node-geocoder/dist/lib/geocoder/geocodiogeocoder.js

Node Geocoder, node geocoding library, supports google maps, mapquest, open street map, tom tom, promise

"use strict";
var querystring = require('querystring'), util = require('util'), AbstractGeocoder = require('./abstractgeocoder');
/**
 * Constructor
 */
var GeocodioGeocoder = function GeocodioGeocoder(httpAdapter, apiKey) {
    GeocodioGeocoder.super_.call(this, httpAdapter);
    if (!apiKey || apiKey == 'undefined') {
        throw new Error(this.constructor.name + ' needs an apiKey');
    }
    this.apiKey = apiKey;
    this._endpoint = 'https://api.geocod.io/v1';
};
util.inherits(GeocodioGeocoder, AbstractGeocoder);
/**
 * Geocode
 * @param <string>   value    Value to geocode (Address)
 * @param <function> callback Callback method
 */
GeocodioGeocoder.prototype._geocode = function (value, callback) {
    var _this = this;
    this.httpAdapter.get(this._endpoint + '/geocode', {
        q: value,
        api_key: querystring.unescape(this.apiKey)
    }, function (err, result) {
        if (err) {
            return callback(err);
        }
        if (result.error) {
            return callback(new Error('Status is ' + result.error), {
                raw: result
            });
        }
        var results = [];
        var locations = result.results;
        for (var i = 0; i < locations.length; i++) {
            results.push(_this._formatResult(locations[i]));
        }
        results.raw = result;
        callback(false, results);
    });
};
GeocodioGeocoder.prototype._formatResult = function (result) {
    var accuracy = result.accuracy < 1 ? result.accuracy - 0.1 : 1;
    return {
        latitude: result.location.lat,
        longitude: result.location.lng,
        country: result.address_components.country,
        formattedAddress: result.formatted_address,
        city: result.address_components.city,
        state: result.address_components.state,
        zipcode: result.address_components.zip,
        streetName: result.address_components.formatted_street,
        streetNumber: result.address_components.number,
        countryCode: null,
        extra: {
            confidence: accuracy || 0
        }
    };
};
/**
 * Reverse geocoding
 * @param {lat:<number>,lon:<number>}  lat: Latitude, lon: Longitude
 * @param <function> callback Callback method
 */
GeocodioGeocoder.prototype._reverse = function (query, callback) {
    var lat = query.lat;
    var lng = query.lon;
    var _this = this;
    this.httpAdapter.get(this._endpoint + '/reverse', {
        q: lat + ',' + lng,
        api_key: querystring.unescape(this.apiKey)
    }, function (err, result) {
        if (err) {
            return callback(err);
        }
        var results = [];
        var locations = result.results;
        for (var i = 0; i < locations.length; i++) {
            results.push(_this._formatResult(locations[i]));
        }
        results.raw = result;
        callback(false, results);
    });
};
module.exports = GeocodioGeocoder;