/**
 * Migration: Add is_approved field to devices table
 * This migration adds device approval functionality to the system
 */

'use strict';

module.exports = {
  async up(queryInterface, Sequelize) {
    // Add is_approved column to devices table
    await queryInterface.addColumn('devices', 'is_approved', {
      type: Sequelize.BOOLEAN,
      defaultValue: false,
      allowNull: false,
      comment: 'Whether the device is approved to send data'
    });

    // Add index for is_approved for better query performance
    await queryInterface.addIndex('devices', ['is_approved'], {
      name: 'devices_is_approved_idx'
    });

    // Approve all existing devices by default (backward compatibility)
    await queryInterface.sequelize.query(
      'UPDATE devices SET is_approved = true WHERE created_at < NOW()'
    );

    console.log('✅ Added is_approved field to devices table');
    console.log('✅ Approved all existing devices for backward compatibility');
  },

  async down(queryInterface, Sequelize) {
    // Remove index first
    await queryInterface.removeIndex('devices', 'devices_is_approved_idx');
    
    // Remove the column
    await queryInterface.removeColumn('devices', 'is_approved');
    
    console.log('✅ Removed is_approved field from devices table');
  }
};