from django.shortcuts import render
from rest_framework import viewsets, status
from rest_framework.response import Response
from rest_framework.settings import api_settings

from courses import models
from courses import serializers
# Create your views here.


class CoursesViewSet(viewsets.ModelViewSet):
    def list(self, request):
        coursesList = models.Courses.objects.all()
        serializer = serializers.CoursesSerializer(coursesList, many=True)
        return Response(serializer.data)

    def retrieve(self, request, pk=None):
        try:
            courses = models.Courses.objects.get(id=pk)
        except models.Courses.DoesNotExist:
            return Response(status=status.HTTP_404_NOT_FOUND)
        serializer = serializers.CoursesSerializer(courses)
        return Response(serializer.data)

    def destroy(self, request, pk=None):
        try:
            courses = models.Courses.objects.get(id=pk)
        except models.Courses.DoesNotExist:
            return Response(0)
        courses.delete()
        return Response(1)

    def create(self, request):
        serializer = serializers.CoursesSerializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        headers = self.get_success_headers(serializer.data)
        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)

    def perform_create(self, serializer):
        serializer.save()

    def get_success_headers(self, data):
        try:
            return {'Location': str(data[api_settings.URL_FIELD_NAME])}
        except (TypeError, KeyError):
            return {}

    def update(self, request, pk=None):
        print(666)
        return Response(1)