X-Git-Url: https://git.mdrn.pl/wolnelektury.git/blobdiff_plain/63f861861578b33416a0b2d801252b27443fabde..ca8f4e8fef80cb603117ed579da8554f503698e5:/src/catalogue/views.py

diff --git a/src/catalogue/views.py b/src/catalogue/views.py
index a247746d0..3c4a55fe9 100644
--- a/src/catalogue/views.py
+++ b/src/catalogue/views.py
@@ -1,33 +1,34 @@
-# -*- coding: utf-8 -*-
-# This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
-# Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
+# This file is part of Wolne Lektury, licensed under GNU Affero GPLv3 or later.
+# Copyright © Fundacja Wolne Lektury. See NOTICE for more information.
 #
 from collections import OrderedDict
-import re
 import random
+import re
+from urllib.parse import quote_plus
 
 from django.conf import settings
-from django.template import RequestContext
 from django.template.loader import render_to_string
-from django.shortcuts import render_to_response, get_object_or_404, render, redirect
-from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect, JsonResponse
-from django.core.urlresolvers import reverse
+from django.shortcuts import get_object_or_404, render, redirect
+from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect
+from django.urls import reverse
 from django.db.models import Q, QuerySet
 from django.contrib.auth.decorators import login_required, user_passes_test
-from django.utils.http import urlquote_plus
 from django.utils import translation
-from django.utils.translation import ugettext as _, ugettext_lazy
+from django.utils.translation import gettext_lazy
+from django.views.decorators.cache import never_cache
+from django.views.generic import TemplateView
 
 from ajaxable.utils import AjaxableFormView
-from pdcounter.models import BookStub, Author
+from club.forms import DonationStep1Form
+from club.models import Club
+from annoy.models import DynamicTextInsert
 from pdcounter import views as pdcounter_views
-from picture.models import Picture, PictureArea
-from ssify import ssi_included, ssi_expect, SsiVariable as Var
-from suggest.forms import PublishingSuggestForm
+from wolnelektury.utils import is_ajax
 from catalogue import constants
 from catalogue import forms
 from catalogue.helpers import get_top_level_related_tags
 from catalogue.models import Book, Collection, Tag, Fragment
+from catalogue.models.tag import TagRelation
 from catalogue.utils import split_tags
 from catalogue.models.tag import prefetch_relations
 
@@ -36,40 +37,21 @@ staff_required = user_passes_test(lambda user: user.is_staff)
 
 def catalogue(request):
     return render(request, 'catalogue/catalogue.html', {
-        'books': Book.objects.filter(parent=None),
-        'pictures': Picture.objects.all(),
-        'collections': Collection.objects.all(),
-        'active_menu_item': 'all_works',
+        'books': Book.objects.filter(findable=True, parent=None),
+        'collections': Collection.objects.filter(listed=True),
     })
 
 
-def book_list(request, filters=None, template_name='catalogue/book_list.html',
-              nav_template_name='catalogue/snippets/book_list_nav.html',
-              list_template_name='catalogue/snippets/book_list.html'):
-    """ generates a listing of all books, optionally filtered """
-    books_by_author, orphans, books_by_parent = Book.book_list(filters)
-    books_nav = OrderedDict()
-    for tag in books_by_author:
-        if books_by_author[tag]:
-            books_nav.setdefault(tag.sort_key[0], []).append(tag)
-    # WTF: dlaczego nie include?
-    return render_to_response(template_name, {
-        'rendered_nav': render_to_string(nav_template_name, {'books_nav': books_nav}),
-        'rendered_book_list': render_to_string(list_template_name, {
-            'books_by_author': books_by_author,
-            'orphans': orphans,
-            'books_by_parent': books_by_parent,
-        })
-    }, context_instance=RequestContext(request))
-
-
 def daisy_list(request):
-    return book_list(request, Q(media__type='daisy'), template_name='catalogue/daisy_list.html')
+    return object_list(request, Book.objects.filter(media__type='daisy'))
 
 
 def collection(request, slug):
     coll = get_object_or_404(Collection, slug=slug)
-    return render(request, 'catalogue/collection.html', {'collection': coll})
+    template_name = 'catalogue/collection.html'
+    return render(request, template_name, {
+        'collection': coll,
+    })
 
 
 def differentiate_tags(request, tags, ambiguous_slugs):
@@ -81,86 +63,271 @@ def differentiate_tags(request, tags, ambiguous_slugs):
             'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
             'tags': [tag]
         })
-    return render_to_response(
-        'catalogue/differentiate_tags.html', {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
-        context_instance=RequestContext(request))
+    return render(
+        request,
+        'catalogue/differentiate_tags.html',
+        {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]}
+    )
 
