mediagoblin/user_pages/views.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 import logging
  18 import datetime
  19
  20 from mediagoblin import messages, mg_globals
  21 from mediagoblin.db.models import (MediaEntry, Collection, CollectionItem,
  22                                        User)
  23 from mediagoblin.tools.response import render_to_response, render_404, redirect
  24 from mediagoblin.tools.translate import pass_to_ugettext as _
  25 from mediagoblin.tools.pagination import Pagination
  26 from mediagoblin.tools.files import delete_media_files
  27 from mediagoblin.user_pages import forms as user_forms
  28 from mediagoblin.user_pages.lib import send_comment_email
  29
  30 from mediagoblin.decorators import (uses_pagination, get_user_media_entry,
  31     require_active_login, user_may_delete_media, user_may_alter_collection,
  32     get_user_collection, get_user_collection_item, active_user_from_url)
  33
  34 from werkzeug.contrib.atom import AtomFeed
  35
  36
  37 _log = logging.getLogger(__name__)
  38 _log.setLevel(logging.DEBUG)
  39
  40
  41 @uses_pagination
  42 def user_home(request, page):
  43     """'Homepage' of a User()"""
  44     # TODO: decide if we only want homepages for active users, we can
  45     # then use the @get_active_user decorator and also simplify the
  46     # template html.
  47     user = User.query.filter_by(username=request.matchdict['user']).first()
  48     if not user:
  49         return render_404(request)
  50     elif user.status != u'active':
  51         return render_to_response(
  52             request,
  53             'mediagoblin/user_pages/user.html',
  54             {'user': user})
  55
  56     cursor = MediaEntry.query.\
  57         filter_by(uploader = user.id,
  58                   state = u'processed').order_by(MediaEntry.created.desc())
  59
  60     pagination = Pagination(page, cursor)
  61     media_entries = pagination()
  62
  63     #if no data is available, return NotFound
  64     if media_entries == None:
  65         return render_404(request)
  66
  67     user_gallery_url = request.urlgen(
  68         'mediagoblin.user_pages.user_gallery',
  69         user=user.username)
  70
  71     return render_to_response(
  72         request,
  73         'mediagoblin/user_pages/user.html',
  74         {'user': user,
  75          'user_gallery_url': user_gallery_url,
  76          'media_entries': media_entries,
  77          'pagination': pagination})
  78
  79
  80 @active_user_from_url
  81 @uses_pagination
  82 def user_gallery(request, page, url_user=None):
  83     """'Gallery' of a User()"""
  84     cursor = MediaEntry.query.filter_by(
  85         uploader=url_user.id,
  86         state=u'processed').order_by(MediaEntry.created.desc())
  87
  88     # Paginate gallery
  89     pagination = Pagination(page, cursor)
  90     media_entries = pagination()
  91
  92     #if no data is available, return NotFound
  93     # TODO: Should we really also return 404 for empty galleries?
  94     if media_entries == None:
  95         return render_404(request)
  96
  97     return render_to_response(
  98         request,
  99         'mediagoblin/user_pages/gallery.html',
 100         {'user': url_user,
 101          'media_entries': media_entries,
 102          'pagination': pagination})
 103
 104 MEDIA_COMMENTS_PER_PAGE = 50
 105
 106
 107 @get_user_media_entry
 108 @uses_pagination
 109 def media_home(request, media, page, **kwargs):
 110     """
 111     'Homepage' of a MediaEntry()
 112     """
 113     if request.matchdict.get('comment', None):
 114         pagination = Pagination(
 115             page, media.get_comments(
 116                 mg_globals.app_config['comments_ascending']),
 117             MEDIA_COMMENTS_PER_PAGE,
 118             request.matchdict.get('comment'))
 119     else:
 120         pagination = Pagination(
 121             page, media.get_comments(
 122                 mg_globals.app_config['comments_ascending']),
 123             MEDIA_COMMENTS_PER_PAGE)
 124
 125     comments = pagination()
 126
 127     comment_form = user_forms.MediaCommentForm(request.form)
 128
 129     media_template_name = media.media_manager['display_template']
 130
 131     return render_to_response(
 132         request,
 133         media_template_name,
 134         {'media': media,
 135          'comments': comments,
 136          'pagination': pagination,
 137          'comment_form': comment_form,
 138          'app_config': mg_globals.app_config})
 139
 140
 141 @get_user_media_entry
 142 @require_active_login
 143 def media_post_comment(request, media):
 144     """
 145     recieves POST from a MediaEntry() comment form, saves the comment.
