src/catalogue/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 collections import OrderedDict
   6 import random
   7
   8 from django.conf import settings
   9 from django.http.response import HttpResponseForbidden
  10 from django.template import RequestContext
  11 from django.template.loader import render_to_string
  12 from django.shortcuts import render_to_response, get_object_or_404, render, redirect
  13 from django.http import HttpResponse, HttpResponseRedirect, Http404, HttpResponsePermanentRedirect
  14 from django.core.urlresolvers import reverse
  15 from django.db.models import Q, QuerySet
  16 from django.contrib.auth.decorators import login_required, user_passes_test
  17 from django.utils.http import urlquote_plus
  18 from django.utils import translation
  19 from django.utils.translation import ugettext as _, ugettext_lazy
  20
  21 from ajaxable.utils import AjaxableFormView
  22 from pdcounter import views as pdcounter_views
  23 from picture.models import Picture, PictureArea
  24 from ssify import ssi_included, ssi_expect, SsiVariable as Var
  25 from catalogue import constants
  26 from catalogue import forms
  27 from catalogue.helpers import get_top_level_related_tags
  28 from catalogue.models import Book, Collection, Tag, Fragment
  29 from catalogue.utils import split_tags, is_subscribed
  30 from catalogue.models.tag import prefetch_relations
  31 from wolnelektury.utils import is_crawler
  32
  33 staff_required = user_passes_test(lambda user: user.is_staff)
  34
  35
  36 def catalogue(request):
  37     return render(request, 'catalogue/catalogue.html', {
  38         'books': Book.objects.filter(parent=None),
  39         'pictures': Picture.objects.all(),
  40         'collections': Collection.objects.all(),
  41         'active_menu_item': 'all_works',
  42     })
  43
  44
  45 def book_list(request, filters=None, template_name='catalogue/book_list.html',
  46               nav_template_name='catalogue/snippets/book_list_nav.html',
  47               list_template_name='catalogue/snippets/book_list.html'):
  48     """ generates a listing of all books, optionally filtered """
  49     books_by_author, orphans, books_by_parent = Book.book_list(filters)
  50     books_nav = OrderedDict()
  51     for tag in books_by_author:
  52         if books_by_author[tag]:
  53             books_nav.setdefault(tag.sort_key[0], []).append(tag)
  54     # WTF: dlaczego nie include?
  55     return render_to_response(template_name, {
  56         'rendered_nav': render_to_string(nav_template_name, {'books_nav': books_nav}),
  57         'rendered_book_list': render_to_string(list_template_name, {
  58             'books_by_author': books_by_author,
  59             'orphans': orphans,
  60             'books_by_parent': books_by_parent,
  61         })
  62     }, context_instance=RequestContext(request))
  63
  64
  65 def daisy_list(request):
  66     return book_list(request, Q(media__type='daisy'), template_name='catalogue/daisy_list.html')
  67
  68
  69 def collection(request, slug):
  70     coll = get_object_or_404(Collection, slug=slug)
  71     return render(request, 'catalogue/collection.html', {'collection': coll})
  72
  73
  74 def differentiate_tags(request, tags, ambiguous_slugs):
  75     beginning = '/'.join(tag.url_chunk for tag in tags)
  76     unparsed = '/'.join(ambiguous_slugs[1:])
  77     options = []
  78     for tag in Tag.objects.filter(slug=ambiguous_slugs[0]):
  79         options.append({
  80             'url_args': '/'.join((beginning, tag.url_chunk, unparsed)).strip('/'),
  81             'tags': [tag]
  82         })
  83     return render_to_response(
  84         'catalogue/differentiate_tags.html', {'tags': tags, 'options': options, 'unparsed': ambiguous_slugs[1:]},
  85         context_instance=RequestContext(request))
  86
  87
  88 def object_list(request, objects, fragments=None, related_tags=None, tags=None, list_type='books', extra=None):
  89     if not tags:
  90         tags = []
  91     tag_ids = [tag.pk for tag in tags]
  92
  93     related_tag_lists = []
  94     if related_tags:
  95         related_tag_lists.append(related_tags)
  96     else:
  97         related_tag_lists.append(
  98             Tag.objects.usage_for_queryset(objects, counts=True).exclude(category='set').exclude(pk__in=tag_ids))
