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Minor css fix.
[wolnelektury.git] / src / catalogue / views.py
diff --git a/src/catalogue/views.py b/src/catalogue/views.py
index e71895f..62d34bb 100644 (file)
--- a/src/catalogue/views.py
+++ b/src/catalogue/views.py
@@ -1,533 +1,340 @@
-# -*- 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.
 #
 from collections import OrderedDict
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from collections import OrderedDict
-import re
 import random
 
 from django.conf import settings
 import random
 
 from django.conf import settings
-from django.template import RequestContext
 from django.template.loader import render_to_string
 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.db.models import Q
+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.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.views.decorators.cache import never_cache
 
 from ajaxable.utils import AjaxableFormView
 
 from ajaxable.utils import AjaxableFormView
-from pdcounter import models as pdcounter_models
+from club.forms import ScheduleForm
+from club.models import Club, Membership
+from annoy.models import DynamicTextInsert
 from pdcounter import views as pdcounter_views
 from picture.models import Picture, PictureArea
 from pdcounter import views as pdcounter_views
 from picture.models import Picture, PictureArea
-from ssify import ssi_included, ssi_expect, SsiVariable as V
-from suggest.forms import PublishingSuggestForm
 from catalogue import constants
 from catalogue import forms
 from catalogue.helpers import get_top_level_related_tags
 from catalogue import constants
 from catalogue import forms
 from catalogue.helpers import get_top_level_related_tags
-from catalogue import models
+from catalogue.models import Book, Collection, Tag, Fragment
 from catalogue.utils import split_tags
 from catalogue.utils import split_tags
+from catalogue.models.tag import prefetch_relations
 
 staff_required = user_passes_test(lambda user: user.is_staff)
 
 
 
 staff_required = user_passes_test(lambda user: user.is_staff)
 
 
-def catalogue(request, as_json=False):
-    books = models.Book.objects.filter(parent=None)
-    pictures = Picture.objects.all()
-    collections = models.Collection.objects.all()
-    return render(request, 'catalogue/catalogue.html', locals())
+def catalogue(request):
+    return render(request, 'catalogue/catalogue.html', {
+        'books': Book.objects.filter(findable=True, parent=None),
+        'pictures': Picture.objects.all(),
+        'collections': Collection.objects.filter(listed=True),
+        'active_menu_item': 'all_works',
+    })
 
 
 
 
-def book_list(request, filter=None, get_filter=None, template_name='catalogue/book_list.html',
+def book_list(request, filters=None, template_name='catalogue/book_list.html',
               nav_template_name='catalogue/snippets/book_list_nav.html',
               nav_template_name='catalogue/snippets/book_list_nav.html',
-              list_template_name='catalogue/snippets/book_list.html', context=None):
-    """ generates a listing of all books, optionally filtered with a test function """
-    if get_filter:
-        filter = get_filter()
-    books_by_author, orphans, books_by_parent = models.Book.book_list(filter)
+              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)
     books_nav = OrderedDict()
     for tag in books_by_author:
         if books_by_author[tag]:
             books_nav.setdefault(tag.sort_key[0], []).append(tag)
-    rendered_nav = render_to_string(nav_template_name, locals())
-    rendered_book_list = render_to_string(list_template_name, locals())
-    return render_to_response(template_name, locals(), context_instance=RequestContext(request))
-
-
-def audiobook_list(request):
-    books = models.Book.objects.filter(Q(media__type='mp3') | Q(media__type='ogg')).distinct()
-    books = list(books)
-    if len(books) > 3:
-        best = random.sample(books, 3)
-    else:
-        best = books
-
-    daisy = models.Book.objects.filter(media__type='daisy').distinct()
-
-    return render(request, 'catalogue/audiobook_list.html', {
-        'books': books,
-        'best': best,
-        'daisy': daisy,
+    return render(request, 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,
         })
         })
+    })
 
 
 def daisy_list(request):
 
 
 def daisy_list(request):
-    return book_list(request, Q(media__type='daisy'),
-                     template_name='catalogue/daisy_list.html',
-                     )
+    return book_list(request, Q(media__type='daisy'), template_name='catalogue/daisy_list.html')
 
