from rest_framework.views import APIView
from rest_framework.response import Response
from drf_yasg.utils import swagger_auto_schema
from drf_yasg import openapi
from rest_framework import status

from utils.utils import get_first_error

from ..models import VerificationMailRequest
from ..serializers import UserSignupSerializer
from ..tasks import send_account_verification_email

class SignupUserView(APIView):

    @swagger_auto_schema(
        operation_summary="Signup",
        tags=["Auth"],
        request_body=UserSignupSerializer,
        responses={
            status.HTTP_201_CREATED: openapi.Response(
                description="Signup Successful.",
                schema=openapi.Schema(
                    type=openapi.TYPE_OBJECT,
                    properties={
                        "data": openapi.Schema(type=openapi.TYPE_OBJECT),
                        "message": openapi.Schema(type=openapi.TYPE_STRING),
                        "success": openapi.Schema(type=openapi.TYPE_BOOLEAN),
                        "statusCode": openapi.Schema(type=openapi.TYPE_INTEGER),
                    },
                ),
            ),
            status.HTTP_400_BAD_REQUEST: openapi.Response(
                description="Bad request, validation error.",
                schema=openapi.Schema(
                    type=openapi.TYPE_OBJECT,
                    properties={
                        "errors": openapi.Schema(
                            type=openapi.TYPE_ARRAY,
                            items=openapi.Schema(type=openapi.TYPE_STRING),
                        ),
                        "message": openapi.Schema(type=openapi.TYPE_STRING),
                        "success": openapi.Schema(type=openapi.TYPE_BOOLEAN),
                        "statusCode": openapi.Schema(type=openapi.TYPE_INTEGER),
                    },
                ),
            ),
        },
    )
    def post(self, request):
        serializer = UserSignupSerializer(data=request.data)
        if not serializer.is_valid():
            return Response(
                {
                    "success": False,
                    "message": get_first_error(serializer.errors, "Signup failed"),
                    "statusCode": status.HTTP_400_BAD_REQUEST,
                },
                status=status.HTTP_400_BAD_REQUEST,
            )

        user = serializer.save()

        verification_mail = VerificationMailRequest.objects.create(user=user)
        verification_mail.generate_otp()

        send_account_verification_email.delay(user.id, verification_mail.otp)

        return Response(
            {
                "success": True,
                "message": "Signup successful",
                "statusCode": status.HTTP_201_CREATED,
            },
            status=status.HTTP_201_CREATED,
        )