/**
 * Adds a polyline between Dublin, London, Paris and Berlin to the map
 *
 * @param  {H.Map} map      A HERE Map instance within the application
 */
function addPolylineToMap(map) {
    var lineString = new H.geo.LineString();

    lineString.pushPoint({ lat: 53.3477, lng: -6.2597 });
    lineString.pushPoint({ lat: 51.5008, lng: -0.1224 });
    lineString.pushPoint({ lat: 48.8567, lng: 2.3508 });
    lineString.pushPoint({ lat: 52.5166, lng: 13.3833 });

    map.addObject(new H.map.Polyline(
        lineString, { style: { lineWidth: 4 } }
    ));
}

/**
 * Boilerplate map initialization code starts below:
 */

//Step 1: initialize communication with the platform
// In your own code, replace variable window.apikey with your own apikey
var platform = new H.service.Platform({
    apikey: window.apikey
});
var defaultLayers = platform.createDefaultLayers();

//Step 2: initialize a map - this map is centered over Europe
var map = new H.Map(document.getElementById('map'),
    defaultLayers.vector.normal.map, {
    center: { lat: 52, lng: 5 },
    zoom: 5,
    pixelRatio: window.devicePixelRatio || 1
});
// add a resize listener to make sure that the map occupies the whole container
window.addEventListener('resize', () => map.getViewPort().resize());

//Step 3: make the map interactive
// MapEvents enables the event system
// Behavior implements default interactions for pan/zoom (also on mobile touch environments)
var behavior = new H.mapevents.Behavior(new H.mapevents.MapEvents(map));

// Create the default UI components
var ui = H.ui.UI.createDefault(map, defaultLayers);


// Now use the map as required...
addPolylineToMap(map);