 
-def object_list(request, objects, fragments=None, related_tags=None, tags=None, list_type='books', extra=None):
-    if not tags:
-        tags = []
-    tag_ids = [tag.pk for tag in tags]
+from django.db.models import FilteredRelation, Q
+from django.views.decorators.cache import cache_control
+from django.views.decorators.vary import vary_on_headers
+from django.utils.decorators import method_decorator
+
+
+@method_decorator([
+    vary_on_headers('X-Requested-With'),
+    cache_control(max_age=1),
+], 'dispatch')
+class ObjectListView(TemplateView):
+    page_size = 100
+    themed_page_size = 10
+    item_template_name = ''
+    orderings = {}
+    default_ordering = None
+
+    def analyse(self):
+        self.is_themed = False
+        self.ctx = ctx = {}
+        ctx['tags'] = []        
+
+    def dispatch(self, *args, **kwargs):
+        try:
+            self.analyse()
+        except ResponseInstead as e:
+            return e.response
+        return super().dispatch(*args, **kwargs)
+        
+    def get_orderings(self):
+        order = self.get_order()
+        return [
+            {
+                "slug": k,
+                "name": v[1],
+                "active": k == order,
+                "default": v[0] is None,
+            }
+            for k, v in self.orderings.items()
+        ]
+
+    def get_order(self):
+        order = self.request.GET.get('order')
+        if order not in self.orderings:
+            order = self.default_ordering
+        return order
+
+    def order(self, qs):
+        order_tag = self.get_order()
+        if order_tag:
+            order = self.orderings[order_tag]
+            order_by = order[0]
+            if order_by:
+                qs = qs.order_by(order_by)
+        return qs
+
+    def search(self, qs):
+        return qs
+
+    def get_template_names(self):
+        if is_ajax(self.request) or self.request.GET.get('dyn'):
+            if self.is_themed:
+                return self.dynamic_themed_template_name
+            else:
+                return self.dynamic_template_name
+        else:
+            if self.is_themed:
+                return self.themed_template_name
+            else:
+                return self.template_name
+
+    def get_context_data(self, **kwargs):
+        ctx = super().get_context_data()
+        ctx.update(self.ctx)
+        qs = self.get_queryset()
+        qs = self.search(qs)
+        qs = self.order(qs)
+
+        ctx['object_list'] = qs
+        ctx['suggested_tags'] = self.get_suggested_tags(qs)
+        ctx['suggested_tags_by_category'] = split_tags(ctx['suggested_tags'])
+        return ctx
+
+
+class BookList(ObjectListView):
+    title = gettext_lazy('Literatura')
+    list_type = 'books'
+    template_name = 'catalogue/book_list.html'
+    dynamic_template_name = 'catalogue/dynamic_book_list.html'
+    themed_template_name = 'catalogue/themed_book_list.html'
+    dynamic_themed_template_name = 'catalogue/dynamic_themed_book_list.html'
+
+    orderings = {
+        'pop': ('-popularity__count', gettext_lazy('najpopularniejsze')),
+        'alpha': (None, gettext_lazy('alfabetycznie')),
+    }
+    default_ordering = 'alpha'
+
+    def get_queryset(self):
+        return Book.objects.filter(parent=None, findable=True)
+
+    def search(self, qs):
+        term = self.request.GET.get('search')
+        if term:
+            meta_rels = TagRelation.objects.filter(tag__category='author')
+            # TODO: search tags in currently displaying language
+            if self.is_themed:
+                rels = meta_rels.filter(tag__name_pl__icontains=term)
+                qs = qs.filter(
+                    Q(book__title__icontains=term) |
+                    Q(tag_relations__in=rels) |
+                    Q(text__icontains=term)
+                ).distinct()
+            else:
+                qs = qs.annotate(
+                    meta=FilteredRelation('tag_relations', condition=Q(tag_relations__in=meta_rels))
+                )
+                qs = qs.filter(Q(title__icontains=term) | Q(meta__tag__name_pl__icontains=term)).distinct()
+        return qs
+
+
+class LiteratureView(BookList):
+    def get_suggested_tags(self, queryset):
+        tags = list(get_top_level_related_tags([]))
+        tags.sort(key=lambda t: -t.count)
+        if self.request.user.is_authenticated:
+            tags.extend(list(Tag.objects.filter(user=self.request.user).exclude(name='')))
+        return tags
+
+
+class AudiobooksView(LiteratureView):
+    title = gettext_lazy('Audiobooki')
+    list_type = 'audiobooks'
+
+    def get_queryset(self):
+        return Book.objects.filter(findable=True, media__type='mp3').distinct()
+
+
+class TaggedObjectList(BookList):
+    def analyse(self):
+        super().analyse()
+        self.ctx['tags'] = analyse_tags(self.request, self.kwargs['tags'])
+        self.ctx['fragment_tags'] = [t for t in self.ctx['tags'] if t.category in ('theme', 'object')]
+        self.ctx['work_tags'] = [t for t in self.ctx['tags'] if t not in self.ctx['fragment_tags']]
+        self.is_themed = self.ctx['has_theme'] = bool(self.ctx['fragment_tags'])
+        if self.is_themed:
+            self.ctx['main_tag'] = self.ctx['fragment_tags'][0]
+        elif self.ctx['tags']:
+            self.ctx['main_tag'] = self.ctx['tags'][0]
+        else:
+            self.ctx['main_tag'] = None
+        self.ctx['filtering_tags'] = [
+            t for t in self.ctx['tags']
+            if t is not self.ctx['main_tag']
+        ]
+        if len(self.ctx['tags']) == 1 and self.ctx['main_tag'].category == 'author':
+            self.ctx['translation_list'] = self.ctx['main_tag'].book_set.all()
+
+    def get_queryset(self):
+        qs = Book.tagged.with_all(self.ctx['work_tags']).filter(findable=True)
+        qs = qs.exclude(ancestor__in=qs)
+        if self.is_themed:
+            fqs = Fragment.tagged.with_all(self.ctx['fragment_tags'])
+            if self.ctx['work_tags']:
+                fqs = fqs.filter(
+                    Q(book__in=qs) | Q(book__ancestor__in=qs)
+                )
+            qs = fqs
+        return qs
+
+    def get_suggested_tags(self, queryset):
+        tag_ids = [t.id for t in self.ctx['tags']]
+        if self.is_themed:
+            related_tags = []
+            current_books = self.get_queryset().values_list('book', flat=True).distinct()
+            containing_books = Book.objects.filter(Q(id__in=current_books) | Q(children__in=current_books))
+
+            related_tags.extend(list(
+                Tag.objects.usage_for_queryset(
+                    containing_books,
+                ).exclude(category='set').exclude(pk__in=tag_ids)
+            ))
+            if self.request.user.is_authenticated:
+                related_tags.extend(list(
+                    Tag.objects.usage_for_queryset(
+                        containing_books
+                    ).filter(
+                        user=self.request.user
+                    ).exclude(name='').exclude(pk__in=tag_ids)
+                ))
+        else:
+            related_tags = list(get_top_level_related_tags(self.ctx['tags']))
+            if self.request.user.is_authenticated:
+                qs = Book.tagged.with_all(self.ctx['tags']).filter(findable=True)
+                related_tags.extend(list(
+                    Tag.objects.usage_for_queryset(
+                        qs
+                    ).filter(
+                        user=self.request.user
+                    ).exclude(name='').exclude(pk__in=tag_ids)
+                ))
+
+            fragments = Fragment.objects.filter(
+                Q(book__in=queryset) | Q(book__ancestor__in=queryset)
+            )
+            related_tags.extend(
+                Tag.objects.usage_for_queryset(
+                    fragments, counts=True
+                ).filter(category__in=('theme', 'object')).exclude(pk__in=tag_ids)
+            .only('name', 'sort_key', 'category', 'slug'))
 
