Update thread by time, not post id. This will help with getting updated posts

boards/static/js/thread.js

@@ -1,80 +1,81 b''
 /*
  @licstart  The following is the entire license notice for the
  JavaScript code in this page.
 
 
  Copyright (C) 2013  neko259
 
  The JavaScript code in this page is free software: you can
  redistribute it and/or modify it under the terms of the GNU
  General Public License (GNU GPL) as published by the Free Software
  Foundation, either version 3 of the License, or (at your option)
  any later version.  The code is distributed WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS
  FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
 
  As additional permission under GNU GPL version 3 section 7, you
  may distribute non-source (e.g., minimized or compacted) forms of
  that code without the copy of the GNU GPL normally required by
  section 4, provided you include this license notice and a URL
  through which recipients can access the Corresponding Source.
 
  @licend  The above is the entire license notice
  for the JavaScript code in this page.
  */
 
 function addGalleryPanel() {
     var gallery = $('a[class="thumb"]').clone(true),
         normal = $('.post').clone(true);
 
     $('.navigation_panel').filter(':first').after(
         '<div class="image-mode-tab" role="radiogroup" aria-label="Image mode2">' +
         '<label><input type="radio" class="image-mode-normal" name="image-mode" value="0" checked="checked"/>'+ gettext('Normal') +'</label>' +
         '<label><input type="radio" class="image-mode-table" name="image-mode" value="1"/>'+ gettext('Gallery') +'</label>' +
         '</div>'
     );
 
     $('input[name="image-mode"]').change(function() {
         //gallery mode
         if($(this).val() === '1') {
             $('.thread').replaceWith(
                 $('<div id="posts-table"></div>').append(gallery)
             );
         }
         //normal mode
         else {
             $('#posts-table').replaceWith(
                 $('<div class="thread"></div>').append(normal)
             );
         }
     });
 }
 
 function moveCaretToEnd(el) {
         if (typeof el.selectionStart == "number") {
             el.selectionStart = el.selectionEnd = el.value.length;
         } else if (typeof el.createTextRange != "undefined") {
             el.focus();
             var range = el.createTextRange();
             range.collapse(false);
             range.select();
         }
 }
 
 function addQuickReply(postId) {
     var textToAdd = '>>' + postId + '\n\n';
     var textAreaId = '#id_text';
     $(textAreaId).val($(textAreaId).val()+ textToAdd);
 
     var textarea = document.getElementById('id_text');
     $(textAreaId).focus();
     moveCaretToEnd(textarea);
 
     $("html, body").animate({ scrollTop: $(textAreaId).offset().top }, "slow");
 }
 
 
 
 $(document).ready(function(){
     addGalleryPanel();
+    initAutoupdate();
 });

boards/static/js/thread_update.js

@@ -1,37 +1,63 b''
 var THREAD_UPDATE_DELAY = 10000;
 
 var loading = false;
+var lastUpdateTime = null;
+
+function blink(node) {
+    var blinkCount = 2;
+    var blinkDelay = 250;
+
+    var nodeToAnimate = node;
+    for (var i = 0; i < blinkCount; i++) {
+        nodeToAnimate = nodeToAnimate.fadeOut(blinkDelay).fadeIn(blinkDelay);
+    }
+}
 
 function updateThread() {
     if (loading) {
         return;
     }
 
     loading = true;
 
     var threadPosts = $('div.thread').children('.post');
 
     var lastPost = threadPosts.last();
     var threadId = threadPosts.first().attr('id');
-    var lastPostId = lastPost.attr('id');
 
-    var diffUrl = '/api/diff_thread/' + threadId + '/' + lastPostId + '/';
+    var diffUrl = '/api/diff_thread/' + threadId + '/' + lastUpdateTime + '/';
     $.getJSON(diffUrl)
         .success(function(data) {
             var addedPosts = data.added;
 
             for (var i = 0; i < addedPosts.length; i++) {
                 var postText = addedPosts[i];
 
-                var post = $(postText).hide();
-                post.appendTo(lastPost.parent()).show('slow');
+                var post = $(postText);
+                post.appendTo(lastPost.parent());
                 addRefLinkPreview(post[0]);
 
                 lastPost = post;
+                blink(post);
+
             }
 
+            // TODO Process updated and deleted posts
+
+            lastUpdateTime = data.last_update;
+            loading = false;
+        })
+        .error(function(data) {
+            // TODO Show error message that server is unavailable?
+
             loading = false;
         });
 }
 
