// Copyright IBM Corp. and LoopBack contributors 2019. All Rights Reserved.
// Node module: @loopback/example-express-composition
// This file is licensed under the MIT License.
// License text available at https://opensource.org/licenses/MIT

import {ExpressServer} from './server';

export async function migrate(args: string[]) {
  const existingSchema = args.includes('--rebuild') ? 'drop' : 'alter';
  console.log('Migrating schemas (%s existing schema)', existingSchema);

  const server = new ExpressServer();
  await server.boot();
  await server.lbApp.migrateSchema({existingSchema});

  // Connectors usually keep a pool of opened connections,
  // this keeps the process running even after all work is done.
  // We need to exit explicitly.
  process.exit(0);
}

migrate(process.argv).catch(err => {
  console.error('Cannot migrate database schema', err);
  process.exit(1);
});