+        return related_tags
+
+    
+    
+def object_list(request, objects, list_type='books'):
     related_tag_lists = []
-    if related_tags:
-        related_tag_lists.append(related_tags)
-    else:
+    if True:
         related_tag_lists.append(
-            Tag.objects.usage_for_queryset(objects, counts=True).exclude(category='set').exclude(pk__in=tag_ids))
-    if not (extra and extra.get('theme_is_set')):
-        if fragments is None:
-            if list_type == 'gallery':
-                fragments = PictureArea.objects.filter(picture__in=objects)
-            else:
-                fragments = Fragment.objects.filter(book__in=objects)
+            Tag.objects.usage_for_queryset(
+                objects, counts=True
+            ).exclude(category='set'))
+        if request.user.is_authenticated:
+            related_tag_lists.append(
+                Tag.objects.usage_for_queryset(
+                    objects, counts=True
+                ).filter(
+                    user=request.user
+                ).exclude(name='')
+            )
+    if True:
+        fragments = Fragment.objects.filter(book__in=objects)
         related_tag_lists.append(
-            Tag.objects.usage_for_queryset(fragments, counts=True).filter(category='theme').exclude(pk__in=tag_ids)
+            Tag.objects.usage_for_queryset(
+                fragments, counts=True
+            ).filter(category='theme')
             .only('name', 'sort_key', 'category', 'slug'))
         if isinstance(objects, QuerySet):
             objects = prefetch_relations(objects, 'author')
-
+    
     categories = split_tags(*related_tag_lists)
+    suggest = []
+    for c in ['set', 'author', 'epoch', 'kind', 'genre']:
+        suggest.extend(sorted(categories[c], key=lambda t: -t.count))
 
     objects = list(objects)
 
