'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('user_activity', {
      activity_id: { type: Sequelize.BIGINT, primaryKey: true, autoIncrement: true },
      user_id:     { type: Sequelize.BIGINT, allowNull: false, references: { model: 'users', key: 'user_id' }, onDelete: 'CASCADE' },
      session_id:  { type: Sequelize.BIGINT, allowNull: true },
      action:      { type: Sequelize.STRING(100), allowNull: false },
      entity_type: { type: Sequelize.STRING(50), allowNull: true },
      entity_id:   { type: Sequelize.BIGINT, allowNull: true },
      details:     { type: Sequelize.JSONB, allowNull: true },
      created_at:  { type: Sequelize.DATE, allowNull: false, defaultValue: Sequelize.literal('CURRENT_TIMESTAMP') },
    });

    await queryInterface.addIndex('user_activity', { fields: ['user_id'],   name: 'idx_ua_user_id'    });
    await queryInterface.addIndex('user_activity', { fields: ['action'],    name: 'idx_ua_action'     });
    await queryInterface.addIndex('user_activity', { fields: ['created_at'], name: 'idx_ua_created_at' });
  },

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