From 9381e607cd902272a7ffebfe46f006eaa281216a Mon Sep 17 00:00:00 2001
From: Ben Sturmfels <ben@sturm.com.au>
Date: Fri, 13 Oct 2023 12:41:20 +1100
Subject: [PATCH] Automatically generate feed enclosure URL prefix

---
 www/podjango/feeds.py | 18 +++++++++++++++---
 www/podjango/urls.py  |  4 ++--
 2 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/www/podjango/feeds.py b/www/podjango/feeds.py
index d66fbb35..cc0c3011 100644
--- a/www/podjango/feeds.py
+++ b/www/podjango/feeds.py
@@ -17,7 +17,8 @@
 # "AGPLv3".  If not, see <http://www.gnu.org/licenses/>.
 #
 
-from django.contrib.syndication.views import Feed
+from django.contrib.sites.shortcuts import get_current_site
+from django.contrib.syndication.views import add_domain, Feed
 from django.utils.feedgenerator import Rss201rev2Feed 
 #from podjango.apps.staff.models import Person
 from podjango.apps.cast.models import Cast
@@ -181,8 +182,19 @@ class CastFeed(CastFeedBase):
     author_name = "Free as in Freedom"
     title_template = "feeds/podcast_title.html"
     description_template = "feeds/podcast_description.html"
+
+    def get_feed(self, obj, request):
+        # Enclosure (media) URLs don't automatically get the protocol and
+        # domain, but these are required for the podcast to work
+        # properly. added. This provides current_site and is_secure to the feed
+        # so that we have it in context for use in `item_enclosure_url`.
+        self.current_site = get_current_site(request)
+        self.is_secure = request.is_secure()
+        return super().get_feed(obj, request)
+
     def items(self):
         return Cast.objects.filter(pub_date__lte=datetime.now()).order_by('-pub_date')
+
     def item_pubdate(self, item):
         return item.pub_date
 
@@ -221,14 +233,14 @@ class CastFeed(CastFeedBase):
 class Mp3CastFeed(CastFeed):
     def item_enclosure_mime_type(self): return "audio/mpeg"
     def item_enclosure_url(self, item):
-        return item.mp3_path
+        return add_domain(self.current_site.domain, item.mp3_path, self.is_secure)
     def item_enclosure_length(self, item):
         return item.mp3_length
 
 class OggCastFeed(CastFeed):
     def item_enclosure_mime_type(self): return "audio/ogg"
     def item_enclosure_url(self, item):
-        return item.ogg_path
+        return add_domain(self.current_site.domain, item.ogg_path, self.is_secure)
     def item_enclosure_length(self, item):
         return item.ogg_length
 
diff --git a/www/podjango/urls.py b/www/podjango/urls.py
index c4d8b0c6..86a9440d 100644
--- a/www/podjango/urls.py
+++ b/www/podjango/urls.py
@@ -33,8 +33,8 @@ app_name = 'podjango'
 urlpatterns = [
     url(r'^$', frontpage.view),
     url(r'^cast/', include('podjango.apps.cast.urls')),
-    url(r'^feeds/cast-ogg/$', Mp3CastFeed(), name='feed-ogg'),
-    url(r'^feeds/cast-mp3/$', OggCastFeed(), name='feed-mp3'),
+    url(r'^feeds/cast-ogg/$', OggCastFeed(), name='feed-ogg'),
+    url(r'^feeds/cast-mp3/$', Mp3CastFeed(), name='feed-mp3'),
     url(r'^feeds/$', view, name='feeds'),
 ]