ympd/htdocs/js/mpd.js

/* ympd
   (c) 2013-2014 Andrew Karpow <andy@ndyk.de>
   This project's homepage is: https://www.ympd.org
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License along
   with this program; if not, write to the Free Software Foundation, Inc.,
   Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

var TOKEN = "";

var socket;
var last_state;
var last_outputs;
var current_app;
var pagination = 0;
var browsepath;
var lastSongTitle = "";
var current_song = new Object();
var MAX_ELEMENTS_PER_PAGE = 512;
var dirble_selected_cat = "";
var dirble_catid = "";
var dirble_page = 1;
var isTouch = Modernizr.touch ? 1 : 0;
var filter = undefined;
var dirble_api_token = "";
var dirble_stations = false;

var app = $.sammy(function() {

    function runBrowse() {
        current_app = 'queue';

        $('#breadcrump').addClass('hide');
        $('#filter').addClass('hide');
        $('#salamisandwich').removeClass('hide').find("tr:gt(0)").remove();
        $('#dirble_panel').addClass('hide');
        socket.send('MPD_API_GET_QUEUE,'+pagination);

        $('#panel-heading').text("Queue");
        $('#panel-heading-info').empty();

        $('#queue').addClass('active');
    }

    function prepare() {
        $('#nav_links > li').removeClass('active');
        $('.page-btn').addClass('hide');
        $('#add-all-songs').hide();
        pagination = 0;
        browsepath = '';
    }

    this.get(/\#\/(\d+)/, function() {
        prepare();
        pagination = parseInt(this.params['splat'][0]);
        runBrowse();
    });

    this.get(/\#\/browse\/(\d+)\/(.*)/, function() {
        prepare();
        browsepath = this.params['splat'][1];
        pagination = parseInt(this.params['splat'][0]);
        current_app = 'browse';
        $('#breadcrump').removeClass('hide').empty().append("<li><a href=\"#/browse/0/\" onclick=\"set_filter()\">root</a></li>");
        $('#filter').removeClass('hide');
        $('#salamisandwich').removeClass('hide').find("tr:gt(0)").remove();
        $('#dirble_panel').addClass('hide');
        socket.send('MPD_API_GET_BROWSE,'+pagination+','+(browsepath ? browsepath : "/"));
        // Don't add all songs from root
        if (browsepath) {
            var add_all_songs = $('#add-all-songs');
            add_all_songs.off(); // remove previous binds
            add_all_songs.on('click', function() {
                socket.send('MPD_API_ADD_TRACK,'+browsepath);
            });
            add_all_songs.show();
        }

        $('#panel-heading').text("Browse database: "+browsepath);
        var path_array = browsepath.split('/');
        var full_path = "";
        $.each(path_array, function(index, chunk) {
            if(path_array.length - 1 == index) {
                $('#breadcrump').append("<li class=\"active\">"+ chunk + "</li>");
                return;
            }

            full_path = full_path + chunk;
            $('#breadcrump').append("<li><a href=\"#/browse/0/" + full_path + "\">"+chunk+"</a></li>");
            full_path += "/";
        });
        $('#browse').addClass('active');
    });

    this.get(/\#\/search\/(.*)/, function() {
        current_app = 'search';
        $('#salamisandwich').find("tr:gt(0)").remove();
        $('#dirble_panel').addClass('hide');
        var searchstr = this.params['splat'][0];

        $('#search > div > input').val(searchstr);
        socket.send('MPD_API_SEARCH,' + searchstr);

        $('#panel-heading').text("Search: "+searchstr);
    });

    this.get(/\#\/dirble\/(\d+)\/(\d+)/, function() {
        
        if (TOKEN === "") context.redirect("#/0");
        
        prepare();
        current_app = 'dirble';
        $('#breadcrump').removeClass('hide').empty().append("<li><a href=\"#/dirble/\">Categories</a></li><li>"+dirble_selected_cat+"</li>");
        $('#salamisandwich').addClass('hide');
        $('#dirble_panel').removeClass('hide');
        $('#dirble_loading').removeClass('hide');
        $('#dirble_left').find("tr:gt(0)").remove();
        $('#dirble_right').find("tr:gt(0)").remove();

        $('#panel-heading').text("Dirble");
        $('#panel-heading-info').empty();

        $('#dirble').addClass('active');

        $('#next').addClass('hide');

        if (this.params['splat'][1] > 1) $('#prev').removeClass('hide');
        else $('#prev').addClass('hide');

        dirble_catid = this.params['splat'][0];
        dirble_page = this.params['splat'][1];

        dirble_stations = true;

        if (dirble_api_token) { dirble_load_stations(); }
    });

    this.get(/\#\/dirble\//, function() {
        
        if (TOKEN === "") context.redirect("#/0");
        
        prepare();
        current_app = 'dirble';
        $('#breadcrump').removeClass('hide').empty().append("<li>Categories</li>");
        $('#salamisandwich').addClass('hide');
        $('#dirble_panel').removeClass('hide');
        $('#dirble_loading').removeClass('hide');
        $('#dirble_left').find("tr:gt(0)").remove();
        $('#dirble_right').find("tr:gt(0)").remove();

        $('#panel-heading').text("Dirble");
        $('#panel-heading-info').empty();