 146     """
 147     assert request.method == 'POST'
 148
 149     comment = request.db.MediaComment()
 150     comment.media_entry = media.id
 151     comment.author = request.user.id
 152     comment.content = unicode(request.form['comment_content'])
 153
 154     if not comment.content.strip():
 155         messages.add_message(
 156             request,
 157             messages.ERROR,
 158             _("Oops, your comment was empty."))
 159     else:
 160         comment.save()
 161
 162         messages.add_message(
 163             request, messages.SUCCESS,
 164             _('Your comment has been posted!'))
 165
 166         media_uploader = media.get_uploader
 167         #don't send email if you comment on your own post
 168         if (comment.author != media_uploader and
 169             media_uploader.wants_comment_notification):
 170             send_comment_email(media_uploader, comment, media, request)
 171
 172     return redirect(request, location=media.url_for_self(request.urlgen))
 173
 174
 175 @get_user_media_entry
 176 @require_active_login
 177 def media_collect(request, media):
 178     """Add media to collection submission"""
 179
 180     form = user_forms.MediaCollectForm(request.form)
 181     # A user's own collections:
 182     form.collection.query = Collection.query.filter_by(
 183         creator = request.user.id).order_by(Collection.title)
 184
 185     if request.method != 'POST' or not form.validate():
 186         # No POST submission, or invalid form
 187         if not form.validate():
 188             messages.add_message(request, messages.ERROR,
 189                 _('Please check your entries and try again.'))
 190
 191         return render_to_response(
 192             request,
 193             'mediagoblin/user_pages/media_collect.html',
 194             {'media': media,
 195              'form': form})
 196
 197     # If we are here, method=POST and the form is valid, submit things.
 198     # If the user is adding a new collection, use that:
 199     if request.form['collection_title']:
 200         # Make sure this user isn't duplicating an existing collection
 201         existing_collection = Collection.query.filter_by(
 202                                 creator=request.user.id,
 203                                 title=request.form['collection_title']).first()
 204         if existing_collection:
 205             messages.add_message(request, messages.ERROR,
 206                 _('You already have a collection called "%s"!'
 207                   % collection.title))
 208             return redirect(request, "mediagoblin.user_pages.media_home",
 209                             user=request.user.username,
 210                             media=media.id)
 211
 212         collection = Collection()
 213         collection.title = request.form['collection_title']
 214         collection.description = request.form.get('collection_description')
 215         collection.creator = request.user.id
 216         collection.generate_slug()
 217         collection.save()
 218
 219     # Otherwise, use the collection selected from the drop-down
 220     else:
 221         collection = Collection.query.filter_by(
 222             id=request.form.get('collection')).first()
 223
 224     # Make sure the user actually selected a collection
 225     if not collection:
 226         messages.add_message(
 227             request, messages.ERROR,
 228             _('You have to select or add a collection'))
 229
 230     # Check whether media already exists in collection
 231     elif CollectionItem.query.filter_by(
 232         media_entry=media.id,
 233         collection=collection.id).first():
 234         messages.add_message(request, messages.ERROR,
 235             _('"%s" already in collection "%s"'
 236                 % (media.title, collection.title)))
 237     else: # Add item to collection
 238         collection_item = request.db.CollectionItem()
 239         collection_item.collection = collection.id
 240         collection_item.media_entry = media.id
 241         collection_item.author = request.user.id
 242         collection_item.note = request.form['note']
 243         collection_item.save()
 244
 245         collection.items = collection.items + 1
 246         collection.save()
 247
 248         media.collected = media.collected + 1
 249         media.save()
 250
 251         messages.add_message(request, messages.SUCCESS,
 252                              _('"%s" added to collection "%s"'
 253                                % (media.title, collection.title)))
 254
 255     return redirect(request, "mediagoblin.user_pages.media_home",
 256                     user=media.get_uploader.username,
 257                     media=media.id)
 258
 259
 260 #TODO: Why does @user_may_delete_media not implicate @require_active_login?
