index.js

#!/usr/bin/env node

const fs = require('fs');
const colors = require('colors');
const { exec } = require('child_process');
const process = require('process');

const templates = require('./templates/templates.js');

const appName = process.argv[2];
const appDirectory = `${process.cwd()}/${appName}`;

colors.setTheme({
  silly: 'rainbow',
  input: 'grey',
  verbose: 'cyan',
  prompt: 'grey',
  info: 'green',
  data: 'grey',
  help: 'cyan',
  warn: 'yellow',
  debug: 'blue',
  error: 'red',
  custom: ['cyan', 'bold'],
});

const createReactApp = () =>
  new Promise((resolve) => {
    if (appName) {
      exec(`npx create-react-app ${appName}`, (error, stdout, stderr) => {
        if (error) {
          console.error(`exec error: ${error}`.error);
          resolve(false);
        }
        console.log(`stdout: ${stdout}`.data);
        console.log(`stderr: ${stderr}`.data);
        console.log(
          'Created react app, now installing supporting packages.'.custom
        );
        resolve(true);
      });
    } else {
      console.log('\nNo app name was provided.'.help);
      console.log('\nProvide an app name in the following format: '.help);
      console.log('\ncreate-iot-react-app ', 'app-name\n'.help);
      resolve(false);
    }
  });

const installPackages = () =>
  new Promise((resolve) => {
    console.log(
      '\nInstalling sass, d3, carbon-addons-iot-react@next, & classnames\n'.help
    );
    exec(
      `cd ${appName} && yarn --cwd ${appDirectory} add sass d3 carbon-addons-iot-react@next classnames`,
      (error, stdout, stderr) => {
        if (error) {
          console.error(`exec error: ${error}`);
          return;
        }
        console.log(`stdout: ${stdout}`);
        console.error(`stderr: ${stderr}`);
        console.log('\nFinished installing packages\n'.custom);
        resolve();
      }
    );
  });

const updateTemplates = () =>
  new Promise((resolve) => {
    const promises = [];
    Object.keys(templates).forEach((fileName, i) => {
      promises[i] = new Promise((res) => {
        fs.writeFile(
          `${appDirectory}/src/${fileName}`,
          templates[fileName],
          (err) => {
            if (err) {
              return console.log(err);
            }
            res();
          }
        );
      });
    });
    Promise.all(promises).then(() => {
      resolve();
    });
  });

const run = async () => {
  console.log(
    'Starting install of WIoT React app, this may take a minute.'.custom
  );
  const success = await createReactApp();
  if (!success) {
    console.log(
      'Something went wrong while trying to create a new React app using create-react-app'
        .error
    );
    process.exit(1);
  }
  // await cdAndStorybook();
  await installPackages();
  await updateTemplates();
  console.log(
    'All done. To get started `cd` into your project folder and type `yarn start`'
      .help
  );
  process.exit();
};

run();