+function initAutoupdate() {
+    loading = false;
+
+    lastUpdateTime = $('.metapanel').attr('data-last-update');
+
 setInterval(updateThread, THREAD_UPDATE_DELAY);
+}

boards/templates/boards/thread.html

@@ -1,164 +1,164 b''
 {% extends "boards/base.html" %}
 
 {% load i18n %}
 {% load markup %}
 {% load cache %}
 {% load static from staticfiles %}
 {% load board %}
 
 {% block head %}
     <title>Neboard - {{ posts.0.get_title }}</title>
 {% endblock %}
 
 {% block content %}
     {% get_current_language as LANGUAGE_CODE %}
 
     <script src="{% static 'js/thread_update.js' %}"></script>
     <script src="{% static 'js/thread.js' %}"></script>
 
     {% if posts %}
         {% cache 600 thread_view posts.0.last_edit_time moderator LANGUAGE_CODE %}
             {% if bumpable %}
                 <div class="bar-bg">
                     <div class="bar-value" style="width:{{ bumplimit_progress }}%">
                     </div>
                     <div class="bar-text">
                         {{ posts_left }} {% trans 'posts to bumplimit' %}
                     </div>
                 </div>
             {% endif %}
         <div class="thread">
         {% for post in posts %}
             {% if bumpable %}
                 <div class="post" id="{{ post.id }}">
             {% else %}
                 <div class="post dead_post" id="{{ post.id }}">
             {% endif %}
             {% if post.image %}
                 <div class="image">
                     <a
                             class="thumb"
                             href="{{ post.image.url }}"><img
                             src="{{ post.image.url_200x150 }}"
                             alt="{{ post.id }}"
                             data-width="{{ post.image_width }}"
                             data-height="{{ post.image_height }}"/>
                     </a>
                 </div>
             {% endif %}
             <div class="message">
                 <div class="post-info">
                     <span class="title">{{ post.title }}</span>
                     <a class="post_id" href="#{{ post.id }}">
                         ({{ post.id }})</a>
                     [{{ post.pub_time }}]
                 [<a href="#" onclick="javascript:addQuickReply('{{ post.id }}')
                     ; return false;">&gt;&gt;</a>]
 
                     {% if moderator %}
                         <span class="moderator_info">
                             [<a href="{% url 'delete' post_id=post.id %}"
                                 >{% trans 'Delete' %}</a>]
                             ({{ post.poster_ip }})
                             [<a href="{% url 'ban' post_id=post.id %}?next={{ request.path }}"
                                 >{% trans 'Ban IP' %}</a>]
                         </span>
                     {% endif %}
                 </div>
                 {% autoescape off %}
                 {{ post.text.rendered }}
                 {% endautoescape %}
         {% if post.is_referenced %}
             <div class="refmap">
             {% trans "Replies" %}:
             {% for ref_post in post.get_sorted_referenced_posts %}
             <a href="{% post_url ref_post.id %}">&gt;&gt;{{ ref_post.id }}</a
                     >{% if not forloop.last %},{% endif %}
             {% endfor %}
             </div>
         {% endif %}
             </div>
             {% if forloop.first %}
                 <div class="metadata">
                     <span class="tags">
                         {% for tag in post.get_tags %}
                             <a class="tag" href="{% url 'tag' tag.name %}">
                                 #{{ tag.name }}</a
                                     >{% if not forloop.last %},{% endif %}
                         {% endfor %}
                     </span>
                 </div>
             {% endif %}
             </div>
         {% endfor %}
         </div>
         {% endcache %}
     {% endif %}
 