  99     if not (extra and extra.get('theme_is_set')):
 100         if fragments is None:
 101             if list_type == 'gallery':
 102                 fragments = PictureArea.objects.filter(picture__in=objects)
 103             else:
 104                 fragments = Fragment.objects.filter(book__in=objects)
 105         related_tag_lists.append(
 106             Tag.objects.usage_for_queryset(fragments, counts=True).filter(category='theme').exclude(pk__in=tag_ids)
 107             .only('name', 'sort_key', 'category', 'slug'))
 108         if isinstance(objects, QuerySet):
 109             objects = prefetch_relations(objects, 'author')
 110
 111     categories = split_tags(*related_tag_lists)
 112
 113     objects = list(objects)
 114
 115     if not objects and len(tags) == 1 and list_type == 'books':
 116         if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
 117             return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
 118
 119     if len(objects) > 3:
 120         best = random.sample(objects, 3)
 121     else:
 122         best = objects
 123
 124     result = {
 125         'object_list': objects,
 126         'categories': categories,
 127         'list_type': list_type,
 128         'tags': tags,
 129
 130         'formats_form': forms.DownloadFormatsForm(),
 131         'best': best,
 132         'active_menu_item': list_type,
 133     }
 134     if extra:
 135         result.update(extra)
 136     return render_to_response(
 137         'catalogue/tagged_object_list.html', result,
 138         context_instance=RequestContext(request))
 139
 140
 141 def literature(request):
 142     books = Book.objects.filter(parent=None)
 143
 144     # last_published = Book.objects.exclude(cover_thumb='').filter(parent=None).order_by('-created_at')[:20]
 145     # most_popular = Book.objects.exclude(cover_thumb='')\
 146     #                    .order_by('-popularity__count', 'sort_key_author', 'sort_key')[:20]
 147     return object_list(request, books, related_tags=get_top_level_related_tags([]))
 148     # extra={
 149     #     'last_published': last_published,
 150     #     'most_popular': most_popular,
 151     # })
 152
 153
 154 def gallery(request):
 155     return object_list(request, Picture.objects.all(), list_type='gallery')
 156
 157
 158 def audiobooks(request):
 159     audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
 160     return object_list(request, audiobooks, list_type='audiobooks', extra={
 161         'daisy': Book.objects.filter(media__type='daisy').distinct(),
 162     })
 163
 164
 165 class ResponseInstead(Exception):
 166     def __init__(self, response):
 167         super(ResponseInstead, self).__init__()
 168         self.response = response
 169
 170
 171 def analyse_tags(request, tag_str):
 172     try:
 173         tags = Tag.get_tag_list(tag_str)
 174     except Tag.DoesNotExist:
 175         # Perhaps the user is asking about an author in Public Domain
 176         # counter (they are not represented in tags)
 177         chunks = tag_str.split('/')
 178         if len(chunks) == 2 and chunks[0] == 'autor':
 179             raise ResponseInstead(pdcounter_views.author_detail(request, chunks[1]))
 180         else:
 181             raise Http404
 182     except Tag.MultipleObjectsReturned, e:
 183         # Ask the user to disambiguate
 184         raise ResponseInstead(differentiate_tags(request, e.tags, e.ambiguous_slugs))
 185     except Tag.UrlDeprecationWarning, e:
 186         raise ResponseInstead(HttpResponsePermanentRedirect(
 187             reverse('tagged_object_list', args=['/'.join(tag.url_chunk for tag in e.tags)])))
 188
 189     try:
 190         if len(tags) > settings.MAX_TAG_LIST:
 191             raise Http404
 192     except AttributeError:
 193         pass
 194
 195     return tags
 196
 197
 198 def theme_list(request, tags, list_type):
 199     shelf_tags = [tag for tag in tags if tag.category == 'set']
 200     fragment_tags = [tag for tag in tags if tag.category != 'set']
 201     if list_type == 'gallery':
 202         fragments = PictureArea.tagged.with_all(fragment_tags)
 203     else:
 204         fragments = Fragment.tagged.with_all(fragment_tags)
 205
 206     if shelf_tags:
 207         # TODO: Pictures on shelves not supported yet.