-    if not objects and len(tags) == 1 and list_type == 'books':
-        if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
-            return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
-
-    if len(objects) > 3:
-        best = random.sample(objects, 3)
-    else:
-        best = objects
-
     result = {
         'object_list': objects,
-        'categories': categories,
+        'suggest': suggest,
         'list_type': list_type,
-        'tags': tags,
-
-        'formats_form': forms.DownloadFormatsForm(),
-        'best': best,
-        'active_menu_item': list_type,
     }
-    if extra:
-        result.update(extra)
-    return render_to_response(
-        'catalogue/tagged_object_list.html', result,
-        context_instance=RequestContext(request))
-
-
-def literature(request):
-    books = Book.objects.filter(parent=None)
-
-    # last_published = Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:20]
-    # most_popular = Book.objects.exclude(cover_thumb='')\
-    #                    .order_by('-popularity__count', 'sort_key_author', 'sort_key')[:20]
-    return object_list(request, books, related_tags=get_top_level_related_tags([]))
-    # extra={
-    #     'last_published': last_published,
-    #     'most_popular': most_popular,
-    # })
-
-
-def gallery(request):
-    return object_list(request, Picture.objects.all(), list_type='gallery')
 
-
-def audiobooks(request):
-    audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
-    return object_list(request, audiobooks, list_type='audiobooks', extra={
-        'daisy': Book.objects.filter(media__type='daisy').distinct(),
-    })
+    template = 'catalogue/author_detail.html'
+        
+    return render(
+        request, template, result,
+    )
 
 
 class ResponseInstead(Exception):
@@ -178,15 +345,16 @@ def analyse_tags(request, tag_str):
         chunks = tag_str.split('/')
         if len(chunks) == 2 and chunks[0] == 'autor':
             raise ResponseInstead(pdcounter_views.author_detail(request, chunks[1]))
-        else:
-            raise Http404
-    except Tag.MultipleObjectsReturned, e:
+        raise Http404
+    except Tag.MultipleObjectsReturned as e:
         # Ask the user to disambiguate
         raise ResponseInstead(differentiate_tags(request, e.tags, e.ambiguous_slugs))
-    except Tag.UrlDeprecationWarning, e:
+    except Tag.UrlDeprecationWarning as e:
         raise ResponseInstead(HttpResponsePermanentRedirect(
             reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)])))
 
+    if not tags:
+        raise Http404
     try:
         if len(tags) > settings.MAX_TAG_LIST:
             raise Http404
@@ -196,66 +364,8 @@ def analyse_tags(request, tag_str):
     return tags
 
 
-def theme_list(request, tags, list_type):
-    shelf_tags = [tag for tag in tags if tag.category == 'set']
-    fragment_tags = [tag for tag in tags if tag.category != 'set']
-    if list_type == 'gallery':
-        fragments = PictureArea.tagged.with_all(fragment_tags)
-    else:
-        fragments = Fragment.tagged.with_all(fragment_tags)
-
-    if shelf_tags:
-        # TODO: Pictures on shelves not supported yet.
-        books = Book.tagged.with_all(shelf_tags).order_by()
-        fragments = fragments.filter(Q(book__in=books) | Q(book__ancestor__in=books))
-
-    if not fragments and len(tags) == 1 and list_type == 'books':
-        if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
-            return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
-
-    return object_list(request, fragments, tags=tags, list_type=list_type, extra={
-        'theme_is_set': True,
-        'active_menu_item': 'theme',
-    })
-
-
 def tagged_object_list(request, tags, list_type):
-    try:
-        tags = analyse_tags(request, tags)
-    except ResponseInstead as e:
-        return e.response
-
-    if list_type == 'gallery' and any(tag.category == 'set' for tag in tags):
-        raise Http404
-
-    if any(tag.category in ('theme', 'thing') for tag in tags):
-        return theme_list(request, tags, list_type=list_type)
-
-    if list_type == 'books':
-        books = Book.tagged.with_all(tags)
-
-        if any(tag.category == 'set' for tag in tags):
-            params = {'objects': books}
-        else:
-            params = {
-                'objects': Book.tagged_top_level(tags),
-                'fragments': Fragment.objects.filter(book__in=books),
-                'related_tags': get_top_level_related_tags(tags),
-            }
-    elif list_type == 'gallery':
-        params = {'objects': Picture.tagged.with_all(tags)}
-    elif list_type == 'audiobooks':
-        audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
-        params = {
-            'objects': Book.tagged.with_all(tags, audiobooks),
-            'extra': {
-                'daisy': Book.tagged.with_all(tags, audiobooks.filter(media__type='daisy').distinct()),
-            }
-        }
-    else:
-        raise Http404
-
-    return object_list(request, tags=tags, list_type=list_type, **params)
+    return TaggedObjectList.as_view()(request, tags=tags)
 
 
 def book_fragments(request, slug, theme_slug):
@@ -264,282 +374,56 @@ def book_fragments(request, slug, theme_slug):
     fragments = Fragment.tagged.with_all([theme]).filter(
         Q(book=book) | Q(book__ancestor=book))
 
