(function ($, OC) {
    'use strict';

    var gpxedit = {
        map: {},
        baseLayers: null,
        restoredTileLayer: null,
        drawControl: null,
        id: 0,
        // indexed by gpxedit_id
        layersData: {},
        currentAjax: null
    };

    var symbolSelectClasses = {
        'unknown': 'unknown-select',
        'marker': 'marker-select',
        'Dot, White': 'dot-select',
        'Pin, Blue': 'pin-blue-select',
        'Pin, Green': 'pin-green-select',
        'Pin, Red': 'pin-red-select',
        'Flag, Green': 'flag-green-select',
        'Flag, Red': 'flag-red-select',
        'Flag, Blue': 'flag-blue-select',
        'Block, Blue': 'block-blue-select',
        'Block, Green': 'block-green-select',
        'Block, Red': 'block-red-select',
        'Blue Diamond': 'diamond-blue-select',
        'Green Diamond': 'diamond-green-select',
        'Red Diamond': 'diamond-red-select',
        'Residence': 'residence-select',
        'Drinking Water': 'drinking-water-select',
        'Trail Head': 'hike-select',
        'Bike Trail': 'bike-trail-select',
        'Campground': 'campground-select',
        'Bar': 'bar-select',
        'Skull and Crossbones': 'skullcross-select',
        'Geocache': 'geocache-select',
        'Geocache Found': 'geocache-open-select',
        'Medical Facility': 'medical-select',
        'Contact, Alien': 'contact-alien-select',
        'Contact, Big Ears': 'contact-bigears-select',
        'Contact, Female3': 'contact-female3-select',
        'Contact, Cat': 'contact-cat-select',
        'Contact, Dog': 'contact-dog-select',
    };

    var symbolIcons = {
        'marker': L.divIcon({
                className: 'leaflet-marker-blue',
                iconAnchor: [12, 41]
        }),
        'Dot, White': L.divIcon({
                iconSize: L.point(7,7),
        }),
        'Pin, Blue': L.divIcon({
            className: 'pin-blue',
            iconAnchor: [5, 30]
        }),
        'Pin, Green': L.divIcon({
            className: 'pin-green',
            iconAnchor: [5, 30]
        }),
        'Pin, Red': L.divIcon({
            className: 'pin-red',
            iconAnchor: [5, 30]
        }),
        'Flag, Green': L.divIcon({
            className: 'flag-green',
            iconAnchor: [1, 25]
        }),
        'Flag, Red': L.divIcon({
            className: 'flag-red',
            iconAnchor: [1, 25]
        }),
        'Flag, Blue': L.divIcon({
            className: 'flag-blue',
            iconAnchor: [1, 25]
        }),
        'Block, Blue': L.divIcon({
            className: 'block-blue',
            iconAnchor: [8, 8]
        }),
        'Block, Green': L.divIcon({
            className: 'block-green',
            iconAnchor: [8, 8]
        }),
        'Block, Red': L.divIcon({
            className: 'block-red',
            iconAnchor: [8, 8]
        }),
        'Blue Diamond': L.divIcon({
            className: 'diamond-blue',
            iconAnchor: [9, 9]
        }),
        'Green Diamond': L.divIcon({
            className: 'diamond-green',
            iconAnchor: [9, 9]
        }),
        'Red Diamond': L.divIcon({
            className: 'diamond-red',
            iconAnchor: [9, 9]
        }),
        'Residence': L.divIcon({
            className: 'residence',
            iconAnchor: [12, 12]
        }),
        'Drinking Water': L.divIcon({
            className: 'drinking-water',
            iconAnchor: [12, 12]
        }),
        'Trail Head': L.divIcon({
            className: 'hike',
            iconAnchor: [12, 12]
        }),
        'Bike Trail': L.divIcon({
            className: 'bike-trail',
            iconAnchor: [12, 12]
        }),
        'Campground': L.divIcon({
            className: 'campground',
            iconAnchor: [12, 12]
        }),
        'Bar': L.divIcon({
            className: 'bar',
            iconAnchor: [10, 12]
        }),
        'Skull and Crossbones': L.divIcon({
            className: 'skullcross',
            iconAnchor: [12, 12]
        }),
        'Geocache': L.divIcon({
            className: 'geocache',
            iconAnchor: [11, 10]
        }),
        'Geocache Found': L.divIcon({
            className: 'geocache-open',
            iconAnchor: [11, 10]
        }),
        'Medical Facility': L.divIcon({
            className: 'medical',
            iconAnchor: [13, 11]
        }),
        'Contact, Alien': L.divIcon({
            className: 'contact-alien',
            iconAnchor: [12, 12]
        }),
        'Contact, Big Ears': L.divIcon({
            className: 'contact-bigears',
            iconAnchor: [12, 12]
        }),
        'Contact, Female3': L.divIcon({
            className: 'contact-female3',
            iconAnchor: [12, 12]
        }),
        'Contact, Cat': L.divIcon({
            className: 'contact-cat',
            iconAnchor: [12, 12]
        }),
        'Contact, Dog': L.divIcon({
            className: 'contact-dog',
            iconAnchor: [12, 12]
        }),
    };

    var hoverStyle = {
        weight: 10,
        opacity: 0.7,
        color: 'black'
    };
    var defaultStyle = {
        opacity: 0.9,
        color: '#1196DA',
        weight: 7
    };

    function endsWith(str, suffix) {
        return str.indexOf(suffix, str.length - suffix.length) !== -1;
    }

	function escapeHtml(text) {
		const map = {
			'&': '&',
			'<': '&lt;',
			'>': '&gt;',
			'"': '&quot;',
			"'": '&#039;',
		}
		return text.replace(/[&<>"']/g, (m) => { return map[m] })
	}

    function load_map() {
        // change meta to send referrer
        // usefull for IGN tiles authentication !
        $('meta[name=referrer]').attr('content', 'origin');

        var layer = getUrlParameter('layer');
        var default_layer = 'OpenStreetMap';
        if (gpxedit.restoredTileLayer !== null) {
            default_layer = gpxedit.restoredTileLayer;
        }
        else if (typeof layer !== 'undefined') {
            default_layer = decodeURIComponent(layer);
        }

        var osmfr2 = new L.TileLayer('https://{s}.tile.openstreetmap.fr/osmfr/{z}/{x}/{y}.png', {
            minZoom: 0,
            maxZoom: 13,
            attribution: 'Map data &copy; 2013 <a href="http://openstreetmap.org">OpenStreetMap</a> contributors'
        });

        var baseLayers = {};

        // add base layers
        $('#basetileservers li[type=tile]').each(function() {
            var sname = $(this).attr('name');
            var surl = $(this).attr('url');
            var minz = parseInt($(this).attr('minzoom'));
            var maxz = parseInt($(this).attr('maxzoom'));
            var sattrib = $(this).attr('attribution');
            var stransparent = ($(this).attr('transparent') === 'true');
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 1;
            }
            baseLayers[sname] = new L.TileLayer(surl, {minZoom: minz, maxZoom: maxz, attribution: sattrib, opacity: sopacity, transparent: stransparent});
        });
        $('#basetileservers li[type=tilewms]').each(function() {
            var sname = $(this).attr('name');
            var surl = $(this).attr('url');
            var slayers = $(this).attr('layers') || '';
            var sversion = $(this).attr('version') || '1.1.1';
            var stransparent = ($(this).attr('transparent') === 'true');
            var sformat = $(this).attr('format') || 'image/png';
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 1;
            }
            var sattrib = $(this).attr('attribution') || '';
            baseLayers[sname] = new L.tileLayer.wms(surl, {layers: slayers, version: sversion, transparent: stransparent, opacity: sopacity, format: sformat, attribution: sattrib});
        });
        // add custom layers
        $('#tileserverlist li').each(function() {
            var sname = $(this).attr('servername');
            var surl = $(this).attr('url');
            var sminzoom = $(this).attr('minzoom') || '1';
            var smaxzoom = $(this).attr('maxzoom') || '20';
            var sattrib = $(this).attr('attribution') || '';
            baseLayers[sname] = new L.TileLayer(surl,
                    {minZoom: sminzoom, maxZoom: smaxzoom, attribution: sattrib});
        });
        $('#tilewmsserverlist li').each(function() {
            var sname = $(this).attr('servername');
            var surl = $(this).attr('url');
            var sminzoom = $(this).attr('minzoom') || '1';
            var smaxzoom = $(this).attr('maxzoom') || '20';
            var slayers = $(this).attr('layers') || '';
            var sversion = $(this).attr('version') || '1.1.1';
            var sformat = $(this).attr('format') || 'image/png';
            var sattrib = $(this).attr('attribution') || '';
            baseLayers[sname] = new L.tileLayer.wms(surl,
                    {format: sformat, version: sversion, layers: slayers, minZoom: sminzoom, maxZoom: smaxzoom, attribution: sattrib});
        });
        gpxedit.baseLayers = baseLayers;

        var baseOverlays = {};

