apps/wiki/views.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # This file is part of MIL/PEER, licensed under GNU Affero GPLv3 or later.
   4 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
   5 #
   6 import json
   7 import os
   8 import logging
   9 import urllib
  10
  11 from django.conf import settings
  12 from django import http
  13 from django.http import HttpResponseForbidden
  14 from django.middleware.gzip import GZipMiddleware
  15 from django.utils.decorators import decorator_from_middleware
  16 from django.utils.encoding import smart_unicode
  17 from django.utils.formats import localize
  18 from django.utils.html import escape
  19 from django.utils.translation import ugettext as _
  20 from django.views.decorators.http import require_POST
  21 from django.shortcuts import get_object_or_404, render
  22
  23 from catalogue.models import Document, Template
  24 from dvcs.models import Revision
  25 import nice_diff
  26 from wiki import forms
  27 from wiki.helpers import JSONResponse, JSONFormInvalid
  28
  29 #
  30 # Quick hack around caching problems, TODO: use ETags
  31 #
  32 from django.views.decorators.cache import never_cache
  33
  34 logger = logging.getLogger("fnp.wiki")
  35
  36 MAX_LAST_DOCS = 10
  37
  38
  39 def get_history(document):
  40     revisions = []
  41     for i, revision in enumerate(document.history()):
  42         revisions.append({
  43             "version": i + 1,
  44             "description": revision.description,
  45             "author": escape(revision.author_str()),
  46             "date": localize(revision.created_at),
  47             "revision": revision.pk,
  48             "published": _("Published") + ": " +
  49             localize(revision.publish_log.order_by('-timestamp')[0].timestamp)
  50             if revision.publish_log.exists() else "",
  51         })
  52     return revisions
  53
  54
  55 @never_cache
  56 def editor(request, pk, template_name='wiki/bootstrap.html'):
  57     doc = get_object_or_404(Document, pk=pk, deleted=False)
  58
  59     save_form = forms.DocumentTextSaveForm(user=request.user, prefix="textsave")
  60     text = doc.materialize()
  61     revision = doc.revision
  62     history = get_history(doc)
  63     return render(request, template_name, {
  64         'serialized_document_data': json.dumps({
  65             'document': text,
  66             'document_id': doc.pk,
  67             'title': doc.meta().get('title', ''),
  68             'history': history,
  69             'version': len(history),
  70             'revision': revision.pk,
  71             'stage': doc.stage,
  72             'stage_name': doc.stage_name(),
  73             'assignment': str(doc.assigned_to),
  74         }),
  75         'serialized_templates': json.dumps([
  76             {'id': t.id, 'name': t.name, 'content': t.content} for t in Template.objects.filter(is_partial=True)
  77         ]),
  78         'forms': {
  79             "text_save": save_form,
  80             "text_revert": forms.DocumentTextRevertForm(prefix="textrevert"),
  81             "text_publish": forms.DocumentTextPublishForm(prefix="textpublish"),
  82         },
  83         'pk': doc.pk,
  84     })
  85
  86
  87 @never_cache
  88 @decorator_from_middleware(GZipMiddleware)
  89 def text(request, doc_id):
  90     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
  91     # if not doc.book.accessible(request):
  92     #     return HttpResponseForbidden("Not authorized.")
