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 from wolnelektury.forms import RegistrationForm
  26
  27
  28 def main_page(request):
  29     ctx = {
  30         'last_published': Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:6],
  31         'theme_books': [],
  32         'cite': get_or_choose_cite(request),
  33     }
  34
  35     # for category in ('author', 'epoch', 'genre', 'kind'):
  36     #     try:
  37     #         ctx[category] = Tag.objects.filter(category=category).order_by('?')[:1][0]
  38     #     except IndexError:
  39     #         pass
  40
  41     # FIXME: find this theme and books properly.
  42     if Fragment.objects.exists():
  43         while True:
  44             ctx['theme'] = Tag.objects.filter(category='theme').order_by('?')[:1][0]
  45             tf = Fragment.tagged.with_any([ctx['theme']]).select_related('book').order_by('?')[:100]
  46             if not tf:
  47                 continue
  48             ctx['theme_fragment'] = tf[0]
  49             for f in tf:
  50                 if f.book not in ctx['theme_books']:
  51                     ctx['theme_books'].append(f.book)
  52                 if len(ctx['theme_books']) == 3:
  53                     break
  54             break
  55
  56     # Choose a collection for main.
  57     try:
  58         ctx['collection'] = Collection.objects.order_by('?')[:1][0]
  59     except IndexError:
  60         pass
  61
  62     ctx['best'] = Book.objects.order_by('?')[:5]
  63
  64     return render(request, "main_page.html", ctx)
  65
  66
  67 class LoginFormView(AjaxableFormView):
  68     form_class = AuthenticationForm
  69     template = "auth/login.html"
  70     placeholdize = True
  71     title = _('Sign in')
  72     submit = _('Sign in')
  73     ajax_redirect = True
  74
  75     def __call__(self, request):
  76         if request.user.is_authenticated():
  77             return self.redirect_or_refresh(
  78                 request, '/',
  79                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
  80         return super(LoginFormView, self).__call__(request)
  81
  82     def success(self, form, request):
  83         auth.login(request, form.get_user())
  84
  85
  86 class RegisterFormView(AjaxableFormView):
  87     form_class = RegistrationForm
  88     template = "auth/register.html"
  89     placeholdize = True
  90     title = _('Register')
  91     submit = _('Register')
  92     ajax_redirect = True
  93     form_prefix = 'register'
  94     honeypot = True
  95
  96     def __call__(self, request):
  97         if request.user.is_authenticated():
  98             return self.redirect_or_refresh(
  99                 request, '/',
 100                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
 101         return super(RegisterFormView, self).__call__(request)
 102
 103     def success(self, form, request):
 104         form.save()
 105         user = auth.authenticate(
 106             username=form.cleaned_data['username'],
 107             password=form.cleaned_data['password1']
 108         )
 109         auth.login(request, user)
 110
 111
 112 class LoginRegisterFormView(LoginFormView):
 113     template = 'auth/login_register.html'
 114     title = _('You have to be logged in to continue')
 115
 116     def extra_context(self, request, obj):
 117         return {
 118             "register_form": placeholdized(UserCreationForm(prefix='register')),
 119             "register_submit": _('Register'),
 120         }
 121
 122
 123 @never_cache
 124 def logout_then_redirect(request):
 125     auth.logout(request)
 126     return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
 127
 128
 129 @never_cache
 130 def clock(request):
 131     """ Provides server UTC time for jquery.countdown,
 132     in a format suitable for Date.parse()
 133     """
 134     return HttpResponse(datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S UTC'))
 135
 136
 137 def publish_plan(request):
 138     cache_key = "publish_plan"
 139     plan = cache.get(cache_key)
 140
 141     if plan is None:
 142         plan = []
 143         try:
 144             feed = feedparser.parse(settings.PUBLISH_PLAN_FEED)
 145         except:
 146             pass
 147         else:
 148             for i in range(len(feed['entries'])):
 149                 plan.append({
 150                     'title': feed['entries'][i].title,
 151                     'link': feed['entries'][i].link,
 152                     })
 153         cache.set(cache_key, plan, 1800)
 154
 155     return render(request, "publish_plan.html", {'plan': plan})
 156
 157
 158 @login_required
 159 def user_settings(request):
 160     return render(request, "user.html")
 161
 162
 163 @ssi_included(use_lang=False, timeout=1800)
 164 def latest_blog_posts(request, feed_url=None, posts_to_show=5):
 165     if feed_url is None:
 166         feed_url = settings.LATEST_BLOG_POSTS
 167     try:
 168         feed = feedparser.parse(str(feed_url))
 169         posts = []
 170         for i in range(posts_to_show):
 171             pub_date = feed['entries'][i].published_parsed
 172             published = date(pub_date[0], pub_date[1], pub_date[2])
 173             posts.append({
 174                 'title': feed['entries'][i].title,
 175                 'summary': feed['entries'][i].summary,
 176                 'link': feed['entries'][i].link,
 177                 'date': published,
 178                 })
 179     except:
 180         posts = []
 181     return render(request, 'latest_blog_posts.html', {'posts': posts})
 182
 183
 184 @ssi_included(use_lang=False)
 185 def widget(request):
 186     return render(request, 'widget.html')
 187
 188
 189 def exception_test(request):
 190     raise Exception('Exception test')