Introduce game status, playevents

games/signals.py

@@ -1,8 +1,8 @@
-from django.db.models.signals import m2m_changed
+from django.db.models.signals import m2m_changed, pre_save
 from django.dispatch import receiver
 from django.utils.timezone import now
 
-from games.models import Purchase
+from games.models import Game, GameStatusChange, Purchase
 
 
 @receiver(m2m_changed, sender=Purchase.games.through)
@@ -10,3 +10,31 @@ def update_num_purchases(sender, instance, **kwargs):
     instance.num_purchases = instance.games.count()
     instance.updated_at = now()
     instance.save(update_fields=["num_purchases"])
+
+
+@receiver(pre_save, sender=Game)
+def game_status_changed(sender, instance, **kwargs):
+    """
+    Signal handler to create a GameStatusChange record whenever a Game's status is updated.
+    """
+    try:
+        old_instance = sender.objects.get(pk=instance.pk)
+        old_status = old_instance.status
+        print("Got old instance")
+    except sender.DoesNotExist:
+        # Handle the case where the instance was deleted before the signal was sent
+        print("Instance does not exist")
+        return
+
+    if old_status != instance.status:
+        print("Status changed")
+        GameStatusChange.objects.create(
+            game=instance,
+            old_status=old_status,
+            new_status=instance.status,
+            timestamp=instance.updated_at,
+        )
+    else:
+        print("Status not changed")
+        print(f"{old_instance.status}")
+        print(f"{instance.status}")