running:
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await self._update_message_history()
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await asyncio.sleep(self.update_interval)
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except Exception as e:
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logger.error(f"定期更新消息历史时出错: {str(e)}")
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async def _update_message_history(self) -> bool:
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"""更新消息历史
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Returns:
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bool: 是否有新消息
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"""
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try:
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messages = await self.message_storage.get_messages_for_stream(self.stream_id, limit=50)
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if not messages:
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return False
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# 检查是否有新消息
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has_new_messages = False
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if messages and (
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not self.message_cache or messages[0]["message_id"] != self.message_cache[0]["message_id"]
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):
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has_new_messages = True
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self.message_cache = messages
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if has_new_messages:
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self.update_event.set()
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self.update_event.clear()
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return True
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return False
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except Exception as e:
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logger.error(f"更新消息历史时出错: {str(e)}")
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return False
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def get_cached_messages(self, limit: int = 50) -> List[Dict[str, Any]]:
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"""获取缓存的消息历史
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Args:
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limit: 获取的最大消息数量，默认50
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Returns:
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List[Dict[str, Any]]: 缓存的消息历史列表
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"""
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return self.message_cache[:limit]
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def get_last_message(self) -> Optional[Dict[str, Any]]:
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"""获取最后一条消息
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Returns:
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Optional[Dict[str, Any]]: 最后一条消息，如果没有则返回None
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"""
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if not self.message_cache:
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return None
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return self.message_cache[0]
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