        // add base overlays
        $('#basetileservers li[type=overlay]').each(function() {
            var sname = $(this).attr('name');
            var surl = $(this).attr('url');
            var minz = parseInt($(this).attr('minzoom'));
            var maxz = parseInt($(this).attr('maxzoom'));
            var sattrib = $(this).attr('attribution');
            var stransparent = ($(this).attr('transparent') === 'true');
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 0.4;
            }
            baseOverlays[sname] = new L.TileLayer(surl, {minZoom: minz, maxZoom: maxz, attribution: sattrib, opacity: sopacity, transparent: stransparent});
        });
        $('#basetileservers li[type=overlaywms]').each(function() {
            var sname = $(this).attr('name');
            var surl = $(this).attr('url');
            var slayers = $(this).attr('layers') || '';
            var sversion = $(this).attr('version') || '1.1.1';
            var stransparent = ($(this).attr('transparent') === 'true');
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 0.4;
            }
            var sformat = $(this).attr('format') || 'image/png';
            var sattrib = $(this).attr('attribution') || '';
            baseOverlays[sname] = new L.tileLayer.wms(surl, {layers: slayers, version: sversion, transparent: stransparent, opacity: sopacity, format: sformat, attribution: sattrib});
        });
        // add custom overlays
        $('#overlayserverlist li').each(function() {
            var sname = $(this).attr('servername');
            var surl = $(this).attr('url');
            var sminzoom = $(this).attr('minzoom') || '1';
            var smaxzoom = $(this).attr('maxzoom') || '20';
            var stransparent = ($(this).attr('transparent') === 'true');
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 0.4;
            }
            var sattrib = $(this).attr('attribution') || '';
            baseOverlays[sname] = new L.TileLayer(surl,
                    {minZoom: sminzoom, maxZoom: smaxzoom, transparent: stransparent, opcacity: sopacity, attribution: sattrib});
        });
        $('#overlaywmsserverlist li').each(function() {
            var sname = $(this).attr('servername');
            var surl = $(this).attr('url');
            var sminzoom = $(this).attr('minzoom') || '1';
            var smaxzoom = $(this).attr('maxzoom') || '20';
            var slayers = $(this).attr('layers') || '';
            var sversion = $(this).attr('version') || '1.1.1';
            var sformat = $(this).attr('format') || 'image/png';
            var stransparent = ($(this).attr('transparent') === 'true');
            var sopacity = $(this).attr('opacity');
            if (typeof sopacity !== typeof undefined && sopacity !== false && sopacity !== '') {
                sopacity = parseFloat(sopacity);
            }
            else {
                sopacity = 0.4;
            }
            var sattrib = $(this).attr('attribution') || '';
            baseOverlays[sname] = new L.tileLayer.wms(surl, {layers: slayers, version: sversion, transparent: stransparent, opacity: sopacity, format: sformat, attribution: sattrib, minZoom: sminzoom, maxZoom: smaxzoom});
        });
        gpxedit.overlayLayers = baseOverlays;

        gpxedit.map = new L.Map('map', {
            zoomControl: true,
        });

        L.control.scale({metric: true, imperial: true, position: 'topleft'})
        .addTo(gpxedit.map);

        L.control.mousePosition().addTo(gpxedit.map);
        gpxedit.searchControl = L.Control.geocoder({position: 'topleft'});
        gpxedit.searchControl.addTo(gpxedit.map);
        gpxedit.locateControl = L.control.locate({follow: true});
        gpxedit.locateControl.addTo(gpxedit.map);
        gpxedit.map.addControl(new L.Control.LinearMeasurement({
            unitSystem: 'metric',
            color: '#FF0080',
            type: 'line'
        }));
        L.control.sidebar('sidebar').addTo(gpxedit.map);

        gpxedit.map.setView(new L.LatLng(27, 5), 3);

        if (! baseLayers.hasOwnProperty(default_layer)) {
            default_layer = 'OpenStreetMap';
        }
        gpxedit.map.addLayer(baseLayers[default_layer]);

        gpxedit.activeLayers = L.control.activeLayers(baseLayers, baseOverlays);
        gpxedit.activeLayers.addTo(gpxedit.map);

        gpxedit.minimapControl = new L.Control.MiniMap(
                osmfr2,
                { toggleDisplay: true, position: 'bottomright' }
        ).addTo(gpxedit.map);
        gpxedit.minimapControl._toggleDisplayButtonClicked();

        //gpxedit.editableLayers = new L.FeatureGroup();
        //gpxedit.map.addLayer(gpxedit.editableLayers);

        var metric, feet, nautic;
        var unit = $('#unitselect').val();
        metric = (unit === 'metric') ? true : false;
        feet = (unit === 'feet') ? true : false;
        nautic = (unit === 'nautic') ? true : false;

        var options = {
            position: 'bottomleft',
            draw: {
                polyline: {metric: metric, feet: feet, nautic: nautic},
                polygon: false,
                circle: false,
                rectangle: false,
                marker: {
                    icon: symbolIcons.marker
                }
            },
            edit: {
                edit: true,
                remove: true,
                //featureGroup: gpxedit.editableLayers,
            },
            entry: 'edit-json'
        };

        L.drawLocal.draw.toolbar.buttons.polyline = t('gpxedit', 'Draw a track');
        L.drawLocal.draw.toolbar.buttons.marker = t('gpxedit', 'Add a waypoint');
        L.drawLocal.edit.toolbar.buttons.edit = t('gpxedit', 'Edit');
        L.drawLocal.edit.toolbar.buttons.editDisabled = t('gpxedit', 'Nothing to edit');
        L.drawLocal.edit.toolbar.buttons.remove = t('gpxedit', 'Delete');
        L.drawLocal.edit.toolbar.buttons.removeDisabled = t('gpxedit', 'Nothing to delete');
        L.drawLocal.edit.toolbar.actions.save.title = t('gpxedit', 'Validate changes');
        L.drawLocal.edit.toolbar.actions.save.text = t('gpxedit', 'Ok');
        L.drawLocal.edit.toolbar.actions.cancel.title = t('gpxedit', 'Discard all changes');
        L.drawLocal.edit.toolbar.actions.cancel.text = t('gpxedit', 'Cancel');
        L.drawLocal.edit.handlers.edit.tooltip.text = t('gpxedit', 'Drag to move elements,<br/>click to remove a point<br/>hover a middle marker and press "Del" to cut the line');
        L.drawLocal.edit.handlers.edit.tooltip.subtext = t('gpxedit', 'Click cancel to undo changes');
        L.drawLocal.edit.handlers.remove.tooltip.text = t('gpxedit', 'Click on an element to delete it');
        L.drawLocal.draw.handlers.marker.tooltip.start = t('gpxedit', 'Click map to add waypoint');
        L.drawLocal.draw.handlers.polyline.tooltip.start = t('gpxedit', 'Click to start drawing track');
        L.drawLocal.draw.handlers.polyline.tooltip.cont = t('gpxedit', 'Click to continue drawing track');
        L.drawLocal.draw.handlers.polyline.tooltip.end = t('gpxedit', 'Click last point to finish track');
        L.drawLocal.draw.toolbar.actions.text = t('gpxedit', 'Cancel');
        L.drawLocal.draw.toolbar.actions.title = t('gpxedit', 'Cancel drawing');
        L.drawLocal.draw.toolbar.finish.text = t('gpxedit', 'Finish');
        L.drawLocal.draw.toolbar.finish.title = t('gpxedit', 'Finish drawing');
        L.drawLocal.draw.toolbar.undo.text = t('gpxedit', 'Delete last point');
        L.drawLocal.draw.toolbar.undo.title = t('gpxedit', 'Delete last drawn point');
        var drawControl = new L.Control.Draw.Plus(options);
        gpxedit.drawControl = drawControl;
        gpxedit.map.addControl(drawControl);