     <form id="form" enctype="multipart/form-data" method="post"
             >{% csrf_token %}
         <div class="post-form-w">
         <div class="form-title">{% trans "Reply to thread" %} #{{ posts.0.id }}</div>
             <div class="post-form">
                 <div class="form-row">
                     <div class="form-label">{% trans 'Title' %}</div>
                     <div class="form-input">{{ form.title }}</div>
                     <div class="form-errors">{{ form.title.errors }}</div>
                 </div>
                 <div class="form-row">
                     <div class="form-label">{% trans 'Formatting' %}</div>
                     <div class="form-input" id="mark_panel">
                         <span class="mark_btn" id="quote"><span class="quote">&gt;{% trans 'quote' %}</span></span>
                         <span class="mark_btn" id="italic"><i>{% trans 'italic' %}</i></span>
                         <span class="mark_btn" id="bold"><b>{% trans 'bold' %}</b></span>
                         <span class="mark_btn" id="spoiler"><span class="spoiler">{% trans 'spoiler' %}</span></span>
                         <span class="mark_btn" id="comment"><span class="comment">// {% trans 'comment' %}</span></span>
                     </div>
                 </div>
                 <div class="form-row">
                     <div class="form-label">{% trans 'Text' %}</div>
                     <div class="form-input">{{ form.text }}</div>
                     <div class="form-errors">{{ form.text.errors }}</div>
                 </div>
                 <div class="form-row">
                     <div class="form-label">{% trans 'Image' %}</div>
                     <div class="form-input">{{ form.image }}</div>
                     <div class="form-errors">{{ form.image.errors }}</div>
                 </div>
                 <div class="form-row form-email">
                     <div class="form-label">{% trans 'e-mail' %}</div>
                     <div class="form-input">{{ form.email }}</div>
                     <div class="form-errors">{{ form.email.errors }}</div>
                 </div>
                 <div class="form-row">
                     {{ form.captcha }}
                     <div class="form-errors">{{ form.captcha.errors }}</div>
                 </div>
                 <div class="form-row">
                     <div class="form-errors">{{ form.other.errors }}</div>
                 </div>
             </div>
 
             <div class="form-submit"><input type="submit"
                                             value="{% trans "Post" %}"/></div>
             <div><a href="{% url "staticpage" name="help" %}">
                 {% trans 'Text syntax' %}</a></div>
         </div>
     </form>
 
 {% endblock %}
 
 {% block metapanel %}
 
     {% get_current_language as LANGUAGE_CODE %}
 
-    <span class="metapanel">
+    <span class="metapanel" data-last-update="{{ last_update }}">
         {% cache 600 thread_meta posts.0.last_edit_time moderator LANGUAGE_CODE %}
             {{ posts.0.get_reply_count }} {% trans 'replies' %},
             {{ posts.0.get_images_count }} {% trans 'images' %}.
             {% trans 'Last update: ' %}{{ posts.0.last_edit_time }}
             [<a href="rss/">RSS</a>]
         {% endcache %}
     </span>
 
 {% endblock %}

boards/urls.py

@@ -1,58 +1,58 b''
 from django.conf.urls import patterns, url, include
 from boards import views
 from boards.rss import AllThreadsFeed, TagThreadsFeed, ThreadPostsFeed
 
 js_info_dict = {
     'packages': ('boards',),
 }
 
 urlpatterns = patterns('',
 
     # /boards/
     url(r'^$', views.index, name='index'),
     # /boards/page/
     url(r'^page/(?P<page>\w+)/$', views.index, name='index'),
 
     # login page
     url(r'^login/$', views.login, name='login'),
 
     # /boards/tag/tag_name/
     url(r'^tag/(?P<tag_name>\w+)/$', views.tag, name='tag'),
     # /boards/tag/tag_id/page/
     url(r'^tag/(?P<tag_name>\w+)/page/(?P<page>\w+)/$', views.tag, name='tag'),
 
     # /boards/tag/tag_name/unsubscribe/
     url(r'^tag/(?P<tag_name>\w+)/subscribe/$', views.tag_subscribe,
         name='tag_subscribe'),
     # /boards/tag/tag_name/unsubscribe/
     url(r'^tag/(?P<tag_name>\w+)/unsubscribe/$', views.tag_unsubscribe,
         name='tag_unsubscribe'),
 