 261 @get_user_media_entry
 262 @require_active_login
 263 @user_may_delete_media
 264 def media_confirm_delete(request, media):
 265
 266     form = user_forms.ConfirmDeleteForm(request.form)
 267
 268     if request.method == 'POST' and form.validate():
 269         if form.confirm.data is True:
 270             username = media.get_uploader.username
 271
 272             # Delete all the associated comments
 273             for comment in media.get_comments():
 274                 comment.delete()
 275
 276             # Delete all files on the public storage
 277             try:
 278                 delete_media_files(media)
 279             except OSError, error:
 280                 _log.error('No such files from the user "{1}"'
 281                            ' to delete: {0}'.format(str(error), username))
 282                 messages.add_message(request, messages.ERROR,
 283                                      _('Some of the files with this entry seem'
 284                                        ' to be missing.  Deleting anyway.'))
 285
 286             media.delete()
 287             messages.add_message(
 288                 request, messages.SUCCESS, _('You deleted the media.'))
 289
 290             return redirect(request, "mediagoblin.user_pages.user_home",
 291                 user=username)
 292         else:
 293             messages.add_message(
 294                 request, messages.ERROR,
 295                 _("The media was not deleted because you didn't check that you were sure."))
 296             return redirect(request,
 297                             location=media.url_for_self(request.urlgen))
 298
 299     if ((request.user.is_admin and
 300          request.user.id != media.uploader)):
 301         messages.add_message(
 302             request, messages.WARNING,
 303             _("You are about to delete another user's media. "
 304               "Proceed with caution."))
 305
 306     return render_to_response(
 307         request,
 308         'mediagoblin/user_pages/media_confirm_delete.html',
 309         {'media': media,
 310          'form': form})
 311
 312
 313 @active_user_from_url
 314 @uses_pagination
 315 def user_collection(request, page, url_user=None):
 316     """A User-defined Collection"""
 317     collection = Collection.query.filter_by(
 318         get_creator=url_user,
 319         slug=request.matchdict['collection']).first()
 320
 321     cursor = collection.get_collection_items()
 322
 323     pagination = Pagination(page, cursor)
 324     collection_items = pagination()
 325
 326     # if no data is available, return NotFound
 327     # TODO: Should an empty collection really also return 404?
 328     if collection_items == None:
 329         return render_404(request)
 330
 331     return render_to_response(
 332         request,
 333         'mediagoblin/user_pages/collection.html',
 334         {'user': url_user,
 335          'collection': collection,
 336          'collection_items': collection_items,
 337          'pagination': pagination})
 338
 339
 340 @active_user_from_url
 341 def collection_list(request, url_user=None):
 342     """A User-defined Collection"""
 343     collections = Collection.query.filter_by(
 344         get_creator=url_user)
 345
 346     return render_to_response(
 347         request,
 348         'mediagoblin/user_pages/collection_list.html',
 349         {'user': url_user,
 350          'collections': collections})
 351
 352
 353 @get_user_collection_item
 354 @require_active_login
 355 @user_may_alter_collection
 356 def collection_item_confirm_remove(request, collection_item):
 357
 358     form = user_forms.ConfirmCollectionItemRemoveForm(request.form)
 359
 360     if request.method == 'POST' and form.validate():
 361         username = collection_item.in_collection.get_creator.username
 362         collection = collection_item.in_collection
 363
 364         if form.confirm.data is True:
 365             entry = collection_item.get_media_entry
 366             entry.collected = entry.collected - 1
 367             entry.save()
 368
 369             collection_item.delete()
 370             collection.items = collection.items - 1
 371             collection.save()
 372
 373             messages.add_message(
 374                 request, messages.SUCCESS, _('You deleted the item from the collection.'))
 375         else:
 376             messages.add_message(
 377                 request, messages.ERROR,
 378                 _("The item was not removed because you didn't check that you were sure."))
 379
 380         return redirect(request, "mediagoblin.user_pages.user_collection",
 381                         user=username,
 382                         collection=collection.slug)
 383
 384     if ((request.user.is_admin and
 385          request.user.id != collection_item.in_collection.creator)):
 386         messages.add_message(
 387             request, messages.WARNING,
 388             _("You are about to delete an item from another user's collection. "
 389               "Proceed with caution."))