-    return render_to_response('catalogue/book_fragments.html', {
-        'book': book,
-        'theme': theme,
-        'fragments': fragments,
-        'active_menu_item': 'books',
-    }, context_instance=RequestContext(request))
+    template_name = 'catalogue/book_fragments.html'
+    return render(
+        request,
+        template_name,
+        {
+            'book': book,
+            'theme': theme,
+            'fragments': fragments,
+        })
 
 
+@never_cache
 def book_detail(request, slug):
     try:
         book = Book.objects.get(slug=slug)
     except Book.DoesNotExist:
         return pdcounter_views.book_stub_detail(request, slug)
 
-    return render_to_response('catalogue/book_detail.html', {
-        'book': book,
-        'tags': book.tags.exclude(category__in=('set', 'theme')),
-        'book_children': book.children.all().order_by('parent_number', 'sort_key'),
-        'active_menu_item': 'books',
-    }, context_instance=RequestContext(request))
-
-
-# używane w publicznym interfejsie
-def player(request, slug):
-    book = get_object_or_404(Book, slug=slug)
-    if not book.has_media('mp3'):
-        raise Http404
-
-    audiobooks, projects = book.get_audiobooks()
-
-    return render_to_response('catalogue/player.html', {
-        'book': book,
-        'audiobook': '',
-        'audiobooks': audiobooks,
-        'projects': projects,
-    }, context_instance=RequestContext(request))
+    return render(
+        request,
+        'catalogue/book_detail.html',
+        {
+            'book': book,
+            'accessible': book.is_accessible_to(request.user),
+            'book_children': book.children.all().order_by('parent_number', 'sort_key'),
+            'club': Club.objects.first() if book.preview else None,
+            'donation_form': DonationStep1Form(),
+        })
 
 
 def book_text(request, slug):
     book = get_object_or_404(Book, slug=slug)
 
+    if not book.is_accessible_to(request.user):
+        return HttpResponseRedirect(book.get_absolute_url())
+
     if not book.has_html_file():
         raise Http404
-    return render_to_response('catalogue/book_text.html', {'book': book}, context_instance=RequestContext(request))
-
-
-# ==========
-# = Search =
-# ==========
-
-def _no_diacritics_regexp(query):
-    """ returns a regexp for searching for a query without diacritics
-
-    should be locale-aware """
-    names = {
-        u'a': u'aąĄ', u'c': u'cćĆ', u'e': u'eęĘ', u'l': u'lłŁ', u'n': u'nńŃ', u'o': u'oóÓ', u's': u'sśŚ',
-        u'z': u'zźżŹŻ',
-        u'ą': u'ąĄ', u'ć': u'ćĆ', u'ę': u'ęĘ', u'ł': u'łŁ', u'ń': u'ńŃ', u'ó': u'óÓ', u'ś': u'śŚ', u'ź': u'źŹ',
-        u'ż': u'żŻ'
-        }
-
-    def repl(m):
-        l = m.group()
-        return u"(?:%s)" % '|'.join(names[l])
-
-    return re.sub(u'[%s]' % (u''.join(names.keys())), repl, query)
-
-
-def unicode_re_escape(query):
-    """ Unicode-friendly version of re.escape """
-    s = list(query)
-    for i, c in enumerate(query):
-        if re.match(r'(?u)(\W)', c) and re.match(r'[\x00-\x7e]', c):
-            if c == "\000":
-                s[i] = "\\000"
-            else:
-                s[i] = "\\" + c
-    return query[:0].join(s)
-
+    with book.html_file.open('r') as f:
+        book_text = f.read()
 
