apps/wiki/views.py

   1 from datetime import datetime
   2 import os
   3 import logging
   4 import urllib
   5
   6 from django.conf import settings
   7 from django.core.urlresolvers import reverse
   8 from django import http
   9 from django.http import Http404, HttpResponseForbidden
  10 from django.middleware.gzip import GZipMiddleware
  11 from django.utils.decorators import decorator_from_middleware
  12 from django.utils.encoding import smart_unicode
  13 from django.utils.formats import localize
  14 from django.utils.translation import ugettext as _
  15 from django.views.decorators.http import require_POST, require_GET
  16 from django.shortcuts import get_object_or_404, render
  17 from django.utils import simplejson
  18
  19 from catalogue.models import Book, Chunk, Template
  20 import nice_diff
  21 from wiki import forms
  22 from wiki.helpers import (JSONResponse, JSONFormInvalid, JSONServerError,
  23                 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": _("Published") + ": " + \
  47                     localize(change.publish_log.order_by('-book_record__timestamp')[0].book_record.timestamp) \
  48                     if change.publish_log.exists() else "",
  49             })
  50     return changes
  51
  52
  53 @never_cache
  54 def editor(request, slug, chunk=None, template_name='wiki/bootstrap.html'):
  55     try:
  56         chunk = Chunk.get(slug, chunk)
  57     except Chunk.MultipleObjectsReturned:
  58         # TODO: choice page
  59         raise Http404
  60     except Chunk.DoesNotExist:
  61         if chunk is None:
  62             try:
  63                 book = Book.objects.get(slug=slug)
  64             except Book.DoesNotExist:
  65                 return http.HttpResponseRedirect(reverse("catalogue_create_missing", args=[slug]))
  66         else:
  67             raise Http404
  68     if not chunk.book.accessible(request):
  69         return HttpResponseForbidden("Not authorized.")
  70
  71     access_time = datetime.now()
  72     last_books = request.session.get("wiki_last_books", {})
  73     last_books[slug, chunk.slug] = {
  74         'time': access_time,
  75         'title': chunk.pretty_name(),
  76         }
  77
  78     if len(last_books) > MAX_LAST_DOCS:
  79         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
  80         del last_books[oldest_key]
  81     request.session['wiki_last_books'] = last_books
  82
  83     save_form = forms.DocumentTextSaveForm(user=request.user, prefix="textsave")
  84     return render(request, template_name, {
  85         'serialized_document_data': simplejson.dumps({
  86             'document': chunk.materialize(),
  87             'document_id': chunk.id,
  88             'title': chunk.book.title,
  89             'history': get_history(chunk),
  90             'version': chunk.revision()
  91         }),
  92         'serialized_templates': simplejson.dumps([
  93             {'id': t.id, 'name': t.name, 'content': t.content} for t in Template.objects.filter(is_partial=True)
  94         ]),
  95         'forms': {
  96             "text_save": save_form,
  97             "text_revert": forms.DocumentTextRevertForm(prefix="textrevert")
  98         },
  99         'tags': list(save_form.fields['stage_completed'].choices),
 100         'can_pubmark': request.user.has_perm('catalogue.can_pubmark'),
 101     })
 102
 103
 104 @require_GET
 105 def editor_readonly(request, slug, chunk=None, template_name='wiki/document_details_readonly.html'):
 106     try:
 107         chunk = Chunk.get(slug, chunk)
 108         revision = request.GET['revision']
 109     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist, KeyError):
 110         raise Http404
 111     if not chunk.book.accessible(request):
 112         return HttpResponseForbidden("Not authorized.")
 113
 114     access_time = datetime.now()
 115     last_books = request.session.get("wiki_last_books", {})
 116     last_books[slug, chunk.slug] = {
 117         'time': access_time,
 118         'title': chunk.book.title,
 119         }
 120
 121     if len(last_books) > MAX_LAST_DOCS:
 122         oldest_key = min(last_books, key=lambda x: last_books[x]['time'])
 123         del last_books[oldest_key]
 124     request.session['wiki_last_books'] = last_books
 125
 126     return render(request, template_name, {
 127         'chunk': chunk,
 128         'revision': revision,
 129         'readonly': True,
 130         'REDMINE_URL': settings.REDMINE_URL,
 131     })
 132
 133
 134 @never_cache
 135 @decorator_from_middleware(GZipMiddleware)
 136 def text(request, chunk_id):
 137     doc = get_object_or_404(Chunk, pk=chunk_id)
 138     if not doc.book.accessible(request):
 139         return HttpResponseForbidden("Not authorized.")