     # /boards/thread/
     url(r'^thread/(?P<post_id>\w+)/$', views.thread, name='thread'),
     url(r'^settings/$', views.settings, name='settings'),
     url(r'^tags/$', views.all_tags, name='tags'),
     url(r'^captcha/', include('captcha.urls')),
     url(r'^jump/(?P<post_id>\w+)/$', views.jump_to_post, name='jumper'),
     url(r'^authors/$', views.authors, name='authors'),
     url(r'^delete/(?P<post_id>\w+)/$', views.delete, name='delete'),
     url(r'^ban/(?P<post_id>\w+)/$', views.ban, name='ban'),
 
     url(r'^banned/$', views.you_are_banned, name='banned'),
     url(r'^staticpage/(?P<name>\w+)/$', views.static_page, name='staticpage'),
 
     # RSS feeds
     url(r'^rss/$', AllThreadsFeed()),
     url(r'^page/(?P<page>\w+)/rss/$', AllThreadsFeed()),
     url(r'^tag/(?P<tag_name>\w+)/rss/$', TagThreadsFeed()),
     url(r'^tag/(?P<tag_name>\w+)/page/(?P<page>\w+)/rss/$', TagThreadsFeed()),
     url(r'^thread/(?P<post_id>\w+)/rss/$', ThreadPostsFeed()),
 
     # i18n
     url(r'^jsi18n/$', 'django.views.i18n.javascript_catalog', js_info_dict),
 
     # API
     url(r'^api/post/(?P<post_id>\w+)/$', views.get_post, name="get_post"),
-    url(r'^api/diff_thread/(?P<thread_id>\w+)/(?P<last_post_id>\w+)/$',
+    url(r'^api/diff_thread/(?P<thread_id>\w+)/(?P<last_update_time>\w+)/$',
         views.api_get_threaddiff, name="get_thread_diff"),
 )

boards/views.py

@@ -1,536 +1,544 b''
 import hashlib
 import json
 import string
+import time
+
+from datetime import datetime
+
 from django.core import serializers
 from django.core.urlresolvers import reverse
 from django.http import HttpResponseRedirect
 from django.http.response import HttpResponse
 from django.template import RequestContext
 from django.shortcuts import render, redirect, get_object_or_404
 from django.utils import timezone
 from django.db import transaction
 
 from boards import forms
 import boards
 from boards import utils
 from boards.forms import ThreadForm, PostForm, SettingsForm, PlainErrorList, \
     ThreadCaptchaForm, PostCaptchaForm, LoginForm, ModeratorSettingsForm
 
 from boards.models import Post, Tag, Ban, User, RANK_USER, SETTING_MODERATE, \
     REGEX_REPLY
 from boards import authors
 from boards.utils import get_client_ip
 import neboard
 import re
 
 BAN_REASON_SPAM = 'Autoban: spam bot'
 
 
 def index(request, page=0):
     context = _init_default_context(request)
 
     if utils.need_include_captcha(request):
         threadFormClass = ThreadCaptchaForm
         kwargs = {'request': request}
     else:
         threadFormClass = ThreadForm
         kwargs = {}
 
     if request.method == 'POST':
         form = threadFormClass(request.POST, request.FILES,
                                error_class=PlainErrorList, **kwargs)
         form.session = request.session
 
         if form.is_valid():
             return _new_post(request, form)
         if form.need_to_ban:
             # Ban user because he is suspected to be a bot
             _ban_current_user(request)
     else:
         form = threadFormClass(error_class=PlainErrorList, **kwargs)
 
     threads = []
     for thread in Post.objects.get_threads(page=int(page)):
         threads.append({
             'thread': thread,
             'bumpable': thread.can_bump(),
             'last_replies': thread.get_last_replies(),
         })
 
     # TODO Make this generic for tag and threads list pages
     context['threads'] = None if len(threads) == 0 else threads
     context['form'] = form
 
     page_count = Post.objects.get_thread_page_count()
     context['pages'] = range(page_count)
     page = int(page)
     if page < page_count - 1:
         context['next_page'] = str(page + 1)
     if page > 0:
         context['prev_page'] = str(page - 1)
 
     return render(request, 'boards/posting_general.html',
                   context)
 
 
 @transaction.commit_on_success
 def _new_post(request, form, thread_id=boards.models.NO_PARENT):
     """Add a new post (in thread or as a reply)."""
 
