<!-- Tracks used in this music/audio player application are free to use. I downloaded them from Soundcloud and NCS websites. I am not the owner of these tracks. -->

<div id="app-cover">
  <div id="bg-artwork"></div>
  <div id="bg-layer"></div>
  <div id="player">
    <div id="player-track">
      <div id="album-name"></div>
      <div id="track-name"></div>
      <div id="track-time">
        <div id="current-time"></div>
        <div id="track-length"></div>
      </div>
      <div id="s-area">
        <div id="ins-time"></div>
        <div id="s-hover"></div>
        <div id="seek-bar"></div>
      </div>
    </div>
    <div id="player-content">
      <div id="album-art">
        <img src="https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_1.jpg" class="active" id="_1">
        <img src="https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_2.jpg" id="_2">
        <img src="https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_3.jpg" id="_3">
        <img src="https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_4.jpg" id="_4">
        <img src="https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_5.jpg" id="_5">
        <div id="buffer-box">Buffering ...</div>
      </div>
      <div id="player-controls">
        <div class="control">
          <div class="button" id="play-previous">
            <i class="fas fa-backward"></i>
          </div>
        </div>
        <div class="control">
          <div class="button" id="play-pause-button">
            <i class="fas fa-play"></i>
          </div>
        </div>
        <div class="control">
          <div class="button" id="play-next">
            <i class="fas fa-forward"></i>
          </div>
        </div>
      </div>
    </div>
  </div>
</div>

*:focus {
  outline: none;
}

body {
  font-family: Helvetica, Arial;
  margin: 0;
  background-color: #ffeff5;
}

#app-cover {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  width: 430px;
  height: 100px;
  margin: -4px auto;
}

#bg-artwork {
  position: fixed;
  top: -30px;
  right: -30px;
  bottom: -30px;
  left: -30px;
  background-image: url("https://raw.githubusercontent.com/himalayasingh/music-player-1/master/img/_1.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 50%;
  filter: blur(40px);
  -webkit-filter: blur(40px);
  z-index: 1;
}

#bg-layer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background-color: #fff;
  opacity: 0.51;
  z-index: 2;
}

#player {
  position: relative;
  height: 100%;
  z-index: 3;
}

#player-track {
  position: absolute;
  top: 0;
  right: 15px;
  left: 15px;
  padding: 13px 22px 10px 184px;
  background-color: #fff7f7;
  border-radius: 15px 15px 0 0;
  transition: 0.3s ease top;
  z-index: 1;
}

#player-track.active {
  top: -92px;
}

#album-name {
  color: #54576f;
  font-size: 17px;
  font-weight: bold;
}

#track-name {
  color: #acaebd;
  font-size: 13px;
  margin: 2px 0 13px 0;
}

#track-time {
  height: 12px;
  margin-bottom: 3px;
  overflow: hidden;
}

#current-time {
  float: left;
}

#track-length {
  float: right;
}

#current-time,
#track-length {
  color: transparent;
  font-size: 11px;
  background-color: #ffe8ee;
  border-radius: 10px;
  transition: 0.3s ease all;
}

#track-time.active #current-time,
#track-time.active #track-length {
  color: #f86d92;
  background-color: transparent;
}

#s-area,
#seek-bar {
  position: relative;
  height: 4px;
  border-radius: 4px;
}

#s-area {
  background-color: #ffe8ee;
  cursor: pointer;
}

#ins-time {
  position: absolute;
  top: -29px;
  color: #fff;
  font-size: 12px;
  white-space: pre;
  padding: 5px 6px;
  border-radius: 4px;
  display: none;
}

#s-hover {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  opacity: 0.2;
  z-index: 2;
}

#ins-time,
#s-hover {
  background-color: #3b3d50;
}

#seek-bar {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 0;
  background-color: #fd6d94;
  transition: 0.2s ease width;
  z-index: 1;
}

#player-content {
  position: relative;
  height: 100%;
  background-color: #fff;
  box-shadow: 0 30px 80px #656565;
  border-radius: 15px;
  z-index: 2;
}

#album-art {
  position: absolute;
  top: -40px;
  width: 115px;
  height: 115px;
  margin-left: 40px;
  transform: rotateZ(0);
  transition: 0.3s ease all;
  box-shadow: 0 0 0 10px #fff;
  border-radius: 50%;
  overflow: hidden;
}

#album-art.active {
  top: -60px;
  box-shadow: 0 0 0 4px #fff7f7, 0 30px 50px -15px #afb7c1;
}

#album-art:before {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  width: 20px;
  height: 20px;
  margin: -10px auto 0 auto;
  background-color: #d6dee7;
  border-radius: 50%;
  box-shadow: inset 0 0 0 2px #fff;
  z-index: 2;
}

