'use strict';

// `tier` started as ENUM('free','premium','exclusive') but 20260101000065
// dropped its CHECK constraint entirely — free-form STRING now, matching
// any tier_categories.slug value.
module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('user_tiers', {
      tier_id:    { type: Sequelize.BIGINT, primaryKey: true, autoIncrement: true },
      user_id:    { type: Sequelize.BIGINT, allowNull: false, references: { model: 'users', key: 'user_id' }, onDelete: 'CASCADE' },
      tier:       { type: Sequelize.STRING(20), allowNull: false, defaultValue: 'free' },
      status:     { type: Sequelize.ENUM('active', 'expired', 'revoked'), allowNull: false, defaultValue: 'active' },
      starts_at:  { type: Sequelize.DATE, allowNull: false, defaultValue: Sequelize.NOW },
      expires_at: { type: Sequelize.DATE, allowNull: true },
      granted_by: { type: Sequelize.BIGINT, allowNull: true },
      revoked_by: { type: Sequelize.BIGINT, allowNull: true },
      revoked_at: { type: Sequelize.DATE, allowNull: true },
      notes:      { type: Sequelize.TEXT, allowNull: true },
      plan_id:    { type: Sequelize.BIGINT, allowNull: true, references: { model: 'tier_plans', key: 'plan_id' }, onUpdate: 'CASCADE', onDelete: 'SET NULL' },
      createdAt:  { type: Sequelize.DATE, allowNull: false },
      updatedAt:  { type: Sequelize.DATE, allowNull: false },
    });

    await queryInterface.addIndex('user_tiers', ['user_id']);
    await queryInterface.addIndex('user_tiers', ['status']);
  },

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