        $('#dirble').addClass('active');

        dirble_stations = false;

        if (dirble_api_token) { dirble_load_categories(); }
    });

    this.get("/", function(context) {
        context.redirect("#/0");
    });
});

$(document).ready(function(){
    webSocketConnect();
    $("#volumeslider").slider(0);
    $("#volumeslider").on('slider.newValue', function(evt,data){
        socket.send("MPD_API_SET_VOLUME,"+data.val);
    });
    $('#progressbar').slider(0);
    $("#progressbar").on('slider.newValue', function(evt,data){
        if(current_song && current_song.currentSongId >= 0) {
            var seekVal = Math.ceil(current_song.totalTime*(data.val/100));
            socket.send("MPD_API_SET_SEEK,"+current_song.currentSongId+","+seekVal);
        }
    });

    $('#addstream').on('shown.bs.modal', function () {
        $('#streamurl').focus();
     })
    $('#addstream form').on('submit', function (e) {
        addStream();
    });

    if(!notificationsSupported())
        $('#btnnotify').addClass("disabled");
    else
        if ($.cookie("notification") === "true")
            $('#btnnotify').addClass("active")

    add_filter();
	
    document.getElementById('player').addEventListener('stalled', function() {
						if ( !document.getElementById('player').paused ) {
							this.pause();
							clickLocalPlay();
							$('.top-right').notify({
								message:{text:"music stream stalled - trying to recover..."},
								type: "danger",
								fadeOut: { enabled: true, delay: 1000 },
							}).show();
						}
    });

    document.getElementById('player').addEventListener('pause', function() {
        this.src='';
        this.removeAttribute("src");
    	$("#localplay-icon").removeClass("glyphicon-pause").addClass("glyphicon-play");
    });

	document.getElementById('player').addEventListener('error', function failed(e) {
		this.pause();
		switch (e.target.error.code) {
			case e.target.error.MEDIA_ERR_ABORTED:
				$('.top-right').notify({
					message:{text:"Audio playback aborted by user."},
					type: "info",
					fadeOut: { enabled: true, delay: 1000 },
				}).show();
				break;
			case e.target.error.MEDIA_ERR_NETWORK:
				$('.top-right').notify({
					message:{text:"Network error while playing audio."},
					type: "danger",
					fadeOut: { enabled: true, delay: 1000 },
				}).show();
				break;
			case e.target.error.MEDIA_ERR_DECODE:
				$('.top-right').notify({
					message:{text:"Audio playback aborted. Did you unplug your headphones?"},
					type: "danger",
					fadeOut: { enabled: true, delay: 1000 },
				}).show();
				break;
			case e.target.error.MEDIA_ERR_SRC_NOT_SUPPORTED:
				$('.top-right').notify({
					message:{text:"Error while loading audio (server, network or format error)."},
					type: "danger",
					fadeOut: { enabled: true, delay: 1000 },
				}).show();
				break;
			default:
				$('.top-right').notify({
					message:{text:"Unknown error while playing audio."},
					type: "danger",
					fadeOut: { enabled: true, delay: 1000 },
				}).show();
				break;
		}
	}, true);
            
    if (TOKEN === "") $('#dirble').addClass('hide');
});

function webSocketConnect() {
    if (typeof MozWebSocket != "undefined") {
        socket = new MozWebSocket(get_appropriate_ws_url());
    } else {
        socket = new WebSocket(get_appropriate_ws_url());
    }

    try {
        socket.onopen = function() {
            console.log("connected");
            $('.top-right').notify({
                message:{text:"Connected to ympd"},
                fadeOut: { enabled: true, delay: 500 }
            }).show();

            app.run();
            /* emit initial request for output names */
            socket.send('MPD_API_GET_OUTPUTS');
            /* emit initial request for dirble api token */
            socket.send('MPD_API_GET_DIRBLEAPITOKEN');
        }

        socket.onmessage = function got_packet(msg) {
            if(msg.data === last_state || msg.data.length == 0)
                return;

            var obj = JSON.parse(msg.data);
            

            switch (obj.type) {
                case 'queue':
                    if(current_app !== 'queue')
                        break;

                    if (obj.totalTime > 0) {
                        var hours = Math.floor(obj.totalTime / 3600);
                        var minutes = Math.floor(obj.totalTime / 60) - hours * 60;
                        var seconds = obj.totalTime - hours * 3600 - minutes * 60;

                        $('#panel-heading-info').text('Total: ' +
                            (hours > 0 ? hours + '\u2009h ' + (minutes < 10 ? '0' : '') : '') +
                            minutes + '\u2009m ' + (seconds < 10 ? '0' : '') + seconds + '\u2009s');
                    } else {
                        $('#panel-heading-info').empty();
                    }

                    $('#salamisandwich > tbody').empty();
                    for (var song in obj.data) {
                        var minutes = Math.floor(obj.data[song].duration / 60);
                        var seconds = obj.data[song].duration - minutes * 60;

