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