'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('products', {
      id:          { type: Sequelize.BIGINT, primaryKey: true, autoIncrement: true },
      course_id:   { type: Sequelize.BIGINT, allowNull: false, references: { model: 'courses', key: 'course_id' }, onDelete: 'CASCADE' },
      name:        { type: Sequelize.STRING(200), allowNull: false },
      description: { type: Sequelize.TEXT, allowNull: true },
      price:       { type: Sequelize.DECIMAL(10, 2), allowNull: false },
      currency:    { type: Sequelize.STRING(10), allowNull: false, defaultValue: 'USD' },
      access_days: { type: Sequelize.INTEGER, allowNull: true },   // null = lifetime access
      is_active:   { type: Sequelize.BOOLEAN, allowNull: false, defaultValue: true },
      createdAt:   { type: Sequelize.DATE, allowNull: false },
      updatedAt:   { type: Sequelize.DATE, allowNull: false },
      deletedAt:   { type: Sequelize.DATE, allowNull: true },
    });

    await queryInterface.addIndex('products', ['course_id']);
  },

  async down(queryInterface) {
    await queryInterface.dropTable('products');
  },
};