'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('achievements', {
      achievement_id: { type: Sequelize.BIGINT, primaryKey: true, autoIncrement: true },
      user_id:        { type: Sequelize.BIGINT, allowNull: false, references: { model: 'users', key: 'user_id' }, onDelete: 'CASCADE' },
      type:           { type: Sequelize.ENUM('badge', 'milestone'), allowNull: false, defaultValue: 'badge' },
      key:            { type: Sequelize.STRING(100), allowNull: false },
      label:          { type: Sequelize.STRING(255), allowNull: false },
      description:    { type: Sequelize.TEXT, allowNull: true },
      icon:           { type: Sequelize.STRING(50), allowNull: true },
      granted_by:     { type: Sequelize.BIGINT, allowNull: true },
      granted_at:     { type: Sequelize.DATE, allowNull: false, defaultValue: Sequelize.NOW },
      metadata:       { type: Sequelize.JSONB, allowNull: true, defaultValue: {} },
      createdAt:      { type: Sequelize.DATE, allowNull: false },
      updatedAt:      { type: Sequelize.DATE, allowNull: false },
    });

    await queryInterface.addIndex('achievements', ['user_id']);
    await queryInterface.addIndex('achievements', { fields: ['user_id', 'key'], unique: true, name: 'uq_achievement_user_key' });
  },

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