# -*- coding: utf-8 -*- 
from django.shortcuts import render
from .models import Post
from django.utils import timezone
from django.shortcuts import render, get_object_or_404, render_to_response
from django.shortcuts import redirect
from .forms import PostForm
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.contrib.auth.decorators import login_required


def post_list(request, page='1'):
    post_list = Post.objects.filter(published_date__lte=timezone.now()).order_by('-published_date')#[int(page)*5-5:int(page)*5]
    paginator = Paginator(post_list, 5)
    page = request.GET.get('page')
    try:
        posts = paginator.page(page)
    except PageNotAnInteger: # If page is not an integer, deliver first page.
        posts = paginator.page(1)
    except EmptyPage: # If page is out of range (e.g. 9999), deliver last page of results.
        posts = paginator.page(paginator.num_pages)
    return render_to_response('blog/post_list.html', {'posts': posts})

    
def search_by_tag(request, tag):
    tagged_posts = Post.objects.filter(tags__name=tag).order_by('-published_date')
    return render(request, 'blog/tag_listing.html', {'tagged_posts': tagged_posts})


def post_detail(request, pk):
        post = get_object_or_404(Post, pk=pk)
        tags = post.tags.names()
        if request.POST.get('action') == 'delete':
            print request.user.is_authenticated()

            post.delete()        
            return redirect('blog.views.post_list', 1)
        
        return render(request, 'blog/post_detail.html', {'post': post, 'tags': tags})

@login_required(login_url="/admin/login/?next=/blog/")    
def post_new(request):
        if request.method == "POST":
            form = PostForm(request.POST)
            if form.is_valid():
                post = form.save(commit=False)
                post.author = request.user
                post.published_date = timezone.now()
                post.save()
                form.save_m2m()
                return redirect('blog.views.post_detail', pk=post.pk)
        else:
            form = PostForm()
        return render(request, 'blog/post_edit.html', {'form': form})


@login_required(login_url="/admin/login/?next=/blog/")    
def post_edit(request, pk):
        post = get_object_or_404(Post, pk=pk)
        if request.method == "POST":
            form = PostForm(request.POST, instance = post)
            if form.is_valid():
                post = form.save(commit=False)
                post.author = request.user
               #post.published_date = timezone.now()
                post.save()
                form.save_m2m()
                return redirect('blog.views.post_detail', pk=post.pk)
        else:
            form = PostForm(instance=post)
        return render(request, 'blog/post_edit.html', {'form': form})