apps/wiki/views.py

   1 # -*- coding: utf-8 -*-
   2 from datetime import datetime
   3 import os
   4 import logging
   5 import urllib
   6 import json
   7
   8 from django.conf import settings
   9 from django.core.urlresolvers import reverse
  10 from django import http
  11 from django.http import Http404, HttpResponseForbidden
  12 from django.middleware.gzip import GZipMiddleware
  13 from django.utils.decorators import decorator_from_middleware
  14 from django.utils.encoding import smart_unicode
  15 from django.utils.formats import localize
  16 from django.utils.translation import ugettext as _
  17 from django.views.decorators.http import require_POST, require_GET
  18 from django.shortcuts import get_object_or_404, render
  19
  20 from catalogue.models import Book, Chunk, Template
  21 import nice_diff
  22 from wiki import forms
  23 from wiki.helpers import JSONResponse, JSONFormInvalid, ajax_require_permission
  24 from wiki.models import Theme
  25
  26 #
  27 # Quick hack around caching problems, TODO: use ETags
  28 #
  29 from django.views.decorators.cache import never_cache
  30
  31 logger = logging.getLogger("fnp.wiki")
  32
  33 MAX_LAST_DOCS = 10
  34
  35
  36 def get_history(chunk):
  37     changes = []
  38     for change in chunk.history():
  39         changes.append({
  40                 "version": change.revision,
  41                 "description": change.description,
  42                 "author": change.author_str(),
  43                 "date": localize(change.created_at),
  44                 "publishable": _("Publishable") + "\n" if change.publishable else "",
  45                 "tag": ',\n'.join(unicode(tag) for tag in change.tags.all()),
  46                 "published": (
  47                     _("Published") + ": " +
  48                     localize(change.publish_log.order_by('-book_record__timestamp')[0].book_record.timestamp)
  49                     if change.publish_log.exists() else ""),
  50             })
  51     return changes
  52
  53
  54 @never_cache
  55 # @login_required
  56 def editor(request, slug, chunk=None, template_name='wiki/bootstrap.html'):
  57     try:
  58         chunk = Chunk.get(slug, chunk)
  59     except Chunk.MultipleObjectsReturned:
  60         # TODO: choice page
  61         raise Http404
  62     except Chunk.DoesNotExist:
  63         if chunk is None:
  64             try:
  65                 book = Book.objects.get(slug=slug)
  66             except Book.DoesNotExist:
  67                 return http.HttpResponseRedirect(reverse("catalogue_create_missing", args=[slug]))
  68         else:
  69             raise Http404
  70     if not chunk.book.accessible(request):
  71         return HttpResponseForbidden("Not authorized.")
  72
  73     access_time = datetime.now()
  74     last_books = request.session.get("wiki_last_books", {})
  75     last_books[slug, chunk.slug] = {
  76         'time': access_time,
  77         'title': chunk.pretty_name(),
  78         }
  79
  80     if len(last_books) > MAX_LAST_DOCS:
  81         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
  82         del last_books[oldest_key]
  83     request.session['wiki_last_books'] = last_books
  84
  85     save_form = forms.DocumentTextSaveForm(user=request.user, chunk=chunk, prefix="textsave")
  86     try:
  87         version = int(request.GET.get('version', None))
  88     except:
  89         version = None
  90     if version:
  91         text = chunk.at_revision(version).materialize()
  92     else:
  93         text = chunk.materialize()
  94     return render(request, template_name, {
  95         'serialized_document_data': json.dumps({
  96             'document': text,
  97             'document_id': chunk.id,
  98             'title': chunk.book.title,
  99             'history': get_history(chunk),
 100             'version': version or chunk.revision(),
 101             'stage': chunk.stage.name if chunk.stage else None,
 102             'assignment': chunk.user.username if chunk.user else None
 103         }),
 104         'serialized_templates': json.dumps([
 105             {'id': t.id, 'name': t.name, 'content': t.content} for t in Template.objects.filter(is_partial=True)
 106         ]),
 107         'forms': {
 108             "text_save": save_form,
 109             "text_revert": forms.DocumentTextRevertForm(prefix="textrevert")
 110         },
 111         'tags': list(save_form.fields['stage_completed'].choices),
 112         'can_pubmark': request.user.has_perm('catalogue.can_pubmark'),
 113         'slug': chunk.book.slug
 114     })
 115
 116
 117 @require_GET
 118 def editor_readonly(request, slug, chunk=None, template_name='wiki/document_details_readonly.html'):
 119     try:
 120         chunk = Chunk.get(slug, chunk)
 121         revision = request.GET['revision']
 122     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist, KeyError):
 123         raise Http404
 124     if not chunk.book.accessible(request):
 125         return HttpResponseForbidden("Not authorized.")
 126
 127     access_time = datetime.now()
 128     last_books = request.session.get("wiki_last_books", {})
 129     last_books[slug, chunk.slug] = {
 130         'time': access_time,
 131         'title': chunk.book.title,
 132         }
 133
 134     if len(last_books) > MAX_LAST_DOCS:
 135         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
 136         del last_books[oldest_key]
 137     request.session['wiki_last_books'] = last_books
 138
 139     return render(request, template_name, {
 140         'chunk': chunk,
 141         'revision': revision,
 142         'readonly': True,
 143         'REDMINE_URL': settings.REDMINE_URL,
 144     })
 145
 146
 147 @never_cache
 148 @decorator_from_middleware(GZipMiddleware)
 149 def text(request, chunk_id):
 150     doc = get_object_or_404(Chunk, pk=chunk_id)
 151     if not doc.book.accessible(request):
 152         return HttpResponseForbidden("Not authorized.")
