apps/catalogue/views.py

   1 from datetime import datetime
   2 import logging
   3 import os
   4 from StringIO import StringIO
   5
   6 from django.contrib import auth
   7 from django.contrib.auth.models import User
   8 from django.contrib.auth.decorators import login_required
   9 from django.core.urlresolvers import reverse
  10 from django.db.models import Count
  11 from django import http
  12 from django.http import Http404
  13 from django.shortcuts import get_object_or_404
  14 from django.utils.http import urlquote_plus
  15 from django.utils.translation import ugettext_lazy as _
  16 from django.views.decorators.http import require_POST
  17 from django.views.generic.simple import direct_to_template
  18
  19 import librarian.html
  20 import librarian.text
  21
  22 from catalogue import forms
  23 from catalogue import helpers
  24 from catalogue.helpers import active_tab
  25 from catalogue.models import Book, Chunk, BookPublishRecord, ChunkPublishRecord
  26 from catalogue import xml_tools
  27
  28 #
  29 # Quick hack around caching problems, TODO: use ETags
  30 #
  31 from django.views.decorators.cache import never_cache
  32
  33 logger = logging.getLogger("fnp.catalogue")
  34
  35
  36 def slug_filter(qs, value, filter_field, model, model_field='slug', unset=''):
  37     if value == unset:
  38         return qs.filter(**{filter_field: None})
  39     if value is None:
  40         return qs
  41     try:
  42         obj = model._default_manager.get(**{model_field: value})
  43     except model.DoesNotExist:
  44         return qs.none()
  45     else:
  46         return qs.filter(**{filter_field: obj})
  47
  48
  49 @active_tab('all')
  50 @never_cache
  51 def document_list(request, filters=None):
  52     chunks = Chunk.objects.order_by('book__title', 'book', 'number')
  53
  54     chunks = slug_filter(chunks, request.GET.get('user', None), 'user', User, 'username')
  55     chunks = slug_filter(chunks, request.GET.get('stage', None), 'stage', Chunk.tag_model, 'slug')
  56
  57     chunks_list = helpers.ChunksList(chunks)
  58
  59     return direct_to_template(request, 'catalogue/document_list.html', extra_context={
  60         'books': chunks_list,
  61         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  62                         key=lambda x: x[1]['time'], reverse=True),
  63         'stages': Chunk.tag_model.objects.all(),
  64         'users': User.objects.annotate(count=Count('chunk')).order_by('-count', 'last_name', 'first_name'),
  65     })
  66
  67
  68 @never_cache
  69 def user(request, username=None):
  70     if username is None:
  71         if request.user.is_authenticated():
  72             user = request.user
  73         else:
  74             raise Http404
  75     else:
  76         user = get_object_or_404(User, username=username)
  77
  78     chunks_list = helpers.ChunksList(Chunk.objects.filter(
  79         user=user).order_by('book__title', 'book', 'number'))
  80
  81     return direct_to_template(request, 'catalogue/document_list.html', extra_context={
  82         'books': chunks_list,
  83         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  84                         key=lambda x: x[1]['time'], reverse=True),
  85         'viewed_user': user,
  86         'stages': Chunk.tag_model.objects.all(),
  87     })
  88 my = login_required(active_tab('my')(user))
  89
  90
  91 @active_tab('users')
  92 def users(request):
  93     return direct_to_template(request, 'catalogue/user_list.html', extra_context={
  94         'users': User.objects.all().annotate(count=Count('chunk')).order_by(
  95             '-count', 'last_name', 'first_name'),
  96     })
  97
  98
  99 @never_cache
 100 def logout_then_redirect(request):
 101     auth.logout(request)
 102     return http.HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
 103
 104
 105 @active_tab('create')
 106 def create_missing(request, slug=None):
 107     if slug is None:
 108         slug = ''
 109     slug = slug.replace(' ', '-')
 110
 111     if request.method == "POST":
 112         form = forms.DocumentCreateForm(request.POST, request.FILES)
 113         if form.is_valid():
 114
 115             if request.user.is_authenticated():
 116                 creator = request.user
 117             else:
 118                 creator = None
 119             book = Book.create(creator=creator,
 120                 slug=form.cleaned_data['slug'],
 121                 title=form.cleaned_data['title'],
 122                 text=form.cleaned_data['text'],
 123             )
 124
 125             return http.HttpResponseRedirect(reverse("wiki_editor", args=[book.slug]))
 126     else:
 127         form = forms.DocumentCreateForm(initial={
 128                 "slug": slug,
 129                 "title": slug.replace('-', ' ').title(),
 130         })
 131
 132     return direct_to_template(request, "catalogue/document_create_missing.html", extra_context={
 133         "slug": slug,
 134         "form": form,
 135     })
 136
 137
 138 @active_tab('upload')
 139 def upload(request):
 140     if request.method == "POST":
 141         form = forms.DocumentsUploadForm(request.POST, request.FILES)
 142         if form.is_valid():
 143             import slughifi
 144
 145             if request.user.is_authenticated():
 146                 creator = request.user
 147             else:
 148                 creator = None
 149
 150             zip = form.cleaned_data['zip']
 151             skipped_list = []
 152             ok_list = []
 153             error_list = []
 154             slugs = {}
 155             existing = [book.slug for book in Book.objects.all()]
 156             for filename in zip.namelist():
 157                 if filename[-1] == '/':
 158                     continue
 159                 title = os.path.basename(filename)[:-4]
 160                 slug = slughifi(title)
 161                 if not (slug and filename.endswith('.xml')):
 162                     skipped_list.append(filename)
 163                 elif slug in slugs:
 164                     error_list.append((filename, slug, _('Slug already used for %s' % slugs[slug])))
 165                 elif slug in existing:
 166                     error_list.append((filename, slug, _('Slug already used in repository.')))