#album-art img {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  z-index: -1;
}

#album-art img.active {
  opacity: 1;
  z-index: 1;
}

#album-art.active img.active {
  z-index: 1;
  animation: rotateAlbumArt 3s linear 0s infinite forwards;
}

@keyframes rotateAlbumArt {
  0% {
    transform: rotateZ(0);
  }
  100% {
    transform: rotateZ(360deg);
  }
}

#buffer-box {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  height: 13px;
  color: #1f1f1f;
  font-size: 13px;
  font-family: Helvetica;
  text-align: center;
  font-weight: bold;
  line-height: 1;
  padding: 6px;
  margin: -12px auto 0 auto;
  background-color: rgba(255, 255, 255, 0.19);
  opacity: 0;
  z-index: 2;
}

#album-art img,
#buffer-box {
  transition: 0.1s linear all;
}

#album-art.buffering img {
  opacity: 0.25;
}

#album-art.buffering img.active {
  opacity: 0.8;
  filter: blur(2px);
  -webkit-filter: blur(2px);
}

#album-art.buffering #buffer-box {
  opacity: 1;
}

#player-controls {
  width: 250px;
  height: 100%;
  margin: 0 5px 0 141px;
  float: right;
  overflow: hidden;
}

.control {
  width: 33.333%;
  float: left;
  padding: 12px 0;
}

.button {
  width: 26px;
  height: 26px;
  padding: 25px;
  background-color: #fff;
  border-radius: 6px;
  cursor: pointer;
}

.button i {
  display: block;
  color: #d6dee7;
  font-size: 26px;
  text-align: center;
  line-height: 1;
}

.button,
.button i {
  transition: 0.2s ease all;
}

.button:hover {
  background-color: #d6d6de;
}

.button:hover i {
  color: #fff;
}

$(function () {
  var playerTrack = $("#player-track"),
    bgArtwork = $("#bg-artwork"),
    bgArtworkUrl,
    albumName = $("#album-name"),
    trackName = $("#track-name"),
    albumArt = $("#album-art"),
    sArea = $("#s-area"),
    seekBar = $("#seek-bar"),
    trackTime = $("#track-time"),
    insTime = $("#ins-time"),
    sHover = $("#s-hover"),
    playPauseButton = $("#play-pause-button"),
    i = playPauseButton.find("i"),
    tProgress = $("#current-time"),
    tTime = $("#track-length"),
    seekT,
    seekLoc,
    seekBarPos,
    cM,
    ctMinutes,
    ctSeconds,
    curMinutes,
    curSeconds,
    durMinutes,
    durSeconds,
    playProgress,
    bTime,
    nTime = 0,
    buffInterval = null,
    tFlag = false,
    albums = [
      "Dawn",
      "Me & You",
      "Electro Boy",
      "Home",
      "Proxy (Original Mix)"
    ],
    trackNames = [
      "Skylike - Dawn",
      "Alex Skrindo - Me & You",
      "Kaaze - Electro Boy",
      "Jordan Schor - Home",
      "Martin Garrix - Proxy"
    ],
    albumArtworks = ["_1", "_2", "_3", "_4", "_5"],
    trackUrl = [
      "https://raw.githubusercontent.com/himalayasingh/music-player-1/master/music/2.mp3",
      "https://raw.githubusercontent.com/himalayasingh/music-player-1/master/music/1.mp3",
      "https://raw.githubusercontent.com/himalayasingh/music-player-1/master/music/3.mp3",
      "https://raw.githubusercontent.com/himalayasingh/music-player-1/master/music/4.mp3",
      "https://raw.githubusercontent.com/himalayasingh/music-player-1/master/music/5.mp3"
    ],
    playPreviousTrackButton = $("#play-previous"),
    playNextTrackButton = $("#play-next"),
    currIndex = -1;

  function playPause() {
    setTimeout(function () {
      if (audio.paused) {
        playerTrack.addClass("active");
        albumArt.addClass("active");
        checkBuffering();
        i.attr("class", "fas fa-pause");
        audio.play();
      } else {
        playerTrack.removeClass("active");
        albumArt.removeClass("active");
        clearInterval(buffInterval);
        albumArt.removeClass("buffering");
        i.attr("class", "fas fa-play");
        audio.pause();
      }
    }, 300);
  }

  function showHover(event) {
    seekBarPos = sArea.offset();
    seekT = event.clientX - seekBarPos.left;
    seekLoc = audio.duration * (seekT / sArea.outerWidth());

    sHover.width(seekT);

    cM = seekLoc / 60;

    ctMinutes = Math.floor(cM);
    ctSeconds = Math.floor(seekLoc - ctMinutes * 60);

