controller/RefundController.py

from fastapi import APIRouter, Request, Depends, HTTPException
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
from fastapi.requests import Request
from fastapi.responses import JSONResponse
import asyncio
router = APIRouter()
import asyncio
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.")
import sys,os
sys.path.append(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")))
jwt_bearer = JWTBearer()
import decode_token

from models.Database_Entity import StopSignal
from models.Database_Entity  import ChatHistory,PaymentCallbackLog
from service.RefundService import *
from models.Database_Entity import PaymentCallbackLog
from bson import ObjectId
from mongoengine import connect
MONGO_URI = "mongodb+srv://kltn20133118:XEYSVzYvEwsp5Cvo@cluster0.nnsw9.mongodb.net/?retryWrites=true&w=majority&appName=Cluster0"
connect("chatbot_hmdrinks", host=MONGO_URI)


async def refund_by_type_and_code(type: str, code: str):
    if type.lower() == "zalopay":
        log = PaymentCallbackLog.objects(type="zalopay", app_trans_id=code,is_refund = False).first()
        if not log:
            return {"code": -3, "message": "Không tìm thấy giao dịch ZaloPay"}
        data =  call_zalopay_refund(
            app_trans_id=code,
            amount=log.raw_data.get("amount", 0),
            description="Hoàn tiền ZaloPay"
        )
        return_code = data.get("return_code")
        if return_code == 3:
            log.is_refund = True
            log.save()
            return {"code": 0 , "message": f"Hoàn tiền thành công", "data": data}
        else:
            log.is_refund = False
            log.save()
            return {"code": -1 , "message": f"Hoàn tiền thất bại", "data": data}
      

    elif type.lower() == "vnpay":
        log = PaymentCallbackLog.objects(type="vnpay", txn_ref=code, is_refund = False).first()
        if not log:
            return {"code": -2, "message": "Không tìm thấy giao dịch VNPay"}
        raw = log.raw_data
        data =  call_vnpay_refund(
            txn_ref=code,
            amount=int(raw.get("vnp_Amount", 0)),  # VNPAY trả về x100
            transaction_date=raw.get("vnp_PayDate"),
            transaction_no=raw.get("vnp_TransactionNo"),
            create_by="system_refund",
            order_info=raw.get("vnp_OrderInfo", "Hoàn tiền VNPay")
        )
  
        resultCode = data.get("data").get("vnp_ResponseCode")
        message = data.get("data").get("vnp_Message")
        if resultCode == "00":
            log.is_refund = True
            log.save()
            return {"code": 0 , "message": f"Hoàn tiền thành công {message}", "data": data}
        else:
            log.is_refund = False
            log.save()
            return {"code": -1 , "message": f"Hoàn tiền thất bại {message}", "data": data}

    elif type.lower() == "momo":
        log = PaymentCallbackLog.objects(type="momo", order_id=code,is_refund = False).first()
        if not log:
            return {"code": -3, "message": "Không tìm thấy giao dịch MoMo"}
        if log.raw_data.get("payType", "") != "qr":
            return {"code": -2 , "message": f"Payment không thể hoàn tiền với ", "data": data}
        data =  call_momo_refund(
            trans_id=log.raw_data.get("transId", 0),
            amount=log.raw_data.get("amount", 0),
            description=f"Hoàn tiền MoMo cho giao dịch {code}"
        )
        resultCode = data.get("resultCode")
        if resultCode == 0:
            log.is_refund = True
            log.save()
            return {"code": 0 , "message": f"Hoàn tiền thành công", "data": data}
        else:
            log.is_refund = False
            log.save()
            return {"code": -1 , "message": f"Hoàn tiền thất bại", "data": data}
    else:
        return {"code": -4, "message": f"Không hỗ trợ cổng thanh toán '{type}'"}

from fastapi import  HTTPException
from pydantic import BaseModel


class Refund(BaseModel):
    type: str
    code: str


@router.post("/refund")
async def refund_endpoint(request: Refund,token: str = Depends(jwt_bearer)):
    type = request.type
    code = request.code
    user_role = decode_token.JwtService.extract_user_role(token)
    if user_role != "ADMIN":
        return JSONResponse(content={"message": "Not allow"}, status_code=404)
    
    data = asyncio.run(refund_by_type_and_code(type = type,code=code))
    if data.get("code") != 0 :
        return JSONResponse(content={"message": f"Not allow type {type}","status": -1, "data":data}, status_code=404)
    else:
        return JSONResponse(
        content={
            "status": 0,
            "data": data
        },
        status_code=200
    )