apps/catalogue/views.py

   1 from datetime import datetime, date, timedelta
   2 import logging
   3 import os
   4 from StringIO import StringIO
   5 from urllib import unquote
   6 from urlparse import urlsplit, urlunsplit
   7
   8 from django.contrib import auth
   9 from django.contrib.auth.models import User
  10 from django.contrib.auth.decorators import login_required, permission_required
  11 from django.core.urlresolvers import reverse
  12 from django.db.models import Count, Q
  13 from django import http
  14 from django.http import Http404, HttpResponse, HttpResponseForbidden
  15 from django.shortcuts import get_object_or_404, render
  16 from django.utils.encoding import iri_to_uri
  17 from django.utils.http import urlquote_plus
  18 from django.utils.translation import ugettext_lazy as _
  19 from django.views.decorators.http import require_POST
  20 from django.views.generic.simple import direct_to_template
  21
  22 from apiclient import NotAuthorizedError
  23 from catalogue import forms
  24 from catalogue import helpers
  25 from catalogue.helpers import active_tab
  26 from catalogue.models import Book, Chunk, BookPublishRecord, ChunkPublishRecord
  27 from catalogue.tasks import publishable_error
  28
  29 #
  30 # Quick hack around caching problems, TODO: use ETags
  31 #
  32 from django.views.decorators.cache import never_cache
  33
  34 logger = logging.getLogger("fnp.catalogue")
  35
  36
  37 @active_tab('all')
  38 @never_cache
  39 def document_list(request):
  40     return render(request, 'catalogue/document_list.html')
  41
  42
  43 @never_cache
  44 def user(request, username):
  45     user = get_object_or_404(User, username=username)
  46     return render(request, 'catalogue/user_page.html', {"viewed_user": user})
  47
  48
  49 @login_required
  50 @active_tab('my')
  51 @never_cache
  52 def my(request):
  53     return render(request, 'catalogue/my_page.html', {
  54         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  55                         key=lambda x: x[1]['time'], reverse=True),
  56
  57         "logout_to": '/',
  58         })
  59
  60
  61 @active_tab('users')
  62 def users(request):
  63     return direct_to_template(request, 'catalogue/user_list.html', extra_context={
  64         'users': User.objects.all().annotate(count=Count('chunk')).order_by(
  65             '-count', 'last_name', 'first_name'),
  66     })
  67
  68
  69 @active_tab('activity')
  70 def activity(request, isodate=None):
  71     today = date.today()
  72     try:
  73         day = helpers.parse_isodate(isodate)
  74     except ValueError:
  75         day = today
  76
  77     if day > today:
  78         raise Http404
  79     if day != today:
  80         next_day = day + timedelta(1)
  81     prev_day = day - timedelta(1)
  82
  83     return render(request, 'catalogue/activity.html', locals())
  84
  85
  86 @never_cache
  87 def logout_then_redirect(request):
  88     auth.logout(request)
  89     return http.HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
  90
  91
  92 @permission_required('catalogue.add_book')
  93 @active_tab('create')
  94 def create_missing(request, slug=None):
  95     if slug is None:
  96         slug = ''
  97     slug = slug.replace(' ', '-')
  98
  99     if request.method == "POST":
 100         form = forms.DocumentCreateForm(request.POST, request.FILES)
 101         if form.is_valid():
 102
 103             if request.user.is_authenticated():
 104                 creator = request.user
 105             else:
 106                 creator = None
 107             book = Book.create(
 108                 text=form.cleaned_data['text'],
 109                 creator=creator,
 110                 slug=form.cleaned_data['slug'],
 111                 title=form.cleaned_data['title'],
 112                 gallery=form.cleaned_data['gallery'],
 113             )
 114
 115             return http.HttpResponseRedirect(reverse("catalogue_book", args=[book.slug]))
 116     else:
 117         form = forms.DocumentCreateForm(initial={
 118                 "slug": slug,
 119                 "title": slug.replace('-', ' ').title(),
 120                 "gallery": slug,
 121         })
 122
 123     return direct_to_template(request, "catalogue/document_create_missing.html", extra_context={
 124         "slug": slug,
 125         "form": form,
 126
 127         "logout_to": '/',
 128     })
 129
 130
 131 @permission_required('catalogue.add_book')
 132 @active_tab('upload')
 133 def upload(request):
 134     if request.method == "POST":
 135         form = forms.DocumentsUploadForm(request.POST, request.FILES)
 136         if form.is_valid():
 137             import slughifi
 138
 139             if request.user.is_authenticated():
 140                 creator = request.user
 141             else:
 142                 creator = None
 143
 144             zip = form.cleaned_data['zip']
 145             skipped_list = []
 146             ok_list = []
 147             error_list = []
 148             slugs = {}
 149             existing = [book.slug for book in Book.objects.all()]
 150             for filename in zip.namelist():
 151                 if filename[-1] == '/':
 152                     continue
 153                 title = os.path.basename(filename)[:-4]
 154                 slug = slughifi(title)
 155                 if not (slug and filename.endswith('.xml')):
 156                     skipped_list.append(filename)
 157                 elif slug in slugs:
 158                     error_list.append((filename, slug, _('Slug already used for %s' % slugs[slug])))
 159                 elif slug in existing:
 160                     error_list.append((filename, slug, _('Slug already used in repository.')))