    if (ctMinutes < 0 || ctSeconds < 0) return;

    if (ctMinutes < 0 || ctSeconds < 0) return;

    if (ctMinutes < 10) ctMinutes = "0" + ctMinutes;
    if (ctSeconds < 10) ctSeconds = "0" + ctSeconds;

    if (isNaN(ctMinutes) || isNaN(ctSeconds)) insTime.text("--:--");
    else insTime.text(ctMinutes + ":" + ctSeconds);

    insTime.css({ left: seekT, "margin-left": "-21px" }).fadeIn(0);
  }

  function hideHover() {
    sHover.width(0);
    insTime.text("00:00").css({ left: "0px", "margin-left": "0px" }).fadeOut(0);
  }

  function playFromClickedPos() {
    audio.currentTime = seekLoc;
    seekBar.width(seekT);
    hideHover();
  }

  function updateCurrTime() {
    nTime = new Date();
    nTime = nTime.getTime();

    if (!tFlag) {
      tFlag = true;
      trackTime.addClass("active");
    }

    curMinutes = Math.floor(audio.currentTime / 60);
    curSeconds = Math.floor(audio.currentTime - curMinutes * 60);

    durMinutes = Math.floor(audio.duration / 60);
    durSeconds = Math.floor(audio.duration - durMinutes * 60);

    playProgress = (audio.currentTime / audio.duration) * 100;

    if (curMinutes < 10) curMinutes = "0" + curMinutes;
    if (curSeconds < 10) curSeconds = "0" + curSeconds;

    if (durMinutes < 10) durMinutes = "0" + durMinutes;
    if (durSeconds < 10) durSeconds = "0" + durSeconds;

    if (isNaN(curMinutes) || isNaN(curSeconds)) tProgress.text("00:00");
    else tProgress.text(curMinutes + ":" + curSeconds);

    if (isNaN(durMinutes) || isNaN(durSeconds)) tTime.text("00:00");
    else tTime.text(durMinutes + ":" + durSeconds);

    if (
      isNaN(curMinutes) ||
      isNaN(curSeconds) ||
      isNaN(durMinutes) ||
      isNaN(durSeconds)
    )
      trackTime.removeClass("active");
    else trackTime.addClass("active");

    seekBar.width(playProgress + "%");

    if (playProgress == 100) {
      i.attr("class", "fa fa-play");
      seekBar.width(0);
      tProgress.text("00:00");
      albumArt.removeClass("buffering").removeClass("active");
      clearInterval(buffInterval);
    }
  }

  function checkBuffering() {
    clearInterval(buffInterval);
    buffInterval = setInterval(function () {
      if (nTime == 0 || bTime - nTime > 1000) albumArt.addClass("buffering");
      else albumArt.removeClass("buffering");

      bTime = new Date();
      bTime = bTime.getTime();
    }, 100);
  }

  function selectTrack(flag) {
    if (flag == 0 || flag == 1) ++currIndex;
    else --currIndex;

    if (currIndex > -1 && currIndex < albumArtworks.length) {
      if (flag == 0) i.attr("class", "fa fa-play");
      else {
        albumArt.removeClass("buffering");
        i.attr("class", "fa fa-pause");
      }

      seekBar.width(0);
      trackTime.removeClass("active");
      tProgress.text("00:00");
      tTime.text("00:00");

      currAlbum = albums[currIndex];
      currTrackName = trackNames[currIndex];
      currArtwork = albumArtworks[currIndex];

      audio.src = trackUrl[currIndex];

      nTime = 0;
      bTime = new Date();
      bTime = bTime.getTime();

      if (flag != 0) {
        audio.play();
        playerTrack.addClass("active");
        albumArt.addClass("active");

        clearInterval(buffInterval);
        checkBuffering();
      }

      albumName.text(currAlbum);
      trackName.text(currTrackName);
      albumArt.find("img.active").removeClass("active");
      $("#" + currArtwork).addClass("active");

      bgArtworkUrl = $("#" + currArtwork).attr("src");

      bgArtwork.css({ "background-image": "url(" + bgArtworkUrl + ")" });
    } else {
      if (flag == 0 || flag == 1) --currIndex;
      else ++currIndex;
    }
  }

  function initPlayer() {
    audio = new Audio();

    selectTrack(0);

    audio.loop = false;

    playPauseButton.on("click", playPause);

    sArea.mousemove(function (event) {
      showHover(event);
    });

    sArea.mouseout(hideHover);

    sArea.on("click", playFromClickedPos);

    $(audio).on("timeupdate", updateCurrTime);

    playPreviousTrackButton.on("click", function () {
      selectTrack(-1);
    });
    playNextTrackButton.on("click", function () {
      selectTrack(1);
    });
  }

  initPlayer();
});