ai-chat-system/services/matrix_service.py

"""
Matrix Bot 服务 - 使用 nio 库处理消息收发（支持加密）
"""
import asyncio
import logging
import os
from typing import Optional, Callable
from nio import AsyncClient, RoomMessageText, MegolmEvent

from models import SessionLocal, User, Conversation, Message, SystemConfig
from services.conversation_service import ConversationService
from services import ai_service

logger = logging.getLogger(__name__)

MAIN_USER_ID = "main_user"
STORE_PATH = "/home/xian/.openclaw/workspace-coder/works/ai-chat/matrix_store"


class MatrixBot:
    def __init__(self):
        self.client: Optional[AsyncClient] = None
        self.homeserver: str = ""
        self.user_id: str = ""
        self.password: str = ""
        self.is_running: bool = False
        self.on_message_callback: Optional[Callable] = None
        self.last_room_id: str = ""
    
    async def init_from_config(self):
        """从数据库配置初始化"""
        db = SessionLocal()
        try:
            configs = {c.key: c.value for c in db.query(SystemConfig).all()}
            self.homeserver = configs.get('matrix_homeserver', 'http://matrix.tphai.com')
            self.user_id = configs.get('matrix_username', '@tester:matrix.tphai.com')
            self.password = configs.get('matrix_password', 'tester12345@!')
            
            logger.info(f"Matrix配置: homeserver={self.homeserver}, user={self.user_id}")
            
            if self.user_id and self.password:
                # 创建存储目录
                os.makedirs(STORE_PATH, exist_ok=True)
                
                # 使用加密存储
                self.client = AsyncClient(
                    self.homeserver, 
                    self.user_id,
                    store_path=STORE_PATH
                )
                self.is_running = True
                logger.info(f"Matrix nio 客户端已初始化，存储路径: {STORE_PATH}")
                return True
        finally:
            db.close()
        return False
    
    async def start_sync(self, message_handler: Callable = None):
        """开始同步消息"""
        if not self.is_running or not self.client:
            logger.warning("Matrix未连接")
            return
        
        self.on_message_callback = message_handler
        
        # 登录
        try:
            login_resp = await self.client.login(self.password)
            logger.info(f"Matrix登录成功: {login_resp}")
            
            # 加载加密存储
            logger.info("加载加密存储...")
            
            # 第一次同步获取房间密钥
            sync_resp = await self.client.sync(full_state=True)
            logger.info(f"初始同步完成: next_batch={sync_resp.next_batch}")
            
            # 注册消息处理器 - 普通文本消息
            self.client.add_event_callback(self._handle_nio_message, RoomMessageText)
            # 注册加密消息处理器（解密后）
            self.client.add_event_callback(self._handle_encrypted_message, MegolmEvent)
            
            logger.info("Matrix消息回调已注册")
            
            # 使用 sync_forever 自动处理事件（后台任务）
            asyncio.create_task(self._run_sync_forever())
            logger.info("Matrix nio sync_forever 任务已启动")
        except Exception as e:
            logger.error(f"Matrix启动失败: {e}")
            import traceback
            logger.error(traceback.format_exc())
    
    async def _run_sync_forever(self):
        """运行 sync_forever，自动处理所有事件"""
        try:
            logger.info("开始 Matrix sync_forever...")
            await self.client.sync_forever(timeout=30000, full_state=True)
        except Exception as e:
            logger.error(f"sync_forever 错误: {e}")
            self.is_running = False
    
    async def _handle_encrypted_message(self, room, event):
        """处理加密消息（MegolmEvent）"""
        logger.info(f"收到加密消息: [{room.room_id}] event_id={event.event_id}")
        
        # MegolmEvent 需要解密，nio 会自动解密并转换为普通消息事件
        # 解密后会触发 RoomMessageText 回调，所以这里只是记录
        # 如果解密失败，检查是否有密钥
        pass
    
    async def _handle_nio_message(self, room, event):
        """处理 nio 收到的消息"""
        # 忽略自己发送的消息
        sender = event.sender
        if sender == self.user_id:
            logger.debug(f"忽略自己发送的消息: {sender}")
            return
        
        message_text = event.body.strip()
        
        logger.info(f"Matrix收到消息: [{room.room_id}] {sender}: {message_text}")
        
        # 保存房间ID
        self.last_room_id = room.room_id
        
        db = SessionLocal()
        try:
            conv_service = ConversationService(db)
            
            # 使用固定主用户
            main_user = conv_service.get_or_create_user(
                MAIN_USER_ID,
                display_name="主用户",
                user_type='web'
            )
            
            # 处理 /new 命令
            if message_text == "/new":
                conversation = conv_service.create_conversation(main_user.id)
                await self.send_message(room.room_id, "✅ 已创建新会话")
                logger.info(f"Matrix创建新会话: {conversation.conversation_id}")
                
                if self.on_message_callback:
                    await self.on_message_callback(
                        action="new_conversation",
                        conversation_id=conversation.conversation_id,
                        room_id=room.room_id
                    )
                return
            
            # 获取最新会话
            conversations = conv_service.get_user_conversations(main_user.id)
            if not conversations:
                conversation = conv_service.create_conversation(main_user.id)
            else:
                conversation = conversations[0]
            
            # 保存用户消息
            user_msg = conv_service.add_message(
                conversation_id=conversation.id,
                role='user',
                content=message_text,
                source='matrix',
                extra_data={
                    'event_id': event.event_id,
                    'room_id': room.room_id,
                    'sender': sender
                }
            )
            
            # 发送"正在输入"状态
            try:
                await self.client.room_typing(room.room_id, typing_state=True)
            except Exception as e:
                logger.warning(f"发送输入状态失败: {e}")
            
            # 获取AI回复
            messages = conv_service.get_messages(conversation.id)
            ai_response = await ai_service.chat(messages)
            
            # 保存AI回复
            conv_service.add_message(
                conversation_id=conversation.id,
                role='assistant',
                content=ai_response,
                source='matrix'
            )
            
            # 发送回复
            await self.send_message(room.room_id, ai_response)
            
            # 关闭"正在输入"状态
            try:
                await self.client.room_typing(room.room_id, typing_state=False)
            except Exception as e:
                logger.warning(f"关闭输入状态失败: {e}")
            
            # 调用回调（用于网页同步）
            if self.on_message_callback:
                await self.on_message_callback(
                    action="chat",
                    conversation_id=conversation.conversation_id,
                    user_message=message_text,
                    room_id=room.room_id,
                    message_id=user_msg.id
                )
            
            logger.info(f"Matrix回复已发送: {ai_response[:50]}")
            
        except Exception as e:
            logger.error(f"处理Matrix消息失败: {e}")
            import traceback
            logger.error(traceback.format_exc())
            await self.send_message(room.room_id, f"处理消息时出错: {str(e)}")
            try:
                await self.client.room_typing(room.room_id, typing_state=False)
            except:
                pass
        finally:
            db.close()
    
    async def send_message(self, room_id: str, message: str):
        """发送消息到Matrix房间"""
        if not self.client:
            logger.error("Matrix客户端未初始化")
            return False
        
        try:
            await self.client.room_send(
                room_id,
                "m.room.message",
                {
                    "msgtype": "m.text",
                    "body": message
                }
            )
            logger.info(f"Matrix消息发送成功: {room_id}")
            return True
        except Exception as e:
            logger.error(f"发送Matrix消息错误: {e}")
            import traceback
            logger.error(traceback.format_exc())
            return False
    
    async def disconnect(self):
        """断开连接"""
        self.is_running = False
        if self.client:
            await self.client.close()


# 全局实例
matrix_bot = MatrixBot()