leaflet-control-geocoder/src/geocoders/mapzen.js

Extendable geocoder with builtin support for Nominatim, Bing, Google, Mapbox, Photon, What3Words, MapQuest, Mapzen

var L = require('leaflet'),
	Util = require('../util');

module.exports = {
	class: L.Class.extend({
		options: {
			serviceUrl: '//search.mapzen.com/v1',
			geocodingQueryParams: {},
			reverseQueryParams: {}
		},

		initialize: function(apiKey, options) {
			L.Util.setOptions(this, options);
			this._apiKey = apiKey;
			this._lastSuggest = 0;
		},

		geocode: function(query, cb, context) {
			var _this = this;
			Util.getJSON(this.options.serviceUrl + "/search", L.extend({
				'api_key': this._apiKey,
				'text': query
			}, this.options.geocodingQueryParams), function(data) {
				cb.call(context, _this._parseResults(data, "bbox"));
			});
		},

		suggest: function(query, cb, context) {
			var _this = this;
			Util.getJSON(this.options.serviceUrl + "/autocomplete", L.extend({
				'api_key': this._apiKey,
				'text': query
			}, this.options.geocodingQueryParams), function(data) {
				if (data.geocoding.timestamp > this._lastSuggest) {
					this._lastSuggest = data.geocoding.timestamp;
					cb.call(context, _this._parseResults(data, "bbox"));
				}
			});
		},

		reverse: function(location, scale, cb, context) {
			var _this = this;
			Util.getJSON(this.options.serviceUrl + "/reverse", L.extend({
				'api_key': this._apiKey,
				'point.lat': location.lat,
				'point.lon': location.lng
			}, this.options.reverseQueryParams), function(data) {
				cb.call(context, _this._parseResults(data, "bounds"));
			});
		},

		_parseResults: function(data, bboxname) {
			var results = [];
			L.geoJson(data, {
				pointToLayer: function (feature, latlng) {
					return L.circleMarker(latlng);
				},
				onEachFeature: function(feature, layer) {
					var result = {};
					result['name'] = layer.feature.properties.label;
					result[bboxname] = layer.getBounds();
					result['center'] = result[bboxname].getCenter();
					result['properties'] = layer.feature.properties;
					results.push(result);
				}
			});
			return results;
		}
	}),

	factory: function(apiKey, options) {
		return new L.Control.Geocoder.Mapzen(apiKey, options);
	}
};