#!/usr/bin/env node

/**
 * Copyright (c) 2017-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

require('babel-register')({
  babelrc: false,
  only: [__dirname, process.cwd() + '/core'],
  plugins: [
    require('./server/translate-plugin.js'),
    'transform-class-properties',
    'transform-object-rest-spread',
  ],
  presets: ['react', 'env'],
});

// For verifying port usage
const tcpPortUsed = require('tcp-port-used');

// initial check that required files are present
const chalk = require('chalk');
const fs = require('fs');
const CWD = process.cwd();

if (!fs.existsSync(CWD + '/siteConfig.js')) {
  console.error(
    chalk.red('Error: No siteConfig.js file found in website folder!')
  );
  process.exit(1);
}

const program = require('commander');

program.option('--port <number>', 'Specify port number').parse(process.argv);

const port = parseInt(program.port, 10) || 3000;

tcpPortUsed
  .check(port, 'localhost')
  .then(function(inUse) {
    if (inUse) {
      console.error(chalk.red('Port ' + port + ' is in use'));
      process.exit(1);
    } else {
      console.log('Starting Docusaurus server on port ' + port + '...');
      // start local server on specified port
      const server = require('./server/server.js');
      server(port);
    }
  })
  .catch(function(ex) {
    setTimeout(function() {
      throw ex;
    }, 0);
  });
