# -*- coding: utf-8 -*-
"""
  Copyright 2012-2014 Grégory Soutadé

  This file is part of Dynastie.

  Dynastie is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  Dynastie is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with Dynastie.  If not, see <http://www.gnu.org/licenses/>.
"""
import os
import re
from datetime import datetime, date, time
from django.shortcuts import render
from django.contrib.auth import authenticate, login, logout
from django.http import HttpResponseRedirect, HttpResponse, Http404, HttpResponseForbidden
from django.contrib.auth.decorators import login_required
from django.views.decorators.csrf import csrf_exempt
from django.forms.models import inlineformset_factory
from django.core import mail
from django.core.mail import EmailMultiAlternatives

from dynastie.models import *
from dynastie.forms import *
from dynastie.search import *

from django.template.defaultfilters import register
from django.template import Variable, VariableDoesNotExist

@register.filter
def hash(object, attr):

    pseudo_context = { 'object' : object }
    try:
        value = Variable('object.%s' % attr).resolve(pseudo_context)
    except VariableDoesNotExist:
        value = None
    return value

def have_I_right(request, blog_id=None, post_id=None, must_be_superuser=False, cls=Post):
    b = None
    p = None

    if must_be_superuser and not request.user.is_superuser:
        raise Http404

    if post_id:
        p = cls.objects.get(pk=post_id)
        
        if p is None:
            raise Http404

        blog_id = p.blog.id

    if blog_id:
        if not request.user.is_superuser:
            b = Blog.objects.filter(pk=blog_id, writers=request.user.id)
            if not b:
                raise Http404
            b = b[0]
        else:
            b = Blog.objects.get(pk=blog_id)
    
        if b is None:
            raise Http404

    return (b, p)

def to_unicode(s):
    if type(s) == unicode: 
        return s
    else:
        return unicode(s, 'utf-8')

def createNavigationBar(blog_id, cur_page, nb_pages):
    if nb_pages == 0: return ''

    navigation_bar = ''
    if cur_page == 0:
        navigation_bar += '<< <'
    else:
        navigation_bar += '<a href="/blog/%d?page=0">&lt;&lt;</a> ' % blog_id
        navigation_bar += '<a href="/blog/%d?page=%d">&lt;</a> ' % (blog_id, cur_page-1)

    for i in range(nb_pages+1):
        if i == cur_page:
            navigation_bar += ' %d' % (i+1)
        else:
            navigation_bar += ' <a href="/blog/%d?page=%d">%d</a>' % (blog_id, i, i+1)

    if cur_page == nb_pages:
        navigation_bar += ' > >>'
    else:
        navigation_bar += '  <a href="/blog/%d?page=%d">&gt;</a>' % (blog_id, cur_page+1)
        navigation_bar += '  <a href="/blog/%d?page=%d">&gt;&gt;</a>' % (blog_id, nb_pages)

    return navigation_bar


def index(request):
    if request.user.is_authenticated:
            return HttpResponseRedirect('/blog')

    login_failed = False
    if 'login' in request.POST:
        user = authenticate(username=request.POST['login'], password=request.POST['password'])
        if user is None:
            login_failed = True
        else:
            login(request, user)
            if 'next' in request.GET:
                return HttpResponseRedirect(request.GET['next'])
            else:
                return HttpResponseRedirect('/blog')

    c = {'login_failed' : login_failed}

    return render(request, 'login.html', c)

def disconnect(request):
    logout(request)
    return HttpResponseRedirect('/')

@login_required
def user(request):
    c = {'users' : User.objects.all()}

    return render(request, 'user.html', c)

@login_required
def add_user(request):
    if not request.user.is_superuser:
        return HttpResponseRedirect('/user')
 
    if request.method == 'POST':
        if 'add' in request.POST:
            form = UserForm(request.POST)
            if form.is_valid():
                form = form.save()
                user = User.objects.get(pk=form.id)
                user.set_password(request.POST['password'])
                user.save()
                return HttpResponseRedirect('/user')
        else:
            return HttpResponseRedirect('/user')
    else:
        form = UserForm()

    return render(request, 'add_user.html', {'form': form})