     ip = get_client_ip(request)
     is_banned = Ban.objects.filter(ip=ip).exists()
 
     if is_banned:
         return redirect(you_are_banned)
 
     data = form.cleaned_data
 
     title = data['title']
     text = data['text']
 
     text = _remove_invalid_links(text)
 
     if 'image' in data.keys():
         image = data['image']
     else:
         image = None
 
     tags = []
 
     new_thread = thread_id == boards.models.NO_PARENT
     if new_thread:
         tag_strings = data['tags']
 
         if tag_strings:
             tag_strings = tag_strings.split(' ')
             for tag_name in tag_strings:
                 tag_name = string.lower(tag_name.strip())
                 if len(tag_name) > 0:
                     tag, created = Tag.objects.get_or_create(name=tag_name)
                     tags.append(tag)
 
                     linked_tags = tag.get_linked_tags()
                     if len(linked_tags) > 0:
                         tags.extend(linked_tags)
 
     op = None if thread_id == boards.models.NO_PARENT else \
         get_object_or_404(Post, id=thread_id)
     post = Post.objects.create_post(title=title, text=text, ip=ip,
                                     thread=op, image=image,
                                     tags=tags, user=_get_user(request))
 
     thread_to_show = (post.id if new_thread else thread_id)
 
     if new_thread:
         return redirect(thread, post_id=thread_to_show)
     else:
         return redirect(reverse(thread, kwargs={'post_id': thread_to_show}) +
                         '#' + str(post.id))
 
 
 def tag(request, tag_name, page=0):
     """
     Get all tag threads. Threads are split in pages, so some page is
     requested. Default page is 0.
     """
 
     tag = get_object_or_404(Tag, name=tag_name)
     threads = []
     for thread in Post.objects.get_threads(tag=tag, page=int(page)):
         threads.append({
             'thread': thread,
             'bumpable': thread.can_bump(),
             'last_replies': thread.get_last_replies(),
         })
 
     if request.method == 'POST':
         form = ThreadForm(request.POST, request.FILES,
                           error_class=PlainErrorList)
         form.session = request.session
 
         if form.is_valid():
             return _new_post(request, form)
         if form.need_to_ban:
             # Ban user because he is suspected to be a bot
             _ban_current_user(request)
     else:
         form = forms.ThreadForm(initial={'tags': tag_name},
                                 error_class=PlainErrorList)
 
     context = _init_default_context(request)
     context['threads'] = None if len(threads) == 0 else threads
     context['tag'] = tag
 
     page_count = Post.objects.get_thread_page_count(tag=tag)
     context['pages'] = range(page_count)
     page = int(page)
     if page < page_count - 1:
         context['next_page'] = str(page + 1)
     if page > 0:
         context['prev_page'] = str(page - 1)
 
     context['form'] = form
 
     return render(request, 'boards/posting_general.html',
                   context)
 
 
 def thread(request, post_id):
     """Get all thread posts"""
 
     if utils.need_include_captcha(request):
         postFormClass = PostCaptchaForm
         kwargs = {'request': request}
     else:
         postFormClass = PostForm
         kwargs = {}
 
     if request.method == 'POST':
         form = postFormClass(request.POST, request.FILES,
                              error_class=PlainErrorList, **kwargs)
         form.session = request.session
 
         if form.is_valid():
             return _new_post(request, form, post_id)
         if form.need_to_ban:
             # Ban user because he is suspected to be a bot
             _ban_current_user(request)
     else:
         form = postFormClass(error_class=PlainErrorList, **kwargs)
 
     posts = Post.objects.get_thread(post_id)
 
     context = _init_default_context(request)
 
     context['posts'] = posts
     context['form'] = form
     context['bumpable'] = posts[0].can_bump()
     if context['bumpable']:
         context['posts_left'] = neboard.settings.MAX_POSTS_PER_THREAD - len(
             posts)
         context['bumplimit_progress'] = str(
             float(context['posts_left']) /
             neboard.settings.MAX_POSTS_PER_THREAD * 100)
+    context["last_update"] = int(time.time() * 1000)
 
     return render(request, 'boards/thread.html', context)
 
 
 def login(request):
     """Log in with user id"""
 
     context = _init_default_context(request)
 
     if request.method == 'POST':
         form = LoginForm(request.POST, request.FILES,
                          error_class=PlainErrorList)
         form.session = request.session
 