        // when something is created, we generate popup content
        // and initialize layer data
        gpxedit.map.on(L.Draw.Event.CREATED, function (e) {
            onCreated(e.layerType, e.layer);
        });
        // not used for the moment
        gpxedit.map.on('draw:edited', function (e) {
            var layers = e.layers;
            layers.eachLayer(function (layer) {
            });
        });
        // remove data associated with the deleted layer
        gpxedit.map.on('draw:deleted', function (e) {
            var layers = e.layers;
            layers.eachLayer(function (layer) {
                delete gpxedit.layersData[layer.gpxedit_id];
            });
        });

        // load data into popup when it opens
        // this is needed because popup content is created each time we open one
        // so, the content is lost when it's closed
        gpxedit.map.on('popupopen', function(e) {
            var id = e.popup._source.gpxedit_id;
            if (id !== undefined && gpxedit.layersData.hasOwnProperty(id)) {
                //var id = parseInt(e.popup.getContent().match(/layerid="(\d+)"/)[1]);
                var buttonParent = $('button.popupOkButton[layerid=' + id + ']').parent();
                buttonParent.find('input.layerName').val(gpxedit.layersData[id].name);
                buttonParent.find('textarea.layerDesc').val(gpxedit.layersData[id].description);
                buttonParent.find('textarea.layerCmt').val(gpxedit.layersData[id].comment);
                buttonParent.find('input.layerLinkText').val(gpxedit.layersData[id].linkText);
                buttonParent.find('input.layerLinkUrl').val(gpxedit.layersData[id].linkUrl);
                if (gpxedit.layersData[id].layer.type === 'marker') {
                    if (symbolIcons.hasOwnProperty(gpxedit.layersData[id].symbol)) {
                        buttonParent.find('select[role=symbol]').val(gpxedit.layersData[id].symbol);
                    }
                    else if(gpxedit.layersData[id].symbol === '') {
                        buttonParent.find('select[role=symbol]').val('');
                    }
                    else{
                        buttonParent.find('select[role=symbol]').val('unknown');
                    }
                    buttonParent.find('select[role=symbol]').change();
                    var latlng = gpxedit.layersData[id].layer.getLatLng();
                    buttonParent.find('input.layerLat').val(latlng.lat.toFixed(6));
                    buttonParent.find('input.layerLon').val(latlng.lng.toFixed(6));
                }
            }
        });

        gpxedit.map.on('baselayerchange',saveOptions);

    }

    // called when something is drawn by hand or when a gpx is loaded
    // it generates the popup content and initializes the layer's data
    // it returns the layer in case we want to set the layer's data manually (when loading a gpx)
    function onCreated(type, layer) {
        var tst = $('#tooltipstyleselect').val();
        var popupTitle;
        var layerType;
        if (type === 'polyline' || type === 'track') {
            popupTitle = t('gpxedit', 'Track');
            layerType = 'track';
            layer.setStyle(defaultStyle);
        }
        else if (type === 'route') {
            popupTitle = t('gpxedit', 'Route');
            layerType = 'route';
            layer.setStyle(defaultStyle);
        }
        else if (type === 'marker') {
            popupTitle = t('gpxedit', 'Waypoint');
            layerType = 'marker';
        }

        var popupTxt = '<h2 class="popupTitle">' + popupTitle + '</h2><table class="popupdatatable">' +
            '<tr><td>' + t('gpxedit', 'Name') + '</td><td><input class="layerName"></input></td></tr>' +
            '<tr><td>' + t('gpxedit', 'Description') + '</td><td><textarea class="layerDesc"></textarea></td></tr>' +
            '<tr><td>' + t('gpxedit', 'Comment') + '</td><td><textarea class="layerCmt"></textarea></td></tr>';
        popupTxt = popupTxt + '<tr><td>' + t('gpxedit', 'Link text') +
                   '</td><td><input class="layerLinkText"></input></td></tr>';
        popupTxt = popupTxt + '<tr><td>' + t('gpxedit', 'Link URL') +
                   '</td><td><input class="layerLinkUrl"></input></td></tr>';
        if (type === 'marker') {
            popupTxt = popupTxt + '<tr><td>' + t('gpxedit', 'Lat') +
                       '</td><td><input class="layerLat"></input></td></tr>';
            popupTxt = popupTxt + '<tr><td>' + t('gpxedit', 'Lon') +
                       '</td><td><input class="layerLon"></input></td></tr>';
            popupTxt = popupTxt + '<tr><td>' + t('gpxedit', 'Symbol') +
                       '</td><td><select role="symbol">';
            popupTxt = popupTxt + '<option value="">' +
                       t('gpxedit', 'No symbol') + '</option>';
            popupTxt = popupTxt + '<option value="unknown">' +
                       t('gpxedit', 'Unknown symbol') + '</option>';
            for (var cl in symbolIcons) {
                if (cl !== 'marker') {
                    popupTxt = popupTxt + '<option value="' + cl + '">' +
                               cl + '</option>';
                }
            }
            popupTxt = popupTxt + '</select></td></tr>';
        }
        popupTxt = popupTxt + '</table>';
        popupTxt = popupTxt + '<button class="popupOkButton" layerid="' +
                   gpxedit.id + '">OK</button>';

        layer.bindPopup(popupTxt);
        if (type !== 'marker') {
            layer.on('mouseover', function() {
                layer.bringToFront();
                layer.setStyle(hoverStyle);
            });
            layer.on('mouseout', function() {
                layer.setStyle(defaultStyle);
            });
        }

        // get properties of the splited line
        if (layer.hasOwnProperty('gpxedit_id')) {
            gpxedit.layersData[gpxedit.id] = {
                name: gpxedit.layersData[layer.gpxedit_id].name,
                description: gpxedit.layersData[layer.gpxedit_id].description,
                comment: gpxedit.layersData[layer.gpxedit_id].comment,
                linkUrl: gpxedit.layersData[layer.gpxedit_id].linkUrl,
                linkText: gpxedit.layersData[layer.gpxedit_id].linkText,
                symbol: gpxedit.layersData[layer.gpxedit_id].symbol,
                time: gpxedit.layersData[layer.gpxedit_id].time,
                layer: layer
            };
            if (gpxedit.layersData[layer.gpxedit_id].name !== '') {
                if (tst === 'p') {
                    layer.bindTooltip(
                        gpxedit.layersData[layer.gpxedit_id].name,
                        {permanent: true}
                    );
                }
                else{
                    layer.bindTooltip(
                        gpxedit.layersData[layer.gpxedit_id].name,
                        {sticky: true}
                    );
                }
            }
        }
        else {
            gpxedit.layersData[gpxedit.id] = {
                name: '',
                description: '',
                comment: '',
                linkUrl: '',
                linkText: '',
                symbol: '',
                time: '',
                layer: layer
            };
        }
        layer.gpxedit_id = gpxedit.id;
        layer.type = layerType;
        gpxedit.drawControl.editLayers.addLayer(layer);
        gpxedit.id++;
        return layer;
    }

    function getUrlParameter(sParam)
    {
        var sPageURL = window.location.search.substring(1);
        var sURLVariables = sPageURL.split('&');
        for (var i = 0; i < sURLVariables.length; i++) {
            var sParameterName = sURLVariables[i].split('=');
            if (sParameterName[0] === sParam) {
                return decodeURIComponent(sParameterName[1]);
            }
        }
    }

