from django.shortcuts import get_object_or_404
from django.utils import timezone
from django.views.generic import ListView, DetailView
from rest_framework import viewsets
from django_filters import DateTimeFromToRangeFilter
from django_filters.rest_framework import FilterSet
from django_filters.widgets import RangeWidget
from mhackspace.blog.models import Post, Category
from mhackspace.blog.serializers import PostSerializer, CategorySerializer


class BlogPost(DetailView):
    context_object_name = "post"
    queryset = Post.objects.filter(active=True, members_only=False)

    def get_context_data(self, *args, **kwargs):
        context = super(BlogPost, self).get_context_data(*args, **kwargs)
        context["open_graph"] = {
            "image": self.object.image,
            "title": self.object.title,
            "type": "blog",
            "description": self.object.excerpt,
        }
        return context


class PostList(ListView):
    context_object_name = "posts"
    paginate_by = 5

    def get_queryset(self):
        if "category" in self.kwargs:
            self.category = get_object_or_404(
                Category, slug=self.kwargs["category"]
            )
            return Post.objects.filter(
                active=True,
                categories=self.category,
                published_date__lte=timezone.now(),
                members_only=False,
            )

        return Post.objects.filter(
            active=True, published_date__lte=timezone.now(), members_only=False
        )


class PostFilter(FilterSet):
    published_date = DateTimeFromToRangeFilter(
        widget=RangeWidget(attrs={"placeholder": "dd/mm/yyyy hh:mm"})
    )
    updated_date = DateTimeFromToRangeFilter(
        widget=RangeWidget(attrs={"placeholder": "dd/mm/yyyy hh:mm"})
    )

    class Meta:
        model = Post
        fields = (
            "title", "slug", "author__name", "published_date", "updated_date"
        )


class PostViewSet(viewsets.ModelViewSet):
    queryset = Post.objects.filter(active=True)
    filter_class = PostFilter
    serializer_class = PostSerializer
    search_fields = ("title", "slug", "categories", "author__name")
    ordering_fields = ("title", "published_date", "updated_date", "author")


class CategoryViewSet(viewsets.ModelViewSet):
    queryset = Category.objects.all()
    serializer_class = CategorySerializer
    search_fields = ("name", "slug")
    ordering_fields = ("name", "slug")
    filter_fields = ("name", "slug")