 
 def collection(request, slug):
 
 
 def collection(request, slug):
-    coll = get_object_or_404(models.Collection, slug=slug)
-    return render(request, 'catalogue/collection.html', {'collection': coll})
+    coll = get_object_or_404(Collection, slug=slug)
+    return render(request, 'catalogue/collection.html', {
+        'collection': coll,
+        'active_menu_item': 'collections',
+    })
 
 
 def differentiate_tags(request, tags, ambiguous_slugs):
     beginning = '/'.join(tag.url_chunk for tag in tags)
     unparsed = '/'.join(ambiguous_slugs[1:])
     options = []
 
 
 def differentiate_tags(request, tags, ambiguous_slugs):
     beginning = '/'.join(tag.url_chunk for tag in tags)
     unparsed = '/'.join(ambiguous_slugs[1:])
     options = []
-    for tag in models.Tag.objects.filter(slug=ambiguous_slugs[0]):
+    for tag in Tag.objects.filter(slug=ambiguous_slugs[0]):
         options.append({
             'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
             'tags': [tag]
         })
         options.append({
             '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))
-
-
-# TODO: Rewrite this hellish piece of code which tries to do everything
-def tagged_object_list(request, tags='', gallery=False):
-    raw_tags = tags
-    # preliminary tests and conditions
-    try:
-        tags = models.Tag.get_tag_list(tags)
-    except models.Tag.DoesNotExist:
-        # Perhaps the user is asking about an author in Public Domain
-        # counter (they are not represented in tags)
-        chunks = tags.split('/')
-        if len(chunks) == 2 and chunks[0] == 'autor':
-            return pdcounter_views.author_detail(request, chunks[1])
-        else:
-            raise Http404
-    except models.Tag.MultipleObjectsReturned, e:
-        # Ask the user to disambiguate
-        return differentiate_tags(request, e.tags, e.ambiguous_slugs)
-    except models.Tag.UrlDeprecationWarning, e:
-        return HttpResponsePermanentRedirect(
-            reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)]))
-
-    try:
-        if len(tags) > settings.MAX_TAG_LIST:
-            raise Http404
-    except AttributeError:
-        pass
+    return render(
+        request,
+        'catalogue/differentiate_tags.html',
+        {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]}
+    )
 
 
-    # beginning of digestion
-    theme_is_set = [tag for tag in tags if tag.category == 'theme']
-    shelf_is_set = [tag for tag in tags if tag.category == 'set']
-    only_shelf = shelf_is_set and len(tags) == 1
-    only_my_shelf = only_shelf and request.user.is_authenticated() and request.user == tags[0].user
-    tags_pks = [tag.pk for tag in tags]
-
-    objects = None
-
-    if theme_is_set:
-        # Only fragments (or pirctureareas) here.
-        shelf_tags = [tag for tag in tags if tag.category == 'set']
-        fragment_tags = [tag for tag in tags if tag.category != 'set']
-        if gallery:
-            fragments = PictureArea.tagged.with_all(fragment_tags)
-        else:
-            fragments = models.Fragment.tagged.with_all(fragment_tags)
 
 
-        if shelf_tags:
-            if gallery:
-                # TODO: Pictures on shelves not supported yet.
-                raise Http404
-            else:
-                books = models.Book.tagged.with_all(shelf_tags).order_by()
-                fragments = fragments.filter(Q(book__in=books) | Q(book__ancestor__in=books))
+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]
 
