apps/wiki/views.py

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