define(['leaflet'], function (L) {
  'use strict';

  return L.CircleMarker.extend({
    outerCircle: {
      stroke: false,
      color: '#4285F4',
      opacity: 1,
      fillOpacity: 0.3,
      clickable: false,
      radius: 16
    },

    innerCircle: {
      stroke: true,
      color: '#ffffff',
      fillColor: '#4285F4',
      weight: 1.5,
      clickable: false,
      opacity: 1,
      fillOpacity: 1,
      radius: 7
    },

    accuracyCircle: {
      stroke: true,
      color: '#4285F4',
      weight: 1,
      clickable: false,
      opacity: 0.7,
      fillOpacity: 0.2
    },

    initialize: function (latlng) {
      this.accuracyCircle = L.circle(latlng, 0, this.accuracyCircle);
      this.outerCircle = L.circleMarker(latlng, this.outerCircle);
      L.CircleMarker.prototype.initialize.call(this, latlng, this.innerCircle);

      this.on('remove', function () {
        this._map.removeLayer(this.accuracyCircle);
        this._map.removeLayer(this.outerCircle);
      });
    },

    setLatLng: function (latlng) {
      this.accuracyCircle.setLatLng(latlng);
      this.outerCircle.setLatLng(latlng);
      L.CircleMarker.prototype.setLatLng.call(this, latlng);
    },

    setAccuracy: function (accuracy) {
      this.accuracyCircle.setRadius(accuracy);
    },

    onAdd: function (map) {
      this.accuracyCircle.addTo(map).bringToBack();
      this.outerCircle.addTo(map);
      L.CircleMarker.prototype.onAdd.call(this, map);
    }
  });
});