 208         books = Book.tagged.with_all(shelf_tags).order_by()
 209         fragments = fragments.filter(Q(book__in=books) | Q(book__ancestor__in=books))
 210
 211     if not fragments and len(tags) == 1 and list_type == 'books':
 212         if PictureArea.tagged.with_any(tags).exists() or Picture.tagged.with_any(tags).exists():
 213             return redirect('tagged_object_list_gallery', '/'.join(tag.url_chunk for tag in tags))
 214
 215     return object_list(request, fragments, tags=tags, list_type=list_type, extra={
 216         'theme_is_set': True,
 217         'active_menu_item': 'theme',
 218     })
 219
 220
 221 def tagged_object_list(request, tags, list_type):
 222     try:
 223         tags = analyse_tags(request, tags)
 224     except ResponseInstead as e:
 225         return e.response
 226
 227     if is_crawler(request) and len(tags) > 1:
 228         return HttpResponseForbidden('address removed from crawling. check robots.txt')
 229
 230     if list_type == 'gallery' and any(tag.category == 'set' for tag in tags):
 231         raise Http404
 232
 233     if any(tag.category in ('theme', 'thing') for tag in tags):
 234         return theme_list(request, tags, list_type=list_type)
 235
 236     if list_type == 'books':
 237         books = Book.tagged.with_all(tags)
 238
 239         if any(tag.category == 'set' for tag in tags):
 240             params = {'objects': books}
 241         else:
 242             params = {
 243                 'objects': Book.tagged_top_level(tags),
 244                 'fragments': Fragment.objects.filter(book__in=books),
 245                 'related_tags': get_top_level_related_tags(tags),
 246             }
 247     elif list_type == 'gallery':
 248         params = {'objects': Picture.tagged.with_all(tags)}
 249     elif list_type == 'audiobooks':
 250         audiobooks = Book.objects.filter(media__type__in=('mp3', 'ogg')).distinct()
 251         params = {
 252             'objects': Book.tagged.with_all(tags, audiobooks),
 253             'extra': {
 254                 'daisy': Book.tagged.with_all(tags, audiobooks.filter(media__type='daisy').distinct()),
 255             }
 256         }
 257     else:
 258         raise Http404
 259
 260     return object_list(request, tags=tags, list_type=list_type, **params)
 261
 262
 263 def book_fragments(request, slug, theme_slug):
 264     book = get_object_or_404(Book, slug=slug)
 265     theme = get_object_or_404(Tag, slug=theme_slug, category='theme')
 266     fragments = Fragment.tagged.with_all([theme]).filter(
 267         Q(book=book) | Q(book__ancestor=book))
 268
 269     return render_to_response('catalogue/book_fragments.html', {
 270         'book': book,
 271         'theme': theme,
 272         'fragments': fragments,
 273         'active_menu_item': 'books',
 274     }, context_instance=RequestContext(request))
 275
 276
 277 def book_detail(request, slug):
 278     try:
 279         book = Book.objects.get(slug=slug)
 280     except Book.DoesNotExist:
 281         return pdcounter_views.book_stub_detail(request, slug)
 282
 283     return render_to_response('catalogue/book_detail.html', {
 284         'book': book,
 285         'tags': book.tags.exclude(category__in=('set', 'theme')),
 286         'book_children': book.children.all().order_by('parent_number', 'sort_key'),
 287         'active_menu_item': 'books',
 288     }, context_instance=RequestContext(request))
 289
 290
 291 # używane w publicznym interfejsie
 292 def player(request, slug):
 293     book = get_object_or_404(Book, slug=slug)
 294     if not book.has_media('mp3'):
 295         raise Http404
 296
 297     audiobooks, projects = book.get_audiobooks()
 298
