'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('user_group_members', {
      group_id:  { type: Sequelize.BIGINT, primaryKey: true, references: { model: 'user_groups', key: 'group_id' }, onDelete: 'CASCADE' },
      user_id:   { type: Sequelize.BIGINT, primaryKey: true, references: { model: 'users',       key: 'user_id'  }, onDelete: 'CASCADE' },
      joined_at: { type: Sequelize.DATE, defaultValue: Sequelize.NOW },
      createdBy: { type: Sequelize.BIGINT, allowNull: true },
      updatedBy: { type: Sequelize.BIGINT, allowNull: true },
      deletedBy: { type: Sequelize.BIGINT, allowNull: true },
      createdAt: { type: Sequelize.DATE, allowNull: false },
      updatedAt: { type: Sequelize.DATE, allowNull: false },
      deletedAt: { type: Sequelize.DATE, allowNull: true },
    });

    await queryInterface.addIndex('user_group_members', ['user_id']);
    await queryInterface.addIndex('user_group_members', ['group_id']);
  },

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