    // generate gpx text from current map elements
    function generateGpx() {
        var lat, lng, alt, time, i, ia;
        var gpxText = '<?xml version="1.0" encoding="UTF-8" standalone="no" ?>\n';
        var now = new Date();
        var now_utc_str = now.getUTCFullYear() + '-' +
                          ("0" + now.getUTCMonth()).slice(-2) + '-' +
                          ("0" + now.getUTCDate()).slice(-2) + 'T' +
                          ("0" + now.getUTCHours()).slice(-2) + ':' +
                          ("0" + now.getUTCMinutes()).slice(-2) + ':' +
                          ("0" + now.getUTCSeconds()).slice(-2) + 'Z';
        gpxText = gpxText + '<gpx xmlns="http://www.topografix.com/GPX/1/1"' +
           ' xmlns:gpxx="http://www.garmin.com/xmlschemas/GpxExtensions/v3"' +
           ' xmlns:wptx1="http://www.garmin.com/xmlschemas/WaypointExtension/v1"' +
           ' xmlns:gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1"' +
           ' creator="GpxEdit Owncloud/Nextcloud app ' +
           $('#versionnumber').text().replace(/\s+/g,'') + '" version="1.1"' +
           ' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"' +
           ' xsi:schemaLocation="http://www.topografix.com/GPX/1/1' +
           ' http://www.topografix.com/GPX/1/1/gpx.xsd' +
           ' http://www.garmin.com/xmlschemas/GpxExtensions/v3' +
           ' http://www8.garmin.com/xmlschemas/GpxExtensionsv3.xsd' +
           ' http://www.garmin.com/xmlschemas/WaypointExtension/v1' +
           ' http://www8.garmin.com/xmlschemas/WaypointExtensionv1.xsd' +
           ' http://www.garmin.com/xmlschemas/TrackPointExtension/v1' +
           ' http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd">\n';
        gpxText = gpxText + '<metadata>\n <time>' + now_utc_str + '</time>\n';
        var trackName = $('#tracknameinput').val();
        if (trackName) {
            gpxText = gpxText + ' <name>' + escapeHtml(trackName) + '</name>\n';
        }
        var fileDesc = $('#desctext').val();
        if (fileDesc) {
            gpxText = gpxText + ' <desc>' + escapeHtml(fileDesc) + '</desc>\n';
        }
        var linkurl = $('#linkurlinput').val();
        if (linkurl) {
            gpxText = gpxText + ' <link href="' + linkurl + '">\n';

            var linktext = $('#linktextinput').val();
            if (linktext) {
                gpxText = gpxText + '  <text>' + escapeHtml(linktext) + '</text>\n';
            }
            gpxText = gpxText + ' </link>\n';
        }
        gpxText = gpxText + '</metadata>\n';

        var layerArray = [];
        gpxedit.drawControl.editLayers.eachLayer(function(layer) {
            layerArray.push(layer);
        });
        // sort
        var sortedLayerArray = layerArray.sort(function (layer1, layer2) {
            var res;
            var id1 = layer1.gpxedit_id;
            var id2 = layer2.gpxedit_id;
            var name1 = gpxedit.layersData[id1].name;
            var name2 = gpxedit.layersData[id2].name;
            var numname1 = parseInt(name1);
            var numname2 = parseInt(name2);

            // special cases : at least one of them does not begin by a number
            // number is always inferior than string
            if (isNaN(numname1) && !isNaN(numname2)) {
                res = 1;
            }
            else if (!isNaN(numname1) && isNaN(numname2)) {
                res = -1;
            }
            // if both are not begining with a number : compare strings
            else if (isNaN(numname1) && isNaN(numname2)) {
                if (name1 < name2) {
                    res = -1;
                }
                else if (name1 === name2) {
                    res = 0;
                }
                else {
                    res = 1;
                }
            }
            // normal case : both begin with a number
            else{
                if (numname1 < numname2) {
                    res = -1;
                }
                // if numbers are identical : compare strings
                else if(numname1 === numname2) {
                    if (name1 < name2) {
                        res = -1;
                    }
                    else if (name1 === name2) {
                        res = 0;
                    }
                    else {
                        res = 1;
                    }
                }
                else{
                    res = 1;
                }
            }
            return res;
        });

        for (ia = 0; ia < sortedLayerArray.length; ia++){
            var layer = sortedLayerArray[ia];
            var id = layer.gpxedit_id;
            var name = gpxedit.layersData[id].name;
            var comment = gpxedit.layersData[id].comment;
            var linkText = gpxedit.layersData[id].linkText;
            var linkUrl = gpxedit.layersData[id].linkUrl;
            var description = gpxedit.layersData[id].description;
            var time = gpxedit.layersData[id].time;
            if (layer.type === 'marker') {
                var symbol = gpxedit.layersData[id].symbol;
                lat = layer._latlng.lat;
                lng = layer._latlng.lng;
                alt = layer._latlng.alt;
                gpxText = gpxText + ' <wpt lat="' + lat + '" lon="' + lng + '">\n';
                if (name) {
                    gpxText = gpxText + '  <name>' + escapeHtml(name) + '</name>\n';
                }
                else{
                    gpxText = gpxText + '  <name></name>\n';
                }
                if (alt !== undefined) {
                    gpxText = gpxText + '  <ele>' + alt + '</ele>\n';
                }
                if (linkText && linkUrl) {
                    gpxText = gpxText + '  <link href="' + escapeHtml(linkUrl) + '"><text>' + escapeHtml(linkText) + '</text></link>\n';
                }
                if (comment) {
                    gpxText = gpxText + '  <cmt>' + escapeHtml(comment) + '</cmt>\n';
                }
                if (symbol) {
                    gpxText = gpxText + '  <sym>' + symbol + '</sym>\n';
                }
                if (description) {
                    gpxText = gpxText + '  <desc>' + escapeHtml(description) + '</desc>\n';
                }
                if (time) {
                    gpxText = gpxText + '  <time>' + time + '</time>\n';
                }
                gpxText = gpxText + ' </wpt>\n';
            }
            else if(!layer.type || layer.type === 'track') {
                gpxText = gpxText + ' <trk>\n';
                if (name) {
                    gpxText = gpxText + '  <name>' + escapeHtml(name) + '</name>\n';
                }
                else{
                    gpxText = gpxText + '  <name></name>\n';
                }
                if (comment) {
                    gpxText = gpxText + '  <cmt>' + escapeHtml(comment) + '</cmt>\n';
                }
                if (linkText && linkUrl) {
                    gpxText = gpxText + '  <link href="' + escapeHtml(linkUrl) + '"><text>' + escapeHtml(linkText) + '</text></link>\n';
                }
                if (description) {
                    gpxText = gpxText + '  <desc>' + escapeHtml(description) + '</desc>\n';
                }
                gpxText = gpxText + '  <trkseg>\n';
                for (i = 0; i < layer._latlngs.length; i++) {
                    lat = layer._latlngs[i].lat;
                    lng = layer._latlngs[i].lng;
                    alt = layer._latlngs[i].alt;
                    time = layer._latlngs[i].time;
                    gpxText = gpxText + '   <trkpt lat="' + lat + '" lon="' + lng + '">\n';
                    if (time) {
                        gpxText = gpxText + '    <time>' + time + '</time>\n';
                    }
                    if (alt !== undefined) {
                        gpxText = gpxText + '    <ele>' + alt + '</ele>\n';
                    }
                    gpxText = gpxText + '   </trkpt>\n';
                }
                gpxText = gpxText + '  </trkseg>\n </trk>\n';
            }
            else if(layer.type === 'route') {
                gpxText = gpxText + ' <rte>\n';
                if (name) {
                    gpxText = gpxText + '  <name>' + escapeHtml(name) + '</name>\n';
                }
                else{
                    gpxText = gpxText + '  <name></name>\n';
                }
                if (comment) {
                    gpxText = gpxText + '  <cmt>' + escapeHtml(comment) + '</cmt>\n';
                }
                if (linkText && linkUrl) {
                    gpxText = gpxText + '  <link href="' + escapeHtml(linkUrl) + '"><text>' + escapeHtml(linkText) + '</text></link>\n';
                }
                if (description) {
                    gpxText = gpxText + '  <desc>' + escapeHtml(description) + '</desc>\n';
                }
                for (i = 0; i < layer._latlngs.length; i++) {
                    lat = layer._latlngs[i].lat;
                    lng = layer._latlngs[i].lng;
                    alt = layer._latlngs[i].alt;
                    time = layer._latlngs[i].time;
                    gpxText = gpxText + '  <rtept lat="' + lat + '" lon="' + lng + '">\n';
                    if (time !== undefined) {
                        gpxText = gpxText + '   <time>' + time + '</time>\n';
                    }
                    if (alt !== undefined) {
                        gpxText = gpxText + '   <ele>' + alt + '</ele>\n';
                    }
                    gpxText = gpxText + '  </rtept>\n';
                }
                gpxText = gpxText + ' </rte>\n';
            }
        }
        gpxText = gpxText + ' <extensions/>\n</gpx>';
        return gpxText;
    }