                        $('#salamisandwich > tbody').append(
                            "<tr trackid=\"" + obj.data[song].id + "\"><td>" + (obj.data[song].pos + 1) + "</td>" +
                                "<td>"+ obj.data[song].title +"</td>" +
                                "<td>"+ obj.data[song].album +"</td>" +
                                "<td>"+ obj.data[song].artist +"</td>" + 
                                "<td>"+ minutes + ":" + (seconds < 10 ? '0' : '') + seconds +
                        "</td><td></td></tr>");
                    }

                    if(obj.data.length && obj.data[obj.data.length-1].pos + 1 >= pagination + MAX_ELEMENTS_PER_PAGE)
                        $('#next').removeClass('hide');
                    if(pagination > 0)
                        $('#prev').removeClass('hide');
                    if ( isTouch ) {
                        $('#salamisandwich > tbody > tr > td:last-child').append(
                                    "<a class=\"pull-right btn-group-hover\" href=\"#/\" " +
                                        "onclick=\"trash($(this).parents('tr'));\">" +
                                "<span class=\"glyphicon glyphicon-trash\"></span></a>");
                    } else {
                        $('#salamisandwich > tbody > tr').on({
                            mouseover: function(){
                                var doomed = $(this);
                                if ( $('#btntrashmodeup').hasClass('active') )
                                    doomed = $("#salamisandwich > tbody > tr:lt(" + ($(this).index() + 1) + ")");
                                if ( $('#btntrashmodedown').hasClass('active') )
                                    doomed = $("#salamisandwich > tbody > tr:gt(" + ($(this).index() - 1) + ")");
                                $.each(doomed, function(){
                                if($(this).children().last().has("a").length == 0)
                                    $(this).children().last().append(
                                        "<a class=\"pull-right btn-group-hover\" href=\"#/\" " +
                                            "onclick=\"trash($(this).parents('tr'));\">" +
                                    "<span class=\"glyphicon glyphicon-trash\"></span></a>")
                                .find('a').fadeTo('fast',1);
                                });
                            },
                            mouseleave: function(){
                                var doomed = $(this);
                                if ( $('#btntrashmodeup').hasClass('active') )
                                    doomed = $("#salamisandwich > tbody > tr:lt(" + ($(this).index() + 1) + ")");
                                if ( $('#btntrashmodedown').hasClass('active') )
                                    doomed = $("#salamisandwich > tbody > tr:gt(" + ($(this).index() - 1) + ")");
                                $.each(doomed, function(){$(this).children().last().find("a").stop().remove();});
                            }
                        });
                    };

                    $('#salamisandwich > tbody > tr').on({
                        click: function() {
                            $('#salamisandwich > tbody > tr').removeClass('active');
                            socket.send('MPD_API_PLAY_TRACK,'+$(this).attr('trackid'));
                            $(this).addClass('active');
                        },
                    });
                    //Helper function to keep table row from collapsing when being sorted
                    var fixHelperModified = function(e, tr) {
                      var $originals = tr.children();
                      var $helper = tr.clone();
                      $helper.children().each(function(index)
                      {
                        $(this).width($originals.eq(index).width())
                      });
                      return $helper;
                    };
                    
                    //Make queue table sortable
                    $('#salamisandwich > tbody').sortable({
                      helper: fixHelperModified,
                      stop: function(event,ui) {renumber_table('#salamisandwich',ui.item)}
                    }).disableSelection();
                    break;
                case 'search':
                    $('#wait').modal('hide');
                case 'browse':
                    if(current_app !== 'browse' && current_app !== 'search')
                        break;

                    /* The use of encodeURI() below might seem useless, but it's not. It prevents
                     * some browsers, such as Safari, from changing the normalization form of the
                     * URI from NFD to NFC, breaking our link with MPD.
                     */
                    if ($('#salamisandwich > tbody').is(':ui-sortable')) {
                        $('#salamisandwich > tbody').sortable('destroy');
                    }
                    for (var item in obj.data) {
                        switch(obj.data[item].type) {
                            case 'directory':
                                var clazz = 'dir';
                                if (filter !== undefined) {
                                    var first = obj.data[item].dir[0];
                                    if (filter === "#" && isNaN(first)) {
                                        clazz += ' hide';
                                    } else if (filter >= "A" && filter <= "Z" && first.toUpperCase() !== filter) {
                                        clazz += ' hide';
                                    } else if (filter === "||") {
                                        clazz += ' hide';
                                    }
                                }
                                $('#salamisandwich > tbody').append(
                                    "<tr uri=\"" + encodeURI(obj.data[item].dir) + "\" class=\"" + clazz + "\">" +
                                    "<td><span class=\"glyphicon glyphicon-folder-open\"></span></td>" +
                                    "<td colspan=\"3\"><a>" + basename(obj.data[item].dir) + "</a></td>" +
                                    "<td></td><td></td></tr>"
                                );
                                break;
                            case 'playlist':
                                var clazz = 'plist';
                                if (filter !== "||") {
                                    clazz += ' hide';
                                }
                                $('#salamisandwich > tbody').append(
                                    "<tr uri=\"" + encodeURI(obj.data[item].plist) + "\" class=\"" + clazz + "\">" +
                                    "<td><span class=\"glyphicon glyphicon-list\"></span></td>" +
                                    "<td colspan=\"3\"><a>" + basename(obj.data[item].plist) + "</a></td>" +
                                    "<td></td><td></td></tr>"
                                );
                                break;
                            case 'song':
                                var minutes = Math.floor(obj.data[item].duration / 60);
                                var seconds = obj.data[item].duration - minutes * 60;