 161                 else:
 162                     try:
 163                         zip.read(filename).decode('utf-8') # test read
 164                         ok_list.append((filename, slug, title))
 165                     except UnicodeDecodeError:
 166                         error_list.append((filename, title, _('File should be UTF-8 encoded.')))
 167                     slugs[slug] = filename
 168
 169             if not error_list:
 170                 for filename, slug, title in ok_list:
 171                     book = Book.create(
 172                         text=zip.read(filename).decode('utf-8'),
 173                         creator=creator,
 174                         slug=slug,
 175                         title=title,
 176                     )
 177
 178             return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 179                 "form": form,
 180                 "ok_list": ok_list,
 181                 "skipped_list": skipped_list,
 182                 "error_list": error_list,
 183
 184                 "logout_to": '/',
 185             })
 186     else:
 187         form = forms.DocumentsUploadForm()
 188
 189     return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 190         "form": form,
 191
 192         "logout_to": '/',
 193     })
 194
 195
 196 @never_cache
 197 def book_xml(request, slug):
 198     book = get_object_or_404(Book, slug=slug)
 199     if not book.accessible(request):
 200         return HttpResponseForbidden("Not authorized.")
 201     xml = book.materialize()
 202
 203     response = http.HttpResponse(xml, content_type='application/xml', mimetype='application/wl+xml')
 204     response['Content-Disposition'] = 'attachment; filename=%s.xml' % slug
 205     return response
 206
 207
 208 @never_cache
 209 def book_txt(request, slug):
 210     book = get_object_or_404(Book, slug=slug)
 211     if not book.accessible(request):
 212         return HttpResponseForbidden("Not authorized.")
 213     xml = book.materialize()
 214     output = StringIO()
 215     # errors?
 216
 217     import librarian.text
 218     librarian.text.transform(StringIO(xml), output)
 219     text = output.getvalue()
 220     response = http.HttpResponse(text, content_type='text/plain', mimetype='text/plain')
 221     response['Content-Disposition'] = 'attachment; filename=%s.txt' % slug
 222     return response
 223
 224
 225 @never_cache
 226 def book_html(request, slug):
 227     book = get_object_or_404(Book, slug=slug)
 228     if not book.accessible(request):
 229         return HttpResponseForbidden("Not authorized.")
 230     xml = book.materialize()
 231     output = StringIO()
 232     # errors?
 233
 234     import librarian.html
 235     librarian.html.transform(StringIO(xml), output, parse_dublincore=False,
 236                              flags=['full-page'])
 237     html = output.getvalue()
 238     response = http.HttpResponse(html, content_type='text/html', mimetype='text/html')
 239     return response
 240
 241
 242 @never_cache
 243 def book_pdf(request, slug):
 244     book = get_object_or_404(Book, slug=slug)
 245     if not book.accessible(request):
 246         return HttpResponseForbidden("Not authorized.")
 247
 248     from tempfile import NamedTemporaryFile
 249     from os import unlink
 250     from librarian import pdf
 251     from catalogue.ebook_utils import RedakcjaDocProvider, serve_file
 252
 253     xml = book.materialize()
 254     xml_file = NamedTemporaryFile()
 255     xml_file.write(xml.encode('utf-8'))
 256     xml_file.flush()
 257
 258     try:
 259         pdf_file = NamedTemporaryFile(delete=False)
 260         pdf.transform(RedakcjaDocProvider(),
 261                   file_path=xml_file.name,
 262                   output_file=pdf_file,
 263                   )
 264         return serve_file(pdf_file.name, book.slug + '.pdf', 'application/pdf')
 265     finally:
 266         unlink(pdf_file.name)
 267
 268
 269 @never_cache
 270 def book_epub(request, slug):
 271     book = get_object_or_404(Book, slug=slug)
 272     if not book.accessible(request):
 273         return HttpResponseForbidden("Not authorized.")
 274
 275     from StringIO import StringIO
 276     from tempfile import NamedTemporaryFile
 277     from librarian import epub
 278     from catalogue.ebook_utils import RedakcjaDocProvider
 279
 280     xml = book.materialize()
 281     xml_file = NamedTemporaryFile()
 282     xml_file.write(xml.encode('utf-8'))
 283     xml_file.flush()
 284
 285     epub_file = StringIO()
 286     epub.transform(RedakcjaDocProvider(), file_path=xml_file.name,
 287             output_file=epub_file)
 288     response = HttpResponse(mimetype='application/epub+zip')
 289     response['Content-Disposition'] = 'attachment; filename=%s' % book.slug + '.epub'
 290     response.write(epub_file.getvalue())
 291     return response
 292
 293
 294 @never_cache
 295 def revision(request, slug, chunk=None):
 296     try:
 297         doc = Chunk.get(slug, chunk)
 298     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 299         raise Http404
 300     if not doc.book.accessible(request):
 301         return HttpResponseForbidden("Not authorized.")