    // adds a marker and initialize its data
    function drawMarker(latlng, name, desc, cmt, sym, time, linkText, linkUrl) {
        var wst = $('#markerstyleselect').val();
        var tst = $('#tooltipstyleselect').val();
        var symboo = $('#symboloverwrite').is(':checked');
        var m = L.marker(latlng);
        if (symboo && sym !== '' && symbolIcons.hasOwnProperty(sym)) {
            m.setIcon(symbolIcons[sym]);
        }
        else if(symboo && sym !== '') {
            m.setIcon(L.divIcon({
                className: 'unknown',
                iconAnchor: [12, 12]
            }));
        }
        else{
            m.setIcon(symbolIcons[wst]);
        }
        var layer = onCreated('marker', m);
        if (name !== '') {
            if (tst === 'p') {
                m.bindTooltip(name, {permanent: true});
            }
            else{
                m.bindTooltip(name, {sticky: true});
            }
        }
        gpxedit.layersData[layer.gpxedit_id].name = name;
        gpxedit.layersData[layer.gpxedit_id].comment = cmt;
        gpxedit.layersData[layer.gpxedit_id].linkText = linkText;
        gpxedit.layersData[layer.gpxedit_id].linkUrl = linkUrl;
        gpxedit.layersData[layer.gpxedit_id].description = desc;
        gpxedit.layersData[layer.gpxedit_id].symbol = sym;
        gpxedit.layersData[layer.gpxedit_id].time = time;
    }

    // adds a polyline and initialize its data
    function drawLine(latlngs, name, desc, cmt, gpxtype, times, linkText, linkUrl) {
        var wst = $('#markerstyleselect').val();
        var tst = $('#tooltipstyleselect').val();
        var p = L.polyline(latlngs);
        if (times.length === p._latlngs.length) {
            for (var i=0; i<times.length; i++) {
                if (times[i]) {
                    p._latlngs[i].time = times[i];
                }
            }
        }
        var layer = onCreated(gpxtype, p);
        if (name !== '') {
            if (tst === 'p') {
                p.bindTooltip(name, {permanent: true});
            }
            else{
                p.bindTooltip(name, {sticky: true});
            }
        }
        gpxedit.layersData[layer.gpxedit_id].name = name;
        gpxedit.layersData[layer.gpxedit_id].comment = cmt;
        gpxedit.layersData[layer.gpxedit_id].linkText = linkText;
        gpxedit.layersData[layer.gpxedit_id].linkUrl = linkUrl;
        gpxedit.layersData[layer.gpxedit_id].description = desc;
    }

    // parse gpx xml text to draw it on the map
    function parseGpx(xml) {
        var parseddom = $.parseXML(xml);
        var dom = $(parseddom);

        var trackName = dom.find('gpx>metadata>name').text();
        $('#tracknameinput').val(trackName);
        var fileDesc = dom.find('gpx>metadata>desc').text();
        $('#desctext').val(fileDesc);
        var linktext = dom.find('gpx>metadata>link>text').html();
        $('#linktextinput').val(linktext);
        var linkurl = dom.find('gpx>metadata>link').attr('href');
        $('#linkurlinput').val(linkurl);

        dom.find('wpt').each(function() {
            var lat = $(this).attr('lat');
            var lon = $(this).attr('lon');
            var name = $(this).find('name').text();
            var cmt = $(this).find('cmt').text();
            var desc = $(this).find('desc').text();
            var sym = $(this).find('sym').text();
            var ele = $(this).find('ele').text();
            var time = $(this).find('time').text();
            var linkUrl = $(this).find('link').attr('href');
            var linkText = $(this).find('link text').text();
            if (ele !== '') {
                drawMarker([lat, lon, ele], name, desc, cmt, sym, time, linkText, linkUrl);
            }
            else{
                drawMarker([lat, lon], name, desc, cmt, sym, time, linkText, linkUrl);
            }
        });
        dom.find('trk').each(function() {
            var latlngs = [];
            var name = $(this).find('>name').text();
            var cmt = $(this).find('>cmt').text();
            var desc = $(this).find('>desc').text();
            var linkUrl = $(this).find('link').attr('href');
            var linkText = $(this).find('link text').text();
            var times = [];
            $(this).find('trkseg').each(function() {
                $(this).find('trkpt').each(function() {
                    var lat = $(this).attr('lat');
                    var lon = $(this).attr('lon');
                    var ele = $(this).find('ele').text();
                    var time = $(this).find('time').text();
                    times.push(time);
                    if (ele !== '') {
                        latlngs.push([lat, lon, ele]);
                    }
                    else{
                        latlngs.push([lat, lon]);
                    }
                });
            });
            drawLine(latlngs, name, desc, cmt, 'track', times, linkText, linkUrl);
        });
        dom.find('rte').each(function() {
            var latlngs = [];
            var name = $(this).find('>name').text();
            var cmt = $(this).find('>cmt').text();
            var desc = $(this).find('>desc').text();
            var linkUrl = $(this).find('link').attr('href');
            var linkText = $(this).find('link text').text();
            var times = [];
            $(this).find('rtept').each(function() {
                var lat = $(this).attr('lat');
                var lon = $(this).attr('lon');
                var ele = $(this).find('ele').text();
                var time = $(this).find('time').text();
                times.push(time);
                if (ele !== '') {
                    latlngs.push([lat, lon, ele]);
                }
                else{
                    latlngs.push([lat, lon]);
                }
            });
            drawLine(latlngs, name, desc, cmt, 'route', times, linkText, linkUrl);
        });
    }

    // remove layers from map and delete all layers data
    function clear() {
        var i;
        var layersToRemove = [];
        gpxedit.drawControl.editLayers.eachLayer(function (layer) {
              layer.unbindTooltip();
              delete gpxedit.layersData[layer.gpxedit_id];
              layersToRemove.push(layer);
        });

        for(i = 0; i < layersToRemove.length; i++) {
            gpxedit.drawControl.editLayers.removeLayer(layersToRemove[i]);
        }
    }

    /*
     * get key events
     */
    function checkKey(e) {
        e = e || window.event;
        var kc = e.keyCode;
        //console.log(kc);
        //console.log(e.key);

        if (kc === 161 || kc === 223) {
            e.preventDefault();
            gpxedit.minimapControl._toggleDisplayButtonClicked();
        }
        if (kc === 60 || kc === 220) {
            e.preventDefault();
            $('#sidebar').toggleClass('collapsed');
        }
        if (e.key === 'Delete') {
            if (gpxedit.hovermiddlemarker) {
                gpxedit.hovermiddlemarker.fire('cut', gpxedit.hovermiddlemarker);
            }
        }
    }

    function showSaveFailAnimation(path, message) {
        $('#failed').find('b#content').html(
            t('gpxedit', 'Failed to save file') + ' ' + path + '<br/>' + message
        );
        $('#failed').fadeIn();
        setTimeout(hideFailedAnimation, 4000);
    }

    function showFailAnimation(message) {
        $('#failed').find('b#content').html(message);
        $('#failed').fadeIn();
        setTimeout(hideFailedAnimation, 4000);
    }

    function hideFailedAnimation() {
        $('#failed').fadeOut();
    }

    function showSaveSuccessAnimation(path) {
        $('#saved').find('b#content').html(
            t('gpxedit', 'File successfully saved as') + '<br/>' + path
        );
        $('#saved').fadeIn();
        setTimeout(hideSaveSuccessAnimation, 4000);
    }

    function hideSaveSuccessAnimation() {
        $('#saved').fadeOut();
    }

    function showLoadingAnimation() {
        $('#loading').show();
    }

    function hideLoadingAnimation() {
        $('#loading').hide();
    }

    function showExportingAnimation() {
        $('#exporting').show();
    }

    function hideExportingAnimation() {
        $('#exporting').hide();
    }

    function showSavingAnimation() {
        $('#saving').show();
    }

    function hideSavingAnimation() {
        $('#saving').hide();
    }

    function loadFolderAction(folder) {
        loadFolder(folder);
        // set save name
        var spl = folder.split('/');
        var basename = spl[spl.length - 1];
        $('input#saveName').val(basename);
    }

    function loadFolder(folder) {
        var type = $('select#loadtypeselect').val();
        var req = {
            path: folder,
            type: type
        };
        var url = OC.generateUrl('/apps/gpxedit/getfoldergpxs');
        $('#loadingpc').text('0');
        showLoadingAnimation();
        gpxedit.currentAjax = $.ajax({
            type: 'POST',
            async: true,
            url: url,
            data: req,
            xhr: function() {
                var xhr = new window.XMLHttpRequest();
                xhr.addEventListener('progress', function(evt) {
                    if (evt.lengthComputable) {
                        var percentComplete = evt.loaded / evt.total * 100;
                        $('#loadingpc').text(parseInt(percentComplete));
                    }
                }, false);

