serverless/lib/utils/renameService.js

'use strict';

const path = require('path');
const fse = require('fs-extra');

const fileExistsSync = require('./fs/fileExistsSync');
const readFileSync = require('./fs/readFileSync');
const writeFileSync = require('./fs/writeFileSync');
const ServerlessError = require('../classes/Error').ServerlessError;

function renameService(name, servicePath) {
  const serviceFile = path.join(servicePath, 'serverless.yml');
  const packageFile = path.join(servicePath, 'package.json');

  if (!fileExistsSync(serviceFile)) {
    const errorMessage = ['serverless.yml not found in', ` ${servicePath}`].join('');
    throw new ServerlessError(errorMessage);
  }

  const serverlessYml = fse
    .readFileSync(serviceFile, 'utf-8')
    .replace(/service\s*:.+/gi, match => {
      const fractions = match.split('#');
      fractions[0] = `service: ${name}`;
      return fractions.join(' #');
    })
    .replace(/service\s*:\n {2}name:.+/gi, match => {
      const fractions = match.split('#');
      fractions[0] = `service:\n  name: ${name}`;
      return fractions.join(' #');
    });

  fse.writeFileSync(serviceFile, serverlessYml);

  if (fileExistsSync(packageFile)) {
    const json = readFileSync(packageFile);
    writeFileSync(packageFile, Object.assign(json, { name }));
  }

  return name;
}

module.exports.renameService = renameService;