1.添加定时任务(每天凌晨四点处理redis记录的删除，存储入mysql持久化操作)

2.修复了prompt中没有用户输入信息的bug
3.优化了更新类接口代码(删除了db.add()代码)

app/controllers/chat_controller.py

@@ -89,13 +89,20 @@ def vad_preprocess(audio):
         return ('A'*1280)
     return audio[:1280],audio[1280:]
 
+#更新session活跃时间
+def update_session_activity(session_id,db):
+    try:
+        db.query(Session).filter(Session.id == session_id).update({"last_activity": datetime.now()})
+        db.commit()
+    except Exception as e:
+        db.roolback()
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(e))
 #--------------------------------------------------------
 
 # 创建新聊天
 async def create_chat_handler(chat: ChatCreateRequest, db, redis):
     # 创建新的UserCharacter记录
     new_chat = UserCharacter(user_id=chat.user_id, character_id=chat.character_id)
-    
     try:
         db.add(new_chat)
         db.commit()
@@ -279,8 +286,6 @@ async def sct_llm_handler(ws,session_id,response_type,llm_info,tts_info,db,redis
                 logger.debug(f"llm返回结果: {llm_response}")
                 await ws.send_text(json.dumps({"type": "end", "code": 200, "msg": ""}, ensure_ascii=False)) 
                 is_end = False  #重置is_end标志位
-                session_content = get_session_content(session_id,redis,db)
-                messages = json.loads(session_content["messages"])
                 messages.append({'role': 'assistant', "content": llm_response})
                 session_content["messages"] = json.dumps(messages,ensure_ascii=False) #更新对话
                 redis.set(session_id,json.dumps(session_content,ensure_ascii=False)) #更新session
@@ -304,6 +309,7 @@ async def streaming_chat_temporary_handler(ws: WebSocket, db, redis):
 
 
     session_id = await future_session_id #获取session_id
+    update_session_activity(session_id,db)
     response_type = await future_response_type #获取返回类型
     tts_info = json.loads(get_session_content(session_id,redis,db)["tts_info"])
     llm_info = json.loads(get_session_content(session_id,redis,db)["llm_info"])
@@ -425,8 +431,6 @@ async def scl_llm_handler(ws,session_id,response_type,llm_info,tts_info,db,redis
                     await ws.send_text(json.dumps({"type": "end", "code": 200, "msg": ""}, ensure_ascii=False)) 
                     is_end = False
 
-                    session_content = get_session_content(session_id,redis,db)
-                    messages = json.loads(session_content["messages"])
                     messages.append({'role': 'assistant', "content": llm_response})
                     session_content["messages"] = json.dumps(messages,ensure_ascii=False) #更新对话
                     redis.set(session_id,json.dumps(session_content,ensure_ascii=False)) #更新session
@@ -454,6 +458,7 @@ async def streaming_chat_lasting_handler(ws,db,redis):
     asyncio.create_task(scl_asr_handler(user_input_q,llm_input_q,input_finished_event,asr_finished_event))
 
     session_id = await future_session_id #获取session_id
+    update_session_activity(session_id,db)
     response_type = await future_response_type #获取返回类型
     tts_info = json.loads(get_session_content(session_id,redis,db)["tts_info"])
     llm_info = json.loads(get_session_content(session_id,redis,db)["llm_info"])
@@ -575,8 +580,6 @@ async def voice_call_llm_handler(ws,session_id,llm_info,tts_info,db,redis,asr_re
                     await ws.send_text(json.dumps({"type": "end", "code": 200, "msg": ""}, ensure_ascii=False)) 
                     is_end = False
 
-                    session_content = get_session_content(session_id,redis,db)
-                    messages = json.loads(session_content["messages"])
                     messages.append({'role': 'assistant', "content": llm_response})
                     session_content["messages"] = json.dumps(messages,ensure_ascii=False) #更新对话
                     redis.set(session_id,json.dumps(session_content,ensure_ascii=False)) #更新session
@@ -622,6 +625,7 @@ async def voice_call_handler(ws, db, redis):
 
     #获取session内容
     session_id = await future #获取session_id
+    update_session_activity(session_id,db)
     tts_info = json.loads(get_session_content(session_id,redis,db)["tts_info"])
     llm_info = json.loads(get_session_content(session_id,redis,db)["llm_info"])