-def _word_starts_with(name, prefix):
-    """returns a Q object getting models having `name` contain a word
-    starting with `prefix`
-
-    We define word characters as alphanumeric and underscore, like in JS.
-
-    Works for MySQL, PostgreSQL, Oracle.
-    For SQLite, _sqlite* version is substituted for this.
-    """
-    kwargs = {}
-
-    prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
-    # can't use [[:<:]] (word start),
-    # but we want both `xy` and `(xy` to catch `(xyz)`
-    kwargs['%s__iregex' % name] = u"(^|[^[:alnum:]_])%s" % prefix
-
-    return Q(**kwargs)
-
-
-def _word_starts_with_regexp(prefix):
-    prefix = _no_diacritics_regexp(unicode_re_escape(prefix))
-    return ur"(^|(?<=[^\wąćęłńóśźżĄĆĘŁŃÓŚŹŻ]))%s" % prefix
-
-
-def _sqlite_word_starts_with(name, prefix):
-    """ version of _word_starts_with for SQLite
-
-    SQLite in Django uses Python re module
-    """
-    kwargs = {'%s__iregex' % name: _word_starts_with_regexp(prefix)}
-    return Q(**kwargs)
-
-
-if hasattr(settings, 'DATABASES'):
-    if settings.DATABASES['default']['ENGINE'] == 'django.db.backends.sqlite3':
-        _word_starts_with = _sqlite_word_starts_with
-elif settings.DATABASE_ENGINE == 'sqlite3':
-    _word_starts_with = _sqlite_word_starts_with
-
-
-class App:
-    def __init__(self, name, view):
-        self.name = name
-        self._view = view
-        self.lower = name.lower()
-        self.category = 'application'
-
-    def view(self):
-        return reverse(*self._view)
-
-_apps = (
-    App(u'Leśmianator', (u'lesmianator', )),
-    )
-
-
-def _tags_starting_with(prefix, user=None):
-    prefix = prefix.lower()
-    # PD counter
-    book_stubs = BookStub.objects.filter(_word_starts_with('title', prefix))
-    authors = Author.objects.filter(_word_starts_with('name', prefix))
-
-    books = Book.objects.filter(_word_starts_with('title', prefix))
-    tags = Tag.objects.filter(_word_starts_with('name', prefix))
-    if user and user.is_authenticated():
-        tags = tags.filter(~Q(category='set') | Q(user=user))
-    else:
-        tags = tags.exclude(category='set')
-
-    prefix_regexp = re.compile(_word_starts_with_regexp(prefix))
-    return list(books) + list(tags) + [app for app in _apps if prefix_regexp.search(app.lower)] + list(book_stubs) + \
-        list(authors)
-
-
-def _get_result_link(match, tag_list):
-    if isinstance(match, Tag):
-        return reverse('catalogue.views.tagged_object_list',
-                       kwargs={'tags': '/'.join(tag.url_chunk for tag in tag_list + [match])})
-    elif isinstance(match, App):
-        return match.view()
-    else:
-        return match.get_absolute_url()
-
-
-def _get_result_type(match):
-    if isinstance(match, Book) or isinstance(match, BookStub):
-        match_type = 'book'
-    else:
-        match_type = match.category
-    return match_type
-
-
-def books_starting_with(prefix):
-    prefix = prefix.lower()
-    return Book.objects.filter(_word_starts_with('title', prefix))
-
-
-def find_best_matches(query, user=None):
-    """ Finds a Book, Tag, BookStub or Author best matching a query.
-
-    Returns a with:
-      - zero elements when nothing is found,
-      - one element when a best result is found,
-      - more then one element on multiple exact matches
-
-    Raises a ValueError on too short a query.
-    """
-
-    query = query.lower()
-    if len(query) < 2:
-        raise ValueError("query must have at least two characters")
-
-    result = tuple(_tags_starting_with(query, user))
-    # remove pdcounter stuff
-    book_titles = set(match.pretty_title().lower() for match in result
-                      if isinstance(match, Book))
-    authors = set(match.name.lower() for match in result
-                  if isinstance(match, Tag) and match.category == 'author')
-    result = tuple(res for res in result if not (
-                 (isinstance(res, BookStub) and res.pretty_title().lower() in book_titles) or
-                 (isinstance(res, Author) and res.name.lower() in authors)
-             ))
-
-    exact_matches = tuple(res for res in result if res.name.lower() == query)
-    if exact_matches:
-        return exact_matches
-    else:
-        return tuple(result)[:1]
-
-
-def search(request):
-    tags = request.GET.get('tags', '')
-    prefix = request.GET.get('q', '')
-
-    try:
-        tag_list = Tag.get_tag_list(tags)
-    except (Tag.DoesNotExist, Tag.MultipleObjectsReturned, Tag.UrlDeprecationWarning):
-        tag_list = []
+    return render(request, 'catalogue/book_text.html', {
+        'book': book,
+        'extra_info': book.get_extra_info_json(),
+        'book_text': book_text,
+        'inserts': DynamicTextInsert.get_all(request),
 
