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, Image, BookPublishRecord,
  27         ChunkPublishRecord, ImagePublishRecord)
  28 from catalogue.tasks import publishable_error
  29
  30 #
  31 # Quick hack around caching problems, TODO: use ETags
  32 #
  33 from django.views.decorators.cache import never_cache
  34
  35 logger = logging.getLogger("fnp.catalogue")
  36
  37
  38 @active_tab('all')
  39 @never_cache
  40 def document_list(request):
  41     return render(request, 'catalogue/document_list.html')
  42
  43
  44 @active_tab('images')
  45 @never_cache
  46 def image_list(request, user=None):
  47     return render(request, 'catalogue/image_list.html')
  48
  49
  50 @never_cache
  51 def user(request, username):
  52     user = get_object_or_404(User, username=username)
  53     return render(request, 'catalogue/user_page.html', {"viewed_user": user})
  54
  55
  56 @login_required
  57 @active_tab('my')
  58 @never_cache
  59 def my(request):
  60     return render(request, 'catalogue/my_page.html', {
  61         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  62                         key=lambda x: x[1]['time'], reverse=True),
  63
  64         "logout_to": '/',
  65         })
  66
  67
  68 @active_tab('users')
  69 def users(request):
  70     return direct_to_template(request, 'catalogue/user_list.html', extra_context={
  71         'users': User.objects.all().annotate(count=Count('chunk')).order_by(
  72             '-count', 'last_name', 'first_name'),
  73     })
  74
  75
  76 @active_tab('activity')
  77 def activity(request, isodate=None):
  78     today = date.today()
  79     try:
  80         day = helpers.parse_isodate(isodate)
  81     except ValueError:
  82         day = today
  83
  84     if day > today:
  85         raise Http404
  86     if day != today:
  87         next_day = day + timedelta(1)
  88     prev_day = day - timedelta(1)
  89
  90     return render(request, 'catalogue/activity.html', locals())
  91
  92
  93 @never_cache
  94 def logout_then_redirect(request):
  95     auth.logout(request)
  96     return http.HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
  97
  98
  99 @permission_required('catalogue.add_book')
 100 @active_tab('create')
 101 def create_missing(request, slug=None):
 102     if slug is None:
 103         slug = ''
 104     slug = slug.replace(' ', '-')
 105
 106     if request.method == "POST":
 107         form = forms.DocumentCreateForm(request.POST, request.FILES)
 108         if form.is_valid():
 109
 110             if request.user.is_authenticated():
 111                 creator = request.user
 112             else:
 113                 creator = None
 114             book = Book.create(
 115                 text=form.cleaned_data['text'],
 116                 creator=creator,
 117                 slug=form.cleaned_data['slug'],
 118                 title=form.cleaned_data['title'],
 119                 gallery=form.cleaned_data['gallery'],
 120             )
 121
 122             return http.HttpResponseRedirect(reverse("catalogue_book", args=[book.slug]))
 123     else:
 124         form = forms.DocumentCreateForm(initial={
 125                 "slug": slug,
 126                 "title": slug.replace('-', ' ').title(),
 127                 "gallery": slug,
 128         })
 129
 130     return direct_to_template(request, "catalogue/document_create_missing.html", extra_context={
 131         "slug": slug,
 132         "form": form,
 133
 134         "logout_to": '/',
 135     })
 136
 137
 138 @permission_required('catalogue.add_book')
 139 @active_tab('upload')
 140 def upload(request):
 141     if request.method == "POST":
 142         form = forms.DocumentsUploadForm(request.POST, request.FILES)
 143         if form.is_valid():
 144             import slughifi
 145
 146             if request.user.is_authenticated():
 147                 creator = request.user
 148             else:
 149                 creator = None
 150
 151             zip = form.cleaned_data['zip']
 152             skipped_list = []
 153             ok_list = []
 154             error_list = []
 155             slugs = {}
 156             existing = [book.slug for book in Book.objects.all()]
 157             for filename in zip.namelist():
 158                 if filename[-1] == '/':
 159                     continue
 160                 title = os.path.basename(filename)[:-4]
 161                 slug = slughifi(title)
 162                 if not (slug and filename.endswith('.xml')):
 163                     skipped_list.append(filename)
 164                 elif slug in slugs:
 165                     error_list.append((filename, slug, _('Slug already used for %s' % slugs[slug])))
 166                 elif slug in existing:
 167                     error_list.append((filename, slug, _('Slug already used in repository.')))