 140
 141     if request.method == 'POST':
 142         form = forms.DocumentTextSaveForm(request.POST, user=request.user, prefix="textsave")
 143         if form.is_valid():
 144             if request.user.is_authenticated():
 145                 author = request.user
 146             else:
 147                 author = None
 148             text = form.cleaned_data['text']
 149             parent_revision = form.cleaned_data['parent_revision']
 150             if parent_revision is not None:
 151                 parent = doc.at_revision(parent_revision)
 152             else:
 153                 parent = None
 154             stage = form.cleaned_data['stage_completed']
 155             tags = [stage] if stage else []
 156             publishable = (form.cleaned_data['publishable'] and
 157                     request.user.has_perm('catalogue.can_pubmark'))
 158             doc.commit(author=author,
 159                        text=text,
 160                        parent=parent,
 161                        description=form.cleaned_data['comment'],
 162                        tags=tags,
 163                        author_name=form.cleaned_data['author_name'],
 164                        author_email=form.cleaned_data['author_email'],
 165                        publishable=publishable,
 166                        )
 167             revision = doc.revision()
 168             return JSONResponse({
 169                 'text': doc.materialize() if parent_revision != revision else None,
 170                 'meta': {},
 171                 'version': revision,
 172             })
 173         else:
 174             return JSONFormInvalid(form)
 175     else:
 176         revision = request.GET.get("revision", None)
 177
 178         try:
 179             revision = int(revision)
 180         except (ValueError, TypeError):
 181             revision = doc.revision()
 182
 183         if revision is not None:
 184             text = doc.at_revision(revision).materialize()
 185         else:
 186             text = ''
 187
 188         return JSONResponse({
 189             'text': text,
 190             'meta': {},
 191             'revision': revision,
 192         })
 193
 194
 195 @never_cache
 196 @require_POST
 197 def revert(request, chunk_id):
 198     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 199     if form.is_valid():
 200         doc = get_object_or_404(Chunk, pk=chunk_id)
 201         if not doc.book.accessible(request):
 202             return HttpResponseForbidden("Not authorized.")
 203
 204         revision = form.cleaned_data['revision']
 205
 206         comment = form.cleaned_data['comment']
 207         comment += "\n#revert to %s" % revision
 208
 209         if request.user.is_authenticated():
 210             author = request.user
 211         else:
 212             author = None
 213
 214         before = doc.revision()
 215         logger.info("Reverting %s to %s", chunk_id, revision)
 216         doc.at_revision(revision).revert(author=author, description=comment)
 217
 218         return JSONResponse({
 219             'text': doc.materialize() if before != doc.revision() else None,
 220             'meta': {},
 221             'revision': doc.revision(),
 222         })
 223     else:
 224         return JSONFormInvalid(form)
 225
 226
 227 @never_cache
 228 def gallery(request, directory):
 229     try:
 230         base_url = ''.join((
 231                         smart_unicode(settings.MEDIA_URL),
 232                         smart_unicode(settings.IMAGE_DIR),
 233                         smart_unicode(directory)))
 234
 235         base_dir = os.path.join(
 236                     smart_unicode(settings.MEDIA_ROOT),
 237                     smart_unicode(settings.IMAGE_DIR),
 238                     smart_unicode(directory))
 239
 240         def map_to_url(filename):
 241             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 242
 243         def is_image(filename):
 244             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 245
 246         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 247         images.sort()
 248
 249         if not request.user.is_authenticated():
 250             return HttpResponseForbidden("Not authorized.")
 251
 252         return JSONResponse(images)
 253     except (IndexError, OSError):
 254         logger.exception("Unable to fetch gallery")
 255         raise http.Http404
 256
 257
 258 @never_cache
 259 def diff(request, chunk_id):
 260     revA = int(request.GET.get('from', 0))
 261     revB = int(request.GET.get('to', 0))
 262
 263     if revA > revB:
 264         revA, revB = revB, revA
 265
 266     if revB == 0:
 267         revB = None
 268
 269     doc = get_object_or_404(Chunk, pk=chunk_id)
 270     if not doc.book.accessible(request):
 271         return HttpResponseForbidden("Not authorized.")
 272
 273     # allow diff from the beginning
 274     if revA:
 275         docA = doc.at_revision(revA).materialize()
 276     else:
 277         docA = ""
 278     docB = doc.at_revision(revB).materialize()
 279
 280     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(),
 281                                          docB.splitlines(), context=3))
 282
 283
 284 @never_cache
 285 def revision(request, chunk_id):
 286     doc = get_object_or_404(Chunk, pk=chunk_id)
 287     if not doc.book.accessible(request):
 288         return HttpResponseForbidden("Not authorized.")
 289     return http.HttpResponse(str(doc.revision()))
 290
 291
 292 @never_cache
 293 def history(request, chunk_id):
 294     # TODO: pagination
 295     doc = get_object_or_404(Chunk, pk=chunk_id)
 296     if not doc.book.accessible(request):
 297         return HttpResponseForbidden("Not authorized.")
 298
 299     return JSONResponse(get_history(doc))
 300
 301
 302 @require_POST
 303 @ajax_require_permission('catalogue.can_pubmark')
 304 def pubmark(request, chunk_id):
 305     form = forms.DocumentPubmarkForm(request.POST, prefix="pubmark")
 306     if form.is_valid():
 307         doc = get_object_or_404(Chunk, pk=chunk_id)
 308         if not doc.book.accessible(request):
 309             return HttpResponseForbidden("Not authorized.")
 310
 311         revision = form.cleaned_data['revision']
 312         publishable = form.cleaned_data['publishable']
 313         change = doc.at_revision(revision)
 314         if publishable != change.publishable:
 315             change.set_publishable(publishable)
 316             return JSONResponse({"message": _("Revision marked")})
 317         else:
 318             return JSONResponse({"message": _("Nothing changed")})
 319     else:
 320         return JSONFormInvalid(form)
 321
 322
 323 def themes(request):
 324     prefix = request.GET.get('q', '')
 325     return http.HttpResponse('\n'.join([str(t) for t in Theme.objects.filter(name__istartswith=prefix)]))