-    try:
-        result = find_best_matches(prefix, request.user)
-    except ValueError:
-        return render_to_response(
-            'catalogue/search_too_short.html', {'tags': tag_list, 'prefix': prefix},
-            context_instance=RequestContext(request))
-
-    if len(result) == 1:
-        return HttpResponseRedirect(_get_result_link(result[0], tag_list))
-    elif len(result) > 1:
-        return render_to_response(
-            'catalogue/search_multiple_hits.html',
-            {
-                'tags': tag_list, 'prefix': prefix,
-                'results': ((x, _get_result_link(x, tag_list), _get_result_type(x)) for x in result)
-            },
-            context_instance=RequestContext(request))
-    else:
-        form = PublishingSuggestForm(initial={"books": prefix + ", "})
-        return render_to_response(
-            'catalogue/search_no_hits.html',
-            {'tags': tag_list, 'prefix': prefix, "pubsuggest_form": form},
-            context_instance=RequestContext(request))
-
-
-def tags_starting_with(request):
-    prefix = request.GET.get('q', '')
-    # Prefix must have at least 2 characters
-    if len(prefix) < 2:
-        return HttpResponse('')
-    tags_list = []
-    result = ""
-    for tag in _tags_starting_with(prefix, request.user):
-        if tag.name not in tags_list:
-            result += "\n" + tag.name
-            tags_list.append(tag.name)
-    return HttpResponse(result)
-
-
-def json_tags_starting_with(request, callback=None):
-    # Callback for JSONP
-    prefix = request.GET.get('q', '')
-    callback = request.GET.get('callback', '')
-    # Prefix must have at least 2 characters
-    if len(prefix) < 2:
-        return HttpResponse('')
-    tags_list = []
-    for tag in _tags_starting_with(prefix, request.user):
-        if tag.name not in tags_list:
-            tags_list.append(tag.name)
-    if request.GET.get('mozhint', ''):
-        result = [prefix, tags_list]
-    else:
-        result = {"matches": tags_list}
-    response = JsonResponse(result, safe=False)
-    if callback:
-        response.content = callback + "(" + response.content + ");"
-    return response
+        'club': Club.objects.first(),
+        'donation_form': DonationStep1Form(),
+    })
 
 
 # =========
@@ -561,11 +445,13 @@ def import_book(request):
             exception = pprint.pformat(info[1])
             tb = '\n'.join(traceback.format_tb(info[2]))
             return HttpResponse(
-                    _("An error occurred: %(exception)s\n\n%(tb)s") % {'exception': exception, 'tb': tb},
-                    mimetype='text/plain')
-        return HttpResponse(_("Book imported successfully"))
-    else:
-        return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
+                "Błąd: %(exception)s\n\n%(tb)s" % {
+                    'exception': exception, 'tb': tb
+                },
+                content_type='text/plain'
+            )
+        return HttpResponse("Książka zaimportowana")
+    return HttpResponse("Błąd podczas importowania pliku: %r" % book_import_form.errors)
 
 
 # info views for API
@@ -574,7 +460,7 @@ def book_info(request, book_id, lang='pl'):
     book = get_object_or_404(Book, id=book_id)
     # set language by hand
     translation.activate(lang)
-    return render_to_response('catalogue/book_info.html', {'book': book}, context_instance=RequestContext(request))
+    return render(request, 'catalogue/book_info.html', {'book': book})
 
 
 def tag_info(request, tag_id):
@@ -582,21 +468,34 @@ def tag_info(request, tag_id):
     return HttpResponse(tag.description)
 
 
-def download_zip(request, format, slug=None):
-    if format in Book.ebook_formats:
-        url = Book.zip_format(format)
-    elif format in ('mp3', 'ogg') and slug is not None:
+@never_cache
+def embargo_link(request, key, format_, slug):
+    book = get_object_or_404(Book, slug=slug)
+    if format_ not in Book.formats:
+        raise Http404
+    if key != book.preview_key:
+        raise Http404
+    media_file = book.get_media(format_)
+    if not book.preview:
+        return HttpResponseRedirect(media_file.url)
+    return HttpResponse(media_file, content_type=constants.EBOOK_CONTENT_TYPES[format_])
+
+
+def download_zip(request, file_format=None, media_format=None, slug=None):
+    if file_format:
+        url = Book.zip_format(file_format)
+    elif media_format and slug is not None:
         book = get_object_or_404(Book, slug=slug)
-        url = book.zip_audiobooks(format)
+        url = book.zip_audiobooks(media_format)
     else:
         raise Http404('No format specified for zip package')
-    return HttpResponseRedirect(urlquote_plus(settings.MEDIA_URL + url, safe='/?='))
+    return HttpResponseRedirect(quote_plus(settings.MEDIA_URL + url, safe='/?='))
 
 
 class CustomPDFFormView(AjaxableFormView):
     form_class = forms.CustomPDFForm
-    title = ugettext_lazy('Download custom PDF')
-    submit = ugettext_lazy('Download')
+    title = gettext_lazy('Stwórz własny PDF')
+    submit = gettext_lazy('Pobierz')
     template = 'catalogue/custom_pdf_form.html'
     honeypot = True
 
@@ -609,98 +508,20 @@ class CustomPDFFormView(AjaxableFormView):
         """Override to parse view args and give additional args to the form."""
         return (obj,), {}
 
