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 foreign_filter(qs, value, filter_field, model, model_field='slug', unset='-'):
  37     if value == unset:
  38         return qs.filter(**{filter_field: None})
  39     if not value:
  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 def search_filter(qs, value, filter_field):
  50     if not value:
  51         return qs
  52     return qs.filter(**{"%s__icontains" % filter_field: value})
  53
  54
  55 @active_tab('all')
  56 @never_cache
  57 def document_list(request, filters=None):
  58     chunks = Chunk.objects.order_by('book__title', 'book', 'number')
  59
  60     chunks = foreign_filter(chunks, request.GET.get('user', None), 'user', User, 'username')
  61     chunks = foreign_filter(chunks, request.GET.get('stage', None), 'stage', Chunk.tag_model, 'slug')
  62     chunks = search_filter(chunks, request.GET.get('title', None), 'book__title')
  63
  64     chunks_list = helpers.ChunksList(chunks)
  65
  66     users = User.objects.annotate(count=Count('chunk')).filter(count__gt=0).order_by('-count', 'last_name', 'first_name')
  67     #users = User.objects.annotate(count=Count('chunk')).order_by('-count', 'last_name', 'first_name')
  68
  69
  70     return direct_to_template(request, 'catalogue/document_list.html', extra_context={
  71         'books': chunks_list,
  72         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  73                         key=lambda x: x[1]['time'], reverse=True),
  74         'stages': Chunk.tag_model.objects.all(),
  75         'users': users,
  76     })
  77
  78
  79 @never_cache
  80 def user(request, username=None):
  81     if username is None:
  82         if request.user.is_authenticated():
  83             user = request.user
  84         else:
  85             raise Http404
  86     else:
  87         user = get_object_or_404(User, username=username)
  88
  89     chunks_list = helpers.ChunksList(Chunk.objects.filter(
  90         user=user).order_by('book__title', 'book', 'number'))
  91
  92     return direct_to_template(request, 'catalogue/document_list.html', extra_context={
  93         'books': chunks_list,
  94         'last_books': sorted(request.session.get("wiki_last_books", {}).items(),
  95                         key=lambda x: x[1]['time'], reverse=True),
  96         'viewed_user': user,
  97         'stages': Chunk.tag_model.objects.all(),
  98     })
  99 my = login_required(active_tab('my')(user))
 100
 101
 102 @active_tab('users')
 103 def users(request):
 104     return direct_to_template(request, 'catalogue/user_list.html', extra_context={
 105         'users': User.objects.all().annotate(count=Count('chunk')).order_by(
 106             '-count', 'last_name', 'first_name'),
 107     })
 108
 109
 110 @never_cache
 111 def logout_then_redirect(request):
 112     auth.logout(request)
 113     return http.HttpResponseRedirect(urlquote_plus(request.GET.get('next', '/'), safe='/?='))
 114
 115
 116 @active_tab('create')
 117 def create_missing(request, slug=None):
 118     if slug is None:
 119         slug = ''
 120     slug = slug.replace(' ', '-')
 121
 122     if request.method == "POST":
 123         form = forms.DocumentCreateForm(request.POST, request.FILES)
 124         if form.is_valid():
 125
 126             if request.user.is_authenticated():
 127                 creator = request.user
 128             else:
 129                 creator = None
 130             book = Book.create(creator=creator,
 131                 slug=form.cleaned_data['slug'],
 132                 title=form.cleaned_data['title'],
 133                 text=form.cleaned_data['text'],
 134             )
 135
 136             return http.HttpResponseRedirect(reverse("wiki_editor", args=[book.slug]))
 137     else:
 138         form = forms.DocumentCreateForm(initial={
 139                 "slug": slug,
 140                 "title": slug.replace('-', ' ').title(),
 141         })
 142
 143     return direct_to_template(request, "catalogue/document_create_missing.html", extra_context={
 144         "slug": slug,
 145         "form": form,
 146     })
 147
 148
 149 @active_tab('upload')
 150 def upload(request):
 151     if request.method == "POST":
 152         form = forms.DocumentsUploadForm(request.POST, request.FILES)
 153         if form.is_valid():
 154             import slughifi
 155
 156             if request.user.is_authenticated():
 157                 creator = request.user
 158             else:
 159                 creator = None
 160
 161             zip = form.cleaned_data['zip']
 162             skipped_list = []
 163             ok_list = []
 164             error_list = []
 165             slugs = {}
 166             existing = [book.slug for book in Book.objects.all()]
 167             for filename in zip.namelist():
 168                 if filename[-1] == '/':
 169                     continue
 170                 title = os.path.basename(filename)[:-4]
 171                 slug = slughifi(title)
 172                 if not (slug and filename.endswith('.xml')):
 173                     skipped_list.append(filename)
 174                 elif slug in slugs:
 175                     error_list.append((filename, slug, _('Slug already used for %s' % slugs[slug])))
 176                 elif slug in existing:
 177                     error_list.append((filename, slug, _('Slug already used in repository.')))
