script.js

const image = document.querySelector('img');
const title = document.getElementById('title');
const artist = document.getElementById('artist');
const music = document.querySelector("audio");
const currentTimeEl = document.getElementById('current-time');
const durationEl = document.getElementById('duration');
const progress = document.getElementById('progress');
const progressContainer = document.getElementById('progress-container');
const prevBtn = document.getElementById('prev');
const playBtn = document.getElementById('play');
const nextBtn = document.getElementById('next');

// Music
const songs = [ 
    {
        name: 'Need Nothing More',
        displayName: 'Need Nothing More',
        artist: '4 Flavours of Mercury',
    },
    {
        name: 'Summer Sands 2020',
        displayName: 'Summer Sands 2020',
        artist: '4 Flavours of Mercury',
    },
    {
        name: 'That Love',
        displayName: 'That Love',
        artist: '4 Flavours of Mercury',
    },
    {
        name: 'Ah Yes',
        displayName: 'Ah Yes',
        artist: '4 Flavours of Mercury',
    },
];

// Check if Playing
let isPlaying = false;

// Play
function playSong() {
    isPlaying = true;
    playBtn.classList.replace('fa-play', 'fa-pause');
    playBtn.setAttribute('title', 'Pause');
    music.play();
}

// Pause
function pauseSong() {
    isPlaying = false;
    playBtn.classList.replace('fa-pause', 'fa-play');
    playBtn.setAttribute('title', 'Play');
    music.pause();
}

// Play or Pause Event Listener
playBtn.addEventListener('click', () => (isPlaying ? pauseSong() : playSong()));

//Update DOM
function loadSong(song) {
    title.textContent = song.displayName;
    artist.textContent = song.artist;
    music.src = `music/${song.name}.mp3`;
    image.src = `img/${song.name}.jpg`;
}

// Current Song
let songIndex = 0;

//Previous Song
function prevSong() {
    songIndex--;
    if (songIndex < 0) {
        songIndex = songs.length -1;
    }
    loadSong(songs[songIndex]);
    playSong();
    }

//Next Song
function nextSong() {
    songIndex++;
    if (songIndex > songs.length -1) {
        songIndex = 0;
    }
    loadSong(songs[songIndex]);
    playSong();
}

// On Load - Select First Song
loadSong(songs[songIndex]);

// Update Progress Bar & Time
function updateProgressBar(e) {
    if (isPlaying) {
        const { duration, currentTime } = e.srcElement;
        // Update progress bar width
        const progressPercent = (currentTime / duration) * 100;
        progress.style.width = `${progressPercent}%`;
        // Calculate display for duration
        const durationMinutes = Math.floor(duration / 60);
        let durationSeconds = Math.floor(duration % 60);
        if (durationSeconds < 10) {
        durationSeconds = `0${durationSeconds}`;
    }
    console.log('seconds', durationSeconds);   
    // Delay switching duration element to avoid NaN  (Not a Number)
    if (durationSeconds) {
        durationEl.textContent = `${durationMinutes}:${durationSeconds}`;
    }
            // Calculate display for current
            const currentMinutes = Math.floor(currentTime / 60);
            let currentSeconds = Math.floor(currentTime % 60);
            if (currentSeconds < 10) {
            currentSeconds = `0${currentSeconds}`;
        }
        currentTimeEl.textContent = `${currentMinutes}:${currentSeconds}`;
    }
}

// Set Progress Bar
function setProgressBar(e) {
    const width = this.clientWidth;
    const clickX = e.offsetX;
    const { duration } = music;
    music.currentTime = (clickX / width) * duration;
}

//Event Listeners
prevBtn.addEventListener('click', prevSong);
nextBtn.addEventListener('click', nextSong);
music.addEventListener('ended', nextSong);
music.addEventListener('timeupdate', updateProgressBar);
progressContainer.addEventListener('click', setProgressBar);