Add migration to insert missing DeniedGuids from blocked add-ons (#19308)

* Add migration to insert missing DeniedGuids from blocked add-ons

* Use the ORM

* Can't use constant on fake model, and get values_list

src/olympia/addons/migrations/0039_auto_20220531_0953.py

@@ -0,0 +1,37 @@
+# Generated by Django 3.2.13 on 2022-05-31 09:53
+
+from django.db import migrations
+from django.db.models.functions import Collate
+
+from olympia import amo
+
+
+def fix_missing_denied_guids_for_blocked_addons(apps, schema_editor):
+    Addon = apps.get_model('addons', 'Addon')
+    Block = apps.get_model('blocklist', 'Block')
+    DeniedGuid = apps.get_model('addons', 'DeniedGuid')
+    missing_denied_guids = (
+        Addon.unfiltered.filter(
+            guid__in=Block.objects.filter(min_version='0', max_version='*').values(
+                guidc=Collate('guid', 'utf8mb4_unicode_ci')
+            ),
+            status=amo.STATUS_DELETED,
+        )
+        .exclude(guid__in=DeniedGuid.objects.values('guid'))
+        .values_list('guid', flat=True)
+        .distinct()
+    )
+    DeniedGuid.objects.bulk_create(
+        [DeniedGuid(guid=guid) for guid in missing_denied_guids]
+    )
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('addons', '0038_auto_20220530_1639'),
+    ]
+
+    operations = [
+        migrations.RunPython(fix_missing_denied_guids_for_blocked_addons),
+    ]