 178                 else:
 179                     try:
 180                         zip.read(filename).decode('utf-8') # test read
 181                         ok_list.append((filename, slug, title))
 182                     except UnicodeDecodeError:
 183                         error_list.append((filename, title, _('File should be UTF-8 encoded.')))
 184                     slugs[slug] = filename
 185
 186             if not error_list:
 187                 for filename, slug, title in ok_list:
 188                     Book.create(creator=creator,
 189                         slug=slug,
 190                         title=title,
 191                         text=zip.read(filename).decode('utf-8'),
 192                     )
 193
 194             return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 195                 "form": form,
 196                 "ok_list": ok_list,
 197                 "skipped_list": skipped_list,
 198                 "error_list": error_list,
 199             })
 200     else:
 201         form = forms.DocumentsUploadForm()
 202
 203     return direct_to_template(request, "catalogue/document_upload.html", extra_context={
 204         "form": form,
 205     })
 206
 207
 208 @never_cache
 209 def book_xml(request, slug):
 210     xml = get_object_or_404(Book, slug=slug).materialize()
 211
 212     response = http.HttpResponse(xml, content_type='application/xml', mimetype='application/wl+xml')
 213     response['Content-Disposition'] = 'attachment; filename=%s.xml' % slug
 214     return response
 215
 216
 217 @never_cache
 218 def book_txt(request, slug):
 219     xml = get_object_or_404(Book, slug=slug).materialize()
 220     output = StringIO()
 221     # errors?
 222     librarian.text.transform(StringIO(xml), output)
 223     text = output.getvalue()
 224     response = http.HttpResponse(text, content_type='text/plain', mimetype='text/plain')
 225     response['Content-Disposition'] = 'attachment; filename=%s.txt' % slug
 226     return response
 227
 228
 229 @never_cache
 230 def book_html(request, slug):
 231     xml = get_object_or_404(Book, slug=slug).materialize()
 232     output = StringIO()
 233     # errors?
 234     librarian.html.transform(StringIO(xml), output, parse_dublincore=False,
 235                              flags=['full-page'])
 236     html = output.getvalue()
 237     response = http.HttpResponse(html, content_type='text/html', mimetype='text/html')
 238     return response
 239
 240
 241 @never_cache
 242 def revision(request, slug, chunk=None):
 243     try:
 244         doc = Chunk.get(slug, chunk)
 245     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 246         raise Http404
 247     return http.HttpResponse(str(doc.revision()))
 248
 249
 250 def book(request, slug):
 251     book = get_object_or_404(Book, slug=slug)
 252
 253     # TODO: most of this should go somewhere else
 254
 255     # do we need some automation?
 256     first_master = None
 257     chunks = []
 258     need_fixing = False
 259     choose_master = False
 260
 261     length = book.chunk_set.count()
 262     for i, chunk in enumerate(book):
 263         chunk_dict = {
 264             "chunk": chunk,
 265             "fix": [],
 266             "grade": ""
 267             }
 268         graded = xml_tools.GradedText(chunk.materialize())
 269         if graded.is_wl():
 270             master = graded.master()
 271             if first_master is None:
 272                 first_master = master
 273             elif master != first_master:
 274                 chunk_dict['fix'].append('bad-master')
 275
 276             if i > 0 and not graded.has_trim_begin():
 277                 chunk_dict['fix'].append('trim-begin')
 278             if i < length - 1 and not graded.has_trim_end():
 279                 chunk_dict['fix'].append('trim-end')
 280
 281             if chunk_dict['fix']:
 282                 chunk_dict['grade'] = 'wl-fix'
 283             else:
 284                 chunk_dict['grade'] = 'wl'
 285
 286         elif graded.is_broken_wl():
 287             chunk_dict['grade'] = 'wl-broken'
 288         elif graded.is_xml():
 289             chunk_dict['grade'] = 'xml'
 290         else:
 291             chunk_dict['grade'] = 'plain'
 292             chunk_dict['fix'].append('wl')
 293             choose_master = True
 294
 295         if chunk_dict['fix']:
 296             need_fixing = True
 297         chunks.append(chunk_dict)
 298
 299     if first_master or not need_fixing:
 300         choose_master = False
 301
 302     if request.method == "POST":
 303         form = forms.ChooseMasterForm(request.POST)
 304         if not choose_master or form.is_valid():
 305             if choose_master:
 306                 first_master = form.cleaned_data['master']