@login_required
def edit_user(request, user_id):
    user = User.objects.get(pk=user_id)

    if user is None:
        raise Http404

    edited = False

    if request.method == 'POST':
        if int(user_id) != int(request.user.id) and (not request.user.is_superuser):
            return HttpResponseRedirect('/user')
        if 'edit' in request.POST:
            form = UserForm(request.POST, instance=user, initial={'password':''})
            if form.is_valid():
                form.save()
                if request.POST['password'] != '':
                    user.set_password(request.POST['password'])
                user.save()
                edited = True
        else:
            if 'delete' in request.POST and request.user.is_superuser:
                User.objects.get(pk=user_id).delete()
                return HttpResponseRedirect('/user')
            if 'cancel' in request.POST:
                return HttpResponseRedirect('/user')
    else:
        form = UserForm(instance=user, initial={'password':''})
        
    c = {'user_to_edit' : user, 'form' : form, 'edited' : edited}

    return render(request, 'edit_user.html', c)

@login_required
def category(request, blog_id):
    b,_ = have_I_right(request, blog_id)

    categories = Category.objects.filter(blog_id=blog_id)

    c = {'categories' : categories, 'blog' : b}

    return render(request, 'category.html', c)

@login_required
def add_category(request, blog_id):
    b,_ = have_I_right(request, blog_id)
    
    if request.method == 'POST':
        if 'add' in request.POST:
            form = CategoryForm(request.POST)
            form.instance.blog = b
            if form.is_valid():
                form = form.save()
                return HttpResponseRedirect('/category/' + str(b.id))
        else:
            return HttpResponseRedirect('/category/' + str(b.id))
    else:
        form = CategoryForm()

    return render(request, 'add_category.html', {'form': form, 'blog' : b})

@login_required
def edit_category(request, category_id):
    category = Category.objects.get(pk=category_id)

    if category is None:
        raise Http404

    b,_ = have_I_right(request, category.blog.id)
    
    if request.method == 'POST':
        if 'cancel' in request.POST:
            return HttpResponseRedirect('/category/' + str(b.id))
        if 'edit' in request.POST:
            name = category.name
            name = name.strip()
            form = CategoryForm(request.POST, instance=category)
            if form.is_valid():
                if request.POST['name'] != name:
                    category.remove()
                form.save()
            return HttpResponseRedirect('/category/' + str(b.id))
    else:
        form = CategoryForm(instance=category)

    c = {'category' : category, 'form' : form}

    return render(request, 'edit_category.html', c)

@login_required
def delete_category(request, category_id):
    category = Category.objects.get(pk=category_id)

    if category is None:
        raise Http404

    b,_ = have_I_right(request, category.blog.id)

    category.delete()

    return HttpResponseRedirect('/category/' + str(b.id))

@login_required
def tag(request, blog_id):
    b,_ = have_I_right(request, blog_id)

    tags = Tag.objects.filter(blog_id=blog_id)

    c = {'tags' : tags, 'blog' : b}

    return render(request, 'tag.html', c)

@login_required
def edit_tag(request, tag_id):
    tag = Tag.objects.get(pk=tag_id)

    if tag is None:
        raise Http404

    b,_ = have_I_right(request, tag.blog.id)
    
    if request.method == 'POST':
        if 'cancel' in request.POST:
            return HttpResponseRedirect('/tag/' + str(b.id))
        if 'edit' in request.POST:
            name = tag.name
            name = name.strip()
            form = TagForm(request.POST, instance=tag)
            if form.is_valid():
                if request.POST['name'] != name:
                    tag.remove()
                form.save()
            return HttpResponseRedirect('/tag/' + str(b.id))
    else:
        form = TagForm(instance=tag)

    c = {'tag' : tag, 'form' : form}

    return render(request, 'edit_tag.html', c)

@login_required
def delete_tag(request, tag_id):
    tag = Tag.objects.get(pk=tag_id)

    if tag is None:
        raise Http404

    b,_ = have_I_right(request, tag.blog.id)

    tag.delete()

    return HttpResponseRedirect('/tag/' + str(b.id))

