302 for main

[wolnelektury.git] / apps / catalogue / feeds.py

diff --git a/apps/catalogue/feeds.py b/apps/catalogue/feeds.py
index 8869668..836202a 100644 (file)
--- a/apps/catalogue/feeds.py
+++ b/apps/catalogue/feeds.py
@@ -2,429 +2,83 @@
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #

-
-#############################################################################
-# from: http://djangosnippets.org/snippets/243/
-
-import base64
-
-from django.http import HttpResponse
-from django.contrib.auth import authenticate, login
-
-#
-def view_or_basicauth(view, request, test_func, realm = "", *args, **kwargs):
-    """
-    This is a helper function used by 'logged_in_or_basicauth' and
-    'has_perm_or_basicauth' (deleted) that does the nitty of determining if they
-    are already logged in or if they have provided proper http-authorization
-    and returning the view if all goes well, otherwise responding with a 401.
-    """
-    if test_func(request.user):
-        # Already logged in, just return the view.
-        #
-        return view(request, *args, **kwargs)
-
-    # They are not logged in. See if they provided login credentials
-    #
-    if 'HTTP_AUTHORIZATION' in request.META:
-        auth = request.META['HTTP_AUTHORIZATION'].split()
-        if len(auth) == 2:
-            # NOTE: We are only support basic authentication for now.
-            #
-            if auth[0].lower() == "basic":
-                uname, passwd = base64.b64decode(auth[1]).split(':')
-                user = authenticate(username=uname, password=passwd)
-                if user is not None:
-                    if user.is_active:
-                        login(request, user)
-                        request.user = user
-                        return view(request, *args, **kwargs)
-
-    # Either they did not provide an authorization header or
-    # something in the authorization attempt failed. Send a 401
-    # back to them to ask them to authenticate.
-    #
-    response = HttpResponse()
-    response.status_code = 401
-    response['WWW-Authenticate'] = 'Basic realm="%s"' % realm
-    return response
-    
-
-#
-def logged_in_or_basicauth(realm = ""):
-    """
-    A simple decorator that requires a user to be logged in. If they are not
-    logged in the request is examined for a 'authorization' header.
-
-    If the header is present it is tested for basic authentication and
-    the user is logged in with the provided credentials.
-
-    If the header is not present a http 401 is sent back to the
-    requestor to provide credentials.
-
-    The purpose of this is that in several django projects I have needed
-    several specific views that need to support basic authentication, yet the
-    web site as a whole used django's provided authentication.
-
-    The uses for this are for urls that are access programmatically such as
-    by rss feed readers, yet the view requires a user to be logged in. Many rss
-    readers support supplying the authentication credentials via http basic
-    auth (and they do NOT support a redirect to a form where they post a
-    username/password.)
-
-    Use is simple:
-
-    @logged_in_or_basicauth
-    def your_view:
-        ...
-
-    You can provide the name of the realm to ask for authentication within.
-    """
-    def view_decorator(func):
-        def wrapper(request, *args, **kwargs):
-            return view_or_basicauth(func, request,
-                                     lambda u: u.is_authenticated(),
-                                     realm, *args, **kwargs)
-        return wrapper
-    return view_decorator
-
-
-#############################################################################
-
-
-from base64 import b64encode
-import os.path
-
+from django.contrib.sites.models import Site

 from django.contrib.syndication.views import Feed
 from django.core.urlresolvers import reverse
 from django.contrib.syndication.views import Feed
 from django.core.urlresolvers import reverse

