from rest_framework import generics
from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework.reverse import reverse
from rest_framework.permissions import AllowAny
from rest_framework.exceptions import ParseError

from django.contrib.auth.models import User
from . import serializers


class UserList(generics.ListCreateAPIView):
    '''
    Endpoint que representa a lista de usuários, e permite que novos
    usuários sejam cadastrados.
    '''
    model = User
    serializer_class = serializers.UserSerializer


class UserDetail(generics.RetrieveUpdateAPIView):
    '''
    Endpoint que representa uma instancia de User, e permite que novos
    User sejam atualizados.
    '''
    model = User
    serializer_class = serializers.UserSerializer


@api_view(['GET'])
def api_root(request, format=None):
    '''
    The entry endpoint of our API.
    '''
    return Response({
        'users': reverse('user-list', request=request),
    })