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