import json
from django.shortcuts import render
from django.shortcuts import get_object_or_404

from rest_framework import viewsets
# Create your views here.
from django.http import HttpResponse, JsonResponse
from rest_framework.parsers import JSONParser

from django.contrib.auth.models import User
from rest_framework import serializers
from rest_framework.response import Response


from .serializer import UserProfileSerializer, UserSerializer

def user_list(request):
    '''
    List all users or create a user
    '''
    if request.method == 'GET':
        queryset = User.objects.all()
        serializer = UserSerializer(queryset, many=True)
        return JsonResponse(serializer.data, safe=False)

    elif request.method == 'POST':
        data = JSONParser().parse(request)
        serializer = UserSerializer(data=data)
        if serializer.is_valid():
            serializer.save()
            return JsonResponse(serializer.data, status=201)
        return JsonResponse(serializer.errors, status=400)

def user_details(request, pk):
    if request.method == 'GET':
        try:
            queryset = User.objects.get(pk=pk)
            serializer = UserSerializer(queryset)
            return JsonResponse(serializer.data, safe=False)
        except:
            return JsonResponse({"error":"User does not exist"})