                                if (obj.data[item].artist == null) {
                                    var artist = "<td colspan=\"2\">";
                                } else {
                                    var artist = "<td>" + obj.data[item].artist +
                                                     "<span>" + obj.data[item].album + "</span></td><td>";
                                }

                                $('#salamisandwich > tbody').append(
                                    "<tr uri=\"" + encodeURI(obj.data[item].uri) + "\" class=\"song\">" +
                                    "<td><span class=\"glyphicon glyphicon-music\"></span></td>" + 
                                    "<td>" + obj.data[item].title  + "</td>" +
                                    "<td>" + obj.data[item].album  + "</td>" +
                                    "<td>" + obj.data[item].artist + "</td>" + 
                                    "<td>" + minutes + ":" + (seconds < 10 ? '0' : '') + seconds +
                                    "</td><td></td></tr>"
                                );
                                break;
                            case 'wrap':
                                if(current_app == 'browse') {
                                    $('#next').removeClass('hide');
                                } else {
                                    $('#salamisandwich > tbody').append(
                                        "<tr><td><span class=\"glyphicon glyphicon-remove\"></span></td>" +
                                        "<td colspan=\"3\">Too many results, please refine your search!</td>" +
                                        "<td></td><td></td></tr>"
                                    );
                                }
                                break;
                        }

                        if(pagination > 0)
                            $('#prev').removeClass('hide');

                    }

                    function appendClickableIcon(appendTo, onClickAction, glyphicon) {
                        $(appendTo).append(
                            "<a role=\"button\" class=\"pull-right btn-group-hover\">" +
                            "<span class=\"glyphicon glyphicon-" + glyphicon + "\"></span></a>")
                            .find('a').click(function(e) {
                                e.stopPropagation();
                                socket.send(onClickAction + "," + decodeURI($(this).parents("tr").attr("uri")));
                            $('.top-right').notify({
                                message:{
                                    text: "\"" + $('td:nth-last-child(3)', $(this).parents("tr")).text() + "\" added"
                                } }).show();
                            }).fadeTo('fast',1);
                    }

                    if ( isTouch ) {
                        appendClickableIcon($("#salamisandwich > tbody > tr.dir > td:last-child"), 'MPD_API_ADD_TRACK', 'plus');
                        appendClickableIcon($("#salamisandwich > tbody > tr.song > td:last-child"), 'MPD_API_ADD_TRACK', 'play');
                    } else {
                        $('#salamisandwich > tbody > tr').on({
                            mouseenter: function() {
                                if($(this).is(".dir")) 
                                    appendClickableIcon($(this).children().last(), 'MPD_API_ADD_TRACK', 'plus');
                                else if($(this).is(".song"))
                                    appendClickableIcon($(this).children().last(), 'MPD_API_ADD_PLAY_TRACK', 'play');
                            },
                            mouseleave: function(){
                                $(this).children().last().find("a").stop().remove();
                            }
                        });
                    };
                    $('#salamisandwich > tbody > tr').on({
                        click: function() {
                            switch($(this).attr('class')) {
                                case 'dir':
                                    pagination = 0;
                                    browsepath = $(this).attr("uri");
                                    $("#browse > a").attr("href", '#/browse/'+pagination+'/'+browsepath);
                                    app.setLocation('#/browse/'+pagination+'/'+browsepath);
                                    break;
                                case 'song':
                                    socket.send("MPD_API_ADD_TRACK," + decodeURI($(this).attr("uri")));
                                    $('.top-right').notify({
                                        message:{
                                            text: "\"" + $('td:nth-last-child(3)', this).text() + "\" added"
                                        }
                                    }).show();
                                    break;
                                case 'plist':
                                    socket.send("MPD_API_ADD_PLAYLIST," + decodeURI($(this).attr("uri")));
                                    $('.top-right').notify({
                                        message:{
                                            text: "\"" + $('td:nth-last-child(3)', this).text() + "\" added"
                                        }
                                    }).show();
                                    break;
                            }
                        }
                    });

                    break;
                case 'state':
                    updatePlayIcon(obj.data.state);
                    updateVolumeIcon(obj.data.volume);

                    if(JSON.stringify(obj) === JSON.stringify(last_state))
                        break;

                    current_song.totalTime  = obj.data.totalTime;
                    current_song.currentSongId = obj.data.currentsongid;
                    var total_minutes = Math.floor(obj.data.totalTime / 60);
                    var total_seconds = obj.data.totalTime - total_minutes * 60;

                    var elapsed_minutes = Math.floor(obj.data.elapsedTime / 60);
                    var elapsed_seconds = obj.data.elapsedTime - elapsed_minutes * 60;

                    $('#volumeslider').slider(obj.data.volume);
                    var progress = Math.floor(100*obj.data.elapsedTime/obj.data.totalTime);
                    $('#progressbar').slider(progress);

                    $('#counter')
                    .text(elapsed_minutes + ":" + 
                        (elapsed_seconds < 10 ? '0' : '') + elapsed_seconds + " / " +
                        total_minutes + ":" + (total_seconds < 10 ? '0' : '') + total_seconds);