 299     return render_to_response('catalogue/player.html', {
 300         'book': book,
 301         'audiobook': '',
 302         'audiobooks': audiobooks,
 303         'projects': projects,
 304     }, context_instance=RequestContext(request))
 305
 306
 307 def book_text(request, slug):
 308     book = get_object_or_404(Book, slug=slug)
 309
 310     if book.preview and not is_subscribed(request.user):
 311         return HttpResponseRedirect(book.get_absolute_url())
 312
 313     if not book.has_html_file():
 314         raise Http404
 315     return render_to_response('catalogue/book_text.html', {'book': book}, context_instance=RequestContext(request))
 316
 317
 318 # =========
 319 # = Admin =
 320 # =========
 321 @login_required
 322 @staff_required
 323 def import_book(request):
 324     """docstring for import_book"""
 325     book_import_form = forms.BookImportForm(request.POST, request.FILES)
 326     if book_import_form.is_valid():
 327         try:
 328             book_import_form.save()
 329         except:
 330             import sys
 331             import pprint
 332             import traceback
 333             info = sys.exc_info()
 334             exception = pprint.pformat(info[1])
 335             tb = '\n'.join(traceback.format_tb(info[2]))
 336             return HttpResponse(
 337                     _("An error occurred: %(exception)s\n\n%(tb)s") % {'exception': exception, 'tb': tb},
 338                     mimetype='text/plain')
 339         return HttpResponse(_("Book imported successfully"))
 340     else:
 341         return HttpResponse(_("Error importing file: %r") % book_import_form.errors)
 342
 343
 344 # info views for API
 345
 346 def book_info(request, book_id, lang='pl'):
 347     book = get_object_or_404(Book, id=book_id)
 348     # set language by hand
 349     translation.activate(lang)
 350     return render_to_response('catalogue/book_info.html', {'book': book}, context_instance=RequestContext(request))
 351
 352
 353 def tag_info(request, tag_id):
 354     tag = get_object_or_404(Tag, id=tag_id)
 355     return HttpResponse(tag.description)
 356
 357
 358 def embargo_link(request, format_, slug):
 359     book = get_object_or_404(Book, slug=slug)
 360     if format_ not in Book.formats:
 361         raise Http404
 362     media_file = book.get_media(format_)
 363     if not book.preview:
 364         return HttpResponseRedirect(media_file.url)
 365     if not is_subscribed(request.user):
 366         return HttpResponseRedirect(book.get_absolute_url())
 367     return HttpResponse(media_file, content_type=constants.EBOOK_CONTENT_TYPES[format_])
 368
 369
 370 def download_zip(request, format, slug=None):
 371     if format in Book.ebook_formats:
 372         url = Book.zip_format(format)
 373     elif format in ('mp3', 'ogg') and slug is not None:
 374         book = get_object_or_404(Book, slug=slug)
 375         url = book.zip_audiobooks(format)
 376     else:
 377         raise Http404('No format specified for zip package')
 378     return HttpResponseRedirect(urlquote_plus(settings.MEDIA_URL + url, safe='/?='))
 379
 380
 381 class CustomPDFFormView(AjaxableFormView):
 382     form_class = forms.CustomPDFForm
 383     title = ugettext_lazy('Download custom PDF')
 384     submit = ugettext_lazy('Download')
 385     template = 'catalogue/custom_pdf_form.html'
 386     honeypot = True
 387
 388     def __call__(self, *args, **kwargs):
 389         if settings.NO_CUSTOM_PDF:
 390             raise Http404('Custom PDF is disabled')
 391         return super(CustomPDFFormView, self).__call__(*args, **kwargs)
 392
 393     def form_args(self, request, obj):
 394         """Override to parse view args and give additional args to the form."""