@login_required
def blog(request):
    if request.user.is_superuser:
        b = Blog.objects.all()
    else:
        b = Blog.objects.filter(writers=request.user.id)

    c = {'blogs' : b}

    return render(request, 'blog.html', c)

@login_required
def add_blog(request):
    if not request.user.is_superuser:
        return HttpResponseRedirect('/blog')
    
    if request.method == 'POST':
        if 'add' in request.POST:
            form = BlogForm(request.POST)
            if form.is_valid():
                form = form.save()
                form.create()
                return HttpResponseRedirect('/blog')
        else:
            return HttpResponseRedirect('/blog')
    else:
        form = BlogForm()

    return render(request, 'add_blog.html', {'form': form})

@login_required
def view_blog(request, blog_id):
    b,_ = have_I_right(request, blog_id)

    posts = Post.objects.filter(blog=b)

    if 'page' in request.GET:
        cur_page = int(request.GET['page'])
    else:
        cur_page = request.session.get('cur_page',0)

    if cur_page <= 0:
        drafts = Draft.objects.filter(blog=b).order_by('-creation_date')
    else:
        drafts = []

    count = len(posts) - len(drafts)
    nb_pages = int(count/50)

    # Prevent error injection
    if cur_page < 0 : cur_page = 0
    if cur_page > nb_pages : cur_page = nb_pages-1

    request.session['cur_page'] = cur_page

    start = cur_page * 50
    end = start + 50 + len(drafts)

    posts = posts.order_by('-creation_date')[start:end]

    form = BlogForm(instance=b)
    
    comments = Comment.objects.all()
    dict_comments = {}
    for comment in comments:
        key = comment.post.id
        dict_comments[key] = dict_comments.get(key, 0) + 1

    navigation_bar = createNavigationBar(b.id, cur_page, nb_pages)

    c = {'blog' : b, 'posts' : posts, 'drafts' : drafts, 'form' : form, 'comments' : dict_comments, 'navigation_bar' : navigation_bar}

    return render(request, 'view_blog.html', c)

@login_required
def edit_blog(request, blog_id):
    if not request.user.is_superuser:
        return HttpResponseRedirect('/blog/' + str(blog_id))

    b = Blog.objects.get(pk=blog_id)

    if b is None:
        raise Http404

    edited = False

    if request.method == 'POST':
        if 'edit' in request.POST:
            form = BlogForm(request.POST, instance=b)
            if form.is_valid():
                form.save()
                edited = True
        else:
            if 'delete' in request.POST:
                b = Blog.objects.get(pk=blog_id)
                b.delete()
                return HttpResponseRedirect('/blog')
    else:
        form = BlogForm(instance=b)

    posts = Post.objects.filter(blog=b).order_by('-creation_date')

    c = {'blog' : b, 'posts' : posts, 'form' : form, 'edited' : edited}

    return render(request, 'view_blog.html', c)

@login_required
def search_blog(request, blog_id):
    from dynastie.generators import search
    b,_ = have_I_right(request, blog_id)

    text = request.POST['text']

    if text is None or text == '':
        return HttpResponseRedirect('/blog')

    s = Search()
    post_list = s.search(b, text)

    posts = []
    if not post_list is None:
        post_list = post_list[:50]
        for post_id in post_list:
            try:
                post = Post.objects.get(pk=post_id)
            except:
                continue
            if not post is None:
                posts.append(post)

    comments = Comment.objects.all()
    dict_comments = {}
    for comment in comments:
        key = comment.post.id
        dict_comments[key] = dict_comments.get(key, 0) + 1

    c = {'blog' : b, 'posts' : posts, 'comments' : dict_comments}

    return render(request, 'search_blog.html', c)