 153
 154     if request.method == 'POST':
 155         form = forms.DocumentTextSaveForm(request.POST, user=request.user, chunk=doc, prefix="textsave")
 156         if form.is_valid():
 157             form.save()
 158             parent_revision = form.cleaned_data['parent_revision']
 159             revision = doc.revision()
 160             return JSONResponse({
 161                 'text': doc.materialize() if parent_revision != revision else None,
 162                 'version': revision,
 163                 'stage': doc.stage.name if doc.stage else None,
 164                 'assignment': doc.user.username if doc.user else None
 165             })
 166         else:
 167             return JSONFormInvalid(form)
 168     else:
 169         revision = request.GET.get("revision", None)
 170
 171         try:
 172             revision = int(revision)
 173         except (ValueError, TypeError):
 174             revision = doc.revision()
 175
 176         if revision is not None:
 177             text = doc.at_revision(revision).materialize()
 178         else:
 179             text = ''
 180
 181         return JSONResponse({
 182             'text': text,
 183             'meta': {},
 184             'revision': revision,
 185         })
 186
 187
 188 @never_cache
 189 @require_POST
 190 def revert(request, chunk_id):
 191     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 192     if form.is_valid():
 193         doc = get_object_or_404(Chunk, pk=chunk_id)
 194         if not doc.book.accessible(request):
 195             return HttpResponseForbidden("Not authorized.")
 196
 197         revision = form.cleaned_data['revision']
 198
 199         comment = form.cleaned_data['comment']
 200         comment += "\n#revert to %s" % revision
 201
 202         if request.user.is_authenticated():
 203             author = request.user
 204         else:
 205             author = None
 206
 207         before = doc.revision()
 208         logger.info("Reverting %s to %s", chunk_id, revision)
 209         doc.at_revision(revision).revert(author=author, description=comment)
 210
 211         return JSONResponse({
 212             'document': doc.materialize() if before != doc.revision() else None,
 213             'version': doc.revision(),
 214         })
 215     else:
 216         return JSONFormInvalid(form)
 217
 218
 219 @never_cache
 220 def gallery(request, directory):
 221     try:
 222         base_url = ''.join((
 223                         smart_unicode(settings.MEDIA_URL),
 224                         smart_unicode(settings.IMAGE_DIR),
 225                         smart_unicode(directory)))
 226
 227         base_dir = os.path.join(
 228                     smart_unicode(settings.MEDIA_ROOT),
 229                     smart_unicode(settings.IMAGE_DIR),
 230                     smart_unicode(directory))
 231
 232         def map_to_url(filename):
 233             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 234
 235         def is_image(filename):
 236             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 237
 238         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 239         images.sort()
 240
 241         if not request.user.is_authenticated():
 242             return HttpResponseForbidden("Not authorized.")
 243
 244         return JSONResponse(images)
 245     except (IndexError, OSError):
 246         logger.exception("Unable to fetch gallery")
 247         raise http.Http404
 248
 249
 250 @never_cache
 251 def diff(request, chunk_id):
 252     revA = int(request.GET.get('from', 0))
 253     revB = int(request.GET.get('to', 0))
 254
 255     if revA > revB:
 256         revA, revB = revB, revA
 257
 258     if revB == 0:
 259         revB = None
 260
 261     doc = get_object_or_404(Chunk, pk=chunk_id)
 262     if not doc.book.accessible(request):
 263         return HttpResponseForbidden("Not authorized.")
 264
 265     # allow diff from the beginning
 266     if revA:
 267         docA = doc.at_revision(revA).materialize()
 268     else:
 269         docA = ""
 270     docB = doc.at_revision(revB).materialize()
 271
 272     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(), docB.splitlines(), context=3))
 273
 274
 275 @never_cache
 276 def revision(request, chunk_id):
 277     doc = get_object_or_404(Chunk, pk=chunk_id)
 278     if not doc.book.accessible(request):
 279         return HttpResponseForbidden("Not authorized.")
 280     return http.HttpResponse(str(doc.revision()))
 281
 282
 283 @never_cache
 284 def history(request, chunk_id):
 285     # TODO: pagination
 286     doc = get_object_or_404(Chunk, pk=chunk_id)
 287     if not doc.book.accessible(request):
 288         return HttpResponseForbidden("Not authorized.")
 289
 290     return JSONResponse(get_history(doc))
 291
 292
 293 @require_POST
 294 @ajax_require_permission('catalogue.can_pubmark')
 295 def pubmark(request, chunk_id):
 296     form = forms.DocumentPubmarkForm(request.POST, prefix="pubmark")
 297     if form.is_valid():
 298         doc = get_object_or_404(Chunk, pk=chunk_id)
 299         if not doc.book.accessible(request):
 300             return HttpResponseForbidden("Not authorized.")
 301
 302         revision = form.cleaned_data['revision']
 303         publishable = form.cleaned_data['publishable']
 304         change = doc.at_revision(revision)
 305         if publishable != change.publishable:
 306             change.set_publishable(publishable)
 307             return JSONResponse({"message": _("Revision marked")})
 308         else:
 309             return JSONResponse({"message": _("Nothing changed")})
 310     else:
 311         return JSONFormInvalid(form)
 312
 313
 314 def themes(request):
 315     prefix = request.GET.get('q', '')
 316     return http.HttpResponse('\n'.join([str(t) for t in Theme.objects.filter(name__istartswith=prefix)]))