                    $('#salamisandwich > tbody > tr').removeClass('active').css("font-weight", "");
                    $('#salamisandwich > tbody > tr[trackid='+obj.data.currentsongid+']').addClass('active').css("font-weight", "bold");

                    if(obj.data.random)
                        $('#btnrandom').addClass("active")
                    else
                        $('#btnrandom').removeClass("active");

                    if(obj.data.consume)
                        $('#btnconsume').addClass("active")
                    else
                        $('#btnconsume').removeClass("active");

                    if(obj.data.single)
                        $('#btnsingle').addClass("active")
                    else
                        $('#btnsingle').removeClass("active");

                    if(obj.data.crossfade)
                        $('#btncrossfade').addClass("active")
                    else
                        $('#btncrossfade').removeClass("active");

                    if(obj.data.repeat)
                        $('#btnrepeat').addClass("active")
                    else
                        $('#btnrepeat').removeClass("active");

                    last_state = obj;
                    break;
                case 'outputnames':
                    $('#btn-outputs-block button').remove();
                    if (obj.data.length > 1) {
		        $.each(obj.data, function(id, name){
                            var btn = $('<button id="btnoutput'+id+'" class="btn btn-default" onclick="toggleoutput(this, '+id+')"><span class="glyphicon glyphicon-volume-up"></span> '+name+'</button>');
                            btn.appendTo($('#btn-outputs-block'));
                        });
		    } else {
                        $('#btn-outputs-block').addClass('hide');
		    }
                    /* remove cache, since the buttons have been recreated */
                    last_outputs = '';
                    break;
                case 'outputs':
                    if(JSON.stringify(obj) === JSON.stringify(last_outputs))
                        break;
                    $.each(obj.data, function(id, enabled){
                        if (enabled)
                        $('#btnoutput'+id).addClass("active");
                        else
                        $('#btnoutput'+id).removeClass("active");
                    });
                    last_outputs = obj;
                    break;
                case 'disconnected':
                    if($('.top-right').has('div').length == 0)
                        $('.top-right').notify({
                            message:{text:"ympd lost connection to MPD "},
                            type: "danger",
                            fadeOut: { enabled: true, delay: 1000 },
                        }).show();
                    break;
                case 'update_queue':
                    if(current_app === 'queue')
                        socket.send('MPD_API_GET_QUEUE,'+pagination);
                    break;
                case 'song_change':

                    $('#album').text("");
                    $('#artist').text("");

					$('#btnlove').removeClass("active");

                    $('#currenttrack').text(" " + obj.data.title);
                    var notification = "<strong><h4>" + obj.data.title + "</h4></strong>";

                    if(obj.data.album) {
                        $('#album').text(obj.data.album);
                        notification += obj.data.album + "<br />";
                    }
                    if(obj.data.artist) {
                        $('#artist').text(obj.data.artist);
                        notification += obj.data.artist + "<br />";
                    }

                    if ($.cookie("notification") === "true")
                        songNotify(obj.data.title, obj.data.artist, obj.data.album );
                    else
                        $('.top-right').notify({
                            message:{html: notification},
                            type: "info",
                        }).show();
                        
                    break;
                case 'mpdhost':
                    $('#mpdhost').val(obj.data.host);
                    setLocalStream(obj.data.host);
                    $('#mpdport').val(obj.data.port);
                    if(obj.data.passwort_set)
                        $('#mpd_password_set').removeClass('hide');
                    break;
                case 'dirbleapitoken':
                    dirble_api_token = obj.data;
                    
		    if (dirble_api_token) {
		        $('#dirble').removeClass('hide');

                        if (dirble_stations) { dirble_load_stations();   }
                        else {                 dirble_load_categories(); }

                    } else {
                        $('#dirble').addClass('hide');
		    }
                    break;
                case 'error':
                    $('.top-right').notify({
                        message:{text: obj.data},
                        type: "danger",
                    }).show();
                default:
                    break;
            }
        }

        socket.onclose = function(){
            console.log("disconnected");
            $('.top-right').notify({
                message:{text:"Connection to ympd lost, retrying in 3 seconds "},
                type: "danger", 
                onClose: function () {
                    webSocketConnect();
                }
            }).show();
        }

    } catch(exception) {
        alert('<p>Error' + exception);
    }

}

function get_appropriate_ws_url()
{
    var pcol;
    var u = document.URL;
    var separator;

    /*
    /* We open the websocket encrypted if this page came on an
    /* https:// url itself, otherwise unencrypted
    /*/

    if (u.substring(0, 5) == "https") {
        pcol = "wss://";
        u = u.substr(8);
    } else {
        pcol = "ws://";
        if (u.substring(0, 4) == "http")
            u = u.substr(7);
    }

    u = u.split('#');

    if (/\/$/.test(u[0])) {
        separator = "";
    } else {
        separator = "/";
    }

    return pcol + u[0] + separator + "ws";
}

var updateVolumeIcon = function(volume)
{
    $("#volume-icon").removeClass("glyphicon-volume-off");
    $("#volume-icon").removeClass("glyphicon-volume-up");
    $("#volume-icon").removeClass("glyphicon-volume-down");

    if(volume == 0) {
        $("#volume-icon").addClass("glyphicon-volume-off");
    } else if (volume < 50) {
        $("#volume-icon").addClass("glyphicon-volume-down");
    } else {
        $("#volume-icon").addClass("glyphicon-volume-up");
    }
}

