/**
 * @param HttpClient $client an HTTP adapter
 * @param string $root url of Pelias API
 * @param int $version version of Pelias API
 */
public function __construct(HttpClient $client, string $root, int $version = 1)
{
 $this->_setPeliasApiRoot($root, $version);
 parent::__construct($client);
}
/**
 * Set the API root and version, see "_setPeliasApiRoot"
 * @param string $root url of Pelias API
 * @param int $version version of Pelias API
 */
public function set_Pelias_ApiRoot(string $root, int $version = 1)
{
 return $this->_setPeliasApiRoot($root, $version);
}
/**
 * Set the API root and version
 * @param string $root url of Pelias API
 * @param int $version version of Pelias API
 */
protected function _setPeliasApiRoot(string $root, int $version = 1)
{
 $this->root = sprintf('%s/v%d', rtrim($root, '/'), $version);
 $this->version = $version;
}

const API_URL = 'https://api.openrouteservice.org/geocode';
const API_VERSION = 1;
/**
 * @var string
 */
private $apiKey;
/**
 * @param HttpClient $client an HTTP adapter
 * @param string $apiKey an API key
 */
public function __construct(HttpClient $client, string $apiKey)
{
 if (empty($apiKey)) {
 throw new InvalidCredentials('No API key provided.');
 }
 
 $this->apiKey = $apiKey;
 parent::__construct($client, self::API_URL, self::API_VERSION);
 $this->_set_ORS_API_Root(self::API_URL, self::API_VERSION, TRUE);
}
/**
 * Set the Openrouteservice URL
 * @param string $root
 * @param integer $version
 * @param boolean $check_version
 * @return void
 */
public function set_ORS_API_Root(string $root, $version, $check_version = false)
{
 return $this->_set_ORS_API_Root($root, $version, $check_version);
}
/**
 * Set the Openrouteservice URL
 * @param string $root
 * @param integer $version
 * @param boolean $check_version
 * @return void
 */
protected function _set_ORS_API_Root(string $root, $version, $check_version = false)
{
 parent::_setPeliasApiRoot($root, $version);
 if (filter_var($check_version, FILTER_VALIDATE_BOOLEAN)) {
 $this->_check_ORS_API_Root_Version($root, $root, $version);
 }
}
/**
 * Openrouteservice does not use /v1 in first version, but plan to add
 * /v2 in next version.
 *
 * @see https://ask.openrouteservice.org/t/pelias-version-in-api-url/1021
 * @param string $root
 * @param string $new_root
 * @param string $version
 * @return void
 */
protected function _check_ORS_API_Root_Version(string &$root, string $new_root, $version)
{
 $version_ok = true;
 $version_ok = ($version_ok && is_numeric($version));
 $version_ok = ($version_ok && ($version === self::API_VERSION));
 $version_ok = ($version_ok && is_string($new_root));
 $version_ok = ($version_ok && !empty($new_root));
 $version_ok = (bool) $version_ok;
 
 if ($version_ok) {
 $root = $new_root;
 }
}