apps/wiki/views.py

   1 import os
   2
   3 from django.conf import settings
   4
   5 from django.views.generic.simple import direct_to_template
   6 from django.views.decorators.http import require_POST
   7 from django.core.urlresolvers import reverse
   8 from wiki.helpers import JSONResponse, JSONFormInvalid, JSONServerError, ajax_require_permission
   9 from django import http
  10
  11 from wiki.models import getstorage, DocumentNotFound
  12 from wiki.forms import DocumentTextSaveForm, DocumentTagForm, DocumentCreateForm
  13 from datetime import datetime
  14 from django.utils.encoding import smart_unicode
  15 from django.utils.translation import ugettext_lazy as _
  16
  17 import wlapi
  18
  19 #
  20 # Quick hack around caching problems, TODO: use ETags
  21 #
  22 from django.views.decorators.cache import never_cache
  23
  24 import logging
  25 logger = logging.getLogger("fnp.peanut.api")
  26
  27 import nice_diff
  28 import operator
  29
  30 MAX_LAST_DOCS = 10
  31
  32
  33 @never_cache
  34 def document_list(request, template_name='wiki/document_list.html'):
  35     # TODO: find a way to cache "Storage All"
  36     return direct_to_template(request, template_name, extra_context={
  37         'document_list': getstorage().all(),
  38         'last_docs': sorted(request.session.get("wiki_last_docs", {}).items(),
  39                         key=operator.itemgetter(1), reverse=True),
  40     })
  41
  42
  43 @never_cache
  44 def document_detail(request, name, template_name='wiki/document_details.html'):
  45
  46     try:
  47         document = getstorage().get(name)
  48     except DocumentNotFound:
  49         return http.HttpResponseRedirect(reverse("wiki_create_missing", args=[name]))
  50
  51     access_time = datetime.now()
  52     last_documents = request.session.get("wiki_last_docs", {})
  53     last_documents[name] = access_time
  54
  55     if len(last_documents) > MAX_LAST_DOCS:
  56         oldest_key = min(last_documents, key=last_documents.__getitem__)
  57         del last_documents[oldest_key]
  58     request.session['wiki_last_docs'] = last_documents
  59
  60     return direct_to_template(request, template_name, extra_context={
  61         'document': document,
  62         'document_name': document.name,
  63         'document_info': document.info,
  64         'document_meta': document.meta,
  65         'forms': {
  66             "text_save": DocumentTextSaveForm(prefix="textsave"),
  67             "add_tag": DocumentTagForm(prefix="addtag")
  68         },
  69     })
  70
  71
  72 def document_create_missing(request, name):
  73     storage = getstorage()
  74
  75     if request.method == "POST":
  76         form = DocumentCreateForm(request.POST, request.FILES)
  77         if form.is_valid():
  78             doc = storage.create_document(
  79                 id=form.cleaned_data['id'],
  80                 text=form.cleaned_data['text'],
  81             )
  82
  83             return http.HttpResponseRedirect(reverse("wiki_details", args=[doc.name]))
  84     else:
  85         form = DocumentCreateForm(initial={
  86                 "id": name.replace(" ", "_"),
  87                 "title": name.title(),
  88         })
  89
  90     return direct_to_template(request, "wiki/document_create_missing.html", extra_context={
  91         "document_name": name,
  92         "form": form,
  93     })
  94
  95
  96 @never_cache
  97 def document_text(request, name):
  98     storage = getstorage()
  99
 100     if request.method == 'POST':
 101         form = DocumentTextSaveForm(request.POST, prefix="textsave")
 102
 103         if form.is_valid():
 104             revision = form.cleaned_data['parent_revision']
 105
 106             document = storage.get_or_404(name, revision)
 107             document.text = form.cleaned_data['text']
 108
 109             storage.put(document,
 110                 author=form.cleaned_data['author'] or request.user.username,
 111                 comment=form.cleaned_data['comment'],
 112                 parent=revision,
 113             )
 114
 115             document = storage.get(name)
 116
 117             return JSONResponse({
 118                 'text': document.plain_text if revision != document.revision else None,
 119                 'meta': document.meta(),
 120                 'revision': document.revision,
 121             })
 122         else:
 123             return JSONFormInvalid(form)
 124     else:
 125         revision = request.GET.get("revision", None)
 126
 127         try:
 128             try:
 129                 revision = revision and int(revision)
 130                 logger.info("Fetching %s", revision)
 131                 document = storage.get(name, revision)
 132             except ValueError:
 133                 # treat as a tag
 134                 logger.info("Fetching tag %s", revision)
 135                 document = storage.get_by_tag(name, revision)
 136         except DocumentNotFound:
 137             raise http.Http404
 138
 139         return JSONResponse({
 140             'text': document.plain_text,
 141             'meta': document.meta(),
 142             'revision': document.revision,
 143         })
 144
 145
 146 @never_cache
 147 def document_gallery(request, directory):
 148     try:
 149         base_url = ''.join((
 150                         smart_unicode(settings.MEDIA_URL),
 151                         smart_unicode(settings.FILEBROWSER_DIRECTORY),
 152                         smart_unicode(directory)))
 153
 154         base_dir = os.path.join(
 155                     smart_unicode(settings.MEDIA_ROOT),
 156                     smart_unicode(settings.FILEBROWSER_DIRECTORY),
 157                     smart_unicode(directory))
 158
 159         def map_to_url(filename):
 160             return "%s/%s" % (base_url, smart_unicode(filename))
 161
 162         def is_image(filename):
 163             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 164
 165         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 166         images.sort()
 167         return JSONResponse(images)
 168     except (IndexError, OSError) as e:
 169         logger.exception("Unable to fetch gallery")
 170         raise http.Http404
 171
 172
 173 @never_cache
 174 def document_diff(request, name):
 175     storage = getstorage()
 176
 177     revA = int(request.GET.get('from', 0))
 178     revB = int(request.GET.get('to', 0))
 179
 180     if revA > revB:
 181         revA, revB = revB, revA
 182
 183     if revB == 0:
 184         revB = None
 185
 186     docA = storage.get_or_404(name, int(revA))
 187     docB = storage.get_or_404(name, int(revB))
 188
 189     return http.HttpResponse(nice_diff.html_diff_table(docA.plain_text.splitlines(),
 190                                          docB.plain_text.splitlines(), context=3))
 191
 192
 193 @never_cache
 194 def document_history(request, name):
 195     storage = getstorage()
 196
 197     # TODO: pagination
 198     changesets = list(storage.history(name))
 199
 200     return JSONResponse(changesets)
 201
 202
 203 @require_POST
 204 @ajax_require_permission('wiki.can_change_tags')
 205 def document_add_tag(request, name):
 206     storage = getstorage()
 207
 208     form = DocumentTagForm(request.POST, prefix="addtag")
 209     if form.is_valid():
 210         doc = storage.get_or_404(form.cleaned_data['id'])
 211         doc.add_tag(tag=form.cleaned_data['tag'],
 212                     revision=form.cleaned_data['revision'],
 213                     author=request.user.username)
 214         return JSONResponse({"message": _("Tag added")})
 215     else:
 216         return JSONFormInvalid(form)
 217
 218
 219 @require_POST
 220 @ajax_require_permission('wiki.can_publish')
 221 def document_publish(request, name):
 222     storage = getstorage()
 223     document = storage.get_by_tag(name, "ready_to_publish")
 224
 225     api = wlapi.WLAPI(**settings.WL_API_CONFIG)
 226
 227     try:
 228         return JSONResponse({"result": api.publish_book(document)})
 229     except wlapi.APICallException, e:
 230         return JSONServerError({"message": str(e)})