@login_required
def add_post(request, blog_id):
    (b,_) = have_I_right(request, blog_id)

    if request.method == 'POST':
        if 'add' in request.POST:
            content_format = Post.CONTENT_HTML
            if request.POST['editor'] == 'text':
                content_format = Post.CONTENT_TEXT
            post = Post(blog=Blog.objects.get(pk=blog_id), author=User.objects.get(pk=request.user.id), creation_date=datetime.now(), modification_date=datetime.now(), content_format=content_format)
            content = request.POST['content']
            # del request.POST['content']
            form = PostForm(request.POST, instance=post)
            if form.is_valid():
                form = form.save()
                form.createPost(content, request.POST['text_tags'])
                s = Search()
                s.index_post(b, form.id)
                request.session['cur_page'] = 0
                return HttpResponseRedirect('/blog/' + blog_id)
        
        elif 'draft' in request.POST:
            content_format = Post.CONTENT_HTML
            if request.POST['editor'] == 'text':
                content_format = Post.CONTENT_TEXT
            draft = Draft(blog=Blog.objects.get(pk=blog_id), author=User.objects.get(pk=request.user.id), creation_date=datetime.now(), modification_date=datetime.now(), content_format=content_format, published=False)
            content = request.POST['content']
            # del request.POST['content']
            form = DraftForm(request.POST, instance=draft)
            if form.is_valid():
                form = form.save()
                form.createDraft(content, request.POST['text_tags'])
                request.session['cur_page'] = 0
                return HttpResponseRedirect('/blog/' + blog_id)
        else:
            return HttpResponseRedirect('/blog/' + blog_id)
    else:
        form = PostForm()

    return render(request, 'add_post.html', {
            'form': form, 'blog_id' : blog_id,
            'all_tags' : Tag.objects.all().order_by('name'),
            'editor' : 'html'
            })

@login_required
def edit_post(request, post_id):
    (b, post) = have_I_right(request, None, post_id)

    title = post.title
    blog_id = b.id

    if request.method == 'POST':
        if 'edit' in request.POST:
            content_format = Post.CONTENT_HTML
            if request.POST['editor'] == 'text':
                content_format = Post.CONTENT_TEXT
            post.content_format = content_format
            form = PostForm(request.POST, instance=post)
            if form.is_valid():
                if title != request.POST['title']:
                    post.remove()
                form.save()
                post.createPost(request.POST['content'], request.POST['text_tags'])
                s = Search()
                s.edit_post(b, post_id)
                return HttpResponseRedirect('/blog/' + str(blog_id))
        else:
            if 'cancel' in request.POST:
                return HttpResponseRedirect('/blog/' + str(blog_id))
    else:
        form = PostForm(instance=post, initial={'text_tags':', '.join((tag.name) for tag in post.tags.all().order_by('name'))})

    filename = b.src_path + '/_post/' + str(post.pk)
    if os.path.exists(filename):
        f = open(filename, 'rb')
        content = f.read().decode('utf-8')
        f.close()
    else:
        content = 'Empty post'

    comments = Comment.objects.filter(post=post).order_by('date')
    comment_list = [comment for comment in comments]

    return render(request, 'edit_post.html', {
            'form': form, 'post_id' : post_id, 'content' : content,
            'blog_id' : blog_id, 'comments' : comment_list,
            'all_tags' : Tag.objects.all().order_by('name'),
            'editor' : post.get_editor()
            })

@login_required
def edit_draft(request, draft_id):
    (b, draft) = have_I_right(request, None, draft_id, cls=Draft)

    title = draft.title
    blog_id = b.id

    if request.method == 'POST':
        if 'edit' in request.POST:
            content_format = Post.CONTENT_HTML
            if request.POST['editor'] == 'text':
                content_format = Post.CONTENT_TEXT
            draft.content_format = content_format
            form = DraftForm(request.POST, instance=draft)
            if form.is_valid():
                if title != request.POST['title']:
                    draft.remove()
                form.save()
                draft.createDraft(request.POST['content'], request.POST['text_tags'])
                return HttpResponseRedirect('/blog/' + str(blog_id))
        elif 'post' in request.POST:
            content_format = Post.CONTENT_HTML
            if request.POST['editor'] == 'text':
                content_format = Post.CONTENT_TEXT
            post = Post(blog=Blog.objects.get(pk=blog_id), author=User.objects.get(pk=request.user.id), creation_date=datetime.now(), modification_date=datetime.now(), content_format=content_format)
            content = request.POST['content']
            # del request.POST['content']
            form = PostForm(request.POST, instance=post)
            if form.is_valid():
                draft.delete()
                form = form.save()
                form.createPost(content, request.POST['text_tags'])
                s = Search()
                s.index_post(b, form.id)
                request.session['cur_page'] = 0
                return HttpResponseRedirect('/blog/' + str(blog_id))
        else:
            if 'cancel' in request.POST:
                return HttpResponseRedirect('/blog/' + str(blog_id))
    else:
        form = PostForm(instance=draft, initial={'text_tags':', '.join((tag.name) for tag in draft.tags.all().order_by('name'))})

