apps/catalogue/views.py

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