campaign version refinment, user locks, db repair

server/alembic/versions/5f6a7b8c9d0e_campaign_version_user_locks.py

@@ -0,0 +1,55 @@
+"""explicit temporary and permanent user locks
+
+Revision ID: 5f6a7b8c9d0e
+Revises: 4e5f6a7b8c9d
+Create Date: 2026-06-13 18:00:00.000000
+"""
+from __future__ import annotations
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+revision: str = "5f6a7b8c9d0e"
+down_revision: Union[str, None] = "4e5f6a7b8c9d"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    with op.batch_alter_table("campaign_versions") as batch_op:
+        batch_op.add_column(sa.Column("user_lock_state", sa.String(length=20), nullable=True))
+        batch_op.add_column(sa.Column("user_locked_at", sa.DateTime(timezone=True), nullable=True))
+        batch_op.add_column(sa.Column("user_locked_by_user_id", sa.String(length=36), nullable=True))
+        batch_op.create_foreign_key(
+            "fk_campaign_versions_user_locked_by_user_id_users",
+            "users",
+            ["user_locked_by_user_id"],
+            ["id"],
+            ondelete="SET NULL",
+        )
+        batch_op.create_index("ix_campaign_versions_user_lock_state", ["user_lock_state"])
+        batch_op.create_index("ix_campaign_versions_user_locked_by_user_id", ["user_locked_by_user_id"])
+
+    # Existing published snapshots were the former irreversible user lock.
+    op.execute(
+        """
+        UPDATE campaign_versions
+        SET user_lock_state = 'permanent',
+            user_locked_at = published_at,
+            user_locked_by_user_id = NULL
+        WHERE published_at IS NOT NULL
+          AND user_lock_state IS NULL
+        """
+    )
+
+
+def downgrade() -> None:
+    with op.batch_alter_table("campaign_versions") as batch_op:
+        batch_op.drop_index("ix_campaign_versions_user_locked_by_user_id")
+        batch_op.drop_index("ix_campaign_versions_user_lock_state")
+        batch_op.drop_constraint("fk_campaign_versions_user_locked_by_user_id_users", type_="foreignkey")
+        batch_op.drop_column("user_locked_by_user_id")
+        batch_op.drop_column("user_locked_at")
+        batch_op.drop_column("user_lock_state")