// Leaflet extensions
L.extend(L.LatLngBounds.prototype, {
  getSize: function () {
    return (this._northEast.lat - this._southWest.lat) *
           (this._northEast.lng - this._southWest.lng);
  },

  wrap: function () {
    return new L.LatLngBounds(this._southWest.wrap(), this._northEast.wrap());
  }
});

L.Icon.Default.imagePath = <%= "#{asset_prefix}/images".to_json %>;

var objectLayer;
var objectLoader;

function mapLayers() {
  return [
    {
      klass: L.OSM.Mapnik,
      attribution: "",
      keyid: "mapnik",
      layerCode: "M",
      name: I18n.t("javascripts.map.base.standard")
    },
    {
      klass: L.OSM.CycleMap,
      attribution: "Tiles courtesy of <a href='http://www.opencyclemap.org/' target='_blank'>Andy Allan</a>",
      keyid: "cyclemap",
      layerCode: "C",
      name: I18n.t("javascripts.map.base.cycle_map")
    },
    {
      klass: L.OSM.TransportMap,
      attribution: "Tiles courtesy of <a href='http://www.opencyclemap.org/' target='_blank'>Andy Allan</a>",
      keyid: "transportmap",
      layerCode: "T",
      name: I18n.t("javascripts.map.base.transport_map")
    },
    {
      klass: L.OSM.MapQuestOpen,
      attribution: "Tiles courtesy of <a href='http://www.mapquest.com/' target='_blank'>MapQuest</a> <img src='http://developer.mapquest.com/content/osm/mq_logo.png'>",
      keyid: "mapquest",
      layerCode: "Q",
      name: I18n.t("javascripts.map.base.mapquest")
    }
  ]
}

function getUserIcon(url) {
  return L.icon({
    iconUrl: url || <%= asset_path('marker-red.png').to_json %>,
    iconSize: [25, 41],
    iconAnchor: [12, 41],
    popupAnchor: [1, -34],
    shadowUrl: <%= asset_path('images/marker-shadow.png').to_json %>,
    shadowSize: [41, 41]
  });
}

function addObjectToMap(object, map, options) {
  if (objectLoader) {
    objectLoader.abort();
  }

  if (objectLayer) {
    map.removeLayer(objectLayer);
  }

  objectLoader = $.ajax({
    url: OSM.apiUrl(object),
    dataType: "xml",
    success: function (xml) {
      objectLayer = new L.OSM.DataLayer(null, {
        styles: {
          node: options.style,
          way: options.style,
          area: options.style
        }
      });

      objectLayer.interestingNode = function (node, ways, relations) {
        if (object.type === "node") {
          return true;
        } else if (object.type === "relation") {
          for (var i = 0; i < relations.length; i++)
            if (relations[i].members.indexOf(node) != -1)
              return true;
        } else {
          return false;
        }
      };

      objectLayer.addData(xml);

      var bounds = objectLayer.getBounds();

      if (options.zoom) {
        map.fitBounds(bounds);
      }

      if (options.callback) {
        options.callback(bounds);
      }

      objectLayer.addTo(map);
    }
  });
}