[podcasts] Add podcast aggregation widget

vrobbler/apps/podcasts/views.py

@@ -1,6 +1,9 @@
+import datetime
+from django.utils import timezone
 from django.views import generic
 from podcasts.models import Podcast
 
+from scrobbles.models import Scrobble
 from scrobbles.views import ScrobbleableListView, ScrobbleableDetailView
 
 
@@ -8,6 +11,60 @@ class PodcastListView(generic.ListView):
     model = Podcast
     paginate_by = 20
 
+    def get_context_data(self, **kwargs):
+        context_data = super().get_context_data(**kwargs)
+        user = self.request.user
+        now = timezone.now()
+        start_day_of_week = now - datetime.timedelta(days=now.weekday())
+        start_day_of_month = now.replace(day=1)
+
+        scrobbles_this_week = Scrobble.objects.filter(
+            user=user,
+            podcast_episode__isnull=False,
+            timestamp__gte=start_day_of_week,
+        ).select_related("podcast_episode", "podcast_episode__podcast")
+
+        scrobbles_this_month = Scrobble.objects.filter(
+            user=user,
+            podcast_episode__isnull=False,
+            timestamp__gte=start_day_of_month,
+        ).select_related("podcast_episode", "podcast_episode__podcast")
+
+        podcasts_this_week = {}
+        for scrobble in scrobbles_this_week:
+            podcast = scrobble.podcast_episode.podcast
+            if podcast:
+                podcasts_this_week[podcast.id] = {
+                    "podcast": podcast,
+                    "count": podcasts_this_week.get(podcast.id, {}).get(
+                        "count", 0
+                    )
+                    + 1,
+                }
+
+        podcasts_this_month = {}
+        for scrobble in scrobbles_this_month:
+            podcast = scrobble.podcast_episode.podcast
+            if podcast:
+                podcasts_this_month[podcast.id] = {
+                    "podcast": podcast,
+                    "count": podcasts_this_month.get(podcast.id, {}).get(
+                        "count", 0
+                    )
+                    + 1,
+                }
+
+        context_data["podcasts_this_week"] = sorted(
+            podcasts_this_week.values(), key=lambda x: x["count"], reverse=True
+        )
+        context_data["podcasts_this_month"] = sorted(
+            podcasts_this_month.values(),
+            key=lambda x: x["count"],
+            reverse=True,
+        )
+
+        return context_data
+
 
 class PodcastDetailView(generic.DetailView):
     model = Podcast