Adds a database field for is_deleted on user

bookwyrm/migrations/0184_auto_20231106_0421.py

@@ -0,0 +1,49 @@
+# Generated by Django 3.2.20 on 2023-11-06 04:21
+
+from django.db import migrations
+from bookwyrm.models import User
+
+
+def update_deleted_users(apps, schema_editor):
+    """Find all the users who are deleted, not just inactive, and set deleted"""
+    users = apps.get_model("bookwyrm", "User")
+    db_alias = schema_editor.connection.alias
+    users.objects.using(db_alias).filter(
+        is_active=False,
+        deactivation_reason__in=[
+            "self_deletion",
+            "moderator_deletion",
+        ],
+    ).update(is_deleted=True)
+
+    # differente rules for remote users
+    users.objects.using(db_alias).filter(is_active=False, local=False,).exclude(
+        deactivation_reason="moderator_deactivation",
+    ).update(is_deleted=True)
+
+
+def erase_deleted_user_data(apps, schema_editor):
+    """Retroactively clear user data"""
+    for user in User.objects.filter(is_deleted=True):
+        user.erase_user_data()
+        user.save(
+            broadcast=False,
+            update_fields=["email", "avatar", "preview_image", "summary", "name"],
+        )
+        user.erase_user_statuses(broadcast=False)
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("bookwyrm", "0183_auto_20231105_1607"),
+    ]
+
+    operations = [
+        migrations.RunPython(
+            update_deleted_users, reverse_code=migrations.RunPython.noop
+        ),
+        migrations.RunPython(
+            erase_deleted_user_data, reverse_code=migrations.RunPython.noop
+        ),
+    ]