import urllib
import requests

from django.conf import settings

from rest_framework import viewsets
from rest_framework.decorators import action
from rest_framework import status
from rest_framework.response import Response

from .models import Element, Partner
from .serializers import PartnerSerializer, ElementSerializer

import logging

logger = logging.getLogger("root")


class PartnerViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows partners to be viewed or edited.
    """

    queryset = Partner.objects.all()
    serializer_class = PartnerSerializer

    @action(detail=False, methods=["get"], url_path=r"external")
    def get_remote_partners(self, request):
        params = {
            "$format": "json",
            "$select": ",".join(["НаименованиеПолное", "Description", "Ref_Key"]),
            "$filter": "Недействителен eq false",
        }
        remote_url = (
            "https://1c.svs-tech.pro/UNF/odata/standard.odata/Catalog_Контрагенты?"
            + "&".join([f"{p}={params[p]}" for p in params])
        )
        data = requests.get(remote_url, headers={"Authorization": settings.ODATA_AUTH})
        try:
            parsed_data = data.json()
            return Response(parsed_data["value"])
        except Exception as e:
            logger.error(e)
            return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)


class ElementViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows elements to be viewed or edited.
    """

    queryset = Element.objects.all()
    serializer_class = ElementSerializer

    @action(detail=False, methods=["get"], url_path=r"external_categories")
    def get_remote_categories(self, request):
        try:
            params = {
                "$format": "json",
                "$select": ",".join(["Description", "Ref_Key", "Parent_Key"]),
                "$filter": "Parent_Key eq guid'a6aadfe8-7e0f-11ee-ab5a-a47a2bd811cb'",
            }
            remote_url = (
                "https://1c.svs-tech.pro/UNF/odata/standard.odata/Catalog_КатегорииНоменклатуры?"
                + "&".join([f"{p}={params[p]}" for p in params])
            )
            data = requests.get(
                remote_url, headers={"Authorization": settings.ODATA_AUTH}
            )
            parsed_data = data.json()

            params["$filter"] = " or ".join(
                [f"Parent_Key eq guid'{v['Ref_Key']}'" for v in parsed_data["value"]]
            )
            remote_url = (
                "https://1c.svs-tech.pro/UNF/odata/standard.odata/Catalog_КатегорииНоменклатуры?"
                + "&".join([f"{p}={params[p]}" for p in params])
            )
            data = requests.get(
                remote_url, headers={"Authorization": settings.ODATA_AUTH}
            )
            parsed_data = data.json()
            return Response(parsed_data["value"])
        except Exception as e:
            logger.error(e)
            return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)

    @action(detail=False, methods=["get"], url_path=r"external/(?P<cat_id>[^/.]+)")
    def get_remote_element(self, request, pk=None, cat_id=None):
        try:
            params = {
                "$format": "json",
                "$select": ",".join(["Description", "Ref_Key", "Parent_Key"]),
                "$filter": f"Parent_Key eq guid'{cat_id}'",
            }
            remote_url = (
                "https://1c.svs-tech.pro/UNF/odata/standard.odata/Catalog_Номенклатура?"
                + "&".join([f"{p}={params[p]}" for p in params])
            )
            data = requests.get(
                remote_url, headers={"Authorization": settings.ODATA_AUTH}
            )
            parsed_data = data.json()
            return Response(parsed_data["value"])
        except Exception as e:
            logger.error(e)
            return Response(status=status.HTTP_500_INTERNAL_SERVER_ERROR)