'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    // CockroachDB: add enum values in place, then rename the column.
    // Type is named 'notification_broadcast_audience' (matches the explicit CREATE TYPE
    // used when this table was first created — not Sequelize's default enum_<table>_<col> name).
    await queryInterface.sequelize.query(`ALTER TYPE public.notification_broadcast_audience ADD VALUE IF NOT EXISTS 'task_list'`);
    await queryInterface.sequelize.query(`ALTER TYPE public.notification_broadcast_audience ADD VALUE IF NOT EXISTS 'course'`);
    await queryInterface.sequelize.query(`ALTER TYPE public.notification_broadcast_audience ADD VALUE IF NOT EXISTS 'tier_plan'`);

    await queryInterface.renameColumn('notification_broadcasts', 'audience', 'target_type');

    await queryInterface.addColumn('notification_broadcasts', 'target_id', {
      type: Sequelize.STRING(64),
      allowNull: true,
    });

    await queryInterface.removeIndex('notification_broadcasts', ['audience']).catch(() => {});
    await queryInterface.addIndex('notification_broadcasts', ['target_type']);
  },

  async down(queryInterface) {
    await queryInterface.removeColumn('notification_broadcasts', 'target_id');
    await queryInterface.renameColumn('notification_broadcasts', 'target_type', 'audience');
  },
};