 167                 else:
 168                     try:
 169                         zip.read(filename).decode('utf-8') # test read
 170                         ok_list.append((filename, slug, title))
 171                     except UnicodeDecodeError:
 172                         error_list.append((filename, title, _('File should be UTF-8 encoded.')))
 173                     slugs[slug] = filename
 174
 175             if not error_list:
 176                 for filename, slug, title in ok_list:
 177                     Book.create(creator=creator,
 178                         slug=slug,
 179                         title=title,
 180                         text=zip.read(filename).decode('utf-8'),
 181                     )
 182
 183             return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 184                 "form": form,
 185                 "ok_list": ok_list,
 186                 "skipped_list": skipped_list,
 187                 "error_list": error_list,
 188             })
 189     else:
 190         form = forms.DocumentsUploadForm()
 191
 192     return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 193         "form": form,
 194     })
 195
 196
 197 @never_cache
 198 def book_xml(request, slug):
 199     xml = get_object_or_404(Book, slug=slug).materialize()
 200
 201     response = http.HttpResponse(xml, content_type='application/xml', mimetype='application/wl+xml')
 202     response['Content-Disposition'] = 'attachment; filename=%s.xml' % slug
 203     return response
 204
 205
 206 @never_cache
 207 def book_txt(request, slug):
 208     xml = get_object_or_404(Book, slug=slug).materialize()
 209     output = StringIO()
 210     # errors?
 211     librarian.text.transform(StringIO(xml), output)
 212     text = output.getvalue()
 213     response = http.HttpResponse(text, content_type='text/plain', mimetype='text/plain')
 214     response['Content-Disposition'] = 'attachment; filename=%s.txt' % slug
 215     return response
 216
 217
 218 @never_cache
 219 def book_html(request, slug):
 220     xml = get_object_or_404(Book, slug=slug).materialize()
 221     output = StringIO()
 222     # errors?
 223     librarian.html.transform(StringIO(xml), output, parse_dublincore=False,
 224                              flags=['full-page'])
 225     html = output.getvalue()
 226     response = http.HttpResponse(html, content_type='text/html', mimetype='text/html')
 227     return response
 228
 229
 230 @never_cache
 231 def revision(request, slug, chunk=None):
 232     try:
 233         doc = Chunk.get(slug, chunk)
 234     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 235         raise Http404
 236     return http.HttpResponse(str(doc.revision()))
 237
 238
 239 def book(request, slug):
 240     book = get_object_or_404(Book, slug=slug)
 241
 242     # TODO: most of this should go somewhere else
 243
 244     # do we need some automation?