    filename = b.src_path + '/_draft/' + str(draft.pk)
    if os.path.exists(filename):
        f = open(filename, 'rb')
        content = f.read().decode('utf-8')
        f.close()
    else:
        content = 'Empty draft'

    return render(request, 'edit_draft.html', {
            'form': form, 'draft_id' : draft_id, 'content' : content,
            'blog_id' : blog_id,
            'all_tags' : Tag.objects.all().order_by('name'),
            'editor' : draft.get_editor()
            })

@login_required
def delete_post(request, post_id):
    (b, post) = have_I_right(request, None, post_id)

    s = Search()
    s.delete_post(b, post_id)

    post.delete()

    return HttpResponseRedirect('/blog/' + str(b.id))

@login_required
def delete_draft(request, draft_id):
    (b, draft) = have_I_right(request, None, draft_id, cls=Draft)

    draft.delete()

    return HttpResponseRedirect('/blog/' + str(b.id))

def _generate(request, blog_id, report):
    b,_ = have_I_right(request, blog_id)

    posts = Post.objects.filter(blog=b).order_by('-creation_date')
    nb_pages = int(len(posts)/50)
    posts = posts[0:50]
    b = Blog.objects.get(pk=blog_id)
    form = BlogForm(instance=b)
    
    comments = Comment.objects.all()
    dict_comments = {}
    for comment in comments:
        key = comment.post.id
        dict_comments[key] = dict_comments.get(key, 0) + 1

    navigation_bar = createNavigationBar(b.id, 0, nb_pages)

    c = {'blog' : b, 'posts' : posts, 'form' : form, 'report': report, 'comments' : dict_comments, 'navigation_bar' : navigation_bar}
    
    return render(request, 'generate.html', c)

@login_required
def generate(request, blog_id):
    b,_ = have_I_right(request, blog_id)

    report = b.generate(request)

    return _generate(request, blog_id, report)

@login_required
def generate_post(request, blog_id, post_id):
    b,post = have_I_right(request, blog_id, post_id)

    report = b.generate_post(request, post)

    return _generate(request, blog_id, report)

@login_required
def generate_search(request, blog_id):
    b,_ = have_I_right(request, blog_id)

    hash_posts = {}
    hash_posts_content = {}
    s = Search(hash_posts, hash_posts_content)

    report = s.create_index(b)

    return _generate(request, blog_id, report)

@csrf_exempt
def search(request, blog_id):
    from dynastie.generators import search

    if not 'HTTP_REFERER' in request.META:
        return HttpResponseForbidden()

    ref = request.META['HTTP_REFERER']

    b = Blog.objects.filter(pk=blog_id)

    if len(b) == 0:
        return HttpResponseRedirect(ref)

    b = b[0]

    if 'text' in request.POST:
        text = request.POST['text']
    else:
        return HttpResponseRedirect(ref)
    
    s = Search()
    post_list = s.search(b, text)

    if post_list is None: post_list = []

    hash_posts = {}
    hash_posts_content = {}
    s = search.Search(hash_posts, hash_posts_content)
    
    res = s.generate(b, b.src_path, b.output_path, post_list)

    c = {'result' : res}

    # Simple wrapper to HTML content
    return render(request, 'search.html', c)

@login_required
def preview(request, blog_id):
    from dynastie.generators import post