  93
  94     if request.method == 'POST':
  95         form = forms.DocumentTextSaveForm(request.POST, user=request.user, prefix="textsave")
  96         if form.is_valid():
  97             if request.user.is_authenticated():
  98                 author = request.user
  99             else:
 100                 author = None
 101             text = form.cleaned_data['text']
 102             # parent_revision = form.cleaned_data['parent_revision']
 103             # if parent_revision is not None:
 104             #     parent = doc.at_revision(parent_revision)
 105             # else:
 106             #     parent = None
 107             stage = form.cleaned_data['stage']
 108             # tags = [stage] if stage else []
 109             # publishable = (form.cleaned_data['publishable'] and
 110             #                request.user.has_perm('catalogue.can_pubmark'))
 111             try:
 112                 doc.commit(
 113                     author=author,
 114                     text=text,
 115                     description=form.cleaned_data['comment'],
 116                     author_name=form.cleaned_data['author_name'],
 117                     author_email=form.cleaned_data['author_email'],
 118                 )
 119                 doc.set_stage(stage)
 120             except:
 121                 from traceback import print_exc
 122                 print_exc()
 123                 raise
 124             # revision = doc.revision()
 125             return JSONResponse({
 126                 'text': None,  # doc.materialize() if parent_revision != revision else None,
 127                 # 'version': revision,
 128                 'stage': doc.stage,
 129                 'stage_name': doc.stage_name(),
 130                 'assignment': doc.assigned_to.username if doc.assigned_to else None
 131             })
 132         else:
 133             return JSONFormInvalid(form)
 134     else:
 135         revision = request.GET.get("revision", None)
 136
 137         try:
 138             revision = int(revision)
 139         except (ValueError, TypeError):
 140             revision = doc.revision()
 141
 142         if revision is not None:
 143             text = doc.at_revision(revision).materialize()
 144         else:
 145             text = ''
 146
 147         return JSONResponse({
 148             'text': text,
 149             'meta': {},
 150             'revision': revision,
 151         })
 152
 153
 154 @never_cache
 155 @require_POST
 156 def revert(request, doc_id):
 157     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 158     if form.is_valid():
 159         doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 160         rev = get_object_or_404(Revision, pk=form.cleaned_data['revision'])
 161
 162         comment = form.cleaned_data['comment']
 163         comment += "\n#revert to %s" % rev.pk
 164
 165         if request.user.is_authenticated():
 166             author = request.user
 167         else:
 168             author = None
 169
 170         # before = doc.revision
 171         logger.info("Reverting %s to %s", doc_id, rev.pk)
 172
 173         doc.commit(
 174             author=author,
 175             text=rev.materialize(),
 176             description=comment,
 177             # author_name=form.cleaned_data['author_name'], #?
 178             # author_email=form.cleaned_data['author_email'], #?
 179         )
 180
 181         return JSONResponse({
 182             # 'document': None, #doc.materialize() if before != doc.revision else None,
 183             # 'version': doc.revision(),
 184         })
 185     else:
 186         return JSONFormInvalid(form)
 187
 188
 189 @never_cache
 190 def gallery(request, directory):
 191     if not request.user.is_authenticated():
 192         return HttpResponseForbidden("Not authorized.")
 193
 194     try:
 195         base_url = ''.join((
 196                         smart_unicode(settings.MEDIA_URL),
 197                         smart_unicode(settings.IMAGE_DIR),
 198                         smart_unicode(directory)))
 199
 200         base_dir = os.path.join(
 201                     smart_unicode(settings.MEDIA_ROOT),
 202                     smart_unicode(settings.IMAGE_DIR),
 203                     smart_unicode(directory))
 204
 205         def map_to_url(filename):
 206             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 207
 208         def is_image(filename):
 209             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 210
 211         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 212         images.sort()
 213
 214         return JSONResponse(images)
 215     except (IndexError, OSError):
 216         logger.exception("Unable to fetch gallery")
 217         raise http.Http404
 218
 219
 220 @never_cache
 221 def diff(request, doc_id):
 222     revA = int(request.GET.get('from', 0))
 223     revB = int(request.GET.get('to', 0))
 224
 225     if revA > revB:
 226         revA, revB = revB, revA
 227
 228     if revB == 0:
 229         revB = None
 230
 231     # TODO: check if revisions in line.
 232
 233     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 234
 235     # allow diff from the beginning
 236     if revA:
 237         docA = Revision.objects.get(pk=revA).materialize()
 238     else:
 239         docA = ""
 240     docB = Revision.objects.get(pk=revB).materialize()
 241
 242     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(), docB.splitlines(), context=3))
 243
 244
 245 @never_cache
 246 def history(request, doc_id):
 247     # TODO: pagination
 248     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 249
 250     return JSONResponse(get_history(doc))