 
-        categories = split_tags(
-            models.Tag.objects.usage_for_queryset(fragments, counts=True).exclude(pk__in=tags_pks),
-        )
-
-        objects = fragments
+    related_tag_lists = []
+    if related_tags:
+        related_tag_lists.append(related_tags)
     else:
     else:
-        if gallery:
-            if shelf_is_set:
-                # TODO: Pictures on shelves not supported yet.
-                raise Http404
-            else:
-                if tags:
-                    objects = Picture.tagged.with_all(tags).order_by(
-                        'sort_key_author', 'title')
-                else:
-                    objects = Picture.objects.all().order_by(
-                        'sort_key_author', 'title')
-            areas = PictureArea.objects.filter(picture__in=objects)
-            categories = split_tags(
-                models.Tag.objects.usage_for_queryset(
-                    objects, counts=True).exclude(pk__in=tags_pks),
-                models.Tag.objects.usage_for_queryset(
-                    areas, counts=True).filter(
-                    category__in=('theme', 'thing')).exclude(
-                    pk__in=tags_pks),
-            )
-        else:
-            if tags:
-                all_books = models.Book.tagged.with_all(tags)
-            else:
-                all_books = models.Book.objects.filter(parent=None)
-            if shelf_is_set:
-                objects = all_books.order_by('sort_key_author', 'title')
-                related_book_tags = models.Tag.objects.usage_for_queryset(
-                    objects, counts=True).exclude(
-                    category='set').exclude(pk__in=tags_pks)
+        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:
             else:
-                if tags:
-                    objects = models.Book.tagged_top_level(tags).order_by(
-                        'sort_key_author', 'title')
-                else:
-                    objects = all_books.order_by('sort_key_author', 'title')
-                # WTF: was outside if, overwriting value assigned if shelf_is_set
-                related_book_tags = get_top_level_related_tags(tags)
-
-            fragments = models.Fragment.objects.filter(book__in=all_books)
-
-            categories = split_tags(
-                related_book_tags,
-                models.Tag.objects.usage_for_queryset(
-                    fragments, counts=True).filter(
-                    category='theme').exclude(pk__in=tags_pks),
-            )
+                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)
+            .only('name', 'sort_key', 'category', 'slug'))
+        if isinstance(objects, QuerySet):
+            objects = prefetch_relations(objects, 'author')
+
+    categories = split_tags(*related_tag_lists)
 
     objects = list(objects)
 
     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
 
     if len(objects) > 3:
         best = random.sample(objects, 3)
     else:
         best = objects
 
-    if not gallery and not objects and len(tags) == 1:
-        tag = tags[0]
-        if (tag.category in ('theme', 'thing') and PictureArea.tagged.with_any([tag]).exists() or
-                Picture.tagged.with_any([tag]).exists()):
-            return redirect('tagged_object_list_gallery', raw_tags, permanent=False)
-
-    return render_to_response(
-        'catalogue/tagged_object_list.html',
-        {
-            'object_list': objects,
-            'categories': categories,
-            'only_shelf': only_shelf,
-            'only_my_shelf': only_my_shelf,
-            'formats_form': forms.DownloadFormatsForm(),
-            'tags': tags,
-            'tag_ids': tags_pks,
-            'theme_is_set': theme_is_set,
-            'best': best,
-            'gallery': gallery,
-        },
-        context_instance=RequestContext(request))
-
-
-def book_fragments(request, slug, theme_slug):
-    book = get_object_or_404(models.Book, slug=slug)
-    theme = get_object_or_404(models.Tag, slug=theme_slug, category='theme')
-    fragments = models.Fragment.tagged.with_all([theme]).filter(
-        Q(book=book) | Q(book__ancestor=book))
-
-    return render_to_response('catalogue/book_fragments.html', locals(), context_instance=RequestContext(request))
-
+    result = {
+        'object_list': objects,
+        'categories': categories,
+        'list_type': list_type,
+        'tags': tags,
 
 
-def book_detail(request, slug):
-    try:
-        book = models.Book.objects.get(slug=slug)
-    except models.Book.DoesNotExist:
-        return pdcounter_views.book_stub_detail(request, slug)
+        'formats_form': forms.DownloadFormatsForm(),
+        'best': best,
+        'active_menu_item': list_type,
+    }
+    if extra:
+        result.update(extra)
+    return render(
+        request,
+        'catalogue/tagged_object_list.html', result,
+    )
 
 
-    tags = book.tags.exclude(category__in=('set', 'theme'))
-    book_children = book.children.all().order_by('parent_number', 'sort_key')
-    return render_to_response('catalogue/book_detail.html', locals(), context_instance=RequestContext(request))
 
 
+def literature(request):
+    books = Book.objects.filter(parent=None, findable=True)
+    return object_list(request, books, related_tags=get_top_level_related_tags([]))
 
 
-def get_audiobooks(book):
-    ogg_files = {}
-    for m in book.media.filter(type='ogg').order_by().iterator():
-        ogg_files[m.name] = m
 
