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