         if form.is_valid():
             user = User.objects.get(user_id=form.cleaned_data['user_id'])
             request.session['user_id'] = user.id
             return redirect(index)
 
     else:
         form = LoginForm()
 
     context['form'] = form
 
     return render(request, 'boards/login.html', context)
 
 
 def settings(request):
     """User's settings"""
 
     context = _init_default_context(request)
     user = _get_user(request)
     is_moderator = user.is_moderator()
 
     if request.method == 'POST':
 	with transaction.commit_on_success():
 	    if is_moderator:
 		form = ModeratorSettingsForm(request.POST,
 					     error_class=PlainErrorList)
 	    else:
 		form = SettingsForm(request.POST, error_class=PlainErrorList)
 
 	    if form.is_valid():
 		selected_theme = form.cleaned_data['theme']
 
 		user.save_setting('theme', selected_theme)
 
 		if is_moderator:
 		    moderate = form.cleaned_data['moderate']
 		    user.save_setting(SETTING_MODERATE, moderate)
 
 		return redirect(settings)
     else:
         selected_theme = _get_theme(request)
 
         if is_moderator:
             form = ModeratorSettingsForm(initial={'theme': selected_theme,
                                          'moderate': context['moderator']},
                                          error_class=PlainErrorList)
         else:
             form = SettingsForm(initial={'theme': selected_theme},
                                 error_class=PlainErrorList)
 
     context['form'] = form
 
     return render(request, 'boards/settings.html', context)
 
 
 def all_tags(request):
     """All tags list"""
 
     context = _init_default_context(request)
     context['all_tags'] = Tag.objects.get_not_empty_tags()
 
     return render(request, 'boards/tags.html', context)
 
 
 def jump_to_post(request, post_id):
     """Determine thread in which the requested post is and open it's page"""
 
     post = get_object_or_404(Post, id=post_id)
 
     if not post.thread:
         return redirect(thread, post_id=post.id)
     else:
         return redirect(reverse(thread, kwargs={'post_id': post.thread.id})
                         + '#' + str(post.id))
 
 
 def authors(request):
     """Show authors list"""
 
     context = _init_default_context(request)
     context['authors'] = boards.authors.authors
 
     return render(request, 'boards/authors.html', context)
 
 
 @transaction.commit_on_success
 def delete(request, post_id):
     """Delete post"""
 
     user = _get_user(request)
     post = get_object_or_404(Post, id=post_id)
 
     if user.is_moderator():
         # TODO Show confirmation page before deletion
         Post.objects.delete_post(post)
     
     if not post.thread:
         return _redirect_to_next(request)
     else:
         return redirect(thread, post_id=post.thread.id)
 
 
 @transaction.commit_on_success
 def ban(request, post_id):
     """Ban user"""
 
     user = _get_user(request)
     post = get_object_or_404(Post, id=post_id)
 
     if user.is_moderator():
         # TODO Show confirmation page before ban
         ban, created = Ban.objects.get_or_create(ip=post.poster_ip)
         if created:
             ban.reason = 'Banned for post ' + str(post_id)
             ban.save()
 
     return _redirect_to_next(request)
 
 
 def you_are_banned(request):
     """Show the page that notifies that user is banned"""
 
     context = _init_default_context(request)
 
     ban = get_object_or_404(Ban, ip=utils.get_client_ip(request))
     context['ban_reason'] = ban.reason
     return render(request, 'boards/staticpages/banned.html', context)
 
 
 def page_404(request):
     """Show page 404 (not found error)"""
 
     context = _init_default_context(request)
     return render(request, 'boards/404.html', context)
 
 
 @transaction.commit_on_success
 def tag_subscribe(request, tag_name):
     """Add tag to favorites"""
 
     user = _get_user(request)
     tag = get_object_or_404(Tag, name=tag_name)
 
     if not tag in user.fav_tags.all():
         user.add_tag(tag)
 
     return _redirect_to_next(request)
 
