from django.contrib.auth.models import User, Group
from django.shortcuts import render
import django.views.generic
from rest_framework import authentication, permissions, status, viewsets
from rest_framework.generics import CreateAPIView
from rest_framework.response import Response
from rest_framework.views import APIView

import timer.serializers
import timer.models
import timer.forms

import datetime
from django.utils.timezone import localtime


class OfficeHoursAPI(CreateAPIView):

  authentication_classes = (authentication.TokenAuthentication,
                            authentication.SessionAuthentication,
                            authentication.BasicAuthentication)
  permission_classes = (permissions.IsAuthenticated,)

  queryset = timer.models.OfficeHours.objects.all()
  # serializer_class = timer.serializers.GroupSerializer

  def create(self, request, *args, **kwargs):
    begins_at = request.data.get('begins_at')
    if not begins_at:
      raise
    try:
      begins_at = timer.models.OfficeHours.parse_time_str(begins_at)
      ends_at = timer.models.OfficeHours.get_ends_at(begins_at)
      oh, __ = timer.models.OfficeHours.objects.get_or_create(
        begins_at=begins_at,
        ends_at=ends_at,
        user=request.user)
    except ValueError:
      raise

    resp_data = {
      'begins_at': oh.get_begins_at_str,
      'ends_at': oh.get_ends_at_str,
    }

    return Response(resp_data, status=status.HTTP_201_CREATED)


class OfficeHoursFormView(django.views.generic.FormView):
  template_name = 'index.html'
  form_class = timer.forms.OfficeHoursForm

  def get_context_data(self, **kwargs):
    context = super().get_context_data(**kwargs)
    today_oh = timer.models.OfficeHours.objects.filter(begins_at__date=localtime().date()).last()
    context['today_oh'] = today_oh
    return context