onebeyond/generator-systemic

/* eslint-disable no-param-reassign */
const Generator = require('yeoman-generator');
const chalk = require('chalk');
const yosay = require('yosay');
const fs = require('fs');
const path = require('path');

module.exports = class extends Generator {
  prompting() {
    this.log(
      yosay(`Welcome to the unreal ${chalk.red('systemic')} generator!`),
    );

    const prompts = [{
      type: 'input',
      name: 'name',
      message: 'Your service name',
      default: this.appname.replace(/\s+/g, '-'),
    },
    {
      type: 'input',
      name: 'description',
      message: 'A brief description',
      default: '',
    },
    {
      type: 'input',
      name: 'author',
      message: 'The service author',
      default: 'author',
    },
    {
      type: 'input',
      name: 'email',
      message: 'The service author contact email',
      default: 'author@domain.com',
    }];

    return this.prompt(prompts).then(props => {
      this.props = props;
      this.props.showcase = !!this.options.showcase;

      this.props.filesToSkip = [
        // test
        'test/unit/sample.test.js',
        'test/mocks/components/config.js',
        'test/mocks/components/logger.js',
        'test/mocks/components/metrics.js',
      ];

      if (!this.props.showcase) {
        this.props.filesToSkip = [
          ...this.props.filesToSkip,
          // root
          'root/_docker-compose.yml',
          // test
          'test/helpers/sleep.js',
          'test/helpers/store.js',
          // components
          'lib/components/routes/v1/api-routes.js',
          'lib/components/routes/v2/api-routes.js',
          'lib/components/bus/index.js',
          'lib/components/bus/initBus.js',
          'lib/components/store/index.js',
          'lib/components/store/initStore.js',
          'lib/components/controller/index.js',
          'lib/components/controller/bus/initController.js',
          'lib/components/controller/api/v1/initController.js',
          'lib/components/controller/api/v2/initController.js',
        ];
      }
    });
  }

  writing() {
    const getFiles = (dirPath, filesPaths = []) => {
      const files = fs.readdirSync(dirPath);

      files.forEach(file => {
        if (fs.statSync(`${dirPath}/${file}`).isDirectory()) {
          filesPaths = getFiles(`${dirPath}/${file}`, filesPaths);
        } else {
          filesPaths.push(path.join(dirPath, file));
        }
      });

      return filesPaths;
    };

    const copyFiles = (from, to) => {
      const templatesFolder = path.join(__dirname, 'templates', from);
      const files = getFiles(templatesFolder).map(file => file.split(`${from}/`)[1]);

      files.forEach(file => {
        if (this.props.filesToSkip.includes(`${from}/${file}`)) return;
        this.fs.copyTpl(this.templatePath(`./${from}/${file}`), this.destinationPath(`${to}/${file.replace(/^_/, '')}`), this.props);
      });
    };

    copyFiles('root', '.');
    copyFiles('config', 'config');
    copyFiles('test', 'test');
    copyFiles('.husky', '.husky');
    copyFiles('lib/components', 'components');
  }

  install() {
    this.installDependencies({ npm: true, bower: false });
  }

  end() {
    const outputMsg = `\n\nYour service ${this.props.name} has been created.\nnpm run start - start your systemic service`;
    this.log(yosay(outputMsg));
  }
};