 390
 391     return render_to_response(
 392         request,
 393         'mediagoblin/user_pages/collection_item_confirm_remove.html',
 394         {'collection_item': collection_item,
 395          'form': form})
 396
 397
 398 @get_user_collection
 399 @require_active_login
 400 @user_may_alter_collection
 401 def collection_confirm_delete(request, collection):
 402
 403     form = user_forms.ConfirmDeleteForm(request.form)
 404
 405     if request.method == 'POST' and form.validate():
 406
 407         username = collection.get_creator.username
 408
 409         if form.confirm.data is True:
 410             collection_title = collection.title
 411
 412             # Delete all the associated collection items
 413             for item in collection.get_collection_items():
 414                 entry = item.get_media_entry
 415                 entry.collected = entry.collected - 1
 416                 entry.save()
 417                 item.delete()
 418
 419             collection.delete()
 420             messages.add_message(
 421                 request, messages.SUCCESS, _('You deleted the collection "%s"' % collection_title))
 422
 423             return redirect(request, "mediagoblin.user_pages.user_home",
 424                 user=username)
 425         else:
 426             messages.add_message(
 427                 request, messages.ERROR,
 428                 _("The collection was not deleted because you didn't check that you were sure."))
 429
 430             return redirect(request, "mediagoblin.user_pages.user_collection",
 431                             user=username,
 432                             collection=collection.slug)
 433
 434     if ((request.user.is_admin and
 435          request.user.id != collection.creator)):
 436         messages.add_message(
 437             request, messages.WARNING,
 438             _("You are about to delete another user's collection. "
 439               "Proceed with caution."))
 440
 441     return render_to_response(
 442         request,
 443         'mediagoblin/user_pages/collection_confirm_delete.html',
 444         {'collection': collection,
 445          'form': form})
 446
 447
 448 ATOM_DEFAULT_NR_OF_UPDATED_ITEMS = 15
 449
 450
 451 def atom_feed(request):
 452     """
 453     generates the atom feed with the newest images
 454     """
 455     user = User.query.filter_by(
 456         username = request.matchdict['user'],
 457         status = u'active').first()
 458     if not user:
 459         return render_404(request)
 460
 461     cursor = MediaEntry.query.filter_by(
 462         uploader = user.id,
 463         state = u'processed').\
 464         order_by(MediaEntry.created.desc()).\
 465         limit(ATOM_DEFAULT_NR_OF_UPDATED_ITEMS)
 466
 467     """
 468     ATOM feed id is a tag URI (see http://en.wikipedia.org/wiki/Tag_URI)
 469     """
 470     atomlinks = [{
 471            'href': request.urlgen(
 472                'mediagoblin.user_pages.user_home',
 473                qualified=True, user=request.matchdict['user']),
 474            'rel': 'alternate',
 475            'type': 'text/html'
 476            }]
 477
 478     if mg_globals.app_config["push_urls"]:
 479         for push_url in mg_globals.app_config["push_urls"]:
 480             atomlinks.append({
 481                 'rel': 'hub',
 482                 'href': push_url})
 483
 484     feed = AtomFeed(
 485                "MediaGoblin: Feed for user '%s'" % request.matchdict['user'],
 486                feed_url=request.url,
 487                id='tag:{host},{year}:gallery.user-{user}'.format(
 488                    host=request.host,
 489                    year=datetime.datetime.today().strftime('%Y'),
 490                    user=request.matchdict['user']),
 491                links=atomlinks)
 492
 493     for entry in cursor:
 494         feed.add(entry.get('title'),
 495             entry.description_html,
 496             id=entry.url_for_self(request.urlgen, qualified=True),
 497             content_type='html',
 498             author={
 499                 'name': entry.get_uploader.username,
 500                 'uri': request.urlgen(
 501                     'mediagoblin.user_pages.user_home',
 502                     qualified=True, user=entry.get_uploader.username)},
 503             updated=entry.get('created'),
 504             links=[{
 505                 'href': entry.url_for_self(
 506                     request.urlgen,
 507                     qualified=True),
 508                 'rel': 'alternate',
 509                 'type': 'text/html'}])
