from datetime import datetime, timedelta
from django.core.serializers.json import DjangoJSONEncoder
from django.views.decorators.http import require_http_methods
from django.http import JsonResponse


# needed to serialize the datetime object
class DateTimeEncoder(DjangoJSONEncoder):
    def default(self, obj):
        if isinstance(obj, datetime):
            return obj.isoformat()
        return super().default(obj)


@require_http_methods(['GET'])
def response_ajax(request):
    start_date = datetime.now()
    end_date = start_date + timedelta(days=4)
    bookings = Booking.objects \
        .filter(organization_id=request.user.organization_id,
                booking_time__date__range=(start_date.date(), end_date.date()) \
        .values('foo', 'bar', 'booking_time') # this is important for serialize data
    offices = Office.objects \
        .filter(organization_id__exact=request.user.organization_id) \
        .values('foo', 'bar')

    context = {
        'bookings': list(bookings) # querysets cannot be serialized
        'offices': list(offices)
    }

    return JsonResponse(context, cls=DjangoJSONEncoder)