    (b, p) = have_I_right(request, blog_id)

    content = request.POST['content']
    if request.POST['editor'] == 'text':
        from dynastie.generators import markdown2
        content = markdown2.markdown(content, extras=['fenced-code-blocks'])

    values = {'title' : request.POST['title'], \
                  'author' : request.user.first_name + ' ' + request.user.last_name, \
                  'content' : content
              }

    engine = globals()['post']

    for name, obj in inspect.getmembers(engine):
        if inspect.isclass(obj) and obj.__module__.startswith("dynastie.generators") \
                and obj.__module__.endswith("post"):
            e = obj()
            content = e.preview(request, b.src_path, values)
            break

    output = b.output_path
    path = output + '/preview.html'
    if os.path.exists(path):
        os.unlink(path)

    f = open(path, 'wb')
    f.write(content.encode('utf-8'))
    f.close()

    c = {'content' : content}

    return HttpResponseRedirect('http://' + b.name + '/preview.html')
# return HttpResponseRedirect('http://' + 'localhost:8080' + '/preview.html')

def _tinymcelist(request, b, year, month):
    ret = 'var tinyMCEImageList = new Array('

    if month < 10:
        suffix = '/images/' + str(year) + '/0' + str(month)
    else:
        suffix = '/images/' + str(year) + '/' + str(month)

    path = b.src_path + '/' + suffix
    url = 'http://' + b.name + suffix + '/'

    if os.path.exists(path):
        files = ''
        for p in os.listdir(path):
            files += '["' + p + '", "' + url + p + '"],'
        # Remove last comma
        if len(files) != 0:
            ret += files[:-1]

    ret += ');'

    return ret

@login_required
def tinymcelist_add(request, blog_id):
    now = datetime.now()
    year = now.year
    month = now.month

    try:
        (b, p) = have_I_right(request, blog_id)
    except Http404:
        return HttpResponse('', content_type='application/x-javascript')

    ret = _tinymcelist(request, b, year, month)

    return HttpResponse(ret, content_type='application/x-javascript')

@login_required
def tinymcelist_edit(request, post_id):
    try:
        (b, post) = have_I_right(request, None, post_id)
    except Http404:
        return HttpResponse('', content_type='application/x-javascript')

    year = post.creation_date.year
    month = post.creation_date.month

    ret = _tinymcelist(request, b, year, month)

    return HttpResponse(ret, content_type='application/x-javascript')

@csrf_exempt
def add_comment(request, post_id, parent_id):
    from dynastie.generators import post

    if not 'HTTP_REFERER' in request.META:
        ref = "/"
    else:
        ref = request.META['HTTP_REFERER']

    # Anti robot !!
    if not 'email' in request.POST or request.POST['email'] != '':
        if 'HTTP_X_REAL_IP' in request.META:
            print('Dynastie : fucking robot %s' % (request.META['HTTP_X_REAL_IP']))
        else:
            print('Dynastie : fucking robot %s' % (request.META['REMOTE_ADDR']))
        return HttpResponseRedirect(ref)

    post = Post.objects.get(pk=post_id)
    if post is None:
        return HttpResponseRedirect(ref)

    blog = Blog.objects.get(pk=post.blog_id)

    if blog is None:
        return HttpResponseRedirect(ref)

    parent_id = int(parent_id)
    if parent_id != 0:
        parentComment = Comment.objects.get(pk=parent_id)
    else:
        parentComment = None

    if request.POST['author'] == '' or request.POST['the_comment'] == '':
        return HttpResponseRedirect(ref)

    # Behind nginx proxy
    if 'HTTP_X_FORWARDED_FOR' in request.META:
        ip = request.META['HTTP_X_FORWARDED_FOR']
    else:
        ip = request.META['REMOTE_ADDR']

    # Avoid script injection
    the_comment = request.POST['the_comment'].strip()
    the_comment = the_comment.replace('<', '&lt;')
    the_comment = the_comment.replace('>', '&gt;')
    the_comment = the_comment.replace('\n', '<br />')
    the_comment = re.sub('#([0-9]+)', '<a href=\"#comment_\\1\">#\\1</a>', the_comment)

    if 'mel' in request.POST:
        mel = request.POST['mel'].strip()
    else:
        mel = ''

    comment = Comment(post=post, parent=parentComment, date=datetime.now(), author=request.POST['author'].strip(),\
                          email=mel, the_comment=the_comment, ip=ip)
    comment.save()

    engine = globals()['post']

    post_list = [post]
    hash_post = {}
    hash_post_content = {}
    for name, obj in inspect.getmembers(engine):
        if inspect.isclass(obj) and obj.__module__.startswith("dynastie.generators") \
                and obj.__module__.endswith("post"):
            e = obj(hash_post, hash_post_content)
            content = e._generate(blog, blog.src_path, blog.output_path, post_list)
            break

