notes-node/notes.js

const fs = require('fs');
const Table = require('cli-table3');
const chalk = require('chalk');
const justify = require('justified');

const fileName = 'notes-data.json';

const printNote = (note) => {
  const title = chalk.inverse.bold.red;
  const body = chalk.bold.inverse.white;
  console.log(title(justify(note.title)));
  console.log(body(justify(note.body)));
};

const printNoteList = (notelist) => {
  var table = new Table({
    head: ['Title', 'Body'],
    colWidths: [25, 100]
  });
  notelist.forEach((note) => table.push([note.title, note.body]))
  console.log(table.toString());
};

const fetchNotes = () => {
  var notesString;
  try {
    notesString = fs.readFileSync(fileName);
    return JSON.parse(notesString);
  } catch (error) {
    return [];
  }
};

const saveNotes = (notes) => {
  fs.writeFileSync(fileName, JSON.stringify(notes));
};

const addNote = (title, body) => {
  var notes = fetchNotes(),
    note = { title, body };
  
  var duplicateNotes = notes.filter(note => note.title === title);

  if (duplicateNotes.length === 0) {
    notes.push(note);
    saveNotes(notes);

    return note;
  }
};

const removeNote = (title) => {
  var notes = fetchNotes();
  var filteredNotes = notes.filter(note => note.title !== title);
  saveNotes(filteredNotes);

  return notes.length !== filteredNotes.length;
}

const getNote = (title) => {
  let notes = fetchNotes();
  var note = notes.find(n => n.title === title);

  return note;
};

const getAll = () => {
  return fetchNotes();
};

module.exports = {
  addNote,
  getNote,
  getAll,
  removeNote,
  printNote,
  printNoteList
};