/* */


var map;
var drawnItems;
var statsControl;
var drawControl;


// http://stackoverflow.com/a/18324384/661150
function callAjax(url, callback)
{
    var xmlhttp;
    // compatible with IE7+, Firefox, Chrome, Opera, Safari
    xmlhttp = new XMLHttpRequest();
    xmlhttp.onreadystatechange = function(){
        if (xmlhttp.readyState == 4 && xmlhttp.status == 200){
            callback(xmlhttp.responseText);
        }
    }
    xmlhttp.open("GET", url, true);
    xmlhttp.send();
}


function gitmap_reload() {
    callAjax("read.cgi", (function(req) {
        var map = window.map;
        drawnItems.clearLayers();

        var objects = JSON.parse(req).objects;
        var num_objects = objects.length;
        for (var i=0; i<num_objects; i++) {
            var gitmap_file = objects[i].file;
            var gitmap_object = objects[i].contents;
            var marker = L.marker(gitmap_object.location);
            for (var opt in Object.keys(gitmap_object.options)) {
                marker.options[opt] = gitmap_object.options[opt];
            }
            var popup = '';
            if (gitmap_file.match(/^office/i)) {
                marker.options.icon = L.AwesomeMarkers.icon({icon: 'building', prefix: 'fa', markerColor: 'red'});
                popup = gitmap_file;
            } else {
                marker.options.icon = L.AwesomeMarkers.icon({icon: 'person', prefix: 'ion'});
                text1 = '<a href="http://rover.redhat.com/people/profile/'+gitmap_file+'" target="_blank">roster</a>';
                text2 = '';
                popup = gitmap_file+' '+text1+' '+text2;
            }
            marker.options.id=gitmap_file;
            marker.bindLabel(gitmap_file, { noHide: true });
            marker.bindPopup(popup);
            drawnItems.addLayer(marker);
        }

	if (drawControl == null) {
	    // add drawControl only after some drawnItems exist, so
	    // it is not shown disabled
	    drawControl = new L.Control.Draw({
		draw: {
		    position: 'topleft',
		    polygon: false,
		    rectangle: false,
		    polyline: false,
		    circle: false
		},
		edit: {
		    featureGroup: drawnItems
		}
	    });
	    map.addControl(drawControl);
	}
    }));
    callAjax("summary.cgi", function(req) {
        var sc = window.statsControl;
        var leaflet = '<a href="http://leafletjs.com">Leaflet</a>';
        sc.setPrefix (req + ' | ' + leaflet);
    });
}


function gitmap_setup() {
    var osmUrl = 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
        osmAttrib = '&copy; <a href="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
        osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib});
    
    map = new L.Map('map', {layers: [osm], attributionControl: false, center: new L.LatLng(0, 0), zoom: 2 });
    
    drawnItems = new L.MarkerClusterGroup({maxClusterRadius: 45}); // new L.FeatureGroup();
    map.addLayer(drawnItems);
    gitmap_reload();
    
    // drawcontrol formerly added here
    
    var refreshButton = new L.easyButton('icon ion-refresh', function() {gitmap_reload();});
    refreshButton.button.style.fontSize = '18px';
    map.addControl (refreshButton);

    var helpButton = new L.easyButton('icon ion-help-circled', function() {open("about.html");});
    helpButton.button.style.fontSize = '18px';
    map.addControl (helpButton);

    var controlSearch = new L.Control.Search({layer: drawnItems,
                                              propertyName: 'id',
                                              initial: false,
                                              zoom: 12});
    map.addControl( controlSearch );

    statsControl = new L.control.attribution({position:'bottomright', prefix:''});
    map.addControl(statsControl);

    scaleControl = new L.control.scale();
    map.addControl(scaleControl);

    terminator = new L.terminator();
    terminator.options.opacity=0.2;
    terminator.options.fillOpacity=0.2;
    terminator.addTo(map);
    setInterval(function() {updateTerminator(terminator);}, 60000); // 1 minute
    function updateTerminator(t) {
        var t2 = L.terminator();
        t.setLatLngs(t2.getLatLngs());
        t.redraw();
    }
        
    // called after new marker is created
    map.on('draw:created', function (e) {
        var type = e.layerType,
            layer = e.layer;
        if (type !== 'marker') return;
        
        var userid = prompt("Marker name (e.g., kerberos userid):", "");
        if (userid != null) {
            layer.options.id=userid;
            layer.bindPopup(userid);
            drawnItems.addLayer(layer);
            callAjax("write.cgi?op=new"+
                     "&id="+encodeURIComponent(userid)+
                     "&location="+encodeURIComponent(JSON.stringify(layer.getLatLng()))+
                     "&options="+encodeURIComponent("{}"),
                     function(req){alert("response:\n"+req);
                                  gitmap_reload();});
        }
    });

    map.on('draw:edited', function (e) {
        e.layers.eachLayer(function (layer) {
            var type = layer.layerType;
            var userid = layer.options.id;
            callAjax("write.cgi?op=edit"+
                     "&id="+encodeURIComponent(userid)+
                     "&location="+encodeURIComponent(JSON.stringify(layer.getLatLng()))+
                     "&options="+encodeURIComponent("{}"),
                     function(req){alert("response:\n"+req);
                                  gitmap_reload();});
        });
    });
    
    map.on('draw:deleted', function (e) {
        e.layers.eachLayer(function (layer) {
            var type = layer.layerType;
            var userid = layer.options.id;
            callAjax("write.cgi?op=delete"+
                     "&id="+encodeURIComponent(userid),
                     function(req){alert("response:\n"+req);
                                  gitmap_reload();});
        });
    });

    

}