'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    await queryInterface.createTable('task_link_visits', {
      visit_id:       { type: Sequelize.UUID, defaultValue: Sequelize.UUIDV4, primaryKey: true },
      task_id:        { type: Sequelize.UUID, allowNull: false, references: { model: 'tasks',            key: 'task_id'        }, onDelete: 'CASCADE' },
      requirement_id: { type: Sequelize.UUID, allowNull: false, references: { model: 'task_requirements', key: 'requirement_id' }, onDelete: 'CASCADE' },
      user_id:        { type: Sequelize.BIGINT, allowNull: false, references: { model: 'users',           key: 'user_id'        }, onDelete: 'CASCADE' },
      visited_at:     { type: Sequelize.DATE, defaultValue: Sequelize.NOW, allowNull: false },
      createdBy:      { type: Sequelize.BIGINT, allowNull: true },
      updatedBy:      { type: Sequelize.BIGINT, allowNull: true },
      createdAt:      { type: Sequelize.DATE, allowNull: false },
      updatedAt:      { type: Sequelize.DATE, allowNull: false },
    });

    await queryInterface.addIndex('task_link_visits', { fields: ['requirement_id', 'user_id'], unique: true, name: 'uq_tlv_requirement_user' });
    await queryInterface.addIndex('task_link_visits', { fields: ['task_id'],        name: 'idx_tlv_task_id'        });
    await queryInterface.addIndex('task_link_visits', { fields: ['user_id'],        name: 'idx_tlv_user_id'        });
    await queryInterface.addIndex('task_link_visits', { fields: ['requirement_id'], name: 'idx_tlv_requirement_id' });
  },

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