notes.js

const fs = require("fs");

function logNotes(note) {
  console.log("---");
  console.log(`Title: ${note.title}`);
  console.log(`Body: ${note.body}`);
}

const fetchNotes = () => {
  try {
    let noteString = fs.readFileSync("notes-data.json");
    return JSON.parse(noteString);
  } catch (error) {
    return [];
  }
};

const saveNotes = notes => {
  fs.writeFileSync("notes-data.json", JSON.stringify(notes));
};

const addNote = (title, body) => {
  let notes = fetchNotes();
  const note = {
    title: title,
    body: body
  };

  let duplicateNotes = notes.filter(note => note.title === title);

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

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

const removeNote = title => {
  //fetch notes
  const notes = fetchNotes();
  //filter notes, remove based on title
  const filteredNotes = notes.filter(note => note.title !== title);
  //save new notes array
  saveNotes(filteredNotes);
  return notes.length !== filteredNotes.length;
};

const readNote = title => {
  const notes = fetchNotes();
  const selectedNote = notes.filter(note => note.title === title);
  return selectedNote[0];
};

module.exports = {
  addNote,
  getAll,
  removeNote,
  readNote,
  logNotes
};