 
-    audiobooks = []
-    have_oggs = True
-    projects = set()
-    for mp3 in book.media.filter(type='mp3').iterator():
-        # ogg files are always from the same project
-        meta = mp3.extra_info
-        project = meta.get('project')
-        if not project:
-            # temporary fallback
-            project = u'CzytamySłuchając'
+def gallery(request):
+    return object_list(request, Picture.objects.all(), list_type='gallery')
 
 
-        projects.add((project, meta.get('funded_by', '')))
 
 
-        media = {'mp3': mp3}
+def audiobooks(request):
+    audiobooks = Book.objects.filter(findable=True, media__type__in=('mp3', 'ogg')).distinct()
+    return object_list(request, audiobooks, list_type='audiobooks', extra={
+        'daisy': Book.objects.filter(findable=True, media__type='daisy').distinct(),
+    })
 
 
-        ogg = ogg_files.get(mp3.name)
-        if ogg:
-            media['ogg'] = ogg
-        else:
-            have_oggs = False
-        audiobooks.append(media)
 
 
-    projects = sorted(projects)
-    return audiobooks, projects, have_oggs
+class ResponseInstead(Exception):
+    def __init__(self, response):
+        super(ResponseInstead, self).__init__()
+        self.response = response
 
 
 
 
-def player(request, slug):
-    book = get_object_or_404(models.Book, slug=slug)
-    if not book.has_media('mp3'):
+def analyse_tags(request, tag_str):
+    try:
+        tags = Tag.get_tag_list(tag_str)
+    except Tag.DoesNotExist:
+        # Perhaps the user is asking about an author in Public Domain
+        # counter (they are not represented in tags)
+        chunks = tag_str.split('/')
+        if len(chunks) == 2 and chunks[0] == 'autor':
+            raise ResponseInstead(pdcounter_views.author_detail(request, chunks[1]))
         raise Http404
         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 as e:
+        raise ResponseInstead(HttpResponsePermanentRedirect(
+            reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)])))
+
+    try:
+        if len(tags) > settings.MAX_TAG_LIST:
+            raise Http404
+    except AttributeError:
+        pass
 
 
-    audiobooks, projects, have_oggs = get_audiobooks(book)
+    return tags
 
 
-    extra_info = book.extra_info
 
 
-    return render_to_response('catalogue/player.html', locals(), context_instance=RequestContext(request))
+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))
+    elif list_type == 'books':
+        fragments = fragments.filter(book__findable=True)
+
+    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 book_text(request, slug):
-    book = get_object_or_404(models.Book, slug=slug)
+def tagged_object_list(request, tags, list_type):
+    try:
+        tags = analyse_tags(request, tags)
+    except ResponseInstead as e:
+        return e.response
 
 
-    if not book.has_html_file():
+    if list_type == 'gallery' and any(tag.category == 'set' for tag in tags):
         raise Http404
         raise Http404
-    return render_to_response('catalogue/book_text.html', locals(), context_instance=RequestContext(request))
-
 
 
-# ==========
-# = Search =
-# ==========
+    if any(tag.category in ('theme', 'thing') for tag in tags):
+        return theme_list(request, tags, list_type=list_type)
 
 
-def _no_diacritics_regexp(query):
-    """ returns a regexp for searching for a query without diacritics
+    if list_type == 'books':
+        books = Book.tagged.with_all(tags)
 
 
-    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'
+        if any(tag.category == 'set' for tag in tags):
+            params = {'objects': books}
+        else:
+            books = books.filter(findable=True)
+            params = {
+                'objects': Book.tagged_top_level(tags).filter(findable=True),
+                '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(findable=True, 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()
+                ),
+            }
         }
         }
-
-    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 """
-    return re.sub(r'(?u)(\W)', r'\\\1', query)
-
-
-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 = pdcounter_models.BookStub.objects.filter(_word_starts_with('title', prefix))
-    authors = pdcounter_models.Author.objects.filter(_word_starts_with('name', prefix))
-
-    books = models.Book.objects.filter(_word_starts_with('title', prefix))
-    tags = models.Tag.objects.filter(_word_starts_with('name', prefix))
-    if user and user.is_authenticated():
-        tags = tags.filter(~Q(category='set') | Q(user=user))
     else:
     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)
+        raise Http404
 