 168                 else:
 169                     try:
 170                         zip.read(filename).decode('utf-8') # test read
 171                         ok_list.append((filename, slug, title))
 172                     except UnicodeDecodeError:
 173                         error_list.append((filename, title, _('File should be UTF-8 encoded.')))
 174                     slugs[slug] = filename
 175
 176             if not error_list:
 177                 for filename, slug, title in ok_list:
 178                     book = Book.create(
 179                         text=zip.read(filename).decode('utf-8'),
 180                         creator=creator,
 181                         slug=slug,
 182                         title=title,
 183                     )
 184
 185             return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 186                 "form": form,
 187                 "ok_list": ok_list,
 188                 "skipped_list": skipped_list,
 189                 "error_list": error_list,
 190
 191                 "logout_to": '/',
 192             })
 193     else:
 194         form = forms.DocumentsUploadForm()
 195
 196     return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 197         "form": form,
 198
 199         "logout_to": '/',
 200     })
 201
 202
 203 @never_cache
 204 def book_xml(request, slug):
 205     book = get_object_or_404(Book, slug=slug)
 206     if not book.accessible(request):
 207         return HttpResponseForbidden("Not authorized.")
 208     xml = book.materialize()
 209
 210     response = http.HttpResponse(xml, content_type='application/xml', mimetype='application/wl+xml')
 211     response['Content-Disposition'] = 'attachment; filename=%s.xml' % slug
 212     return response
 213
 214
 215 @never_cache
 216 def book_txt(request, slug):
 217     book = get_object_or_404(Book, slug=slug)
 218     if not book.accessible(request):
 219         return HttpResponseForbidden("Not authorized.")
 220     xml = book.materialize()
 221     output = StringIO()
 222     # errors?
 223
 224     import librarian.text
 225     librarian.text.transform(StringIO(xml), output)
 226     text = output.getvalue()
 227     response = http.HttpResponse(text, content_type='text/plain', mimetype='text/plain')
 228     response['Content-Disposition'] = 'attachment; filename=%s.txt' % slug
 229     return response
 230
 231
 232 @never_cache
 233 def book_html(request, slug):
 234     book = get_object_or_404(Book, slug=slug)
 235     if not book.accessible(request):
 236         return HttpResponseForbidden("Not authorized.")
 237     xml = book.materialize()
 238     output = StringIO()
 239     # errors?
 240
 241     import librarian.html
 242     librarian.html.transform(StringIO(xml), output, parse_dublincore=False,
 243                              flags=['full-page'])
 244     html = output.getvalue()
 245     response = http.HttpResponse(html, content_type='text/html', mimetype='text/html')
 246     return response
 247
 248
 249 @never_cache
 250 def book_pdf(request, slug):
 251     book = get_object_or_404(Book, slug=slug)
 252     if not book.accessible(request):
 253         return HttpResponseForbidden("Not authorized.")
 254
 255     from tempfile import NamedTemporaryFile
 256     from os import unlink
 257     from librarian import pdf
 258     from catalogue.ebook_utils import RedakcjaDocProvider, serve_file
 259
 260     xml = book.materialize()
 261     xml_file = NamedTemporaryFile()
 262     xml_file.write(xml.encode('utf-8'))
 263     xml_file.flush()
 264
 265     try:
 266         pdf_file = NamedTemporaryFile(delete=False)
 267         pdf.transform(RedakcjaDocProvider(publishable=True),
 268                   file_path=xml_file.name,
 269                   output_file=pdf_file,
 270                   )
 271         return serve_file(pdf_file.name, book.slug + '.pdf', 'application/pdf')
 272     finally:
 273         unlink(pdf_file.name)
 274
 275
 276 @never_cache
 277 def book_epub(request, slug):
 278     book = get_object_or_404(Book, slug=slug)
 279     if not book.accessible(request):
 280         return HttpResponseForbidden("Not authorized.")
