from annoying.decorators import ajax_request, render_to
from django.shortcuts import render_to_response
from django.template import RequestContext
from snipts.utils import get_lexers_list
from django.db.models import Count
from taggit.models import Tag


@ajax_request
def lexers(request):
    lexers = get_lexers_list()
    objects = []

    for l in lexers:

        try:
            filters = l[2]
        except IndexError:
            filters = []

        try:
            mimetypes = l[3]
        except IndexError:
            mimetypes = []

        objects.append({
            'name': l[0],
            'lexers': l[1],
            'filters': filters,
            'mimetypes': mimetypes
        })

    return {'objects': objects}
def sitemap(request):

    tags = Tag.objects.filter(snipt__public=True)
    tags = tags.annotate(count=Count('taggit_taggeditem_items__id'))
    tags = tags.order_by('-count')[:1000]

    return render_to_response('sitemap.xml',
                             {'tags': tags},
                             context_instance=RequestContext(request),
                             mimetype='application/xml')

@render_to('tags.html')
def tags(request):

    all_tags = Tag.objects.filter(snipt__public=True).order_by('name')
    all_tags = all_tags.annotate(count=Count('taggit_taggeditem_items__id'))

    popular_tags = Tag.objects.filter(snipt__public=True)
    popular_tags = popular_tags.annotate(count=Count('taggit_taggeditem_items__id'))
    popular_tags = popular_tags.order_by('-count')[:20]
    popular_tags = sorted(popular_tags, key=lambda tag: tag.name)

    return {
        'all_tags': all_tags,
        'tags': popular_tags
    }