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 from allauth.socialaccount.views import SignupView
   8
   9 from django.conf import settings
  10 from django.contrib import auth
  11 from django.contrib.auth.decorators import login_required
  12 from django.contrib.auth.forms import AuthenticationForm
  13 from django.core.cache import cache
  14 from django.http import HttpResponse, HttpResponseRedirect
  15 from django.shortcuts import render
  16 from django.utils.http import urlquote_plus
  17 from django.utils.translation import ugettext_lazy as _
  18 from django.views.decorators.cache import never_cache
  19
  20 from ajaxable.utils import AjaxableFormView
  21 from ajaxable.utils import placeholdized
  22 from catalogue.models import Book, Collection, Tag, Fragment
  23 from ssify import ssi_included
  24
  25 from social.utils import get_or_choose_cite
  26 from wolnelektury.forms import RegistrationForm, SocialSignupForm
  27
  28
  29 def main_page(request):
  30     ctx = {
  31         'last_published': Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:6],
  32         'theme_books': [],
  33         'cite': get_or_choose_cite(request),
  34     }
  35
  36     # for category in ('author', 'epoch', 'genre', 'kind'):
  37     #     try:
  38     #         ctx[category] = Tag.objects.filter(category=category).order_by('?')[:1][0]
  39     #     except IndexError:
  40     #         pass
  41
  42     # FIXME: find this theme and books properly.
  43     if Fragment.objects.exists():
  44         while True:
  45             ctx['theme'] = Tag.objects.filter(category='theme').order_by('?')[:1][0]
  46             tf = Fragment.tagged.with_any([ctx['theme']]).select_related('book').order_by('?')[:100]
  47             if not tf:
  48                 continue
  49             ctx['theme_fragment'] = tf[0]
  50             for f in tf:
  51                 if f.book not in ctx['theme_books']:
  52                     ctx['theme_books'].append(f.book)
  53                 if len(ctx['theme_books']) == 3:
  54                     break
  55             break
  56
  57     # Choose a collection for main.
  58     try:
  59         ctx['collection'] = Collection.objects.order_by('?')[:1][0]
  60     except IndexError:
  61         pass
  62
  63     ctx['best'] = Book.objects.order_by('?')[:5]
  64
  65     return render(request, "main_page.html", ctx)
  66
  67
  68 class LoginFormView(AjaxableFormView):
  69     form_class = AuthenticationForm
  70     template = "auth/login.html"
  71     placeholdize = True
  72     title = _('Sign in')
  73     submit = _('Sign in')
  74     ajax_redirect = True
  75
  76     def __call__(self, request):
  77         if request.user.is_authenticated():
  78             return self.redirect_or_refresh(
  79                 request, '/',
  80                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
  81         return super(LoginFormView, self).__call__(request)
  82
  83     def success(self, form, request):
  84         auth.login(request, form.get_user())
  85
  86
  87 class RegisterFormView(AjaxableFormView):
  88     form_class = RegistrationForm
  89     template = "auth/register.html"
  90     placeholdize = True
  91     title = _('Register')
  92     submit = _('Register')
  93     ajax_redirect = True
  94     form_prefix = 'register'
  95     honeypot = True
  96
  97     def __call__(self, request):
  98         if request.user.is_authenticated():
  99             return self.redirect_or_refresh(
 100                 request, '/',
 101                 message=_('Already logged in as user %(user)s', ) % {'user': request.user.username})
 102         return super(RegisterFormView, self).__call__(request)
 103
 104     def success(self, form, request):
 105         form.save()
 106         user = auth.authenticate(
 107             username=form.cleaned_data['username'],
 108             password=form.cleaned_data['password1']
 109         )
 110         auth.login(request, user)
 111
 112
 113 class LoginRegisterFormView(LoginFormView):
 114     template = 'auth/login_register.html'
 115     title = _('You have to be logged in to continue')
 116
 117     def extra_context(self, request, obj):
 118         return {
 119             "register_form": placeholdized(RegistrationForm(prefix='register')),
 120             "register_submit": _('Register'),
 121         }
 122
 123
 124 @never_cache
 125 def logout_then_redirect(request):
 126     auth.logout(request)
 127     return HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
 128
 129
 130 @never_cache
 131 def clock(request):
 132     """ Provides server UTC time for jquery.countdown,
 133     in a format suitable for Date.parse()
 134     """
 135     return HttpResponse(datetime.utcnow().strftime('%Y/%m/%d %H:%M:%S UTC'))
 136
 137
 138 def publish_plan(request):
 139     cache_key = "publish_plan"
 140     plan = cache.get(cache_key)
 141
 142     if plan is None:
 143         plan = []
 144         try:
 145             feed = feedparser.parse(settings.PUBLISH_PLAN_FEED)
 146         except:
 147             pass
 148         else:
 149             for i in range(len(feed['entries'])):
 150                 plan.append({
 151                     'title': feed['entries'][i].title,
 152                     'link': feed['entries'][i].link,
 153                     })
 154         cache.set(cache_key, plan, 1800)
 155
 156     return render(request, "publish_plan.html", {'plan': plan})
 157
 158
 159 @login_required
 160 def user_settings(request):
 161     return render(request, "user.html")
 162
 163
 164 @ssi_included(use_lang=False, timeout=1800)
 165 def latest_blog_posts(request, feed_url=None, posts_to_show=5):
 166     if feed_url is None:
 167         feed_url = settings.LATEST_BLOG_POSTS
 168     try:
 169         feed = feedparser.parse(str(feed_url))
 170         posts = []
 171         for i in range(posts_to_show):
 172             pub_date = feed['entries'][i].published_parsed
 173             published = date(pub_date[0], pub_date[1], pub_date[2])
 174             posts.append({
 175                 'title': feed['entries'][i].title,
 176                 'summary': feed['entries'][i].summary,
 177                 'link': feed['entries'][i].link,
 178                 'date': published,
 179                 })
 180     except:
 181         posts = []
 182     return render(request, 'latest_blog_posts.html', {'posts': posts})
 183
 184
 185 @ssi_included(use_lang=False)
 186 def widget(request):
 187     return render(request, 'widget.html')
 188
 189
 190 class SocialSignupView(SignupView):
 191     form_class = SocialSignupForm
 192
 193
 194 def exception_test(request):
 195     msg = request.GET.get('msg')
 196     if msg:
 197         raise Exception('Exception test: %s' % msg)
 198     else:
 199         raise Exception('Exception test')