 510
 511     return feed.get_response()
 512
 513
 514 def collection_atom_feed(request):
 515     """
 516     generates the atom feed with the newest images from a collection
 517     """
 518     user = User.query.filter_by(
 519         username = request.matchdict['user'],
 520         status = u'active').first()
 521     if not user:
 522         return render_404(request)
 523
 524     collection = Collection.query.filter_by(
 525                creator=user.id,
 526                slug=request.matchdict['collection']).first()
 527
 528     cursor = CollectionItem.query.filter_by(
 529                  collection=collection.id) \
 530                  .order_by(CollectionItem.added.desc()) \
 531                  .limit(ATOM_DEFAULT_NR_OF_UPDATED_ITEMS)
 532
 533     """
 534     ATOM feed id is a tag URI (see http://en.wikipedia.org/wiki/Tag_URI)
 535     """
 536     atomlinks = [{
 537            'href': request.urlgen(
 538                'mediagoblin.user_pages.user_collection',
 539                qualified=True, user=request.matchdict['user'], collection=collection.slug),
 540            'rel': 'alternate',
 541            'type': 'text/html'
 542            }]
 543
 544     if mg_globals.app_config["push_urls"]:
 545         for push_url in mg_globals.app_config["push_urls"]:
 546             atomlinks.append({
 547                 'rel': 'hub',
 548                 'href': push_url})
 549
 550     feed = AtomFeed(
 551                "MediaGoblin: Feed for %s's collection %s" % (request.matchdict['user'], collection.title),
 552                feed_url=request.url,
 553                id='tag:{host},{year}:collection.user-{user}.title-{title}'.format(
 554                    host=request.host,
 555                    year=datetime.datetime.today().strftime('%Y'),
 556                    user=request.matchdict['user'],
 557                    title=collection.title),
 558                links=atomlinks)
 559
 560     for item in cursor:
 561         entry = item.get_media_entry
 562         feed.add(entry.get('title'),
 563             item.note_html,
 564             id=entry.url_for_self(request.urlgen, qualified=True),
 565             content_type='html',
 566             author={
 567                 'name': entry.get_uploader.username,
 568                 'uri': request.urlgen(
 569                     'mediagoblin.user_pages.user_home',
 570                     qualified=True, user=entry.get_uploader.username)},
 571             updated=item.get('added'),
 572             links=[{
 573                 'href': entry.url_for_self(
 574                     request.urlgen,
 575                     qualified=True),
 576                 'rel': 'alternate',
 577                 'type': 'text/html'}])
 578
 579     return feed.get_response()
 580
 581
 582 @require_active_login
 583 def processing_panel(request):
 584     """
 585     Show to the user what media is still in conversion/processing...
 586     and what failed, and why!
 587     """
 588     user = User.query.filter_by(username=request.matchdict['user']).first()
 589     # TODO: XXX: Should this be a decorator?
 590     #
 591     # Make sure we have permission to access this user's panel.  Only
 592     # admins and this user herself should be able to do so.
 593     if not (user.id == request.user.id or request.user.is_admin):
 594         # No?  Simply redirect to this user's homepage.
 595         return redirect(
 596             request, 'mediagoblin.user_pages.user_home',
 597             user=user.username)
 598
 599     # Get media entries which are in-processing
 600     processing_entries = MediaEntry.query.\
 601         filter_by(uploader = user.id,
 602                   state = u'processing').\
 603         order_by(MediaEntry.created.desc())
 604
 605     # Get media entries which have failed to process
 606     failed_entries = MediaEntry.query.\
 607         filter_by(uploader = user.id,
 608                   state = u'failed').\
 609         order_by(MediaEntry.created.desc())
 610
 611     processed_entries = MediaEntry.query.\
 612         filter_by(uploader = user.id,
 613                   state = u'processed').\
 614         order_by(MediaEntry.created.desc()).\
 615         limit(10)
 616
 617     # Render to response
 618     return render_to_response(
 619         request,
 620         'mediagoblin/user_pages/processing_panel.html',
 621         {'user': user,
 622          'processing_entries': processing_entries,
 623          'failed_entries': failed_entries,
 624          'processed_entries': processed_entries})