                return xhr;
            }
        }).done(function (response) {
            var i;
            if ($('#clearbeforeload').is(':checked')) {
                clear();
            }
            if (response.gpxs.length === 0) {
                OC.dialogs.alert('The folder does not exist or does not contain any compatible file',
                                 'Load folder error');
            }
            else {
                for (i = 0; i < response.gpxs.length; i++) {
                    parseGpx(response.gpxs[i]);
                }
                try {
                    var bounds = gpxedit.drawControl.editLayers.getBounds();
                    gpxedit.map.fitBounds(
                        bounds,
                        {
                            animate: true,
                            paddingTopLeft: [parseInt($('#sidebar').css('width')), 0]
                        }
                    );
                }
                catch (err) {
                    console.log('Impossible to fit to bounds \n'+err);
                }
                document.title = 'GpxEdit - ' + folder;
                window.history.pushState({'html': '', 'pageTitle': ''},'', '?dir='+encodeURIComponent(folder));
            }
            hideLoadingAnimation();
        }).fail(function (){
            OC.dialogs.alert('Failed to communicate with the server',
                             'Load folder error');
            hideLoadingAnimation();
        });
    }

    function loadAction(file) {
        if (    !endsWith(file, '.gpx')
             && !endsWith(file, '.kml')
             && !endsWith(file, '.jpg')
             && !endsWith(file, '.csv')
        ) {
            OC.dialogs.alert(
                t('gpxedit', 'Impossible to load this file. ') +
                t('gpxedit', 'Supported formats are gpx, kml, csv (unicsv) and jpg.'),
                t('gpxedit', 'Load error')
            );
            return;
        }

        loadFile(file);
        // set save name
        var spl = file.split('/');
        var basename = spl[spl.length - 1];
        $('input#saveName').val(
            basename.replace(/\.jpg$/, '.gpx')
            .replace(/\.kml$/, '.gpx')
            .replace(/\.csv$/, '.gpx')
        );
    }

    function loadFile(file) {
        var req = {
            path: file
        };
        var url = OC.generateUrl('/apps/gpxedit/getgpx');
        $('#loadingpc').text('0');
        showLoadingAnimation();
        gpxedit.currentAjax = $.ajax({
            type: 'POST',
            async: true,
            url: url,
            data: req,
            xhr: function() {
                var xhr = new window.XMLHttpRequest();
                xhr.addEventListener('progress', function(evt) {
                    if (evt.lengthComputable) {
                        var percentComplete = evt.loaded / evt.total * 100;
                        $('#loadingpc').text(parseInt(percentComplete));
                    }
                }, false);

                return xhr;
            }
        }).done(function (response) {
            if ($('#clearbeforeload').is(':checked')) {
                clear();
            }
            if (response.gpx === '') {
                OC.dialogs.alert('The file does not exist or it is not supported',
                                 'Load error');
            }
            else {
                parseGpx(response.gpx);
                try {
                    var bounds = gpxedit.drawControl.editLayers.getBounds();
                    gpxedit.map.fitBounds(
                        bounds,
                        {
                            animate: true,
                            paddingTopLeft: [parseInt($('#sidebar').css('width')), 0]
                        }
                    );
                }
                catch (err) {
                    console.log('Impossible to fit to bounds \n'+err);
                }
                document.title = 'GpxEdit - ' + file;
                window.history.pushState({'html': '', 'pageTitle': ''},'', '?file='+encodeURIComponent(file));
            }
            hideLoadingAnimation();
        }).fail(function (){
            OC.dialogs.alert('Failed to communicate with the server',
                             'Load error');
            hideLoadingAnimation();
        });
    }

    function deleteTileServer(li, type) {
        var sname = li.attr('servername');
        var req = {
            servername: sname,
            type: type
        };
        var url = OC.generateUrl('/apps/gpxedit/deleteTileServer');
        $.ajax({
            type: 'POST',
            url: url,
            data: req,
            async: true
        }).done(function (response) {
            if (response.done) {
                li.fadeOut('slow', function() {
                    li.remove();
                });
                if (type === 'tile') {
                    var activeLayerName = gpxedit.activeLayers.getActiveBaseLayer().name;
                    // if we delete the active layer, first select another
                    if (activeLayerName === sname) {
                        $('input.leaflet-control-layers-selector').first().click();
                    }
                    gpxedit.activeLayers.removeLayer(gpxedit.baseLayers[sname]);
                    delete gpxedit.baseLayers[sname];
                }
                else {
                    gpxedit.activeLayers.removeLayer(gpxedit.overlayLayers[sname]);
                    delete gpxedit.overlayLayers[sname];
                }
                OC.Notification.showTemporary(t('gpxedit', 'Tile server "{ts}" has been deleted', {ts: sname}));
            }
            else{
                OC.Notification.showTemporary(t('gpxedit', 'Failed to delete tile server "{ts}"', {ts: sname}));
            }
        }).always(function() {
        }).fail(function() {
            OC.Notification.showTemporary(t('gpxedit', 'Failed to delete tile server "{ts}"', {ts: sname}));
        });
    }

    function addTileServer(type) {
        var sname = $('#'+type+'servername').val();
        var surl = $('#'+type+'serverurl').val();
        var sminzoom = $('#'+type+'minzoom').val();
        var smaxzoom = $('#'+type+'maxzoom').val();
        var stransparent = $('#'+type+'transparent').is(':checked');
        var sopacity = $('#'+type+'opacity').val() || '';
        var sformat = $('#'+type+'format').val() || '';
        var sversion = $('#'+type+'version').val() || '';
        var slayers = $('#'+type+'layers').val() || '';
        if (sname === '' || surl === '') {
            OC.dialogs.alert(t('gpxedit', 'Server name or server url should not be empty'),
                             t('gpxedit', 'Impossible to add tile server'));
            return;
        }
        if ($('#'+type+'serverlist ul li[servername="' + sname + '"]').length > 0) {
            OC.dialogs.alert(t('gpxedit', 'A server with this name already exists'),
                             t('gpxedit', 'Impossible to add tile server'));
            return;
        }
        $('#'+type+'servername').val('');
        $('#'+type+'serverurl').val('');

        var req = {
            servername: sname,
            serverurl: surl,
            type: type,
            layers: slayers,
            version: sversion,
            tformat: sformat,
            opacity: sopacity,
            transparent: stransparent,
            minzoom: sminzoom,
            maxzoom: smaxzoom,
            attribution: ''
        };
        var url = OC.generateUrl('/apps/gpxedit/addTileServer');
        $.ajax({
            type: 'POST',
            url: url,
            data: req,
            async: true
        }).done(function (response) {
            if (response.done) {
                $('#'+type+'serverlist ul').prepend(
                    '<li style="display:none;" servername="' + escapeHtml(sname) +
                    '" title="' + escapeHtml(surl) + '">' +
                    escapeHtml(sname) + ' <button>' +
                    '<i class="fa fa-trash" aria-hidden="true" style="color:red;"></i> ' +
                    t('gpxedit', 'Delete') +
                    '</button></li>'
                );
                $('#'+type+'serverlist ul li[servername="' + sname + '"]').fadeIn('slow');

                if (type === 'tile') {
                    // add tile server in leaflet control
                    var newlayer = new L.TileLayer(surl,
                        {minZoom: sminzoom, maxZoom: smaxzoom, attribution: ''});
                    gpxedit.activeLayers.addBaseLayer(newlayer, sname);
                    gpxedit.baseLayers[sname] = newlayer;
                }
                else if (type === 'tilewms'){
                    // add tile server in leaflet control
                    var newlayer = new L.tileLayer.wms(surl,
                        {format: sformat, version: sversion, layers: slayers, minZoom: sminzoom, maxZoom: smaxzoom, attribution: ''});
                    gpxedit.activeLayers.addBaseLayer(newlayer, sname);
                    gpxedit.overlayLayers[sname] = newlayer;
                }
                if (type === 'overlay') {
                    // add tile server in leaflet control
                    var newlayer = new L.TileLayer(surl,
                        {minZoom: sminzoom, maxZoom: smaxzoom, transparent: stransparent, opcacity: sopacity, attribution: ''});
                    gpxedit.activeLayers.addOverlay(newlayer, sname);
                    gpxedit.baseLayers[sname] = newlayer;
                }
                else if (type === 'overlaywms'){
                    // add tile server in leaflet control
                    var newlayer = new L.tileLayer.wms(surl,
                        {layers: slayers, version: sversion, transparent: stransparent, opacity: sopacity, format: sformat, attribution: '', minZoom: sminzoom, maxZoom: smaxzoom});
                    gpxedit.activeLayers.addOverlay(newlayer, sname);
                    gpxedit.overlayLayers[sname] = newlayer;
                }
                OC.Notification.showTemporary(t('gpxedit', 'Tile server "{ts}" has been added', {ts: sname}));
            }
            else{
                OC.Notification.showTemporary(t('gpxedit', 'Failed to add tile server "{ts}"', {ts: sname}));
            }
        }).always(function() {
        }).fail(function() {
            OC.Notification.showTemporary(t('gpxedit', 'Failed to add tile server "{ts}"', {ts: sname}));
        });
    }