-from django.shortcuts import get_object_or_404
-from django.utils.feedgenerator import Atom1Feed
-from django.conf import settings
-from django.http import Http404
-from django.contrib.sites.models import Site
-
-from catalogue.models import Book, Tag
-
-
-_root_feeds = (
-    {
-        u"category": u"",
-        u"link": u"opds_user",
-        u"link_args": [],
-        u"title": u"Moje półki",
-        u"description": u"Półki użytkownika dostępne po zalogowaniu"
-    },
-    {
-        u"category": u"author",
-        u"link": u"opds_by_category",
-        u"link_args": [u"author"],
-        u"title": u"Autorzy",
-        u"description": u"Utwory wg autorów"
-    },
-    {
-        u"category": u"kind",
-        u"link": u"opds_by_category",
-        u"link_args": [u"kind"],
-        u"title": u"Rodzaje",
-        u"description": u"Utwory wg rodzajów"
-    },
-    {
-        u"category": u"genre",
-        u"link": u"opds_by_category",
-        u"link_args": [u"genre"],
-        u"title": u"Gatunki",
-        u"description": u"Utwory wg gatunków"
-    },
-    {
-        u"category": u"epoch",
-        u"link": u"opds_by_category",
-        u"link_args": [u"epoch"],
-        u"title": u"Epoki",
-        u"description": u"Utwory wg epok"
-    },
-)
-
-
-def factory_decorator(decorator):
-    """ generates a decorator for a function factory class
-    if A(*) == f, factory_decorator(D)(A)(*) == D(f)
-    """
-    def fac_dec(func):
-        def wrapper(*args, **kwargs):
-            return decorator(func(*args, **kwargs))
-        return wrapper
-    return fac_dec
+from django.db.models import Q

 
 

+from catalogue import models

 
 

-class OPDSFeed(Atom1Feed):
-    link_rel = u"subsection"
-    link_type = u"application/atom+xml"
+def absolute_url(url):
+    return "http://%s%s" % (Site.objects.get_current().domain, url)

 
 

-    _book_parent_img = "http://%s%s" % (Site.objects.get_current().domain, os.path.join(settings.STATIC_URL, "img/book-parent.png"))
-    try:
-        _book_parent_img_size = unicode(os.path.getsize(os.path.join(settings.STATIC_ROOT, "img/book-parent.png")))
-    except:
-        _book_parent_img_size = ''

 
 

-    _book_img = "http://%s%s" % (Site.objects.get_current().domain, os.path.join(settings.STATIC_URL, "img/book.png"))
-    try:
-        _book_img_size = unicode(os.path.getsize(os.path.join(settings.STATIC_ROOT, "img/book.png")))
-    except:
-        _book_img_size = ''
+class AudiobookFeed(Feed):
+    description = "Audiobooki ostatnio dodane do serwisu Wolne Lektury."

 
 

-    def add_root_elements(self, handler):
-        super(OPDSFeed, self).add_root_elements(handler)
-        handler.addQuickElement(u"link", u"", {u"href": reverse("opds_authors"), u"rel": u"start", u"type": u"application/atom+xml"})
+    mime_types = {
+        'mp3': 'audio/mpeg',
+        'ogg': 'audio/ogg',
+        'daisy': 'application/zip',
+    }

 
 

+    titles = {
+        'all': 'WolneLektury.pl - audiobooki we wszystkich formatach',
+        'mp3': 'WolneLektury.pl - audiobooki w formacie MP3',
+        'ogg': 'WolneLektury.pl - audiobooki w formacie Ogg Vorbis',
+        'daisy': 'WolneLektury.pl - audiobooki w formacie DAISY',
+    }

 
 

-    def add_item_elements(self, handler, item):
-        """ modified from Atom1Feed.add_item_elements """
-        handler.addQuickElement(u"title", item['title'])
+    def get_object(self, request, type):
+        return {'type': type, 'all': 'all' in request.GET}

 
 

-        # add a OPDS Navigation link if there's no enclosure
-        if item['enclosure'] is None:
-            handler.addQuickElement(u"link", u"", {u"href": item['link'], u"rel": u"subsection", u"type": u"application/atom+xml"})
-            # add a "green book" icon
-            handler.addQuickElement(u"link", '',
-                {u"rel": u"http://opds-spec.org/thumbnail",
-                 u"href": self._book_parent_img,
-                 u"length": self._book_parent_img_size,
-                 u"type": u"image/png"})
-        if item['pubdate'] is not None:
-            handler.addQuickElement(u"updated", rfc3339_date(item['pubdate']).decode('utf-8'))
+    def title(self, args):
+        return self.titles[args['type']]

 
 

-        # Author information.
-        if item['author_name'] is not None:
-            handler.startElement(u"author", {})
-            handler.addQuickElement(u"name", item['author_name'])
-            if item['author_email'] is not None:
-                handler.addQuickElement(u"email", item['author_email'])
-            if item['author_link'] is not None:
-                handler.addQuickElement(u"uri", item['author_link'])
-            handler.endElement(u"author")
+    def link(self, args):
+        return reverse('audiobook_feed', args=(args['type'],))

