<?php

namespace alveolata\auth;

require_once(DIR_ALVEOLATA . '/auth/abstract/interface-server.php');
require_once(DIR_ALVEOLATA . '/auth/implementation-srp/functions-server.php');


/**
 * @author Christian Fraß <frass@greenscale.de>
 */
class implementation_server_srp implements interface_server
{
	
	/**
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public function __construct(
		struct_srp_subject $subject,
		\Closure $registration_handle,
		\Closure $get_salt_and_verifier,
		\Closure $state_save,
		\Closure $state_load
	)
	{
		$this->subject = $subject;
		$this->registration_handle = $registration_handle;
		$this->get_salt_and_verifier = $get_salt_and_verifier;
		$this->state_save = $state_save;
		$this->state_load = $state_load;
	}
	
	
	/**
	 * @implementation
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public function register(
		string $username,
		string $password
	) : bool
	{
		$proc = srp_server_register(
			$this->registration_handle
		);
		return $proc($username, $password);
	}
	
	
	/**
	 * @implementation
	 * @author Christian Fraß <frass@greenscale.de>
	 */
	public function login(
		string $kind,
		$parameters
	) : bool
	{
		switch ($kind) {
			default: {
				throw (new \Exception('unhandled'));
				break;
			}
			case 'step1': {
				$proc = srp_server_login_1(
					$this->subject,
					$this->state_save,
					$this->get_salt_and_verifier
				);
				return $proc($username, $password);
				break;
			}
			case 'step2': {
				$proc = srp_server_login_1(
					$this->subject,
					$this->state_load
				);
				return $proc($username, $password);
				break;
			}
		}
	}
	
}

?>