 281
 282     from StringIO import StringIO
 283     from tempfile import NamedTemporaryFile
 284     from librarian import epub
 285     from catalogue.ebook_utils import RedakcjaDocProvider
 286
 287     xml = book.materialize()
 288     xml_file = NamedTemporaryFile()
 289     xml_file.write(xml.encode('utf-8'))
 290     xml_file.flush()
 291
 292     epub_file = StringIO()
 293     epub.transform(RedakcjaDocProvider(publishable=True),
 294             file_path=xml_file.name,
 295             output_file=epub_file)
 296     response = HttpResponse(mimetype='application/epub+zip')
 297     response['Content-Disposition'] = 'attachment; filename=%s' % book.slug + '.epub'
 298     response.write(epub_file.getvalue())
 299     return response
 300
 301
 302 @never_cache
 303 def revision(request, slug, chunk=None):
 304     try:
 305         doc = Chunk.get(slug, chunk)
 306     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 307         raise Http404
 308     if not doc.book.accessible(request):
 309         return HttpResponseForbidden("Not authorized.")
 310     return http.HttpResponse(str(doc.revision()))
 311
 312
 313 def book(request, slug):
 314     book = get_object_or_404(Book, slug=slug)
 315     if not book.accessible(request):
 316         return HttpResponseForbidden("Not authorized.")
 317
 318     if request.user.has_perm('catalogue.change_book'):
 319         if request.method == "POST":
 320             form = forms.BookForm(request.POST, instance=book)
 321             if form.is_valid():
 322                 form.save()
 323                 return http.HttpResponseRedirect(book.get_absolute_url())
 324         else:
 325             form = forms.BookForm(instance=book)
 326             editable = True
 327     else:
 328         form = forms.ReadonlyBookForm(instance=book)
 329         editable = False
 330
 331     publish_error = publishable_error(book)
 332     publishable = publish_error is None
 333
 334     return direct_to_template(request, "catalogue/book_detail.html", extra_context={
 335         "book": book,
 336         "publishable": publishable,
 337         "publishable_error": publish_error,
 338         "form": form,
 339         "editable": editable,
 340     })
 341
 342
 343 def image(request, slug):
 344     image = get_object_or_404(Image, slug=slug)
 345     if not image.accessible(request):
 346         return HttpResponseForbidden("Not authorized.")
 347
 348     if request.user.has_perm('catalogue.change_image'):
 349         if request.method == "POST":
 350             form = forms.ImageForm(request.POST, instance=image)
 351             if form.is_valid():
 352                 form.save()
 353                 return http.HttpResponseRedirect(image.get_absolute_url())
 354         else:
 355             form = forms.ImageForm(instance=image)
 356         editable = True
 357     else:
 358         form = forms.ReadonlyImageForm(instance=image)
 359         editable = False
 360
 361     publish_error = publishable_error(image)
 362     publishable = publish_error is None
 363
 364     return direct_to_template(request, "catalogue/image_detail.html", extra_context={
 365         "object": image,
 366         "publishable": publishable,
 367         "publishable_error": publish_error,
 368         "form": form,
 369         "editable": editable,
 370     })
 371
 372
 373 @permission_required('catalogue.add_chunk')
 374 def chunk_add(request, slug, chunk):
 375     try:
 376         doc = Chunk.get(slug, chunk)
 377     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 378         raise Http404
 379     if not doc.book.accessible(request):
 380         return HttpResponseForbidden("Not authorized.")