 307
 308             # do the actual fixing
 309             for c in chunks:
 310                 if not c['fix']:
 311                     continue
 312
 313                 text = c['chunk'].materialize()
 314                 for fix in c['fix']:
 315                     if fix == 'bad-master':
 316                         text = xml_tools.change_master(text, first_master)
 317                     elif fix == 'trim-begin':
 318                         text = xml_tools.add_trim_begin(text)
 319                     elif fix == 'trim-end':
 320                         text = xml_tools.add_trim_end(text)
 321                     elif fix == 'wl':
 322                         text = xml_tools.basic_structure(text, first_master)
 323                 author = request.user if request.user.is_authenticated() else None
 324                 description = "auto-fix: " + ", ".join(c['fix'])
 325                 c['chunk'].commit(text=text, author=author,
 326                     description=description)
 327
 328             return http.HttpResponseRedirect(book.get_absolute_url())
 329     elif choose_master:
 330         form = forms.ChooseMasterForm()
 331     else:
 332         form = None
 333
 334     return direct_to_template(request, "catalogue/book_detail.html", extra_context={
 335         "book": book,
 336         "chunks": chunks,
 337         "need_fixing": need_fixing,
 338         "choose_master": choose_master,
 339         "first_master": first_master,
 340         "form": form,
 341     })
 342
 343
 344 def chunk_add(request, slug, chunk):
 345     try:
 346         doc = Chunk.get(slug, chunk)
 347     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 348         raise Http404
 349
 350     if request.method == "POST":
 351         form = forms.ChunkAddForm(request.POST, instance=doc)
 352         if form.is_valid():
 353             if request.user.is_authenticated():
 354                 creator = request.user
 355             else:
 356                 creator = None
 357             doc.split(creator=creator,
 358                 slug=form.cleaned_data['slug'],
 359                 comment=form.cleaned_data['comment'],
 360             )
 361
 362             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 363     else:
 364         form = forms.ChunkAddForm(initial={
 365                 "slug": str(doc.number + 1),
 366                 "comment": "cz. %d" % (doc.number + 1, ),
 367         })
 368
 369     return direct_to_template(request, "catalogue/chunk_add.html", extra_context={
 370         "chunk": doc,
 371         "form": form,
 372     })
 373
 374
 375 def chunk_edit(request, slug, chunk):
 376     try:
 377         doc = Chunk.get(slug, chunk)
 378     except (Chunk.MultipleObjectsReturned, Chunk.DoesNotExist):
 379         raise Http404
 380     if request.method == "POST":
 381         form = forms.ChunkForm(request.POST, instance=doc)
 382         if form.is_valid():
 383             form.save()
 384             return http.HttpResponseRedirect(doc.book.get_absolute_url())
 385     else:
 386         form = forms.ChunkForm(instance=doc)
 387     return direct_to_template(request, "catalogue/chunk_edit.html", extra_context={
 388         "chunk": doc,
 389         "form": form,
 390     })
 391
 392
 393 def book_append(request, slug):
 394     book = get_object_or_404(Book, slug=slug)
 395     if request.method == "POST":
 396         form = forms.BookAppendForm(request.POST)
 397         if form.is_valid():
 398             append_to = form.cleaned_data['append_to']
 399             append_to.append(book)
 400             return http.HttpResponseRedirect(append_to.get_absolute_url())
 401     else:
 402         form = forms.BookAppendForm()
 403     return direct_to_template(request, "catalogue/book_append_to.html", extra_context={
 404         "book": book,
 405         "form": form,
 406     })
 407
 408
 409 def book_edit(request, slug):
 410     book = get_object_or_404(Book, slug=slug)
 411     if request.method == "POST":
 412         form = forms.BookForm(request.POST, instance=book)
 413         if form.is_valid():
 414             form.save()
 415             return http.HttpResponseRedirect(book.get_absolute_url())
 416     else:
 417         form = forms.BookForm(instance=book)
 418     return direct_to_template(request, "catalogue/book_edit.html", extra_context={
 419         "book": book,
 420         "form": form,
 421     })
 422
 423
 424 @require_POST
 425 @login_required
 426 def publish(request, slug):
 427     book = get_object_or_404(Book, slug=slug)
 428     try:
 429         book.publish(request.user)
 430     except BaseException, e:
 431         return http.HttpResponse(e)
 432     else:
 433         return http.HttpResponseRedirect(book.get_absolute_url())