andela-iamao / react-raise

const path = require('path');

const fs = require('fs');

const structureSchema = require('../sample/folder-schema');

const baseDir = require('./baseDir');

/**

 * Define and build the application folder structure

 * @class Structure

 */

class Structure {

  /**

   * Creates an instance of Structure.

   * @param {string} extend - path to add to current working drectory

   * @param {any} schema - folder structure schema

   * @memberOf Structure

   */

  /**

   * Move through the folder schema and create folders and files

   * @param {Array} dir - current directory to iterate through

   * @param {Array} pathname - contains each individual parent

   * folders name

   * @returns {Void} returns nothing

   * @memberOf Structure

   */

  traverse(dir, pathname) {

    if (!pathname) {

      pathname = [];

    }

    dir.forEach((root, index, parent) => {

      if (typeof root === 'object') {

        pathname.push(Object.keys(root)[0]);

        mkdirp.sync(

          path.join(this.filepath, `/example/${pathname.join('/')}`));

        this.traverse(root[Object.keys(root)[0]], pathname);

      } else {

        fs.writeFile(

          path.join(

            this.filepath,

            `/example/${pathname.join('/')}/${root}`),

          '');

        if (index === parent.length - 1) {

          pathname.pop();

        }

      }

    });

  }

  /**

   * Build the folder structure based off the provided schema

   * @returns {Promise} resolves promise when directories have been created

   * @memberOf Structure

   */

  build() {

    return new Promise((resolve) => {

      this.traverse(this.schema);

      if (baseDir.directoryExists(

        path.join(this.filepath, '/example/test/helper.js'))) {

        resolve(this.schema);

      }

    });

  }

}

module.exports = Structure;