#!/usr/bin/env node

const This = require('./this');
const {Command} = require('commander');
const program = new Command();

const errorColor = (str) => {
  // Add ANSI escape codes to display text in red.
  return `\x1b[31m${str}\x1b[0m`;
};

class PmInstall extends This {
  constructor() {
    super();
    this.version = '0.0.1';
  }

  start() {
    // Usage
    const pmInstall = new PmInstall();
    // Output: Methods of ExampleClass: [ 'methodOne', 'methodTwo' ]
    //         Properties of ExampleClass: [ 'propertyOne', 'propertyTwo', 'version' ] and Version: 1.1.0
    pmInstall.discovery();

    program
      .name(this.scriptName)
      .version('0.0.1')
      .description('Install package with fake package manager')
      .usage('-n 3 32 -l x y z -- op')
      .configureOutput({
        // Visibly override write routines as example!
        //writeOut: (str) => process.stdout.write(`[OUT] ${str}`),
        writeErr: (str) => process.stdout.write(`[ERR] ${str}`),
        // Highlight errors in color.
        outputError: (str, write) => write(errorColor(str)),
      });

    program
      .option('-n, --number <numbers...>', 'specify numbers')
      .option('-l, --letter [letters...]', 'specify letters')
      .parse();

    // console.log('options array');
    // console.log(program.options.map(o => o.flags));

    // console.log('visible options');
    // const helper = program.createHelp();
    // console.log(helper.visibleOptions(program).map(o => o.flags));

    if (Object.keys(program.opts()).length || program.args.length) {
      console.log('Options: ', program.opts());
      console.log('Remaining arguments: ', program.args);
    } else {
      program.outputHelp();
    }
  }
}

// main
const pmInstall = new PmInstall();
pmInstall.start();