var updatePlayIcon = function(state)
{
    $("#play-icon").removeClass("glyphicon-play")
    .removeClass("glyphicon-pause");
    $('#track-icon').removeClass("glyphicon-play")
    .removeClass("glyphicon-pause")
    .removeClass("glyphicon-stop");

    if(state == 1) { // stop
        $("#play-icon").addClass("glyphicon-play");
        $('#track-icon').addClass("glyphicon-stop");
		document.getElementById('player').pause();
    } else if(state == 2) { // play
        $("#play-icon").addClass("glyphicon-pause");
        $('#track-icon').addClass("glyphicon-play");
    } else { // pause
        $("#play-icon").addClass("glyphicon-play");
        $('#track-icon').addClass("glyphicon-pause");
		document.getElementById('player').pause();
    }
}

function updateDB() {
    socket.send('MPD_API_UPDATE_DB');
    $('.top-right').notify({
        message:{text:"Updating MPD Database... "}
    }).show();
}

function clickPlay() {
    if($('#track-icon').hasClass('glyphicon-stop'))
        socket.send('MPD_API_SET_PLAY');
    else
        socket.send('MPD_API_SET_PAUSE');
}

function clickLocalPlay() {
    var player = document.getElementById('player');
    $("#localplay-icon").removeClass("glyphicon-play").removeClass("glyphicon-pause");
	

    if ( !$('#track-icon').hasClass('glyphicon-play') ) {
		clickPlay();
	}

    if ( player.paused ) {
        var mpdstream = $.cookie("mpdstream");

        if ( mpdstream ) {
            player.src = mpdstream;
            console.log("playing mpd stream: " + player.src);
            player.load();
            player.play();
            $("#localplay-icon").addClass("glyphicon-pause");
        } else {
            $("#mpdstream").change(function(){ clickLocalPlay(); $(this).unbind("change"); });
            $("#localplay-icon").addClass("glyphicon-play");
            getHost();
        }
    } else {
        player.pause();
    }
}

function setLocalStream(mpdhost) {
    var mpdstream = $.cookie("mpdstream");

    if ( !mpdstream ) {
        mpdstream = "http://";
        if ( mpdhost == "127.0.0.1" )
            mpdstream += window.location.hostname;
        else
            mpdstream += mpdhost;
        mpdstream += ":8000/";

        $.cookie("mpdstream", mpdstream, { expires: 424242 });
    }

    $("#mpdstream").val(mpdstream);
    $("#mpdstream").change();
}

function trash(tr) {
    if ( $('#btntrashmodeup').hasClass('active') ) {
        socket.send('MPD_API_RM_RANGE,0,' + (tr.index() + 1));
        tr.remove();
    } else if ( $('#btntrashmodesingle').hasClass('active') ) {
        socket.send('MPD_API_RM_TRACK,' + tr.attr('trackid'));
        tr.remove();
    } else if ( $('#btntrashmodedown').hasClass('active') ) {
        socket.send('MPD_API_RM_RANGE,' + tr.index() + ',-1');
        tr.remove();
    };
}

function renumber_table(tableID,item) {
    was = item.children("td").first().text();//Check if first item exists!
    is = item.index() + 1;//maybe add pagination

    if (was != is) {
        socket.send("MPD_API_MOVE_TRACK," + was + "," + is);
        socket.send('MPD_API_GET_QUEUE,'+pagination);
    }
}

function basename(path) {
    return path.split('/').reverse()[0];
}

function clickLove() {
    socket.send("MPD_API_SEND_MESSAGE,mpdas," + ($('#btnlove').hasClass('active') ? "unlove" : "love"));
	if ( $('#btnlove').hasClass('active') )
		$('#btnlove').removeClass("active");
	else
		$('#btnlove').addClass("active");
}

$('#btnrandom').on('click', function (e) {
    socket.send("MPD_API_TOGGLE_RANDOM," + ($(this).hasClass('active') ? 0 : 1));

});
$('#btnconsume').on('click', function (e) {
    socket.send("MPD_API_TOGGLE_CONSUME," + ($(this).hasClass('active') ? 0 : 1));

});
$('#btnsingle').on('click', function (e) {
    socket.send("MPD_API_TOGGLE_SINGLE," + ($(this).hasClass('active') ? 0 : 1));
});
$('#btncrossfade').on('click', function(e) {
    socket.send("MPD_API_TOGGLE_CROSSFADE," + ($(this).hasClass('active') ? 0 : 1));
});
$('#btnrepeat').on('click', function (e) {
    socket.send("MPD_API_TOGGLE_REPEAT," + ($(this).hasClass('active') ? 0 : 1));
});

function toggleoutput(button, id) {
    socket.send("MPD_API_TOGGLE_OUTPUT,"+id+"," + ($(button).hasClass('active') ? 0 : 1));
}

$('#trashmode').children("button").on('click', function(e) {
    $('#trashmode').children("button").removeClass("active");
    $(this).addClass("active");
});

$('#btnnotify').on('click', function (e) {
    if($.cookie("notification") === "true") {
        $.cookie("notification", false);
    } else {
        Notification.requestPermission(function (permission) {
            if(!('permission' in Notification)) {
                Notification.permission = permission;
            }

            if (permission === "granted") {
                $.cookie("notification", true, { expires: 424242 });
                $('btnnotify').addClass("active");
            }
        });
    }
});

function getHost() {
    socket.send('MPD_API_GET_MPDHOST');

    function onEnter(event) {
      if ( event.which == 13 ) {
        confirmSettings();
      }
    }

