nextcloud-app-radio/js/player.js

var MODULE = (function (radio) {

  var last_volume = 0;

  // Player icon pause/stop
  var vid = document.getElementById("player");
  vid.onwaiting = function () {
      $('#playbutton').attr("class", "buffering");
  };
   vid.onplaying = function () {
      $('#playbutton').attr("class", "pause");
  };
  vid.onpause = function () {
     $('#playbutton').attr("class", "play");
  };

  radio.isElementOverflowing = function(element) {
  	var overflowX = element.offsetWidth < element.scrollWidth,
  		overflowY = element.offsetHeight < element.scrollHeight;

  	return (overflowX || overflowY);
  }

  radio.wrapContentsInMarquee = function(element) {
    var marquee = document.createElement('marquee'),
    contents = element.innerText;

    marquee.innerText = contents;
    element.innerHTML = '';
    element.appendChild(marquee);
  }

  /* Playbutton click */
  $('#playbutton').click(function() {
    var music = document.getElementById('player');
    if (music.paused && $("#player").attr("src") != "") {
      music.play();
    } else {
      music.pause();
    }
  });

  radio.action_play = function(stationid){
    $.ajax({
      method: "GET",
      url: "https://www.radio-browser.info/webservice/v2/json/url/"+stationid,
      dataType: 'json',
      success: function(data){
        var streamurl = data['url'];
        $("#player").attr("src", streamurl);
        $('#player').trigger('play');
      }
    });
  };

  radio.debounce = function(func, wait, immediate) {
    var timeout;
    return function() {
      var context = this,
        args = arguments;
      var later = function() {
        timeout = null;
        if (!immediate) func.apply(context, args);
      };
      var callNow = immediate && !timeout;
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
      if (callNow) func.apply(context, args);
    };
  };

  // Volume slider
  $('#volumeslider').slider({
    orientation: "horizontal",
    value: player.volume,
    min: 0,
    max: 1,
    range: 'min',
    animate: true,
    step: .1,
    slide: function(e, ui) {
      player.volume = ui.value;
      if (ui.value < 0.1) {
        $("#volumeicon").removeClass();
        $("#volumeicon").attr("class","silent");
      }
      if (ui.value > 0.5) {
        $("#volumeicon").removeClass();
        $("#volumeicon").attr("class","full");
      }
      if (ui.value <= 0.5 && ui.value >= 0.1) {
        $("#volumeicon").removeClass();
        $("#volumeicon").attr("class","mid");
      }
    }
  });

  $("#volumeslider").on("slidestop", radio.debounce(function(e, ui) {
      radio.save_volume_state(ui.value);
    }, 700)
  );

  $("#volumeicon").on("click", function(e) {
    if (player.volume > 0) {
      last_volume = player.volume;
      player.volume = 0;
      $('#volumeslider').slider('value',0);
      radio.save_volume_state(0);
    } else {
      if (!last_volume == 0) {
        player.volume = last_volume;
        $('#volumeslider').slider('value',last_volume);
        radio.save_volume_state(last_volume);
      } else {
        player.volume = 1;
        $('#volumeslider').slider('value',1);
        radio.save_volume_state(1);
      }
    }
    if (player.volume < 0.1) {
      $("#volumeicon").removeClass();
      $("#volumeicon").attr("class","silent");
    }
    if (player.volume > 0.5) {
      $("#volumeicon").removeClass();
      $("#volumeicon").attr("class","full");
    }
    if (player.volume <= 0.5 && player.volume >= 0.1) {
      $("#volumeicon").removeClass();
      $("#volumeicon").attr("class","mid");
    }
  });

  radio.load_volume_state = function(){
    var volume_state = 0;
    var baseUrl = OC.generateUrl('/apps/radio/getVolumeState');
    $.get(baseUrl, function ( data ) {
      if ("volume_state" in data) {
        volume_state = data["volume_state"];
        if (volume_state == "") {
          player.volume = 1;
          last_volume = 1;
          $('#volumeslider').slider('value',1);
        } else {
          last_volume = volume_state;
          player.volume = Number(volume_state);
          $('#volumeslider').slider('value',Number(volume_state));
          if (volume_state < 0.1) {
            $("#volumeicon").removeClass();
            $("#volumeicon").attr("class","silent");
          }
          if (volume_state > 0.5) {
            $("#volumeicon").removeClass();
            $("#volumeicon").attr("class","full");
          }
          if (volume_state <= 0.5 && volume_state >= 0.1) {
            $("#volumeicon").removeClass();
            $("#volumeicon").attr("class","mid");
          }
        }
      }
      return true;
    });
  }

  radio.save_volume_state = function(volume_state) {
    var baseUrl = OC.generateUrl('/apps/radio/saveVolumeState');
    var settings = {
      "volume_state": volume_state
    };
    $.ajax({
            url: baseUrl,
            method: 'POST',
            contentType: 'application/json',
            data: JSON.stringify(settings)
    }).done(function(data){
      return true;
    });
  }

  // Load volume state
  radio.load_volume_state();

  return radio;
}(MODULE || {}));