Google Maps API address components parser

parseGoogleMapsAddressComponents.js

/**
 * parseGoogleMapsAddressComponents
 *
 * Converts the addressComponents sent by GoogleMaps into a clean object
 * The precision value allows to know what is the precision level of the address (one point per component)
 * Ex: If the street number is available, then the precision value would be 6.
 *
 * @param addressComponents
 * @returns object
 */
function parseGoogleMapsAddressComponents(addressComponents) {

    var address = {
        country: null,
        region: null,
        department: null,
        city: null,
        street: null,
        streetNumber: null
    };

    addressComponents.forEach(function(addressComponent) {

        var countryIdx      = addressComponent.types.indexOf('country'),
            regionIdx       = addressComponent.types.indexOf('administrative_area_level_1'),
            departmentIdx   = addressComponent.types.indexOf('administrative_area_level_2'),
            cityIdx         = addressComponent.types.indexOf('locality'),
            streetIdx       = addressComponent.types.indexOf('route'),
            streetNumberIdx = addressComponent.types.indexOf('street_number');

        switch (true) {
            case countryIdx !== -1 :
                address.country = addressComponent.long_name;
                break;
            case regionIdx !== -1 :
                address.region = addressComponent.long_name;
                break;
            case departmentIdx !== -1 :
                address.department = addressComponent.long_name;
                break;
            case cityIdx !== -1 :
                address.city = addressComponent.long_name;
                break;
            case streetIdx !== -1 :
                address.street = addressComponent.long_name;
                break;
            case streetNumberIdx !== -1 :
                address.streetNumber = addressComponent.long_name;
                break;
        }
    });

    var precision = 0;
    for(var key in address) {
        if (address[key] !== null) {
            precision++;
        }
    }

    address.precision = precision;

    return address;
}