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from fastapi import APIRouter, Form, Request,Depends,HTTPException,BackgroundTasks
from service import ChatService
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from request import RequestChat
from fastapi.requests import Request
from fastapi.responses import JSONResponse
import asyncio
router = APIRouter()
import asyncio
# Lưu task đang chạy theo chat_history_id
task_registry: dict[str, asyncio.Task] = {}
# Lưu stop_event để dừng từng task
stop_events: dict[str, asyncio.Event] = {}
import decode_token
from models.Database_Entity import StopSignal
from models.Database_Entity import ChatHistory, User
from repository.MySQL import UserRepository
class JWTBearer(HTTPBearer):
def __init__(self, auto_error: bool = True):
super(JWTBearer, self).__init__(auto_error=auto_error)
async def __call__(self, request: Request):
credentials: HTTPAuthorizationCredentials = await super(JWTBearer, self).__call__(request)
if credentials:
if credentials.scheme != "Bearer":
raise HTTPException(status_code=401, detail="Invalid authentication scheme.")
return credentials.credentials
else:
raise HTTPException(status_code=401, detail="Invalid authorization code.")
jwt_bearer = JWTBearer()
@router.get("/chat/user_history")
async def get_user_chat_history(token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
return await ChatService.get_user_chat_history(user_id_token)
except Exception as e:
print("Lỗi khi gọi user history chat:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
@router.post("/new_chat/create/")
async def create_chat(token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
new_chat = await ChatService.create_new_chat_history(user_id_token)
return new_chat
except Exception as e:
print("Lỗi khi gọi create new chat:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
from bson import ObjectId
@router.post("/question")
async def question(
request: RequestChat.ChatWithServer,
background_tasks: BackgroundTasks,
token: str = Depends(jwt_bearer)
):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
user_role = decode_token.JwtService.extract_user_role(token)
chat_id = request.chat_history_id
stop_event = asyncio.Event()
stop_events[chat_id] = stop_event
print(f"[CREATE] stop_event id: {id(stop_event)} for chat_id: {chat_id}")
chat_history = ChatHistory.objects(pk=ObjectId(chat_id)).first()
if chat_history:
signal = StopSignal.objects(chat_history=chat_history).first()
if not signal:
signal = StopSignal(chat_history=chat_history)
signal.is_stopped = False
signal.stopped_at = None
signal.save()
async def run_chat():
try:
result = await ChatService.chat_with_user(
request.user_input,
user_id_token,
request.language,
user_role,
token,
chat_id,
stop_event
)
return result
except asyncio.CancelledError:
print(f"🛑 Task {chat_id} was cancelled by asyncio.")
return {"status": "cancelled"}
except Exception as e:
print(f"❌ Lỗi trong task {chat_id}:", e)
return {"error": str(e)}
finally:
# Dọn dẹp
stop_events.pop(chat_id, None)
task_registry.pop(chat_id, None)
task = asyncio.create_task(run_chat())
task_registry[chat_id] = task
return await task
except Exception as e:
print("Lỗi khi chạy:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
from datetime import datetime
@router.post("/stop-task/{chat_history_id}")
async def stop_task(chat_history_id: str, token: str = Depends(jwt_bearer)):
user_id = int(decode_token.JwtService.extract_user_id(token))
if not isinstance(user_id, int) or user_id <= 0:
raise HTTPException(status_code=400, detail="Invalid user_id: must be a positive integer")
check = UserRepository.getUserByUserId(user_id)
if check is None:
raise HTTPException(status_code=400, detail="User not found or has been deleted in MySQL")
check_history_id = UserRepository.getChatHistory(user_id,chat_history_id)
if check_history_id is None:
raise HTTPException(status_code=400, detail="Chat not found or has been deleted in MySQL")
user = User.objects(user_id=user_id).first()
if not user:
return {"error": "User not found or has been deleted in MongoDB"}
event = stop_events.get(chat_history_id)
task = task_registry.get(chat_history_id)
print(f"🚨 Đã vào stop-task với chat_history_id = {chat_history_id}")
print(f"🔎 stop_event: {event}, task: {task}")
# Set event trong RAM
if event:
print(f"🛑 Setting stop_event for {chat_history_id}")
event.set()
# Cancel task
if task:
print(f"🔪 Cancelling task for {chat_history_id}")
task.cancel()
# Cập nhật trạng thái stop vào MongoDB
from bson import ObjectId
chat_history = ChatHistory.objects(pk=ObjectId(chat_history_id)).first()
if chat_history:
signal = StopSignal.objects(chat_history=chat_history).first()
if not signal:
signal = StopSignal(chat_history=chat_history)
signal.is_stopped = True
signal.stopped_at = datetime.utcnow()
signal.save()
return {"message": f"Stop signal sent for chat_history_id {chat_history_id}"}
@router.put("/regenerate")
async def regenerate(request: RequestChat.Regenerate, token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
user_role = decode_token.JwtService.extract_user_role(token)
chat_id = request.chat_id
stop_event = asyncio.Event()
stop_events[chat_id] = stop_event
print(f"[CREATE] stop_event id: {id(stop_event)} for chat_id: {chat_id}")
chat_history = ChatHistory.objects(pk=ObjectId(chat_id)).first()
if chat_history:
signal = StopSignal.objects(chat_history=chat_history).first()
if not signal:
signal = StopSignal(chat_history=chat_history)
signal.is_stopped = False
signal.stopped_at = None
signal.save()
async def run_chat():
try:
new_chat = await ChatService.regenerate(request.question_new ,user_id_token,request.languages ,user_role,token,request.chat_id,stop_event)
return new_chat
except asyncio.CancelledError:
print(f"🛑 Task {chat_id} was cancelled by asyncio.")
return {"status": "cancelled"}
except Exception as e:
print(f"❌ Lỗi trong task {chat_id}:", e)
return {"error": str(e)}
task = asyncio.create_task(run_chat())
task_registry[chat_id] = task
return await task
except Exception as e:
print("Lỗi khi gọi regenerate:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
@router.put("/update")
async def update_chat_name(request: RequestChat.UpdateNameChat, token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
updated_chat = await ChatService.update_chat_name(request.chat_id, request.name_chat,user_id_token)
return updated_chat
except Exception as e:
print("Lỗi khi gọi update:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
@router.delete("/delete")
async def delete_chat(request: RequestChat.DeleteChatRequest, token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
deleted_chat = await ChatService.soft_delete_chat(request.chat_id,user_id_token)
return deleted_chat
except Exception as e:
print("Lỗi khi gọi deleted:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500)
@router.get("/list_detail_chat/{chat_id}")
async def get_chat_details(chat_id: str, token: str = Depends(jwt_bearer)):
try:
user_id_token = decode_token.JwtService.extract_user_id(token)
return await ChatService.get_chat_details(chat_id,user_id_token)
except Exception as e:
print("Lỗi khi gọi list_detail_chat:", e)
return JSONResponse(content={"error": "Internal server error"}, status_code=500) |