Add signal to delete YouTube playlist on MusikGame deletion

game/models.py

@@ -1,6 +1,10 @@
+import google.oauth2.credentials
+import googleapiclient.discovery
 from django.contrib.auth.models import User
 from django.db import models
 from django.db.models.functions import Lower
+from django.db.models.signals import post_delete
+from django.dispatch import receiver
 from django.urls import reverse
 
 
@@ -53,6 +57,20 @@ class MusikGame(models.Model):
         return reverse("game_detail", kwargs={"pk": self.pk})
 
 
+@receiver(post_delete, sender=MusikGame)
+def deleteYoutubePlaylist(sender, instance, using, **kwargs):
+    if not instance.playlist:
+        return
+
+    game = instance
+    credentials = google.oauth2.credentials.Credentials(
+        **game.group.owner.youtubecredentials.credentials
+    )
+    yt_api = googleapiclient.discovery.build("youtube", "v3", credentials=credentials)
+    pl_request = yt_api.playlists().delete(id=game.playlist)
+    pl_request.execute()
+
+
 class MusicGameOrder(models.Model):
     game = models.ForeignKey(MusikGame, on_delete=models.CASCADE)
     player = models.ForeignKey(User, on_delete=models.CASCADE)