124 lines
3.8 KiB
Python
124 lines
3.8 KiB
Python
from abc import ABC, abstractmethod
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from typing import List, Dict, Any
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from src.common.database import db
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class MessageStorage(ABC):
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"""消息存储接口"""
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@abstractmethod
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async def get_messages_after(self, chat_id: str, message: Dict[str, Any]) -> List[Dict[str, Any]]:
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"""获取指定消息ID之后的所有消息
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Args:
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chat_id: 聊天ID
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message: 消息
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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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pass
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@abstractmethod
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async def get_messages_before(self, chat_id: str, time_point: float, limit: int = 5) -> 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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chat_id: 聊天ID
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time_point: 时间戳
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limit: 最大消息数量
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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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pass
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@abstractmethod
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async def has_new_messages(self, chat_id: str, after_time: float) -> bool:
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"""检查是否有新消息
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Args:
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chat_id: 聊天ID
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after_time: 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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pass
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class MongoDBMessageStorage(MessageStorage):
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"""MongoDB消息存储实现"""
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def __init__(self):
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self.db = db
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async def get_messages_after(self, chat_id: str, message_time: float) -> List[Dict[str, Any]]:
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query = {"chat_id": chat_id}
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# print(f"storage_check_message: {message_time}")
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query["time"] = {"$gt": message_time}
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return list(self.db.messages.find(query).sort("time", 1))
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async def get_messages_before(self, chat_id: str, time_point: float, limit: int = 5) -> List[Dict[str, Any]]:
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query = {"chat_id": chat_id, "time": {"$lt": time_point}}
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messages = list(self.db.messages.find(query).sort("time", -1).limit(limit))
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# 将消息按时间正序排列
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messages.reverse()
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return messages
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async def has_new_messages(self, chat_id: str, after_time: float) -> bool:
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query = {"chat_id": chat_id, "time": {"$gt": after_time}}
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return self.db.messages.find_one(query) is not None
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# # 创建一个内存消息存储实现，用于测试
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# class InMemoryMessageStorage(MessageStorage):
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# """内存消息存储实现，主要用于测试"""
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# def __init__(self):
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# self.messages: Dict[str, List[Dict[str, Any]]] = {}
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# async def get_messages_after(self, chat_id: str, message_id: Optional[str] = None) -> List[Dict[str, Any]]:
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# if chat_id not in self.messages:
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# return []
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# messages = self.messages[chat_id]
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# if not message_id:
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# return messages
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# # 找到message_id的索引
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# try:
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# index = next(i for i, m in enumerate(messages) if m["message_id"] == message_id)
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# return messages[index + 1:]
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# except StopIteration:
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# return []
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# async def get_messages_before(self, chat_id: str, time_point: float, limit: int = 5) -> List[Dict[str, Any]]:
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# if chat_id not in self.messages:
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# return []
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# messages = [
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# m for m in self.messages[chat_id]
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# if m["time"] < time_point
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# ]
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# return messages[-limit:]
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# async def has_new_messages(self, chat_id: str, after_time: float) -> bool:
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# if chat_id not in self.messages:
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# return False
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# return any(m["time"] > after_time for m in self.messages[chat_id])
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# # 测试辅助方法
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# def add_message(self, chat_id: str, message: Dict[str, Any]):
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# """添加测试消息"""
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# if chat_id not in self.messages:
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# self.messages[chat_id] = []
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# self.messages[chat_id].append(message)
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# self.messages[chat_id].sort(key=lambda m: m["time"])
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