 245     first_master = None
 246     chunks = []
 247     need_fixing = False
 248     choose_master = False
 249
 250     length = book.chunk_set.count()
 251     for i, chunk in enumerate(book):
 252         chunk_dict = {
 253             "chunk": chunk,
 254             "fix": [],
 255             "grade": ""
 256             }
 257         graded = xml_tools.GradedText(chunk.materialize())
 258         if graded.is_wl():
 259             master = graded.master()
 260             if first_master is None:
 261                 first_master = master
 262             elif master != first_master:
 263                 chunk_dict['fix'].append('bad-master')
 264
 265             if i > 0 and not graded.has_trim_begin():
 266                 chunk_dict['fix'].append('trim-begin')
 267             if i < length - 1 and not graded.has_trim_end():
 268                 chunk_dict['fix'].append('trim-end')
 269
 270             if chunk_dict['fix']:
 271                 chunk_dict['grade'] = 'wl-fix'
 272             else:
 273                 chunk_dict['grade'] = 'wl'
 274
 275         elif graded.is_broken_wl():
 276             chunk_dict['grade'] = 'wl-broken'
 277         elif graded.is_xml():
 278             chunk_dict['grade'] = 'xml'
 279         else:
 280             chunk_dict['grade'] = 'plain'
 281             chunk_dict['fix'].append('wl')
 282             choose_master = True
 283
 284         if chunk_dict['fix']:
 285             need_fixing = True
 286         chunks.append(chunk_dict)
 287
 288     if first_master or not need_fixing:
 289         choose_master = False
 290
 291     if request.method == "POST":
 292         form = forms.ChooseMasterForm(request.POST)
 293         if not choose_master or form.is_valid():
 294             if choose_master:
 295                 first_master = form.cleaned_data['master']
 296
 297             # do the actual fixing
 298             for c in chunks:
 299                 if not c['fix']:
 300                     continue
 301
 302                 text = c['chunk'].materialize()
 303                 for fix in c['fix']:
 304                     if fix == 'bad-master':
 305                         text = xml_tools.change_master(text, first_master)
 306                     elif fix == 'trim-begin':
 307                         text = xml_tools.add_trim_begin(text)
 308                     elif fix == 'trim-end':
 309                         text = xml_tools.add_trim_end(text)
 310                     elif fix == 'wl':
 311                         text = xml_tools.basic_structure(text, first_master)
 312                 author = request.user if request.user.is_authenticated() else None
 313                 description = "auto-fix: " + ", ".join(c['fix'])
 314                 c['chunk'].commit(text=text, author=author,
 315                     description=description)
 316
 317             return http.HttpResponseRedirect(book.get_absolute_url())
 318     elif choose_master:
 319         form = forms.ChooseMasterForm()
 320     else:
 321         form = None
 322
 323     return direct_to_template(request, "catalogue/book_detail.html", extra_context={
 324         "book": book,
 325         "chunks": chunks,
 326         "need_fixing": need_fixing,
 327         "choose_master": choose_master,
 328         "first_master": first_master,
 329         "form": form,
 330     })
 331
 332
 333 def chunk_add(request, slug, chunk):
 334     try:
 335         doc = Chunk.get(slug, chunk)
 336     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 337         raise Http404
 338
 339     if request.method == "POST":
 340         form = forms.ChunkAddForm(request.POST, instance=doc)
 341         if form.is_valid():
 342             if request.user.is_authenticated():
 343                 creator = request.user
 344             else:
 345                 creator = None
 346             doc.split(creator=creator,
 347                 slug=form.cleaned_data['slug'],
 348                 comment=form.cleaned_data['comment'],
 349             )
 350
 351             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 352     else:
 353         form = forms.ChunkAddForm(initial={
 354                 "slug": str(doc.number + 1),
 355                 "comment": "cz. %d" % (doc.number + 1, ),
 356         })
 357
 358     return direct_to_template(request, "catalogue/chunk_add.html", extra_context={
 359         "chunk": doc,
 360         "form": form,
 361     })
 362
 363
 364 def chunk_edit(request, slug, chunk):
 365     try:
 366         doc = Chunk.get(slug, chunk)
 367     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 368         raise Http404
 369     if request.method == "POST":
 370         form = forms.ChunkForm(request.POST, instance=doc)
 371         if form.is_valid():
 372             form.save()
 373             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 374     else:
 375         form = forms.ChunkForm(instance=doc)
 376     return direct_to_template(request, "catalogue/chunk_edit.html", extra_context={
 377         "chunk": doc,
 378         "form": form,
 379     })
 380
 381
 382 def book_append(request, slug):
 383     book = get_object_or_404(Book, slug=slug)
 384     if request.method == "POST":
 385         form = forms.BookAppendForm(request.POST)
 386         if form.is_valid():
 387             append_to = form.cleaned_data['append_to']
 388             append_to.append(book)
 389             return http.HttpResponseRedirect(append_to.get_absolute_url())
 390     else:
 391         form = forms.BookAppendForm()
 392     return direct_to_template(request, "catalogue/book_append_to.html", extra_context={
 393         "book": book,
 394         "form": form,
 395     })
 396
 397
 398 def book_edit(request, slug):
 399     book = get_object_or_404(Book, slug=slug)
 400     if request.method == "POST":
 401         form = forms.BookForm(request.POST, instance=book)
 402         if form.is_valid():
 403             form.save()
 404             return http.HttpResponseRedirect(book.get_absolute_url())
 405     else:
 406         form = forms.BookForm(instance=book)
 407     return direct_to_template(request, "catalogue/book_edit.html", extra_context={
 408         "book": book,
 409         "form": form,
 410     })
 411
 412
 413 @require_POST
 414 @login_required
 415 def publish(request, slug):
 416     book = get_object_or_404(Book, slug=slug)
 417     try:
 418         book.publish(request.user)
 419     except BaseException, e:
 420         return http.HttpResponse(e)
 421     else:
 422         return http.HttpResponseRedirect(book.get_absolute_url())