notes-node/app.js

const fs = require('fs');
const boxen = require('boxen');
const chalk = require('chalk');
const _ = require('lodash');
const yargs = require('yargs');

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

const titleOptions = {
  describe: 'Title of note.',
  demand: true,
  alias: 't'
};

const bodyOptions = {
  describe: 'Body of the note.',
  demand: true,
  alias: 'b'
};

const argv = yargs
  .command('add', 'Add a new note.', {
    title: titleOptions,
    body: bodyOptions
  })
  .command('list', 'List all notes.')
  .command('read', 'Read a note.', { title: titleOptions })
  .command('remove', 'Remove a note.', { title: titleOptions })
  .locale('en')
  .help()
  .argv;

let command = argv._[0];

const msgInfo = {
  borderColor: 'green',
  borderStyle: 'round',
  float: 'left',
  align: 'center'
};

const msgInfoText = chalk.bold.green;
const msgDangerText = chalk.bold.red;

const msgDanger = {
  borderColor: 'red',
  borderStyle: 'round',
  float: 'left',
  align: 'center'
};

if (command === 'add') {

  let note = notes.addNote(argv.title, argv.body);
  if (note) {
    console.log(boxen(msgInfoText('Note created'), msgInfo));
    notes.printNote(note);
  } else {
    console.log(boxen(msgDangerText('Note already exist.'), msgDanger));
  }
} else if (command === 'remove') {

  let removed = notes.removeNote(argv.title);
  let message = removed ? `Note: '${argv.title}' removed.` : `Note: '${argv.title}' not found.`;
  console.log(boxen(msgDangerText(message), msgDanger));

} else if (command === 'list') {

  let noteList = notes.getAll();
  let message =`Printing ${noteList.length} notes:`;
  console.log(boxen(msgInfoText(message), msgInfo));

  notes.printNoteList(noteList);

} else if (command === 'read') {

  let note = notes.getNote(argv.title);
  if (note !== undefined) {
    notes.printNote(note);
  } else {
    console.log(boxen(msgDangerText(`Note '${argv.title}' not found`), msgDanger));
  }

} else {
  console.log(boxen(msgDangerText('Command not recognized'), msgDanger));
}