notes.js

const fs=require('fs');

var fetchNotes=()=>{
	try{
	var notesString=fs.readFileSync('notes-data.json');
	return JSON.parse(notesString);
	}catch(e){
		return [];
	}
};

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

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

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

var getAll=()=>{
	console.log('getting all notes');
};

var getNote=(title)=>{
	var notes=fetchNotes();
	var filteredNotes=notes.filter((note)=>note.title===title);
	return filteredNotes[0];
	
};


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

var logNote=(note)=>{
		console.log('-----');
		console.log(`title ${note.title}`);
		console.log(`body ${note.body}`);
};

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