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             'assignment': str(doc.assigned_to),
  73         }),
  74         'serialized_templates': json.dumps([
  75             {'id': t.id, 'name': t.name, 'content': t.content} for t in Template.objects.filter(is_partial=True)
  76         ]),
  77         'forms': {
  78             "text_save": save_form,
  79             "text_revert": forms.DocumentTextRevertForm(prefix="textrevert"),
  80             "text_publish": forms.DocumentTextPublishForm(prefix="textpublish"),
  81         },
  82         'pk': doc.pk,
  83     })
  84
  85
  86 @never_cache
  87 @decorator_from_middleware(GZipMiddleware)
  88 def text(request, doc_id):
  89     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
  90     # if not doc.book.accessible(request):
  91     #     return HttpResponseForbidden("Not authorized.")
  92
  93     if request.method == 'POST':
  94         form = forms.DocumentTextSaveForm(request.POST, user=request.user, prefix="textsave")
  95         if form.is_valid():
  96             if request.user.is_authenticated():
  97                 author = request.user
  98             else:
  99                 author = None
 100             text = form.cleaned_data['text']
 101             # parent_revision = form.cleaned_data['parent_revision']
 102             # if parent_revision is not None:
 103             #     parent = doc.at_revision(parent_revision)
 104             # else:
 105             #     parent = None
 106             stage = form.cleaned_data['stage']
 107             # tags = [stage] if stage else []
 108             # publishable = (form.cleaned_data['publishable'] and
 109             #                request.user.has_perm('catalogue.can_pubmark'))
 110             try:
 111                 doc.commit(
 112                     author=author,
 113                     text=text,
 114                     description=form.cleaned_data['comment'],
 115                     author_name=form.cleaned_data['author_name'],
 116                     author_email=form.cleaned_data['author_email'],
 117                 )
 118                 doc.set_stage(stage)
 119             except:
 120                 from traceback import print_exc
 121                 print_exc()
 122                 raise
 123             # revision = doc.revision()
 124             return JSONResponse({
 125                 'text': None,  # doc.materialize() if parent_revision != revision else None,
 126                 # 'version': revision,
 127                 # 'stage': doc.stage.name if doc.stage else None,
 128                 'assignment': doc.assigned_to.username if doc.assigned_to else None
 129             })
 130         else:
 131             return JSONFormInvalid(form)
 132     else:
 133         revision = request.GET.get("revision", None)
 134
 135         try:
 136             revision = int(revision)
 137         except (ValueError, TypeError):
 138             revision = doc.revision()
 139
 140         if revision is not None:
 141             text = doc.at_revision(revision).materialize()
 142         else:
 143             text = ''
 144
 145         return JSONResponse({
 146             'text': text,
 147             'meta': {},
 148             'revision': revision,
 149         })
 150
 151
 152 @never_cache
 153 @require_POST
 154 def revert(request, doc_id):
 155     form = forms.DocumentTextRevertForm(request.POST, prefix="textrevert")
 156     if form.is_valid():
 157         doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 158         rev = get_object_or_404(Revision, pk=form.cleaned_data['revision'])
 159
 160         comment = form.cleaned_data['comment']
 161         comment += "\n#revert to %s" % rev.pk
 162
 163         if request.user.is_authenticated():
 164             author = request.user
 165         else:
 166             author = None
 167
 168         # before = doc.revision
 169         logger.info("Reverting %s to %s", doc_id, rev.pk)
 170
 171         doc.commit(
 172             author=author,
 173             text=rev.materialize(),
 174             description=comment,
 175             # author_name=form.cleaned_data['author_name'], #?
 176             # author_email=form.cleaned_data['author_email'], #?
 177         )
 178
 179         return JSONResponse({
 180             # 'document': None, #doc.materialize() if before != doc.revision else None,
 181             # 'version': doc.revision(),
 182         })
 183     else:
 184         return JSONFormInvalid(form)
 185
 186
 187 @never_cache
 188 def gallery(request, directory):
 189     if not request.user.is_authenticated():
 190         return HttpResponseForbidden("Not authorized.")
 191
 192     try:
 193         base_url = ''.join((
 194                         smart_unicode(settings.MEDIA_URL),
 195                         smart_unicode(settings.IMAGE_DIR),
 196                         smart_unicode(directory)))
 197
 198         base_dir = os.path.join(
 199                     smart_unicode(settings.MEDIA_ROOT),
 200                     smart_unicode(settings.IMAGE_DIR),
 201                     smart_unicode(directory))
 202
 203         def map_to_url(filename):
 204             return urllib.quote("%s/%s" % (base_url, smart_unicode(filename)))
 205
 206         def is_image(filename):
 207             return os.path.splitext(f)[1].lower() in (u'.jpg', u'.jpeg', u'.png')
 208
 209         images = [map_to_url(f) for f in map(smart_unicode, os.listdir(base_dir)) if is_image(f)]
 210         images.sort()
 211
 212         return JSONResponse(images)
 213     except (IndexError, OSError):
 214         logger.exception("Unable to fetch gallery")
 215         raise http.Http404
 216
 217
 218 @never_cache
 219 def diff(request, doc_id):
 220     revA = int(request.GET.get('from', 0))
 221     revB = int(request.GET.get('to', 0))
 222
 223     if revA > revB:
 224         revA, revB = revB, revA
 225
 226     if revB == 0:
 227         revB = None
 228
 229     # TODO: check if revisions in line.
 230
 231     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 232
 233     # allow diff from the beginning
 234     if revA:
 235         docA = Revision.objects.get(pk=revA).materialize()
 236     else:
 237         docA = ""
 238     docB = Revision.objects.get(pk=revB).materialize()
 239
 240     return http.HttpResponse(nice_diff.html_diff_table(docA.splitlines(), docB.splitlines(), context=3))
 241
 242
 243 @never_cache
 244 def history(request, doc_id):
 245     # TODO: pagination
 246     doc = get_object_or_404(Document, pk=doc_id, deleted=False)
 247
 248     return JSONResponse(get_history(doc))