feat: replace php migration with django migration

- keep latest legacy version in initial migration file
- move propel schema to api legacy app
- remove legacy upgrade tool

api/libretime_api/legacy/migrations/0005_2_5_4.py

@@ -0,0 +1,61 @@
+from django.db import migrations
+
+from ._migrations import legacy_migration_factory
+
+UP = None
+
+DOWN = None
+
+
+def promote_admin_to_superadmin(cursor):
+    # Ensure there are no superadmins already
+    super_admin_count = cursor.execute(
+        """
+        SELECT COUNT(id)
+        FROM cc_subjs
+        WHERE type = 'S'
+        AND login != 'sourcefabric_admin';
+        """
+    ).fetchone()
+    if super_admin_count != 0:
+        return
+
+    # Promote the "admin" user to superadmin
+    cursor.execute(
+        """
+        UPDATE cc_subjs SET type = 'S'
+        WHERE login = 'admin';
+        """
+    )
+    if cursor.rowcount == 0:
+        # Otherwise promote the administrator with the lowest ID
+        cursor.execute(
+            """
+            UPDATE cc_subjs SET type = 'S'
+            WHERE id = (
+                SELECT id
+                FROM cc_subjs
+                WHERE type = 'A'
+                ORDER BY id
+                LIMIT 1
+            );
+            """
+        )
+        if cursor.rowcount == 0:
+            raise RuntimeError("Failed to find any users of type 'admin' ('A')")
+
+    # Ignoring the sourcefabric_admin user
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("legacy", "0004_2_5_3"),
+    ]
+    operations = [
+        migrations.RunPython(
+            code=legacy_migration_factory(
+                target="2.5.4",
+                before=promote_admin_to_superadmin,
+            )
+        )
+    ]