    // affects future markers and also existing ones
    function updateLeafletDrawMarkerStyle() {
        var wst = $('#markerstyleselect').val();
        var theclass = symbolSelectClasses[wst];
        $('#markerstyleselect').removeClass($('#markerstyleselect').attr('class'));
        $('#markerstyleselect').attr('style', '');
        if (theclass) {
            $('#markerstyleselect').addClass(theclass);
        }
        else if (wst !== '') {
            var url = OC.generateUrl('/apps/gpxedit/getExtraSymbol?');
            var fullurl = url + 'name=' + encodeURI(wst + '.png');
            $('#markerstyleselect').attr('style',
                'background: url(\'' + fullurl + '\') no-repeat ' +
                'right 8px center rgba(240, 240, 240, 0.90);' +
                'background-size: contain;'
            );
        }
        var tst = $('#tooltipstyleselect').val();
        var theicon = symbolIcons[wst];

        gpxedit.drawControl.setDrawingOptions({
            marker: {
                icon: theicon
            }
        });

        var symboo = $('#symboloverwrite').is(':checked');
        gpxedit.drawControl.editLayers.eachLayer(function(layer) {
            var id = layer.gpxedit_id;
            var name = gpxedit.layersData[id].name;
            var symbol = gpxedit.layersData[id].symbol;
            if (layer.type === 'marker') {
                if (    symboo && symbol !== ''
                     && symbolIcons.hasOwnProperty(symbol)
                ) {
                    layer.setIcon(symbolIcons[symbol]);
                }
                else{
                    layer.setIcon(theicon);
                }
            }
            if (name !== '') {
                layer.unbindTooltip();
                if (tst === 'p') {
                    layer.bindTooltip(name, {permanent: true});
                }
                else{
                    layer.bindTooltip(name, {sticky: true});
                }
            }
        });
    }

    function restoreOptions() {
        var url = OC.generateUrl('/apps/gpxedit/getOptionsValues');
        var req = {
        };
        var optionsValues = '{}';
        $.ajax({
            type: 'POST',
            url: url,
            data: req,
            async: false
        }).done(function (response) {
            optionsValues = response.values;
            //alert('option values: '+optionsValues);
        }).fail(function() {
            OC.dialogs.alert(t('gpxedit', 'Failed to restore options values'),
                             t('gpxedit', 'Error'));
        });
        optionsValues = $.parseJSON(optionsValues);
        if (optionsValues) {
            if (    optionsValues.markerstyle !== undefined
                 && symbolIcons.hasOwnProperty(optionsValues.markerstyle)
            ) {
                $('#markerstyleselect').val(optionsValues.markerstyle);
            }
            if (optionsValues.tooltipstyle !== undefined) {
                $('#tooltipstyleselect').val(optionsValues.tooltipstyle);
            }
            if (optionsValues.unit !== undefined) {
                $('#unitselect').val(optionsValues.unit);
            }
            if (optionsValues.clearbeforeload !== undefined) {
                $('#clearbeforeload').prop('checked', optionsValues.clearbeforeload);
            }
            if (optionsValues.symboloverwrite !== undefined) {
                $('#symboloverwrite').prop('checked', optionsValues.symboloverwrite);
            }
            if (optionsValues.approximateele !== undefined) {
                $('#approximateele').prop('checked', optionsValues.approximateele);
                L.drawLocal.edit.approximateElevations = $('#approximateele').is(':checked');
            }
            if (optionsValues.tilelayer !== undefined) {
                gpxedit.restoredTileLayer = optionsValues.tilelayer;
            }
        }
    }

    function saveOptions() {
        var optionsValues = {};
        optionsValues.markerstyle = $('#markerstyleselect').val();
        optionsValues.tooltipstyle = $('#tooltipstyleselect').val();
        optionsValues.unit = $('#unitselect').val();
        optionsValues.clearbeforeload = $('#clearbeforeload').is(':checked');
        optionsValues.symboloverwrite = $('#symboloverwrite').is(':checked');
        optionsValues.approximateele = $('#approximateele').is(':checked');
        optionsValues.tilelayer = gpxedit.activeLayers.getActiveBaseLayer().name;
        //alert('to save: '+JSON.stringify(optionsValues));

        var req = {
            optionsValues: JSON.stringify(optionsValues)
        };
        var url = OC.generateUrl('/apps/gpxedit/saveOptionsValues');
        $.ajax({
            type: 'POST',
            url: url,
            data: req,
            async: true
        }).done(function (response) {
            //alert(response);
        }).fail(function() {
            OC.dialogs.alert(t('gpxedit', 'Failed to save options values'),
                             t('gpxedit', 'Error'));
        });
    }

    function fillWaypointStyles() {
        for (var st in symbolIcons) {
            $('select#markerstyleselect').append(
                '<option value="' + st + '">' + st + '</option>'
            );
        }
        $('select#markerstyleselect').val('marker');
    }

    function addExtraSymbols() {
        var url = OC.generateUrl('/apps/gpxedit/getExtraSymbol?');
        $('ul#extrasymbols li').each(function() {
            var name = $(this).attr('name');
            var smallname = $(this).html();
            var fullurl = url + 'name=' + encodeURI(name);
            var d = L.icon({
                iconUrl: fullurl,
                iconSize: L.point(24, 24),
                iconAnchor: [12, 12]
            });
            symbolIcons[smallname] = d;
        });
    }

    function saveAction(targetPath) {
        showExportingAnimation();
        var saveName = $('input#saveName').val();
        if (!endsWith(saveName, '.gpx')) {
            saveName = saveName + '.gpx';
        }
        var saveFilePath = targetPath + '/' + saveName;
        var gpxText = generateGpx();
        hideExportingAnimation();
        $('#savingpc').text('0');
        showSavingAnimation();
        var req = {
            path: saveFilePath,
            content: gpxText
        };
        var url = OC.generateUrl('/apps/gpxedit/savegpx');
        $.ajax({
            type: 'POST',
            async: true,
            url: url,
            data: req,
            xhr: function() {
                var xhr = new window.XMLHttpRequest();
                xhr.upload.addEventListener('progress', function(evt) {
                    if (evt.lengthComputable) {
                        var percentComplete = evt.loaded / evt.total * 100;
                        //Do something with upload progress here
                        $('#savingpc').text(parseInt(percentComplete));
                    }
                }, false);

                return xhr;
            }
        }).done(function (response) {
            hideSavingAnimation();
            if (response.status === 'fiw') {
                showSaveFailAnimation(
                    saveFilePath,
                    t('gpxedit', 'Impossible to write file') + ' : ' +
                    t('gpxedit', 'write access denied')
                );
            }
            else if (response.status === 'fu') {
                showSaveFailAnimation(
                    saveFilePath,
                    t('gpxedit', 'Impossible to write file') + ' : ' +
                    t('gpxedit', 'folder does not exist')
                );
            }
            else if (response.status === 'fw') {
                showSaveFailAnimation(
                    saveFilePath,
                    t('gpxedit', 'Impossible to write file') + ' : ' +
                    t('gpxedit', 'folder write access denied')
                );
            }
            else if (response.status === 'bfn') {
                showSaveFailAnimation(
                    saveFilePath,
                    t('gpxedit', 'Bad file name, must end with ".gpx"')
                );
            }
            else{
                showSaveSuccessAnimation(saveFilePath);
            }
        });
    }

    $(document).ready(function() {
        gpxedit.username = $('p#username').html();
        document.onkeydown = checkKey;
        addExtraSymbols();
        fillWaypointStyles();
        restoreOptions();
        load_map();

