All files / lib/geocoder opendatafrancegeocoder.js

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100% Functions 8/8
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var util             = require('util'),
    AbstractGeocoder = require('./abstractgeocoder');
 
/**
 * Constructor
 */
var OpendataFranceGeocoder = function OpendataFranceGeocoder(httpAdapter, options) {
    this.options = ['language','email','apiKey'];
 
    OpendataFranceGeocoder.super_.call(this, httpAdapter, options);
};
 
util.inherits(OpendataFranceGeocoder, AbstractGeocoder);
 
OpendataFranceGeocoder.prototype._endpoint = 'http://api-adresse.data.gouv.fr/search';
 
OpendataFranceGeocoder.prototype._endpoint_reverse = 'http://api-adresse.data.gouv.fr/reverse';
 
/**
* Geocode
* @param <string|object>   value    Value to geocode (Address or parameters, as specified at https://opendatafrance/api/)
* @param <function> callback Callback method
*/
OpendataFranceGeocoder.prototype._geocode = function(value, callback) {
    var _this = this;
 
    var params = this._getCommonParams();
 
    if (typeof value == 'string') {
      params.q = value;
    } else {
      Eif (value.address) {
        params.q = value.address;
      }
      if (value.lat && value.lon) {
        params.lat = value.lat;
        params.lon = value.lon;
      }
      if (value.zipcode) {
        params.postcode = value.zipcode;
      }
      Eif (value.type) {
        params.type = value.type;
      }
      Iif (value.citycode) {
        params.citycode = value.citycode;
      }
    }
    this._forceParams(params);
 
    this.httpAdapter.get(this._endpoint, params, function(err, result) {
        Iif (err) {
            return callback(err);
        } else {
 
            Iif (result.error) {
              return callback(new Error(result.error));
            }
 
            var results = [];
 
            Eif (result.features) {
              for (var i = 0; i < result.features.length; i++) {
                results.push(_this._formatResult(result.features[i]));
              }
            }
 
            results.raw = result;
            callback(false, results);
        }
 
    });
 
};
 
OpendataFranceGeocoder.prototype._formatResult = function(result) {
 
    var latitude = result.geometry.coordinates[1];
    Eif (latitude) {
      latitude = parseFloat(latitude);
    }
 
    var longitude = result.geometry.coordinates[0];
    Eif (longitude) {
      longitude = parseFloat(longitude);
    }
 
    var properties = result.properties;
 
    var formatedResult = {
        latitude : latitude,
        longitude : longitude,
        state : properties.context,
        city : properties.city,
        zipcode : properties.postcode,
        citycode : properties.citycode,
        countryCode : 'FR',
        country : 'France',
        type: properties.type,
        id: properties.id
    };
 
    if (properties.type === 'housenumber') {
      formatedResult.streetName = properties.street;
      formatedResult.streetNumber = properties.housenumber;
    } else Iif (properties.type === 'street') {
      formatedResult.streetName = properties.name;
    } else if (properties.type === 'city') {
      formatedResult.population = properties.population;
      formatedResult.adm_weight = properties.adm_weight;
    } else if (properties.type === 'village') {
      formatedResult.population = properties.population;
    } else Eif (properties.type === 'locality') {
      formatedResult.streetName = properties.name;
    }
 
    return formatedResult;
};
 
/**
* Reverse geocoding
* @param {lat:<number>,lon:<number>, ...}  lat: Latitude, lon: Longitude, ... see https://wiki.openstreetmap.org/wiki/Nominatim#Parameters_2
* @param <function> callback Callback method
*/
OpendataFranceGeocoder.prototype._reverse = function(query, callback) {
 
    var _this = this;
 
    var params = this._getCommonParams();
    for (var k in query) {
      var v = query[k];
      params[k] = v;
    }
    this._forceParams(params);
 
    this.httpAdapter.get(this._endpoint_reverse , params, function(err, result) {
        Iif (err) {
            return callback(err);
        } else {
 
          Iif(result.error) {
            return callback(new Error(result.error));
          }
 
          var results = [];
 
          Eif (result.features) {
            for (var i = 0; i < result.features.length; i++) {
              results.push(_this._formatResult(result.features[i]));
            }
          }
 
          results.raw = result;
          callback(false, results);
        }
    });
};
 
/**
* Prepare common params
*
* @return <Object> common params
*/
OpendataFranceGeocoder.prototype._getCommonParams = function(){
    var params = {};
 
    for (var k in this.options) {
      var v = this.options[k];
      Eif (!v) {
        continue;
      }
      if (k === 'language') {
        k = 'accept-language';
      }
      params[k] = v;
    }
 
    return params;
};
 
OpendataFranceGeocoder.prototype._forceParams = function(params){
  params.limit = 20;
};
 
module.exports = OpendataFranceGeocoder;