import { MigrationInterface, QueryRunner } from 'typeorm';

export class AddParentIdToKnowledgeGroups1772340000000 implements MigrationInterface {
  name = 'AddParentIdToKnowledgeGroups1772340000000';

  public async up(queryRunner: QueryRunner): Promise<void> {
    // Add parent_id column to knowledge_groups table
    await queryRunner.query(
      `ALTER TABLE "knowledge_groups" ADD COLUMN "parent_id" text REFERENCES "knowledge_groups"("id") ON DELETE SET NULL`,
    );
  }

  public async down(queryRunner: QueryRunner): Promise<void> {
    await queryRunner.query(
      `ALTER TABLE "knowledge_groups" DROP COLUMN "parent_id"`,
    );
  }
}