        $('select#unitselect').change(function(e) {
            saveOptions();
        });
        $('select#markerstyleselect').change(function(e) {
            updateLeafletDrawMarkerStyle();
            saveOptions();
        });
        $('select#tooltipstyleselect').change(function(e) {
            updateLeafletDrawMarkerStyle();
            saveOptions();
        });
        $('body').on('change', '#symboloverwrite', function() {
            updateLeafletDrawMarkerStyle();
            saveOptions();
        });
        // to set the draw style
        updateLeafletDrawMarkerStyle();
        $('body').on('change', '#clearbeforeload', function() {
            saveOptions();
        });
        $('body').on('change', '#approximateele', function() {
            L.drawLocal.edit.approximateElevations = $(this).is(':checked');
            saveOptions();
        });
        $('body').on('click', 'button.popupOkButton', function(e) {
            var id = parseInt($(this).attr('layerid'));
            var name = $(this).parent().find('.layerName').val();
            var linkText = $(this).parent().find('.layerLinkText').val();
            var linkUrl = $(this).parent().find('.layerLinkUrl').val();
            var description = $(this).parent().find('.layerDesc').val();
            var comment = $(this).parent().find('.layerCmt').val();
            var symbol = $(this).parent().find('select[role=symbol]').val();
            var wst = $('#markerstyleselect').val();
            var tst = $('#tooltipstyleselect').val();
            var symboo = $('#symboloverwrite').is(':checked');
            var type = gpxedit.layersData[id].layer.type;

            gpxedit.layersData[id].name = name;
            gpxedit.layersData[id].description = description;
            gpxedit.layersData[id].comment = comment;
            gpxedit.layersData[id].linkText = linkText;
            gpxedit.layersData[id].linkUrl = linkUrl;
            if (symbol !== 'unknown') {
                gpxedit.layersData[id].symbol = symbol;
            }
            gpxedit.layersData[id].layer.unbindTooltip();
            if (type === 'marker') {
                if (symbol === 'unknown') {
                    // pass
                }
                else if (    symboo && symbol !== ''
                          && symbolIcons.hasOwnProperty(symbol)
                ) {
                    gpxedit.layersData[id].layer.setIcon(symbolIcons[symbol]);
                }
                else{
                    var theicon = symbolIcons[wst];
                    gpxedit.layersData[id].layer.setIcon(theicon);
                }
                var lat = $(this).parent().find('.layerLat').val();
                var lon = $(this).parent().find('.layerLon').val();
                var latlng = L.latLng(lat, lon);
                gpxedit.layersData[id].layer.setLatLng(latlng);
            }
            if (name !== '') {
                if (tst === 'p') {
                    gpxedit.layersData[id].layer.bindTooltip(
                        name,
                        {permanent: true}
                    );
                }
                else{
                    gpxedit.layersData[id].layer.bindTooltip(
                        name,
                        {sticky: true}
                    );
                }
            }

            gpxedit.map.closePopup();
        });

        $('button#clearButton').click(function(e) {
            var cancelButton = $('.leaflet-draw .leaflet-draw-section:nth-child(2) li:nth-child(2) a');
            if (cancelButton.is(':visible')) {
                cancelButton[0].click();
            }
            clear();
        });
        $('button#loadButton').click(function(e) {
            var cancelButton = $('.leaflet-draw .leaflet-draw-section:nth-child(2) li:nth-child(2) a');
            if (cancelButton.is(':visible')) {
                cancelButton[0].click();
            }
            if (gpxedit.currentAjax !== null) {
                gpxedit.currentAjax.abort();
                hideLoadingAnimation();
            }
            OC.dialogs.filepicker(
                t('gpxedit', 'Load file (gpx, kml, csv, png)'),
                function(targetPath) {
                    loadAction(targetPath);
                },
                false,
                null,
                true
            );
        });

        $('button#loadFolderButton').click(function(e) {
            if (gpxedit.currentAjax !== null) {
                gpxedit.currentAjax.abort();
                hideLoadingAnimation();
            }
            var type = $('select#loadtypeselect').val();
            OC.dialogs.filepicker(
                t('gpxedit', 'Load folder') + ' (' +
                t('gpxedit', type) +
                ')',
                function(targetPath) {
                    loadFolderAction(targetPath);
                },
                false, "httpd/unix-directory", true
            );
        });

        $('button#saveButton').click(function(e) {
            if (gpxedit.drawControl.editLayers.getLayers().length === 0) {
                showFailAnimation(t('gpxedit', 'There is nothing to save'));
            }
            else{
                var filename = $('#saveName').val();
                OC.dialogs.filepicker(
                    t('gpxedit', 'Where to save') +
                    ' <b>' + filename + '</b>',
                    function(targetPath) {
                        saveAction(targetPath);
                    },
                    false, "httpd/unix-directory", true
                );
            }
        });

        // Custom tile server management
        $('body').on('click', '#tileserverlist button', function(e) {
            deleteTileServer($(this).parent(), 'tile');
        });
        $('#addtileserver').click(function() {
            addTileServer('tile');
        });
        $('body').on('click', '#overlayserverlist button', function(e) {
            deleteTileServer($(this).parent(), 'overlay');
        });
        $('#addoverlayserver').click(function() {
            addTileServer('overlay');
        });

        $('body').on('click', '#tilewmsserverlist button', function(e) {
            deleteTileServer($(this).parent(), 'tilewms');
        });
        $('#addtileserverwms').click(function() {
            addTileServer('tilewms');
        });
        $('body').on('click', '#overlaywmsserverlist button', function(e) {
            deleteTileServer($(this).parent(), 'overlaywms');
        });
        $('#addoverlayserverwms').click(function() {
            addTileServer('overlaywms');
        });

        $('body').on('change', 'select[role=symbol]', function() {
            $(this).removeClass($(this).attr('class'));
            $(this).attr('style', '');
            if (symbolSelectClasses.hasOwnProperty($(this).val())) {
                $(this).addClass(symbolSelectClasses[$(this).val()]);
            }
            else if ($(this).val() !== '') {
                var url = OC.generateUrl('/apps/gpxedit/getExtraSymbol?');
                var fullurl = url + 'name=' + encodeURI($(this).val() + '.png');
                $(this).attr('style',
                    'background: url(\'' + fullurl + '\') no-repeat ' +
                    'right 8px center rgba(240, 240, 240, 0.90);' +
                    'background-size: contain;'
                );
            }
        });

        // load a file if 'file' GET url parameter was given
        var fileparam = getUrlParameter('file');
        if (fileparam && fileparam !== undefined) {
            loadAction(fileparam);
        }
        // load a directory if 'dir' GET url parameter was given
        var dirparam = getUrlParameter('dir');
        if (dirparam && dirparam !== undefined) {
            loadFolderAction(dirparam);
        }

        L.LatLngUtil.cloneLatLng = function (latlng) {
            var ll = L.latLng(latlng.lat, latlng.lng);
            if (latlng.alt) {
                ll.alt = latlng.alt;
            }
            if (latlng.time) {
                ll.time = latlng.time;
            }
            return ll;
        };

        gpxedit.map.on('middlehover', function(m) {
            gpxedit.hovermiddlemarker = m;
        });
        gpxedit.map.on('middlehoverout', function() {
            gpxedit.hovermiddlemarker = null;
        });

        $('body').on('click','h3.customtiletitle', function(e) {
            var forAttr = $(this).attr('for');
            if ($('#'+forAttr).is(':visible')) {
                $('#'+forAttr).slideUp();
                $(this).find('i').removeClass('fa-angle-double-up').addClass('fa-angle-double-down');
            }
            else{
                $('#'+forAttr).slideDown();
                $(this).find('i').removeClass('fa-angle-double-down').addClass('fa-angle-double-up');
            }
        });

        $('body').on('click','#metadatalabel', function(e) {
            if ($('div#metadata').is(':visible')) {
                $('#metadata').slideUp();
                $(this).find('i').removeClass('fa-angle-double-up').addClass('fa-angle-double-down');
            }
            else{
                $('div#metadata').slideDown();
                $(this).find('i').removeClass('fa-angle-double-down').addClass('fa-angle-double-up');
            }
        });

		var buttonColor = 'blue';
        if (OCA.Theming) {
            buttonColor = OCA.Theming.color;
        }

        $('<style role="buttons">.fa { ' +
            'color: ' + buttonColor + '; }</style>').appendTo('body');

    });

})(jQuery, OC);