 395         return (obj,), {}
 396
 397     def validate_object(self, obj, request):
 398         book = obj
 399         if book.preview and not is_subscribed(request.user):
 400             return HttpResponseRedirect(book.get_absolute_url())
 401         return super(CustomPDFFormView, self).validate_object(obj, request)
 402
 403     def get_object(self, request, slug, *args, **kwargs):
 404         book = get_object_or_404(Book, slug=slug)
 405         return book
 406
 407     def context_description(self, request, obj):
 408         return obj.pretty_title()
 409
 410
 411 ####
 412 # Includes
 413 ####
 414
 415
 416 @ssi_included
 417 def book_mini(request, pk, with_link=True):
 418     # book = get_object_or_404(Book, pk=pk)
 419     try:
 420         book = Book.objects.only('cover_thumb', 'title', 'language', 'slug').get(pk=pk)
 421     except Book.DoesNotExist:
 422         raise Http404
 423     return render(request, 'catalogue/book_mini_box.html', {
 424         'book': book,
 425         'no_link': not with_link,
 426     })
 427
 428
 429 @ssi_included(get_ssi_vars=lambda pk: (lambda ipk: (
 430         ('ssify.get_csrf_token',),
 431         ('social_tags.likes_book', (ipk,)),
 432         ('social_tags.book_shelf_tags', (ipk,)),
 433     ))(ssi_expect(pk, int)))
 434 def book_short(request, pk):
 435     book = get_object_or_404(Book, pk=pk)
 436
 437     return render(request, 'catalogue/book_short.html', {
 438         'book': book,
 439     })
 440
 441
 442 @ssi_included(
 443     get_ssi_vars=lambda pk: book_short.get_ssi_vars(pk) +
 444     (lambda ipk: (
 445         ('social_tags.choose_cite', [ipk]),
 446         ('catalogue_tags.choose_fragment', [ipk], {
 447             'unless': Var('social_tags.choose_cite', [ipk])}),
 448     ))(ssi_expect(pk, int)))
 449 def book_wide(request, pk):
 450     book = get_object_or_404(Book, pk=pk)
 451
 452     return render(request, 'catalogue/book_wide.html', {
 453         'book': book,
 454     })
 455
 456
 457 @ssi_included
 458 def fragment_short(request, pk):
 459     fragment = get_object_or_404(Fragment, pk=pk)
 460     return render(request, 'catalogue/fragment_short.html', {'fragment': fragment})
 461
 462
 463 @ssi_included
 464 def fragment_promo(request, pk):
 465     fragment = get_object_or_404(Fragment, pk=pk)
 466     return render(request, 'catalogue/fragment_promo.html', {'fragment': fragment})
 467
 468
 469 @ssi_included
 470 def tag_box(request, pk):
 471     tag = get_object_or_404(Tag, pk=pk)
 472     assert tag.category != 'set'
 473
 474     return render(request, 'catalogue/tag_box.html', {
 475         'tag': tag,
 476     })
 477
 478
 479 @ssi_included
 480 def collection_box(request, pk):
 481     collection = get_object_or_404(Collection, pk=pk)
 482
 483     return render(request, 'catalogue/collection_box.html', {
 484         'collection': collection,
 485     })
 486
 487
 488 def tag_catalogue(request, category):
 489     if category == 'theme':
 490         tags = Tag.objects.usage_for_model(
 491             Fragment, counts=True).filter(category='theme')
 492     else:
 493         tags = list(get_top_level_related_tags((), categories=(category,)))
 494
 495     described_tags = [tag for tag in tags if tag.description]
 496
 497     if len(described_tags) > 4:
 498         best = random.sample(described_tags, 4)
 499     else:
 500         best = described_tags
 501
 502     return render(request, 'catalogue/tag_catalogue.html', {
 503         'tags': tags,
 504         'best': best,
 505         'title': constants.CATEGORIES_NAME_PLURAL[category],
 506         'whole_category': constants.WHOLE_CATEGORY[category],
 507         'active_menu_item': 'theme' if category == 'theme' else None,
 508     })
 509
 510
 511 def collections(request):
 512     objects = Collection.objects.all()
 513
 514     if len(objects) > 3:
 515         best = random.sample(objects, 3)
 516     else:
 517         best = objects
 518
 519     return render(request, 'catalogue/collections.html', {
 520         'objects': objects,
 521         'best': best,
 522     })
 523
 524
 525 def ridero_cover(request, slug):
 526     from librarian.cover import make_cover
 527     wldoc = Book.objects.get(slug=slug).wldocument()
 528     cover = make_cover(wldoc.book_info, width=980, bleed=20, format='PNG')
 529     response = HttpResponse(content_type="image/png")
 530     cover.save(response)
 531     return response
 532
 533
 534 def get_isbn(request, book_format, slug):
 535     book = Book.objects.get(slug=slug)
 536     return HttpResponse(book.extra_info.get('isbn_%s' % book_format))