 
 

-        # Unique ID.
-        if item['unique_id'] is not None:
-            unique_id = item['unique_id']
+    def items(self, args):
+        objects = models.BookMedia.objects.order_by('-uploaded_at')
+        if type == 'all':
+            objects = objects.filter(type__in=('mp3', 'ogg', 'daisy'))

         else:
         else:

-            unique_id = get_tag_uri(item['link'], item['pubdate'])
-        handler.addQuickElement(u"id", unique_id)
-
-        # Summary.
-        # OPDS needs type=text
-        if item['description'] is not None:
-            handler.addQuickElement(u"summary", item['description'], {u"type": u"text"})
-
-        # Enclosure as OPDS Acquisition Link
-        if item['enclosure'] is not None:
-            handler.addQuickElement(u"link", '',
-                {u"rel": u"http://opds-spec.org/acquisition",
-                 u"href": item['enclosure'].url,
-                 u"length": item['enclosure'].length,
-                 u"type": item['enclosure'].mime_type})
-            # add a "red book" icon
-            handler.addQuickElement(u"link", '',
-                {u"rel": u"http://opds-spec.org/thumbnail",
-                 u"href": self._book_img,
-                 u"length": self._book_img_size,
-                 u"type": u"image/png"})
-
-        # Categories.
-        for cat in item['categories']:
-            handler.addQuickElement(u"category", u"", {u"term": cat})
-
-        # Rights.
-        if item['item_copyright'] is not None:
-            handler.addQuickElement(u"rights", item['item_copyright'])
-
-
-class RootFeed(Feed):
-    feed_type = OPDSFeed
-    title = u'Wolne Lektury'
-    link = u'http://www.wolnelektury.pl/'
-    description = u"Spis utworów na stronie http://WolneLektury.pl"
-    author_name = u"Wolne Lektury"
-    author_link = u"http://www.wolnelektury.pl/"
-
-    def items(self):
-        return _root_feeds
-
-    def item_title(self, item):
-        return item['title']
-
-    def item_link(self, item):
-        return reverse(item['link'], args=item['link_args'])
-
-    def item_description(self, item):
-        return item['description']
-
-
-class ByCategoryFeed(Feed):
-    feed_type = OPDSFeed
-    link = u'http://www.wolnelektury.pl/'
-    description = u"Spis utworów na stronie http://WolneLektury.pl"
-    author_name = u"Wolne Lektury"
-    author_link = u"http://www.wolnelektury.pl/"
-
-    def get_object(self, request, category):
-        feed = [feed for feed in _root_feeds if feed['category']==category]
-        if feed:
-            feed = feed[0]
-        else:
-            raise Http404
-
-        return feed
-
-    def title(self, feed):
-        return feed['title']
-
-    def items(self, feed):
-        return (tag for tag in Tag.objects.filter(category=feed['category']) if tag.get_count() > 0)
+            objects = objects.filter(type=args['type'])
+        if not args['all']:
+            objects = objects[:50]
+        return objects

 
     def item_title(self, item):
         return item.name
 
 
     def item_title(self, item):
         return item.name
 

-    def item_link(self, item):
-        return reverse("opds_by_tag", args=[item.category, item.slug])
-
-    def item_description(self):
-        return u''
-
-
-class ByTagFeed(Feed):
-    feed_type = OPDSFeed
-    link = u'http://www.wolnelektury.pl/'
-    item_enclosure_mime_type = "application/epub+zip"
-    author_name = u"Wolne Lektury"
-    author_link = u"http://www.wolnelektury.pl/"
-
-    def link(self, tag):
-        return tag.get_absolute_url()
-
-    def title(self, tag):
-        return tag.name
-
-    def description(self, tag):
-        return u"Spis utworów na stronie http://WolneLektury.pl"
-
-    def get_object(self, request, category, slug):
-        return get_object_or_404(Tag, category=category, slug=slug)
-
-    def items(self, tag):
-        books = Book.tagged.with_any([tag])
-        l_tags = Tag.objects.filter(category='book', slug__in=[book.book_tag_slug() for book in books])
-        descendants_keys = [book.pk for book in Book.tagged.with_any(l_tags)]
-        if descendants_keys:
-            books = books.exclude(pk__in=descendants_keys)
-
-        return books
-
-    def item_title(self, book):
-        return book.title
-
-    def item_description(self):
-        return u''
-
-    def item_link(self, book):
-        return book.get_absolute_url()
-
-    def item_author_name(self, book):
-        try:
-            return book.tags.filter(category='author')[0].name
-        except KeyError:
-            return u''
-
-    def item_author_link(self, book):
-        try:
-            return book.tags.filter(category='author')[0].get_absolute_url()
-        except KeyError:
-            return u''
-
-    def item_enclosure_url(self, book):
-        return "http://%s%s" % (Site.objects.get_current().domain, book.root_ancestor.epub_file.url)
+    def item_categories(self, item):
+        return sorted(set(author.name for author in 
+                            item.book.tags.filter(category='author')))

