Add ability to cancel and finish manual scrobbles

vrobbler/apps/scrobbles/migrations/0009_scrobble_uuid.py

@@ -0,0 +1,35 @@
+# Generated by Django 4.1.5 on 2023-01-20 18:40
+
+from uuid import uuid4
+from django.db import migrations, models
+
+
+def generate_uuids(apps, schema_editor):
+    """Force uuid generation for old scrobbles"""
+    Scrobble = apps.get_model('scrobbles', 'Scrobble')
+    for scrobble in Scrobble.objects.all():
+        if not scrobble.uuid:
+            scrobble.uuid = uuid4()
+            scrobble.save(update_fields=['uuid'])
+
+
+def reverse_generate_uuids(apps, schema_editor):
+    pass
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('scrobbles', '0008_scrobble_sport_event'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='scrobble',
+            name='uuid',
+            field=models.UUIDField(blank=True, editable=False, null=True),
+        ),
+        migrations.RunPython(
+            code=generate_uuids, reverse_code=reverse_generate_uuids
+        ),
+    ]