# third-party imports
from rest_framework.response import Response
from rest_framework import generics
from django_redis import get_redis_connection
from django.utils.decorators import method_decorator
from django.views.decorators.cache import cache_page

# app imports
from app.models import BhavCopyEquity
from app.serializers import BhavCopyEquitySerializer
from app.utils import populate_bhav_copy_data


cache = get_redis_connection("default")


# Create your views here.
class BhavCopyEquityView(generics.RetrieveAPIView):
    queryset = BhavCopyEquity.objects.all()

    def get(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = BhavCopyEquitySerializer(queryset, many=True)
        return Response(serializer.data)


class BhavCopyEquityDefaultRedisView(generics.RetrieveAPIView):
    queryset = BhavCopyEquity.objects.all()

    @method_decorator(cache_page(60*60*2))
    def get(self, request, *args, **kwargs):
        queryset = self.get_queryset()
        serializer = BhavCopyEquitySerializer(queryset, many=True)
        return Response(serializer.data)


class EmptyRespoinseView(generics.RetrieveAPIView):
    def get(self, request, *args, **kwargs):
        return Response([])


class BhavCopyEquityCustomRedisView(generics.RetrieveAPIView):
    def get(self, request, *args, **kwargs):
        # TODO: try stringified json
        pipe = cache.pipeline()
        stocks = cache.lrange("stocks", 0, -1)
        if len(stocks) == 0:
            populate_bhav_copy_data()
            stocks = cache.lrange("stocks", 0, -1)
        for stock in stocks:
            pipe.hgetall(f"stock:{stock}")
        return Response(pipe.execute())