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, require_GET
   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 @require_GET
  74 def document_detail_readonly(request, name, template_name='wiki/document_details_readonly.html'):
  75     storage = getstorage()
  76
  77     try:
  78         revision = request.GET['revision']
  79         document = storage.get(name, revision)
  80     except (KeyError, DocumentNotFound) as e:
  81         raise http.Http404
  82
  83     access_time = datetime.now()
  84     last_documents = request.session.get("wiki_last_docs", {})
  85     last_documents[name] = access_time
  86
  87     if len(last_documents) > MAX_LAST_DOCS:
  88         oldest_key = min(last_documents, key=last_documents.__getitem__)
  89         del last_documents[oldest_key]
  90     request.session['wiki_last_docs'] = last_documents
  91
  92     return direct_to_template(request, template_name, extra_context={
  93         'document': document,
  94         'document_name': document.name,
  95         'document_info': dict(document.info(), readonly=True),
  96         'document_meta': document.meta,
  97     })
  98
  99
 100 def document_create_missing(request, name):
 101     storage = getstorage()
 102
 103     if request.method == "POST":
 104         form = DocumentCreateForm(request.POST, request.FILES)
 105         if form.is_valid():
 106             doc = storage.create_document(
 107                 id=form.cleaned_data['id'],
 108                 text=form.cleaned_data['text'],
 109             )
 110
 111             return http.HttpResponseRedirect(reverse("wiki_details", args=[doc.name]))
 112     else:
 113         form = DocumentCreateForm(initial={
 114                 "id": name.replace(" ", "_"),
 115                 "title": name.title(),
 116         })
 117
 118     return direct_to_template(request, "wiki/document_create_missing.html", extra_context={
 119         "document_name": name,
 120         "form": form,
 121     })
 122
 123
 124 @never_cache
 125 def document_text(request, name):
 126     storage = getstorage()
 127
 128     if request.method == 'POST':
 129         form = DocumentTextSaveForm(request.POST, prefix="textsave")
 130
 131         if form.is_valid():
 132             revision = form.cleaned_data['parent_revision']
 133
 134             document = storage.get_or_404(name, revision)
 135             document.text = form.cleaned_data['text']
 136
 137             storage.put(document,
 138                 author=form.cleaned_data['author'] or request.user.username,
 139                 comment=form.cleaned_data['comment'],
 140                 parent=revision,
 141             )
 142
 143             document = storage.get(name)
 144
 145             return JSONResponse({
 146                 'text': document.plain_text if revision != document.revision else None,
 147                 'meta': document.meta(),
 148                 'revision': document.revision,
 149             })
 150         else:
 151             return JSONFormInvalid(form)
 152     else:
 153         revision = request.GET.get("revision", None)
 154
 155         try:
 156             try:
 157                 revision = revision and int(revision)
 158                 logger.info("Fetching %s", revision)
 159                 document = storage.get(name, revision)
 160             except ValueError:
 161                 # treat as a tag
 162                 logger.info("Fetching tag %s", revision)
 163                 document = storage.get_by_tag(name, revision)
 164         except DocumentNotFound:
 165             raise http.Http404
 166
 167         return JSONResponse({
 168             'text': document.plain_text,
 169             'meta': document.meta(),
 170             'revision': document.revision,
 171         })
 172
 173
 174 @never_cache
 175 def document_gallery(request, directory):
 176     try:
 177         base_url = ''.join((
 178                         smart_unicode(settings.MEDIA_URL),
 179                         smart_unicode(settings.FILEBROWSER_DIRECTORY),
 180                         smart_unicode(directory)))
 181
 182         base_dir = os.path.join(
 183                     smart_unicode(settings.MEDIA_ROOT),
 184                     smart_unicode(settings.FILEBROWSER_DIRECTORY),
 185                     smart_unicode(directory))
 186
 187         def map_to_url(filename):
 188             return "%s/%s" % (base_url, smart_unicode(filename))
 189
 190         def is_image(filename):
 191             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 192
 193         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 194         images.sort()
 195         return JSONResponse(images)
 196     except (IndexError, OSError) as e:
 197         logger.exception("Unable to fetch gallery")
 198         raise http.Http404
 199
 200
 201 @never_cache
 202 def document_diff(request, name):
 203     storage = getstorage()
 204
 205     revA = int(request.GET.get('from', 0))
 206     revB = int(request.GET.get('to', 0))
 207
 208     if revA > revB:
 209         revA, revB = revB, revA
 210
 211     if revB == 0:
 212         revB = None
 213
 214     docA = storage.get_or_404(name, int(revA))
 215     docB = storage.get_or_404(name, int(revB))
 216
 217     return http.HttpResponse(nice_diff.html_diff_table(docA.plain_text.splitlines(),
 218                                          docB.plain_text.splitlines(), context=3))
 219
 220
 221 @never_cache
 222 def document_history(request, name):
 223     storage = getstorage()
 224
 225     # TODO: pagination
 226     changesets = list(storage.history(name))
 227
 228     return JSONResponse(changesets)
 229
 230
 231 @require_POST
 232 @ajax_require_permission('wiki.can_change_tags')
 233 def document_add_tag(request, name):
 234     storage = getstorage()
 235
 236     form = DocumentTagForm(request.POST, prefix="addtag")
 237     if form.is_valid():
 238         doc = storage.get_or_404(form.cleaned_data['id'])
 239         doc.add_tag(tag=form.cleaned_data['tag'],
 240                     revision=form.cleaned_data['revision'],
 241                     author=request.user.username)
 242         return JSONResponse({"message": _("Tag added")})
 243     else:
 244         return JSONFormInvalid(form)
 245
 246
 247 @require_POST
 248 @ajax_require_permission('wiki.can_publish')
 249 def document_publish(request, name):
 250     storage = getstorage()
 251     document = storage.get_by_tag(name, "ready_to_publish")
 252
 253     api = wlapi.WLAPI(**settings.WL_API_CONFIG)
 254
 255     try:
 256         return JSONResponse({"result": api.publish_book(document)})
 257     except wlapi.APICallException, e:
 258         return JSONServerError({"message": str(e)})