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': doc.assigned_to.username if doc.assigned_to else None,
  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             return JSONResponse({
 125                 'text': None,  # doc.materialize() if parent_revision != revision else None,
 126                 'version': len(get_history(doc)),
 127                 'stage': doc.stage,
 128                 'stage_name': doc.stage_name(),
 129                 'assignment': doc.assigned_to.username if doc.assigned_to else None
 130             })
 131         else:
 132             return JSONFormInvalid(form)
 133     else:
 134         revision = request.GET.get("revision", None)
 135
 136         try:
 137             revision = int(revision)
 138         except (ValueError, TypeError):
 139             revision = doc.revision()
 140
 141         if revision is not None:
 142             text = doc.at_revision(revision).materialize()
 143         else:
 144             text = ''
 145
 146         return JSONResponse({
 147             'text': text,
 148             'meta': {},
 149             'revision': revision,
 150         })
 151
 152
 153 @never_cache
 154 @require_POST
 155 def revert(request, doc_id):
 156     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 157     if form.is_valid():
 158         doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 159         rev = get_object_or_404(Revision, pk=form.cleaned_data['revision'])
 160
 161         comment = form.cleaned_data['comment']
 162         comment += "\n#revert to %s" % rev.pk
 163
 164         if request.user.is_authenticated():
 165             author = request.user
 166         else:
 167             author = None
 168
 169         # before = doc.revision
 170         logger.info("Reverting %s to %s", doc_id, rev.pk)
 171
 172         doc.commit(
 173             author=author,
 174             text=rev.materialize(),
 175             description=comment,
 176             # author_name=form.cleaned_data['author_name'], #?
 177             # author_email=form.cleaned_data['author_email'], #?
 178         )
 179
 180         return JSONResponse({
 181             'document': doc.materialize(),
 182             'version': len(get_history(doc)),
 183             'stage': doc.stage,
 184             'stage_name': doc.stage_name(),
 185             'assignment': doc.assigned_to.username if doc.assigned_to else None,
 186         })
 187     else:
 188         return JSONFormInvalid(form)
 189
 190
 191 @never_cache
 192 def gallery(request, directory):
 193     if not request.user.is_authenticated():
 194         return HttpResponseForbidden("Not authorized.")
 195
 196     try:
 197         base_url = ''.join((
 198                         smart_unicode(settings.MEDIA_URL),
 199                         smart_unicode(settings.IMAGE_DIR),
 200                         smart_unicode(directory)))
 201
 202         base_dir = os.path.join(
 203                     smart_unicode(settings.MEDIA_ROOT),
 204                     smart_unicode(settings.IMAGE_DIR),
 205                     smart_unicode(directory))
 206
 207         def map_to_url(filename):
 208             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 209
 210         def is_image(filename):
 211             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 212
 213         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 214         images.sort()
 215
 216         return JSONResponse(images)
 217     except (IndexError, OSError):
 218         logger.exception("Unable to fetch gallery")
 219         raise http.Http404
 220
 221
 222 @never_cache
 223 def diff(request, doc_id):
 224     revA = int(request.GET.get('from', 0))
 225     revB = int(request.GET.get('to', 0))
 226
 227     if revA > revB:
 228         revA, revB = revB, revA
 229
 230     if revB == 0:
 231         revB = None
 232
 233     # TODO: check if revisions in line.
 234
 235     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 236
 237     # allow diff from the beginning
 238     if revA:
 239         docA = Revision.objects.get(pk=revA).materialize()
 240     else:
 241         docA = ""
 242     docB = Revision.objects.get(pk=revB).materialize()
 243
 244     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(), docB.splitlines(), context=3))
 245
 246
 247 @never_cache
 248 def history(request, doc_id):
 249     # TODO: pagination
 250     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 251
 252     return JSONResponse(get_history(doc))