    $('#mpdhost').keypress(onEnter);
    $('#mpdport').keypress(onEnter);
    $('#mpdstream').keypress(onEnter);
    $('#mpd_pw').keypress(onEnter);
    $('#mpd_pw_con').keypress(onEnter);
}

$('#search').submit(function () {
    app.setLocation("#/search/"+$('#search > div > input').val());
    $('#wait').modal('show');
    setTimeout(function() {
        $('#wait').modal('hide');
    }, 10000);
    return false;
});

$('.page-btn').on('click', function (e) {

    switch ($(this).text()) {
        case "Next":
            if (current_app == "dirble") dirble_page++;
            else pagination += MAX_ELEMENTS_PER_PAGE;
            break;
        case "Previous":
            if (current_app == "dirble") dirble_page--
            else {
                pagination -= MAX_ELEMENTS_PER_PAGE;
                if(pagination <= 0)
                    pagination = 0;
            }
            break;
    }

    switch(current_app) {
        case "queue":
            app.setLocation('#/'+pagination);
            break;
        case "browse":
            app.setLocation('#/browse/'+pagination+'/'+browsepath);
            break;
        case "dirble":
            app.setLocation("#/dirble/"+dirble_catid+"/"+dirble_page);
            break;
    }
    e.preventDefault();
});

function addStream() {
    if($('#streamurl').val().length > 0) {
        socket.send('MPD_API_ADD_TRACK,'+$('#streamurl').val());
    }
    $('#streamurl').val("");
    $('#addstream').modal('hide');
}

function saveQueue() {
    if($('#playlistname').val().length > 0) {
        socket.send('MPD_API_SAVE_QUEUE,'+$('#playlistname').val());
    }
    $('#savequeue').modal('hide');
}

function confirmSettings() {
    if($('#mpd_pw').val().length + $('#mpd_pw_con').val().length > 0) {
        if ($('#mpd_pw').val() !== $('#mpd_pw_con').val())
        {
            $('#mpd_pw_con').popover('show');
            setTimeout(function() {
                $('#mpd_pw_con').popover('hide');
            }, 2000);
            return;
        } else
            socket.send('MPD_API_SET_MPDPASS,'+$('#mpd_pw').val());
    }
    socket.send('MPD_API_SET_MPDHOST,'+$('#mpdport').val()+','+$('#mpdhost').val());
    $.cookie("mpdstream", $("#mpdstream").val(), { expires: 424242 });
    $('#settings').modal('hide');
}

$('#mpd_password_set > button').on('click', function (e) {
    socket.send('MPD_API_SET_MPDPASS,');
    $('#mpd_pw').val("");
    $('#mpd_pw_con').val("");
    $('#mpd_password_set').addClass('hide');
})

function notificationsSupported() {
    return "Notification" in window;
}

function songNotify(title, artist, album) {
    /*var opt = {
        type: "list",
        title: title,
        message: title,
        items: []
    }
    if(artist.length > 0)
        opt.items.push({title: "Artist", message: artist});
    if(album.length > 0)
        opt.items.push({title: "Album", message: album});
*/
    //chrome.notifications.create(id, options, creationCallback);

    var textNotification = "";
    if(typeof artist != 'undefined' && artist.length > 0)
        textNotification += " " + artist;
    if(typeof album != 'undefined' && album.length > 0)
        textNotification += "\n " + album;

    var notification = new Notification(title, {icon: 'assets/favicon.ico', body: textNotification});
    setTimeout(function(notification) {
        notification.close();
    }, 3000, notification);
}

$(document).keydown(function(e){
    if (e.target.tagName == 'INPUT') {
        return;
    }
    switch (e.which) {
        case 37: //left
            socket.send('MPD_API_SET_PREV');
            break;
        case 39: //right
            socket.send('MPD_API_SET_NEXT');
            break;
        case 32: //space
            clickPlay();
            break;
        default:
            return;
    }
    e.preventDefault();
});

function dirble_load_categories() {

    dirble_page = 1;

    $.getJSON( "https://api.dirble.com/v2/categories?token=" + dirble_api_token, function( data ) {

        $('#dirble_loading').addClass('hide');

        data = data.sort(function(a, b) {
            return (a.title > b.title) ? 1 : 0;
        });

        var max = data.length - data.length%2;

        for(i = 0; i < max; i+=2) {

            $('#dirble_left > tbody').append(
                "<tr><td catid=\""+data[i].id+"\">"+data[i].title+"</td></tr>"
            );

            $('#dirble_right > tbody').append(
                "<tr><td catid=\""+data[i+1].id+"\">"+data[i+1].title+"</td></tr>"
            );
        }

        if (max != data.length) {
            $('#dirble_left > tbody').append(
                "<tr><td catid=\""+data[max].id+"\">"+data[max].title+"</td></tr>"
            );
        }

        $('#dirble_left > tbody > tr > td').on({
            click: function() {
                dirble_selected_cat = $(this).text();
                dirble_catid = $(this).attr("catid");
                app.setLocation("#/dirble/"+dirble_catid+"/"+dirble_page);
            }
        });

