# Create your views here.
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.template import Context, loader
from django.views.generic.simple import direct_to_template
from blog.models import Post, Tag

def index(request, page=0):
    item_count = 7

    page = int(page)
    start_num = (page * item_count)
    end_num = start_num + item_count

    post_list = Post.objects.all().order_by("-postdate")[start_num:end_num]

    has_previous = page > 0
    has_next = end_num < Post.objects.all().count()

    c = {
        'postlist': post_list,
        'has_next': has_next,
        'has_previous': has_previous,
        'next_page': page + 1,
        'previous_page': page - 1
    }

    return direct_to_template(request, "blog/posts.html", c)

def atom(request):
    post_list = Post.objects.all().order_by("-postdate")[0:15]
    c = {
        'postlist': post_list,
    }

    return direct_to_template(request, "blog/rss.xml", c)

def post(request, post_id):
    post = Post.objects.filter(pk=post_id)
    t = loader.get_template("blog/posts.html")
    c = Context({
            'postlist': post,
    })

    return HttpResponse(t.render(c))

def tags(request):
    tag_list = Tag.objects.all()
    t = loader.get_template("blog/tags.html")
    c = Context({
            'taglist': tag_list,
    })

    return HttpResponse(t.render(c))

def tag(request, tag_name):
    post_list = Post.objects.filter(tags__name=tag_name)
    t = loader.get_template("blog/posts.html")
    c = Context({
            'postlist': post_list,
    })

    return HttpResponse(t.render(c))