notes.js

const fs = require('fs')
const chalk = require('chalk')
const addNotes = function(title,body){
    const notes = getNotes()
    const duplicateNotes = notes.filter( (note) => title===note.title )
    if(duplicateNotes.length===0){
        notes.push({
            title : title,
            body : body
        })
        fs.writeFileSync('notes.json',JSON.stringify(notes))
        console.log(chalk.inverse.green("Note was Added"))
    }
    else{
        console.log(chalk.inverse.red('Title already taken'))
    }
   
}
const getNotes = function(){
    try{
        const notesBuffer = fs.readFileSync('notes.json')
        const notesString = notesBuffer.toString()
        return JSON.parse(notesString) 
    }
    catch(error){
        return []
    }
    
}
const removeNotes = function(title){
    const notes = getNotes()
    if(notes.length === 0){
        console.log(chalk.inverse.red("No notes present"))
    }else{
            const duplicateNotes = notes.filter((note) => title!==note.title)
            if(duplicateNotes.length===notes.length){
                console.log(chalk.inverse.red("Note with given title not present"))
            }
            else{
                fs.writeFileSync('notes.json',JSON.stringify(duplicateNotes))
                console.log(chalk.inverse.green("Note with title: "+ title+" was deletedgit "))
            }
    }
   
}

const listNotes = function(){
    const notes = getNotes()
    if(notes.length === 0){
        console.log(chalk.inverse.red("No notes present"))
    }else{
        notes.forEach(note => {
            console.log(chalk.inverse.blue("Note title: "+ note.title))
            console.log(chalk.inverse.blue("Note : "+ note.body))
        });
    }   
}
const readNotes = function(title){
    const notes = getNotes()
    if(notes.length === 0){
        console.log(chalk.inverse.red("No notes present"))
    }else{
            const duplicateNotes = notes.filter((note) => title===note.title)
            if(duplicateNotes.length===1){
                console.log(chalk.inverse.blue(duplicateNotes[0].title))
                console.log(chalk.inverse.blue(duplicateNotes[0].body))
            }
            else{
                console.log(chalk.inverse.red("No note was present with given title"))
            }
    }
   
}
module.exports = {
    getNotes : getNotes,
    addNotes : addNotes,
    removeNotes : removeNotes,
    listNotes : listNotes,
    readNotes : readNotes
}