        $('#dirble_right > tbody > tr > td').on({
            click: function() {
                dirble_selected_cat = $(this).text();
                dirble_catid = $(this).attr("catid");
                app.setLocation("#/dirble/"+dirble_catid+"/"+dirble_page);
            }
        });
    });
}


function dirble_load_stations() {

    $.getJSON( "https://api.dirble.com/v2/category/"+dirble_catid+"/stations?page="+dirble_page+"&per_page=20&token=" + dirble_api_token, function( data ) {

        $('#dirble_loading').addClass('hide');
        if (data.length == 20) $('#next').removeClass('hide');

        var max = data.length - data.length%2;

        for(i = 0; i < max; i+=2) {

            $('#dirble_left > tbody').append(
                "<tr><td radioid=\""+data[i].id+"\">"+data[i].name+"</td></tr>"
            );
            $('#dirble_right > tbody').append(
                "<tr><td radioid=\""+data[i+1].id+"\">"+data[i+1].name+"</td></tr>"
            );
        }

        if (max != data.length) {
            $('#dirble_left > tbody').append(
                "<tr><td radioid=\""+data[max].id+"\">"+data[max].name+"</td></tr>"
            );
        }

        $('#dirble_left > tbody > tr > td').on({
            click: function() {
                var _this = $(this);

                $.getJSON( "https://api.dirble.com/v2/station/"+$(this).attr("radioid")+"?token=" + dirble_api_token, function( data ) {

                    socket.send("MPD_API_ADD_TRACK," + data.streams[0].stream);
                    $('.top-right').notify({
                        message:{
                            text: _this.text() + " added"
                        }
                    }).show();
                });
            },
            mouseenter: function() {
                var _this = $(this);

                $(this).last().append(
                "<a role=\"button\" class=\"pull-right btn-group-hover\">" +
                "<span class=\"glyphicon glyphicon-play\"></span></a>").find('a').click(function(e) {
                    e.stopPropagation();

                    $.getJSON( "https://api.dirble.com/v2/station/"+_this.attr("radioid")+"?token=" + dirble_api_token, function( data ) {

                        socket.send("MPD_API_ADD_PLAY_TRACK," + data.streams[0].stream);
                        $('.top-right').notify({
                            message:{
                                text: _this.text() + " added"
                            }
                        }).show();
                    });
                }).fadeTo('fast',1);
            },

            mouseleave: function(){
                $(this).last().find("a").stop().remove();
            }
        });

        $('#dirble_right> tbody > tr > td').on({
            click: function() {
                var _this = $(this);

                $.getJSON( "https://api.dirble.com/v2/station/"+$(this).attr("radioid")+"?token=" + dirble_api_token, function( data ) {

                    socket.send("MPD_API_ADD_TRACK," + data.streams[0].stream);
                    $('.top-right').notify({
                        message:{
                            text: _this.text() + " added"
                        }
                    }).show();
                });
            },
            mouseenter: function() {
                var _this = $(this);

                $(this).last().append(
                "<a role=\"button\" class=\"pull-right btn-group-hover\">" +
                "<span class=\"glyphicon glyphicon-play\"></span></a>").find('a').click(function(e) {
                    e.stopPropagation();

                    $.getJSON( "https://api.dirble.com/v2/station/"+_this.attr("radioid")+"?token=" + dirble_api_token, function( data ) {

                        socket.send("MPD_API_ADD_PLAY_TRACK," + data.streams[0].stream);
                        $('.top-right').notify({
                            message:{
                                text: _this.text() + " added"
                            }
                        }).show();
                    });
                }).fadeTo('fast',1);
            },

            mouseleave: function(){
                $(this).last().find("a").stop().remove();
            }
        });
    });
}

function set_filter (c) {
    filter = c;

    $.each($('#salamisandwich > tbody > tr.dir'), function(i, line) {
        var first = $(line).attr('uri')[0];

        if (filter === undefined) {
            $(line).removeClass('hide');
        }

        else if (filter === "#") {
            if (!isNaN(first)) {
                $(line).removeClass('hide');
            } else {
                $(line).addClass('hide');
            }
        }

        else if (filter >= "A" && filter <= "Z") {
            if (first.toUpperCase() === filter) {
                $(line).removeClass('hide');
            } else {
                $(line).addClass('hide');
            }
        }

        else if (filter === "||") {
            $(line).addClass('hide');
        }
    });

    $.each($('#salamisandwich > tbody > tr.plist'), function(i, line) {
        if (filter === undefined) {
            $(line).removeClass('hide');
        } else if (filter === "||") {
            $(line).removeClass('hide');
        } else {
            $(line).addClass('hide');
        }
    });
}

function add_filter () {
    $('#filter').append('&nbsp;<a onclick="set_filter(\'#\')" href="#/browse/0/">#</a>');

    for (i = 65; i <= 90; i++) {
        var c = String.fromCharCode(i);
        $('#filter').append('&nbsp;<a onclick="set_filter(\'' + c + '\')" href="#/browse/0/">' + c + '</a>');
    }

    $('#filter').append('&nbsp;<a onclick="set_filter(\'||\')" href="#/browse/0/" class="glyphicon glyphicon-list"></a>');
}