 
 @transaction.commit_on_success
 def tag_unsubscribe(request, tag_name):
     """Remove tag from favorites"""
 
     user = _get_user(request)
     tag = get_object_or_404(Tag, name=tag_name)
 
     if tag in user.fav_tags.all():
         user.remove_tag(tag)
 
     return _redirect_to_next(request)
 
 
 def static_page(request, name):
     """Show a static page that needs only tags list and a CSS"""
 
     context = _init_default_context(request)
     return render(request, 'boards/staticpages/' + name + '.html', context)
 
 
 def api_get_post(request, post_id):
     """
     Get the JSON of a post. This can be
     used as and API for external clients.
     """
 
     post = get_object_or_404(Post, id=post_id)
 
     json = serializers.serialize("json", [post], fields=(
         "pub_time", "_text_rendered", "title", "text", "image",
         "image_width", "image_height", "replies", "tags"
     ))
 
     return HttpResponse(content=json)
 
 
-def api_get_threaddiff(request, thread_id, last_post_id):
+def api_get_threaddiff(request, thread_id, last_update_time):
     thread = get_object_or_404(Post, id=thread_id)
-    posts = Post.objects.filter(thread=thread, id__gt=last_post_id)
+
+    filter_time = datetime.fromtimestamp(float(last_update_time) / 1000)
+    added_posts = Post.objects.filter(thread=thread, pub_time__gt=filter_time)
 
     json_data = {
-        'added': []
+        'added': [],
+        'last_update' : int(time.time() * 1000),
     }
-    for post in posts:
+    for post in added_posts:
         json_data['added'].append(get_post(request, post.id).content.strip())
 
     return HttpResponse(content=json.dumps(json_data))
 
 
 def get_post(request, post_id):
     """Get the html of a post. Used for popups."""
 
     post = get_object_or_404(Post, id=post_id)
     thread = post.thread
 
     context = RequestContext(request)
     context["post"] = post
     context["can_bump"] = thread.can_bump()
 
     return render(request, 'boards/post.html', context)
 
 
 def _get_theme(request, user=None):
     """Get user's CSS theme"""
 
     if not user:
         user = _get_user(request)
     theme = user.get_setting('theme')
     if not theme:
         theme = neboard.settings.DEFAULT_THEME
 
     return theme
 
 
 def _init_default_context(request):
     """Create context with default values that are used in most views"""
 
     context = RequestContext(request)
 
     user = _get_user(request)
     context['user'] = user
     context['tags'] = user.get_sorted_fav_tags()
 
     theme = _get_theme(request, user)
     context['theme'] = theme
     context['theme_css'] = 'css/' + theme + '/base_page.css'
 
     # This shows the moderator panel
     moderate = user.get_setting(SETTING_MODERATE)
     if moderate == 'True':
         context['moderator'] = user.is_moderator()
     else:
         context['moderator'] = False
 
     return context
 
 
 def _get_user(request):
     """
     Get current user from the session. If the user does not exist, create
     a new one.
     """
 
     session = request.session
     if not 'user_id' in session:
         request.session.save()
 
         md5 = hashlib.md5()
         md5.update(session.session_key)
         new_id = md5.hexdigest()
 
         time_now = timezone.now()
         user = User.objects.create(user_id=new_id, rank=RANK_USER,
                                    registration_time=time_now)
 
         session['user_id'] = user.id
     else:
         user = User.objects.get(id=session['user_id'])
 
     return user
 
 
 def _redirect_to_next(request):
     """
     If a 'next' parameter was specified, redirect to the next page. This is
     used when the user is required to return to some page after the current
     view has finished its work.
     """
 
     if 'next' in request.GET:
         next_page = request.GET['next']
         return HttpResponseRedirect(next_page)
     else:
         return redirect(index)
 
 
 @transaction.commit_on_success
 def _ban_current_user(request):
     """Add current user to the IP ban list"""
 
     ip = utils.get_client_ip(request)
     ban, created = Ban.objects.get_or_create(ip=ip)
     if created:
         ban.can_read = False
         ban.reason = BAN_REASON_SPAM
     ban.save()
 
 
 def _remove_invalid_links(text):
     """
     Replace invalid links in posts so that they won't be parsed.
     Invalid links are links to non-existent posts
     """
 
     for reply_number in re.finditer(REGEX_REPLY, text):
         post_id = reply_number.group(1)
         post = Post.objects.filter(id=post_id)
         if not post.exists():
             text = string.replace(text, '>>' + id, id)
 
     return text