'use strict';

// Courses gain a publish-state lifecycle (draft/published/unpublished),
// separate from the existing soft-delete Archive feature. `status` is added
// as STRING + an explicit CHECK constraint (addColumn doesn't auto-generate
// one on this CockroachDB instance, unlike createTable), matching the
// pattern used in 20260709000002-add-review-fields-to-task-completions.js.
// Existing non-deleted courses are backfilled to 'published' since they're
// already live/consumed by learners; new courses default to 'draft'.

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.addColumn('courses', 'status', {
      type: Sequelize.STRING,
      allowNull: false,
      defaultValue: 'draft',
      after: 'subscription',
    });
    await queryInterface.sequelize.query(
      `ALTER TABLE courses ADD CONSTRAINT check_status
       CHECK (status IN ('draft', 'published', 'unpublished'))`
    );
    await queryInterface.sequelize.query(
      `UPDATE courses SET status = 'published' WHERE "deletedAt" IS NULL`
    );
  },

  async down(queryInterface) {
    await queryInterface.sequelize.query(
      `ALTER TABLE courses DROP CONSTRAINT IF EXISTS check_status`
    );
    await queryInterface.removeColumn('courses', 'status');
  },
};