 
+    return object_list(request, tags=tags, list_type=list_type, **params)
 
 
-def _get_result_link(match, tag_list):
-    if isinstance(match, models.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 book_fragments(request, slug, theme_slug):
+    book = get_object_or_404(Book, slug=slug)
+    theme = get_object_or_404(Tag, slug=theme_slug, category='theme')
+    fragments = Fragment.tagged.with_all([theme]).filter(
+        Q(book=book) | Q(book__ancestor=book))
 
 
-def _get_result_type(match):
-    if isinstance(match, models.Book) or isinstance(match, pdcounter_models.BookStub):
-        match_type = 'book'
-    else:
-        match_type = match.category
-    return match_type
+    return render(
+        request,
+        'catalogue/book_fragments.html',
+        {
+            'book': book,
+            'theme': theme,
+            'fragments': fragments,
+            'active_menu_item': 'books',
+        })
 
 
 
 
-def books_starting_with(prefix):
-    prefix = prefix.lower()
-    return models.Book.objects.filter(_word_starts_with('title', prefix))
+@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(
+        request,
+        'catalogue/2021/book_detail.html' if request.EXPERIMENTS['layout'] == 'new' else 'catalogue/book_detail.html',
+        {
+            'book': book,
+            'book_children': book.children.all().order_by('parent_number', 'sort_key'),
+            'active_menu_item': 'books',
+            'club_form': ScheduleForm() if book.preview else None,
+            'club': Club.objects.first() if book.preview else None,
 
 
-def find_best_matches(query, user=None):
-    """ Finds a models.Book, Tag, models.BookStub or Author best matching a query.
+            'EXPERIMENTS_SWITCHABLE_layout': True,
+        })
 
 
-    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.
-    """
+# używane w publicznym interfejsie
+def player(request, slug):
+    book = get_object_or_404(Book, slug=slug)
+    if not book.has_media('mp3'):
+        raise Http404
 
 
-    query = query.lower()
-    if len(query) < 2:
-        raise ValueError("query must have at least two characters")
+    audiobooks, projects = book.get_audiobooks()
 
 
-    result = tuple(_tags_starting_with(query, user))
-    # remove pdcounter stuff
-    book_titles = set(match.pretty_title().lower() for match in result
-                      if isinstance(match, models.Book))
-    authors = set(match.name.lower() for match in result
-                  if isinstance(match, models.Tag) and match.category == 'author')
-    result = tuple(res for res in result if not (
-                 (isinstance(res, pdcounter_models.BookStub) and res.pretty_title().lower() in book_titles) or
-                 (isinstance(res, pdcounter_models.Author) and res.name.lower() in authors)
-             ))
+    return render(
+        request,
+        'catalogue/player.html',
+        {
+            'book': book,
+            'audiobook': '',
+            'audiobooks': audiobooks,
+            'projects': projects,
+        })
 
 
-    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 book_text(request, slug):
+    book = get_object_or_404(Book, slug=slug)
 
 
-def search(request):
-    tags = request.GET.get('tags', '')
-    prefix = request.GET.get('q', '')
+    if book.preview and not Membership.is_active_for(request.user):
+        return HttpResponseRedirect(book.get_absolute_url())
 
 
-    try:
-        tag_list = models.Tag.get_tag_list(tags)
-    except (models.Tag.DoesNotExist, models.Tag.MultipleObjectsReturned, models.Tag.UrlDeprecationWarning):
-        tag_list = []
+    if not book.has_html_file():
+        raise Http404
+    with book.html_file.open('r') as f:
+        book_text = f.read()
 
 
-    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
+    return render(request, 'catalogue/book_text.html', {
+        'book': book,
+        'book_text': book_text,
+        'inserts': DynamicTextInsert.get_all(request)
+    })
 
