All files / create-gas-project/lib/classes Config.js

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const yaml = require( 'js-yaml' );
const fs = require( 'fs' );
const path = require( 'path' );
 
const ConfigFile = require( './Config-file' );
const ESLintrc = require( './ESLintrc' );
 
/**
 *
 * @param {string} type
 */
function validateTypeName( type ) {
  const validTypes = [
    'appsscript',
    'clasp',
    'eslintrc',
    'package'
  ];
  if ( !validTypes.includes( type ) ) throw Error( `Type name ${type} is not one of accepted type names: ${validTypes.reduce( ( prev, cur ) => prev + '\n' + cur )}` );
}
 
/**
 *
 * @param {string} ext
 */
function validateExtension( ext ) {
  const validExtensions = [
    '',
    '.js',
    '.json',
    '.yml',
    '.yaml'
  ];
  if ( !validExtensions.includes( ext ) ) throw Error( `File extension ${ext} is not one of accepted values: ${validExtensions.reduce( ( prev, cur ) => prev + '\n' + cur )}` );
}
 
/**
   * @param {string} input input
   * @returns {string} Sanitized value
   * @example
    let str = '.eslintrc.json';
    sanitizeTypeName(str) // => 'eslintrc's
   */
function formatTypeName( input ) {
  if ( !( typeof input === 'string' ) ) throw Error( 'Input must be string' );
 
  let output = input.toLowerCase();
  const ext = path.extname( input );
  if ( ext ) {
    output = output.slice( 0, input.length - ext.length );
  }
  if ( input[ 0 ] === '.' ) output = output.slice( 1 );
 
  validateTypeName( output );
  validateExtension( ext );
 
  return output;
}
 
/**
 * @export
 * @description
 * @class Config
 */
class Config extends ConfigFile { // eslint-disable-line no-unused-vars
 
  /**
   * Creates an instance of Config.
   * @param {string} type
   * @memberof Config
   */
  constructor( type ) {
    super();
    this.formatTypeName = formatTypeName;
    this.type = this.formatTypeName( type );
  }
 
  /**
   *
   * @param {Object} [object] A base configuration object to start from.
   * @returns
   * @memberof Config
   */
  create( object ) {
    let base;
    if ( object ) base = object;
    else if ( this.importedObject ) base = this.importedObject;
    else base = null;
 
    return {
      // 'appsscript': obj => new AppsScript(obj),
      // 'clasp'    : obj => new Clasp( obj ),
      'eslintrc': obj => new ESLintrc( obj )
      // 'package'  : obj => new Package( obj )
 
    }[ this.type ]( base );
  }
 
 
  /**
   * Imports the config file from filepath and converts it to an object
   * @param {string} filepath The absolute path
   */
  importFile( filepath ) {
    const fpath = checkExists( filepath );
    if ( !fpath ) throw Error( 'File not found.' );
 
    let extension = path.ext( fpath );
    if ( extension === '' ) extension = '.json';
    if ( extension === '.yml' ) extension = '.yaml';
    validateExtension( extension );
 
    const loaders = {
      // eslint-disable-next-line global-require
      '.js'   : p => require( p ),
      '.json' : p => JSON.parse( fs.readFileSync( p, 'utf8' ) ),
      '.yaml' : p => yaml.safeLoad( fs.readFileSync( p, 'utf8' ) )
    };
 
    const load = loaders[ extension ];
    const object = load( fpath );
 
    this.importedObject = object;
  }
}
 
/**
 * Verifies a path
 * @param {string} string
 * @returns
 */
function normalizePath( string ) {
  Iif ( !path.isAbsolute( string ) ) {
    return path.resolve( process.cwd(), string );
  }
 
  return string;
}
 
/**
 * @param {string} filepath
 * @returns {boolean}
 */
function checkExists( filepath ) {
  const fpath = normalizePath( filepath );
  if ( fs.existsSync( fpath ) ) return fpath;
  return null;
}
 
// ANCHOR module.exports
module.exports = Config;