+    def validate_object(self, obj, request):
+        book = obj
+        if not book.is_accessible_to(request.user):
+            return HttpResponseRedirect(book.get_absolute_url())
+        return super(CustomPDFFormView, self).validate_object(obj, request)
+
     def get_object(self, request, slug, *args, **kwargs):
-        return get_object_or_404(Book, slug=slug)
+        book = get_object_or_404(Book, slug=slug)
+        return book
 
     def context_description(self, request, obj):
         return obj.pretty_title()
 
 
-####
-# Includes
-####
-
-
-@ssi_included
-def book_mini(request, pk, with_link=True):
-    # book = get_object_or_404(Book, pk=pk)
-    try:
-        book = Book.objects.only('cover_thumb', 'title', 'language', 'slug').get(pk=pk)
-    except Book.DoesNotExist:
-        raise Http404
-    return render(request, 'catalogue/book_mini_box.html', {
-        'book': book,
-        'no_link': not with_link,
-    })
-
-
-@ssi_included(get_ssi_vars=lambda pk: (lambda ipk: (
-        ('ssify.get_csrf_token',),
-        ('social_tags.likes_book', (ipk,)),
-        ('social_tags.book_shelf_tags', (ipk,)),
-    ))(ssi_expect(pk, int)))
-def book_short(request, pk):
-    book = get_object_or_404(Book, pk=pk)
-
-    return render(request, 'catalogue/book_short.html', {
-        'book': book,
-    })
-
-
-@ssi_included(
-    get_ssi_vars=lambda pk: book_short.get_ssi_vars(pk) +
-    (lambda ipk: (
-        ('social_tags.choose_cite', [ipk]),
-        ('catalogue_tags.choose_fragment', [ipk], {
-            'unless': Var('social_tags.choose_cite', [ipk])}),
-    ))(ssi_expect(pk, int)))
-def book_wide(request, pk):
-    book = get_object_or_404(Book, pk=pk)
-    extra_info = book.extra_info
-
-    return render(request, 'catalogue/book_wide.html', {
-        'book': book,
-        'parents': book.parents(),
-        'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
-        'show_lang': book.language_code() != settings.LANGUAGE_CODE,
-
-        'main_link': reverse('book_text', args=[book.slug]) if book.html_file else None,
-        'extra_info': extra_info,
-        'hide_about': extra_info.get('about', '').startswith('http://wiki.wolnepodreczniki.pl'),
-    })
-
-
-@ssi_included
-def fragment_short(request, pk):
-    fragment = get_object_or_404(Fragment, pk=pk)
-    return render(request, 'catalogue/fragment_short.html', {'fragment': fragment})
-
-
-@ssi_included
-def fragment_promo(request, pk):
-    fragment = get_object_or_404(Fragment, pk=pk)
-    return render(request, 'catalogue/fragment_promo.html', {'fragment': fragment})
-
-
-@ssi_included
-def tag_box(request, pk):
-    tag = get_object_or_404(Tag, pk=pk)
-    assert tag.category != 'set'
-
-    return render(request, 'catalogue/tag_box.html', {
-        'tag': tag,
-    })
-
-
-@ssi_included
-def collection_box(request, pk):
-    collection = get_object_or_404(Collection, pk=pk)
-
-    return render(request, 'catalogue/collection_box.html', {
-        'collection': collection,
-    })
-
-
 def tag_catalogue(request, category):
     if category == 'theme':
         tags = Tag.objects.usage_for_model(
@@ -715,24 +536,25 @@ def tag_catalogue(request, category):
     else:
         best = described_tags
 
-    return render(request, 'catalogue/tag_catalogue.html', {
+    template_name = 'catalogue/tag_catalogue.html'
+    return render(request, template_name, {
         'tags': tags,
         'best': best,
         'title': constants.CATEGORIES_NAME_PLURAL[category],
         'whole_category': constants.WHOLE_CATEGORY[category],
-        'active_menu_item': 'theme' if category == 'theme' else None,
     })
 
 
 def collections(request):
-    objects = Collection.objects.all()
+    objects = Collection.objects.filter(listed=True)
 
     if len(objects) > 3:
-        best = random.sample(objects, 3)
+        best = random.sample(list(objects), 4)
     else:
         best = objects
 
-    return render(request, 'catalogue/collections.html', {
+    template_name = 'catalogue/collections.html'
+    return render(request, template_name, {
         'objects': objects,
         'best': best,
     })
@@ -749,4 +571,4 @@ def ridero_cover(request, slug):
 
 def get_isbn(request, book_format, slug):
     book = Book.objects.get(slug=slug)
-    return HttpResponse(book.extra_info.get('isbn_%s' % book_format))
+    return HttpResponse(book.get_extra_info_json().get('isbn_%s' % book_format))