 
 # =========
 
 
 # =========
@@ -549,32 +356,47 @@ def import_book(request):
             exception = pprint.pformat(info[1])
             tb = '\n'.join(traceback.format_tb(info[2]))
             return HttpResponse(
             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')
+                _("An error occurred: %(exception)s\n\n%(tb)s") % {
+                    'exception': exception, 'tb': tb
+                },
+                content_type='text/plain'
+            )
         return HttpResponse(_("Book imported successfully"))
         return HttpResponse(_("Book imported successfully"))
-    else:
-        return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
+    return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
 
 
 # info views for API
 
 def book_info(request, book_id, lang='pl'):
 
 
 # info views for API
 
 def book_info(request, book_id, lang='pl'):
-    book = get_object_or_404(models.Book, id=book_id)
+    book = get_object_or_404(Book, id=book_id)
     # set language by hand
     translation.activate(lang)
     # set language by hand
     translation.activate(lang)
-    return render_to_response('catalogue/book_info.html', locals(), context_instance=RequestContext(request))
+    return render(request, 'catalogue/book_info.html', {'book': book})
 
 
 def tag_info(request, tag_id):
 
 
 def tag_info(request, tag_id):
-    tag = get_object_or_404(models.Tag, id=tag_id)
+    tag = get_object_or_404(Tag, id=tag_id)
     return HttpResponse(tag.description)
 
 
     return HttpResponse(tag.description)
 
 
+@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, format, slug=None):
 def download_zip(request, format, slug=None):
-    if format in models.Book.ebook_formats:
-        url = models.Book.zip_format(format)
+    if format in Book.ebook_formats:
+        url = Book.zip_format(format)
     elif format in ('mp3', 'ogg') and slug is not None:
     elif format in ('mp3', 'ogg') and slug is not None:
-        book = get_object_or_404(models.Book, slug=slug)
+        book = get_object_or_404(Book, slug=slug)
         url = book.zip_audiobooks(format)
     else:
         raise Http404('No format specified for zip package')
         url = book.zip_audiobooks(format)
     else:
         raise Http404('No format specified for zip package')
@@ -585,6 +407,7 @@ class CustomPDFFormView(AjaxableFormView):
     form_class = forms.CustomPDFForm
     title = ugettext_lazy('Download custom PDF')
     submit = ugettext_lazy('Download')
     form_class = forms.CustomPDFForm
     title = ugettext_lazy('Download custom PDF')
     submit = ugettext_lazy('Download')
+    template = 'catalogue/custom_pdf_form.html'
     honeypot = True
 
     def __call__(self, *args, **kwargs):
     honeypot = True
 
     def __call__(self, *args, **kwargs):
@@ -596,144 +419,67 @@ class CustomPDFFormView(AjaxableFormView):
         """Override to parse view args and give additional args to the form."""
         return (obj,), {}
 
         """Override to parse view args and give additional args to the form."""
         return (obj,), {}
 
+    def validate_object(self, obj, request):
+        book = obj
+        if book.preview and not Membership.is_active_for(request.user):
+            return HttpResponseRedirect(book.get_absolute_url())
+        return super(CustomPDFFormView, self).validate_object(obj, request)
+
     def get_object(self, request, slug, *args, **kwargs):
     def get_object(self, request, slug, *args, **kwargs):
-        return get_object_or_404(models.Book, slug=slug)
+        book = get_object_or_404(Book, slug=slug)
+        return book
 
     def context_description(self, request, obj):
         return obj.pretty_title()
 
 
 