 
 

-    def item_enclosure_length(self, book):
-        return book.root_ancestor.epub_file.size
-
-
-@factory_decorator(logged_in_or_basicauth())
-class UserFeed(Feed):
-    feed_type = OPDSFeed
-    link = u'http://www.wolnelektury.pl/'
-    description = u"Półki użytkownika na stronie http://WolneLektury.pl"
-    author_name = u"Wolne Lektury"
-    author_link = u"http://www.wolnelektury.pl/"
-
-    def get_object(self, request):
-        return request.user
-
-    def title(self, user):
-        return u"Półki użytkownika %s" % user.username
-
-    def items(self, user):
-        return (tag for tag in Tag.objects.filter(category='set', user=user) if tag.get_count() > 0)
-
-    def item_title(self, item):
-        return item.name
+    def item_description(self, item):
+        lines = []
+        artist = item.get_extra_info_value().get('artist_name', None)
+        if artist is not None:
+            lines.append(u'Czyta: %s' % artist)
+        director = item.get_extra_info_value().get('artist_name', None)
+        if director is not None:
+            lines.append(u'Reżyseruje: %s' % director)
+        return u'<br/>\n'.join(lines)

 
     def item_link(self, item):
 
     def item_link(self, item):

-        return reverse("opds_user_set", args=[item.slug])
-
-    def item_description(self):
-        return u''
-
-
-@factory_decorator(logged_in_or_basicauth())
-class UserSetFeed(Feed):
-    feed_type = OPDSFeed
-    link = u'http://www.wolnelektury.pl/'
-    item_enclosure_mime_type = "application/epub+zip"
-    author_name = u"Wolne Lektury"
-    author_link = u"http://www.wolnelektury.pl/"
-
-    def link(self, tag):
-        return tag.get_absolute_url()
-
-    def title(self, tag):
-        return tag.name
-
-    def description(self, tag):
-        return u"Spis utworów na stronie http://WolneLektury.pl"
-
-    def get_object(self, request, slug):
-        return get_object_or_404(Tag, category='set', slug=slug, user=request.user)
-
-    def items(self, tag):
-        return Book.tagged.with_any([tag])
-
-    def item_title(self, book):
-        return book.title
-
-    def item_description(self):
-        return u''
-
-    def item_link(self, book):
-        return book.get_absolute_url()
-
-    def item_author_name(self, book):
-        try:
-            return book.tags.filter(category='author')[0].name
-        except KeyError:
-            return u''
+        return item.book.get_absolute_url()

 
 

-    def item_author_link(self, book):
-        try:
-            return book.tags.filter(category='author')[0].get_absolute_url()
-        except KeyError:
-            return u''
+    def item_guid(self, item):
+        return absolute_url(item.file.url)

 
 

-    def item_enclosure_url(self, book):
-        return "http://%s%s" % (Site.objects.get_current().domain, book.root_ancestor.epub_file.url)
+    def item_enclosure_url(self, item):
+        return absolute_url(item.file.url)

 
 

-    def item_enclosure_length(self, book):
-        return book.root_ancestor.epub_file.size
+    def item_enclosure_length(self, item):
+        return item.file.size

 
 

-@logged_in_or_basicauth()
-def user_set_feed(request):
-    return UserSetFeed()(request)
+    def item_enclosure_mime_type(self, item):
+        return self.mime_types[item.type]

 
 

+    def item_pubdate(self, item):
+        return item.uploaded_at