src/wolnelektury/views.py

   1 # -*- coding: utf-8 -*-
   2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
   3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   4 #
   5 from datetime import date, datetime
   6 import feedparser
   7
   8 from django.conf import settings
   9 from django.contrib import auth
  10 from django.contrib.auth.decorators import login_required
  11 from django.contrib.auth.forms import UserCreationForm, AuthenticationForm
  12 from django.core.cache import cache
  13 from django.http import HttpResponse, HttpResponseRedirect
  14 from django.shortcuts import render
  15 from django.utils.http import urlquote_plus
  16 from django.utils.translation import ugettext_lazy as _
  17 from django.views.decorators.cache import never_cache
  18
  19 from ajaxable.utils import AjaxableFormView
  20 from ajaxable.utils import placeholdized
  21 from catalogue.models import Book, Collection, Tag, Fragment
  22 from ssify import ssi_included
  23
  24 from social.utils import get_or_choose_cite
  25
  26
  27 def main_page(request):
  28     ctx = {
  29         'last_published': Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:6],
  30         'theme_books': [],
  31         'cite': get_or_choose_cite(request),
  32     }
  33
  34     # for category in ('author', 'epoch', 'genre', 'kind'):
  35     #     try:
  36     #         ctx[category] = Tag.objects.filter(category=category).order_by('?')[:1][0]
  37     #     except IndexError:
  38     #         pass
  39
  40     # FIXME: find this theme and books properly.
  41     if Fragment.objects.exists():
  42         while True:
  43             ctx['theme'] = Tag.objects.filter(category='theme').order_by('?')[:1][0]
  44             tf = Fragment.tagged.with_any([ctx['theme']]).select_related('book').order_by('?')[:100]
  45             if not tf:
  46                 continue
  47             ctx['theme_fragment'] = tf[0]
  48             for f in tf:
  49                 if f.book not in ctx['theme_books']:
  50                     ctx['theme_books'].append(f.book)
  51                 if len(ctx['theme_books']) == 3:
  52                     break
  53             break
  54
  55     # Choose a collection for main.
  56     try:
  57         ctx['collection'] = Collection.objects.order_by('?')[:1][0]
  58     except IndexError:
  59         pass
  60
  61     ctx['best'] = Book.objects.order_by('?')[:5]
  62
  63     return render(request, "main_page.html", ctx)
  64
  65
  66 class LoginFormView(AjaxableFormView):
  67     form_class = AuthenticationForm
  68     template = "auth/login.html"
  69     placeholdize = True
  70     title = _('Sign in')
  71     submit = _('Sign in')
  72     ajax_redirect = True
  73
  74     def __call__(self, request):
  75         if request.user.is_authenticated():
  76             return self.redirect_or_refresh(
  77                 request, '/',
  78                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
  79         return super(LoginFormView, self).__call__(request)
  80
  81     def success(self, form, request):
  82         auth.login(request, form.get_user())
  83
  84
  85 class RegisterFormView(AjaxableFormView):
  86     form_class = UserCreationForm
  87     template = "auth/register.html"
  88     placeholdize = True
  89     title = _('Register')
  90     submit = _('Register')
  91     ajax_redirect = True
  92     form_prefix = 'register'
  93     honeypot = True
  94
  95     def __call__(self, request):
  96         if request.user.is_authenticated():
  97             return self.redirect_or_refresh(
  98                 request, '/',
  99                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
 100         return super(RegisterFormView, self).__call__(request)
 101
 102     def success(self, form, request):
 103         form.save()
 104         user = auth.authenticate(
 105             username=form.cleaned_data['username'],
 106             password=form.cleaned_data['password1']
 107         )
 108         auth.login(request, user)
 109
 110
 111 class LoginRegisterFormView(LoginFormView):
 112     template = 'auth/login_register.html'
 113     title = _('You have to be logged in to continue')
 114
 115     def extra_context(self, request, obj):
 116         return {
 117             "register_form": placeholdized(UserCreationForm(prefix='register')),
 118             "register_submit": _('Register'),
 119         }
 120
 121
 122 @never_cache
 123 def logout_then_redirect(request):
 124     auth.logout(request)
 125     return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
 126
 127
 128 @never_cache
 129 def clock(request):
 130     """ Provides server UTC time for jquery.countdown,
 131     in a format suitable for Date.parse()
 132     """
 133     return HttpResponse(datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S UTC'))
 134
 135
 136 def publish_plan(request):
 137     cache_key = "publish_plan"
 138     plan = cache.get(cache_key)
 139
 140     if plan is None:
 141         plan = []
 142         try:
 143             feed = feedparser.parse(settings.PUBLISH_PLAN_FEED)
 144         except:
 145             pass
 146         else:
 147             for i in range(len(feed['entries'])):
 148                 plan.append({
 149                     'title': feed['entries'][i].title,
 150                     'link': feed['entries'][i].link,
 151                     })
 152         cache.set(cache_key, plan, 1800)
 153
 154     return render(request, "publish_plan.html", {'plan': plan})
 155
 156
 157 @login_required
 158 def user_settings(request):
 159     return render(request, "user.html")
 160
 161
 162 @ssi_included(use_lang=False, timeout=1800)
 163 def latest_blog_posts(request, feed_url=None, posts_to_show=5):
 164     if feed_url is None:
 165         feed_url = settings.LATEST_BLOG_POSTS
 166     try:
 167         feed = feedparser.parse(str(feed_url))
 168         posts = []
 169         for i in range(posts_to_show):
 170             pub_date = feed['entries'][i].published_parsed
 171             published = date(pub_date[0], pub_date[1], pub_date[2])
 172             posts.append({
 173                 'title': feed['entries'][i].title,
 174                 'summary': feed['entries'][i].summary,
 175                 'link': feed['entries'][i].link,
 176                 'date': published,
 177                 })
 178     except:
 179         posts = []
 180     return render(request, 'latest_blog_posts.html', {'posts': posts})
 181
 182
 183 @ssi_included(use_lang=False)
 184 def widget(request):
 185     return render(request, 'widget.html')