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notes.js
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notes.js
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const fs = require('fs');//import
var fetchNotes = () => {
try{ //use try and catch to get error and deal according to it.
var notesString = fs.readFileSync('notes-data.json');//to read the value from JSON file.
return JSON.parse(notesString);
}catch(e){
return [];
}
};
var saveNotes = (notes) => {
fs.writeFileSync('notes-data.json', JSON.stringify(notes));
/*to add new file if the file is not present
and pass the data along with in string format*/
};
//made a function and added an empty array
var addNote = (title, body) => {
var notes = fetchNotes();
var note = {//passes the values for a single note.
title,
body
};
//to match the title of single note in notes array for less redundancy.
var duplicateNotes = notes.filter((note) => note.title === title);
if(duplicateNotes.length === 0){
notes.push(note);
saveNotes(notes);
return note;
}
};
var getAll = () => {
return fetchNotes();
};
var getNote = (title) => {
var notes = fetchNotes();
var readFilteredNotes = notes.filter((note) => note.title === title);
return readFilteredNotes[0];
}
var removeNote = (title) => {
var notes = fetchNotes();
var filteredNotes = notes.filter((note) => note.title !== title);
saveNotes(filteredNotes);
};
var logNote = (note) => {
debugger;
console.log('----');
console.log(`Title: ${note.title}`);
console.log(`Body: ${note.body}`);
};
module.exports = {
addNote,
getAll,
getNote,
removeNote,
logNote
};