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