     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(models.Book, pk=pk)
-    author_str = ", ".join(tag.name for tag in book.tags.filter(category='author'))
-    return render(request, 'catalogue/book_mini_box.html', {
-        'book': book,
-        'author_str': author_str,
-        'with_link': with_link,
-        'show_lang': book.language_code() != settings.LANGUAGE_CODE,
-    })
-
-
-@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(models.Book, pk=pk)
-    stage_note, stage_note_url = book.stage_note()
-    audiobooks, projects, have_oggs = get_audiobooks(book)
-
-    return render(request, 'catalogue/book_short.html', {
-        'book': book,
-        'has_audio': book.has_media('mp3'),
-        'main_link': book.get_absolute_url(),
-        'parents': book.parents(),
-        'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
-        'show_lang': book.language_code() != settings.LANGUAGE_CODE,
-        'stage_note': stage_note,
-        'stage_note_url': stage_note_url,
-        'audiobooks': audiobooks,
-        'have_oggs': have_oggs,
-    })
-
-
-@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': V('social_tags.choose_cite', [ipk])}),
-    ))(ssi_expect(pk, int)))
-def book_wide(request, pk):
-    book = get_object_or_404(models.Book, pk=pk)
-    stage_note, stage_note_url = book.stage_note()
-    extra_info = book.extra_info
-    audiobooks, projects, have_oggs = get_audiobooks(book)
-
-    return render(request, 'catalogue/book_wide.html', {
-        'book': book,
-        'has_audio': book.has_media('mp3'),
-        'parents': book.parents(),
-        'tags': split_tags(book.tags.exclude(category__in=('set', 'theme'))),
-        'show_lang': book.language_code() != settings.LANGUAGE_CODE,
-        'stage_note': stage_note,
-        'stage_note_url': stage_note_url,
-
-        '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'),
-        'audiobooks': audiobooks,
-        'have_oggs': have_oggs,
-    })
-
-
-@ssi_included
-def fragment_short(request, pk):
-    fragment = get_object_or_404(models.Fragment, pk=pk)
-    return render(request, 'catalogue/fragment_short.html', {'fragment': fragment})
-
-
-@ssi_included
-def fragment_promo(request, pk):
-    fragment = get_object_or_404(models.Fragment, pk=pk)
-    return render(request, 'catalogue/fragment_promo.html', {'fragment': fragment})
-
-
-@ssi_included
-def tag_box(request, pk):
-    tag = get_object_or_404(models.Tag, pk=pk)
-    assert tag.category != 'set'
-
-    return render(request, 'catalogue/tag_box.html', {
-        'tag': tag,
-    })
-
-
-@ssi_included
-def collection_box(request, pk):
-    obj = get_object_or_404(models.Collection, pk=pk)
-
-    return render(request, 'catalogue/collection_box.html', {
-        'obj': obj,
-    })
-
-
 def tag_catalogue(request, category):
     if category == 'theme':
 def tag_catalogue(request, category):
     if category == 'theme':
-        tags = models.Tag.objects.usage_for_model(
-            models.Fragment, counts=True).filter(category='theme')
+        tags = Tag.objects.usage_for_model(
+            Fragment, counts=True).filter(category='theme')
     else:
         tags = list(get_top_level_related_tags((), categories=(category,)))
 
     else:
         tags = list(get_top_level_related_tags((), categories=(category,)))
 
-    if len(tags) > 3:
-        best = random.sample(tags, 3)
+    described_tags = [tag for tag in tags if tag.description]
+
+    if len(described_tags) > 4:
+        best = random.sample(described_tags, 4)
     else:
     else:
-        best = tags
+        best = described_tags
 
     return render(request, 'catalogue/tag_catalogue.html', {
         'tags': tags,
         'best': best,
         'title': constants.CATEGORIES_NAME_PLURAL[category],
         'whole_category': constants.WHOLE_CATEGORY[category],
 
     return render(request, 'catalogue/tag_catalogue.html', {
         '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):
     })
 
 
 def collections(request):
-    objects = models.Collection.objects.all()
+    objects = Collection.objects.filter(listed=True)
 
     if len(objects) > 3:
 
     if len(objects) > 3:
-        best = random.sample(objects, 3)
+        best = random.sample(list(objects), 4)
     else:
         best = objects
 
     return render(request, 'catalogue/collections.html', {
         'objects': objects,
         'best': best,
     else:
         best = objects
 
     return render(request, 'catalogue/collections.html', {
         'objects': objects,
         'best': best,
+        'active_menu_item': 'collections'
     })
     })
+
+
+def ridero_cover(request, slug):
+    from librarian.cover import make_cover
+    wldoc = Book.objects.get(slug=slug).wldocument()
+    cover = make_cover(wldoc.book_info, width=980, bleed=20, format='PNG')
+    response = HttpResponse(content_type="image/png")
+    cover.save(response)
+    return response
+
+
+def get_isbn(request, book_format, slug):
+    book = Book.objects.get(slug=slug)
+    return HttpResponse(book.get_extra_info_json().get('isbn_%s' % book_format))