    # Send emails
    emails = {}
    comments = Comment.objects.filter(post=post).order_by('date')
    comment_index = str(len(comments))
    for comment in comments:
        email = comment.email
        if email != '' and email != request.POST['mel'] and not email in emails:
            emails[email] = comment.author


    if post.author.email not in emails:
        emails[post.author.email] = post.author.first_name

    if len(emails) > 0:
        connection = mail.get_connection(fail_silently=True)
        connection.open()
        
        messages = []
        subject = '[%s] Nouveau commentaire pour l\'article "%s"' % (blog.name, post.title)

        for email,author in emails.items():
            text_body = u'Bonjour %s,\n\nUn nouveau commentaire a été posté pour l\'article "%s".\n\n' % (author, post.title)
            text_body += u'Pour le consulter, rendez vous sur http://%s%s#comment_%s\n\n----------------\n\n'  % (blog.name, post.getPath(), comment_index)
            text_body += the_comment
            text_body += '\n'

            html_body = u'<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8" /></head><body>'
            html_body += u'Bonjour %s,<br/><br/>Un nouveau commentaire a été posté pour l\'article "%s".<br/><br/>' % (author, post.title)
            html_body = html_body + u'Pour le consulter, rendez vous sur <a href="http://%s%s#comment_%s">http://%s%s#comment_%s</a><br/><br/>----------------<br/><pre>'  % (blog.name, post.getPath(), comment_index, blog.name, post.getPath(), comment_index)
            c = comment.the_comment
            html_body += the_comment + '</pre>'
            html_body += '</body></html>'

            msg = EmailMultiAlternatives(subject, text_body, 'no-reply@%s' % blog.name , [email])
            msg.attach_alternative(html_body, "text/html")
            messages.append(msg)

        connection.send_messages(messages)
        connection.close()

    ref = ref + '#comment_%s' % (comment_index)
    response = HttpResponseRedirect(ref)
    response['Cache-Control'] = 'no-store, no-cache, must-revalidate'
    response['Expires'] = 'Thu, 01 Jan 1970 00:00:00 GMT'

    # This cause problems with non-ascii characters, disabled until Python 3.
    #  response.set_cookie('author', to_unicode(request.POST['author']), domain=blog.name, secure=True, httponly=False);
    # if mel != '':
    #     response.set_cookie('email', mel, 'utf-8', domain=blog.name, secure=True, httponly=False);

    return response
    
    

@login_required
def edit_comment(request, comment_id):
    comment = Comment.objects.get(pk=comment_id)

    if comment is None:
        return Http404

    (b, post) = have_I_right(request, None, comment.post_id)
    post_id = comment.post_id

    if request.method == 'POST':
        if 'edit' in request.POST:
            form = CommentForm(request.POST, instance=comment)
            if form.is_valid():
                form = form.save()
                return HttpResponseRedirect('/post/edit/' + str(post_id))
        else:
            return HttpResponseRedirect('/post/edit/' + str(post_id))
    else:
        comment._remove_br()
        form = CommentForm(instance=comment)

    return render(request, 'edit_comment.html', {'form': form, 'comment':comment})

@login_required
def delete_comment(request, comment_id):
    comment = Comment.objects.get(pk=comment_id)
    if comment is None:
        return Http404

    (b, post) = have_I_right(request, None, comment.post_id)
    post_id = comment.post_id
    
    childs = Comment.objects.filter(parent=comment.id)

    try:
        parent = comment.parent
    except:
        parent = None

    for child in childs:
        child.parent = parent
        child.save()

    comment.delete()

    return HttpResponseRedirect('/post/edit/' + str(post_id))