from django.views.generic import ListView
from django.views.generic.detail import DetailView
from django.contrib.syndication.views import Feed
from django.apps import apps
from django.conf import settings

from utils.views import PaginatedListView, LuxDetailView

from ..models import Post, PostType
from taxonomy.models import Category


class GuideListView(PaginatedListView):
    """
    Return a list of Entries in reverse chronological order
    """
    model = Post
    template_name = "posts/guide_base.html"

    def get_queryset(self):
        queryset = super(GuideListView, self).get_queryset()
        return queryset.filter(status__exact=1).filter(post_type__in=[PostType.REVIEW,PostType.FIELD_TEST]).order_by('-pub_date').prefetch_related('location').prefetch_related('featured_image')


class GuideTopicListView(PaginatedListView):
    """
    Return a list of Posts by topic in reverse chronological order
    """
    model = Post
    template_name = "posts/guide_by_topic.html"

    def get_queryset(self):
        queryset = super(GuideTopicListView, self).get_queryset()
        topic = Category.objects.get(slug=self.kwargs['topic'])
        return queryset.filter(status__exact=1).filter(topics__slug=topic.slug).order_by('-pub_date').prefetch_related('featured_image')

    def get_context_data(self, **kwargs):
        context = super(GuideTopicListView, self).get_context_data(**kwargs)
        topic = Category.objects.get(slug=self.kwargs['topic'])
        context['topic'] = topic
        context['breadcrumbs'] = ('Guides', topic.name )


        Category.objects.get(slug=self.kwargs['topic'])
        return context


class ReviewsListView(GuideListView):
    template_name = "posts/post.html"

    def get_queryset(self):
        queryset = super(ReviewsListView, self).get_queryset()
        return queryset.filter(post_type__in=[0,1]).filter(status__exact=1).order_by('-pub_date').prefetch_related('location').prefetch_related('featured_image')
    
    def get_context_data(self, **kwargs):
        context = super(ReviewsListView, self).get_context_data(**kwargs)
        context['archive_type'] = 'Field Tests' 
        return context


class PostDetailView(LuxDetailView):
    model = Post 
    slug_field = "slug"

    def get_queryset(self):
        queryset = super(PostDetailView, self).get_queryset()
        return queryset.select_related('location').prefetch_related('field_notes')

    def get_context_data(self, **kwargs):
        context = super(PostDetailView, self).get_context_data(**kwargs)
        related = []
        for obj in self.object.related.all():
            model = apps.get_model(obj.model_name.app_label, obj.model_name.model)
            related.append(model.objects.get(slug=obj.slug, pub_date=obj.pub_date))
        context['related'] = related
        return context

    def get_template_names(self):
        obj = self.get_object()
        return ["posts/%s_detail.html" % obj.get_post_type_display(), 'posts/post_detail.html']


class PostDetailViewTXT(PostDetailView):
    template_name = "posts/entry_detail.txt"


class PostsRSSFeedView(Feed):
    title = "VanLifeReviews.com: "
    link = "/"
    description = "Latest reviews, stories and guides"
    description_template = 'feeds/blog_description.html'

    def items(self):
        return Post.objects.filter(status__exact=1).order_by('-pub_date')[:10]
    
    def item_pubdate(self, item):
        """
        Takes an item, as returned by items(), and returns the item's
        pubdate.
        """
        return item.pub_date