 381
 382     if request.method == "POST":
 383         form = forms.ChunkAddForm(request.POST, instance=doc)
 384         if form.is_valid():
 385             if request.user.is_authenticated():
 386                 creator = request.user
 387             else:
 388                 creator = None
 389             doc.split(creator=creator,
 390                 slug=form.cleaned_data['slug'],
 391                 title=form.cleaned_data['title'],
 392                 gallery_start=form.cleaned_data['gallery_start'],
 393                 user=form.cleaned_data['user'],
 394                 stage=form.cleaned_data['stage']
 395             )
 396
 397             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 398     else:
 399         form = forms.ChunkAddForm(initial={
 400                 "slug": str(doc.number + 1),
 401                 "title": "cz. %d" % (doc.number + 1, ),
 402         })
 403
 404     return direct_to_template(request, "catalogue/chunk_add.html", extra_context={
 405         "chunk": doc,
 406         "form": form,
 407     })
 408
 409
 410 def chunk_edit(request, slug, chunk):
 411     try:
 412         doc = Chunk.get(slug, chunk)
 413     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 414         raise Http404
 415     if not doc.book.accessible(request):
 416         return HttpResponseForbidden("Not authorized.")
 417
 418     if request.method == "POST":
 419         form = forms.ChunkForm(request.POST, instance=doc)
 420         if form.is_valid():
 421             form.save()
 422             go_next = request.GET.get('next', None)
 423             if go_next:
 424                 go_next = urlquote_plus(unquote(iri_to_uri(go_next)), safe='/?=&')
 425             else:
 426                 go_next = doc.book.get_absolute_url()
 427             return http.HttpResponseRedirect(go_next)
 428     else:
 429         form = forms.ChunkForm(instance=doc)
 430
 431     referer = request.META.get('HTTP_REFERER')
 432     if referer:
 433         parts = urlsplit(referer)
 434         parts = ['', ''] + list(parts[2:])
 435         go_next = urlquote_plus(urlunsplit(parts))
 436     else:
 437         go_next = ''
 438
 439     return direct_to_template(request, "catalogue/chunk_edit.html", extra_context={
 440         "chunk": doc,
 441         "form": form,
 442         "go_next": go_next,
 443     })
 444
 445
 446 @permission_required('catalogue.change_book')
 447 def book_append(request, slug):
 448     book = get_object_or_404(Book, slug=slug)
 449     if not book.accessible(request):
 450         return HttpResponseForbidden("Not authorized.")
 451
 452     if request.method == "POST":
 453         form = forms.BookAppendForm(book, request.POST)
 454         if form.is_valid():
 455             append_to = form.cleaned_data['append_to']
 456             append_to.append(book)
 457             return http.HttpResponseRedirect(append_to.get_absolute_url())
 458     else:
 459         form = forms.BookAppendForm(book)
 460     return direct_to_template(request, "catalogue/book_append_to.html", extra_context={
 461         "book": book,
 462         "form": form,
 463
 464         "logout_to": '/',
 465     })
 466
 467
 468 @require_POST
 469 @login_required
 470 def publish(request, slug):
 471     book = get_object_or_404(Book, slug=slug)
 472     if not book.accessible(request):
 473         return HttpResponseForbidden("Not authorized.")
 474
 475     try:
 476         book.publish(request.user)
 477     except NotAuthorizedError:
 478         return http.HttpResponseRedirect(reverse('apiclient_oauth'))
 479     except BaseException, e:
 480         return http.HttpResponse(e)
 481     else:
 482         return http.HttpResponseRedirect(book.get_absolute_url())
 483
 484
 485 @require_POST
 486 @login_required
 487 def publish_image(request, slug):
 488     image = get_object_or_404(Image, slug=slug)
 489     if not image.accessible(request):
 490         return HttpResponseForbidden("Not authorized.")
 491
 492     try:
 493         image.publish(request.user)
 494     except NotAuthorizedError:
 495         return http.HttpResponseRedirect(reverse('apiclient_oauth'))
 496     except BaseException, e:
 497         return http.HttpResponse(e)
 498     else:
 499         return http.HttpResponseRedirect(image.get_absolute_url())