 302     return http.HttpResponse(str(doc.revision()))
 303
 304
 305 def book(request, slug):
 306     book = get_object_or_404(Book, slug=slug)
 307     if not book.accessible(request):
 308         return HttpResponseForbidden("Not authorized.")
 309
 310     if request.user.has_perm('catalogue.change_book'):
 311         if request.method == "POST":
 312             form = forms.BookForm(request.POST, instance=book)
 313             if form.is_valid():
 314                 form.save()
 315                 return http.HttpResponseRedirect(book.get_absolute_url())
 316         else:
 317             form = forms.BookForm(instance=book)
 318             editable = True
 319     else:
 320         form = forms.ReadonlyBookForm(instance=book)
 321         editable = False
 322
 323     publish_error = publishable_error(book)
 324     publishable = publish_error is None
 325
 326     return direct_to_template(request, "catalogue/book_detail.html", extra_context={
 327         "book": book,
 328         "publishable": publishable,
 329         "publishable_error": publish_error,
 330         "form": form,
 331         "editable": editable,
 332     })
 333
 334
 335 @permission_required('catalogue.add_chunk')
 336 def chunk_add(request, slug, chunk):
 337     try:
 338         doc = Chunk.get(slug, chunk)
 339     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 340         raise Http404
 341     if not doc.book.accessible(request):
 342         return HttpResponseForbidden("Not authorized.")
 343
 344     if request.method == "POST":
 345         form = forms.ChunkAddForm(request.POST, instance=doc)
 346         if form.is_valid():
 347             if request.user.is_authenticated():
 348                 creator = request.user
 349             else:
 350                 creator = None
 351             doc.split(creator=creator,
 352                 slug=form.cleaned_data['slug'],
 353                 title=form.cleaned_data['title'],
 354                 gallery_start=form.cleaned_data['gallery_start'],
 355                 user=form.cleaned_data['user'],
 356                 stage=form.cleaned_data['stage']
 357             )
 358
 359             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 360     else:
 361         form = forms.ChunkAddForm(initial={
 362                 "slug": str(doc.number + 1),
 363                 "title": "cz. %d" % (doc.number + 1, ),
 364         })
 365
 366     return direct_to_template(request, "catalogue/chunk_add.html", extra_context={
 367         "chunk": doc,
 368         "form": form,
 369     })
 370
 371
 372 def chunk_edit(request, slug, chunk):
 373     try:
 374         doc = Chunk.get(slug, chunk)
 375     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 376         raise Http404
 377     if not doc.book.accessible(request):
 378         return HttpResponseForbidden("Not authorized.")
 379
 380     if request.method == "POST":
 381         form = forms.ChunkForm(request.POST, instance=doc)
 382         if form.is_valid():
 383             form.save()
 384             go_next = request.GET.get('next', None)
 385             if go_next:
 386                 go_next = urlquote_plus(unquote(iri_to_uri(go_next)), safe='/?=&')
 387             else:
 388                 go_next = doc.book.get_absolute_url()
 389             return http.HttpResponseRedirect(go_next)
 390     else:
 391         form = forms.ChunkForm(instance=doc)
 392
 393     referer = request.META.get('HTTP_REFERER')
 394     if referer:
 395         parts = urlsplit(referer)
 396         parts = ['', ''] + list(parts[2:])
 397         go_next = urlquote_plus(urlunsplit(parts))
 398     else:
 399         go_next = ''
 400
 401     return direct_to_template(request, "catalogue/chunk_edit.html", extra_context={
 402         "chunk": doc,
 403         "form": form,
 404         "go_next": go_next,
 405     })
 406
 407
 408 @permission_required('catalogue.change_book')
 409 def book_append(request, slug):
 410     book = get_object_or_404(Book, slug=slug)
 411     if not book.accessible(request):
 412         return HttpResponseForbidden("Not authorized.")
 413
 414     if request.method == "POST":
 415         form = forms.BookAppendForm(book, request.POST)
 416         if form.is_valid():
 417             append_to = form.cleaned_data['append_to']
 418             append_to.append(book)
 419             return http.HttpResponseRedirect(append_to.get_absolute_url())
 420     else:
 421         form = forms.BookAppendForm(book)
 422     return direct_to_template(request, "catalogue/book_append_to.html", extra_context={
 423         "book": book,
 424         "form": form,
 425
 426         "logout_to": '/',
 427     })
 428
 429
 430 @require_POST
 431 @login_required
 432 def publish(request, slug):
 433     book = get_object_or_404(Book, slug=slug)
 434     if not book.accessible(request):
 435         return HttpResponseForbidden("Not authorized.")
 436
 437     try:
 438         book.publish(request.user)
 439     except NotAuthorizedError:
 440         return http.HttpResponseRedirect(reverse('apiclient_oauth'))
 441     except BaseException, e:
 442         return http.HttpResponse(e)
 443     else:
 444         return http.HttpResponseRedirect(book.get_absolute_url())