Add migration

Author: CarsonF

src/components/admin/admin.module.ts

@@ -5,6 +5,7 @@ import { AdminEdgeDBRepository } from './admin.edgedb.repository';
 import { AdminEdgeDBService } from './admin.edgedb.service';
 import { AdminRepository } from './admin.repository';
 import { AdminService } from './admin.service';
+import { NormalizeCreatorMigration } from './migrations/normalize-creator.migration';
 
 @Module({
   imports: [AuthorizationModule],
@@ -16,6 +17,7 @@ import { AdminService } from './admin.service';
       // and each will only use their own.
       AdminEdgeDBRepository,
     ),
+    NormalizeCreatorMigration,
   ],
 })
 export class AdminModule {}

src/components/admin/migrations/normalize-creator.migration.ts

@@ -0,0 +1,24 @@
+import { BaseMigration, Migration } from '~/core/database';
+
+@Migration('2024-04-16T19:00:00')
+export class NormalizeCreatorMigration extends BaseMigration {
+  async up() {
+    // Handle RootUser first specially.
+    // Since denormalized creator IDs for RootUser currently reference a non-existent user ID
+    await this.db.query().raw`
+      match (user:RootUser)
+      match (bn)-[r:creator { active: true }]->(oldCreatorProp:Property)
+      where not exists { (:User { id: oldCreatorProp.value }) }
+      create (bn)-[:creator { active: true, createdAt: r.createdAt }]->(user)
+      detach delete oldCreatorProp
+    `.executeAndLogStats();
+
+    await this.db.query().raw`
+      match (bn)-[r:creator { active: true }]->(oldCreatorProp:Property)
+      with bn, r, oldCreatorProp
+      match (user:User { id: oldCreatorProp.value })
+      create (bn)-[:creator { active: true, createdAt: r.createdAt }]->(user)
+      detach delete oldCreatorProp
+    `.executeAndLogStats();
+  }
+}