<?php
/**
 * A resolver for resolving states locally
 *
 * @author		Roland Haeder <webmaster@ship-simu.org>
 * @version		0.0.0
 * @copyright	Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2011 Hub Developer Team
 * @license		GNU GPL 3.0 or any newer version
 * @link		http://www.ship-simu.org
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
class NetworkStateResolver extends BaseStateResolver implements StateResolver {
	/**
	 * Last successfull resolved state (name)
	 */
	private $lastStateName = '';

	/**
	 * Last successfull resolved state (instance)
	 */
	private $lastStateInstance = null;

	/**
	 * Protected constructor
	 *
	 * @return	void
	 */
	protected function __construct () {
		// Call parent constructor
		parent::__construct(__CLASS__);

		// Set prefix to 'Network'
		$this->setStatePrefix('Network');
	}

	/**
	 * Creates an instance of a resolver class with a given state
	 *
	 * @return	$resolverInstance	The prepared state resolver instance
	 */
	public static final function createNetworkStateResolver () {
		// Create the new instance
		$resolverInstance = new NetworkStateResolver();

		// Return the prepared instance
		return $resolverInstance;
	}

	/**
	 * Returns an state instance for a given package class
	 *
	 * @param	$packageInstance	An instance of a package class
	 * @param	$packageData		Raw package data
	 * @param	$socketResource		A valid socket resource
	 * @return	$stateInstance		An instance of the resolved state
	 * @todo	~30% done
	 */
	public function resolveStateByPackage (Networkable $packageInstance, array $packageData, $socketResource) {
		// Init state instance
		$stateInstance = null;

		// Get error code
		$errorCode = $packageInstance->getErrorCode();

		// Is the code a number, then we have to change it
		if (($errorCode == 134) || ($errorCode == 107)) {
			// Transport endpoint not connected, should be handled else!
			// @TODO On some systems it is 134, on some 107?
			$errorCode = BaseNetworkPackageHandler::SOCKET_ERROR_TRANSPORT_ENDPOINT;
		} elseif (is_int($errorCode)) {
			// Unhandled error code detected, so first debug it because we may want to handle it like the others
			$this->debugOutput('[' . __METHOD__ . ':' . __LINE__ . '] UNKNOWN ERROR CODE = ' . $errorCode, ', MESSAGE = ' . socket_strerror($errorCode));

			// Change it only in this class
			$errorCode = BaseNetworkPackageHandler::SOCKET_ERROR_UNKNOWN;
		} // END - if

		// Create a state instance based on $errorCode. This factory does the hard work for us
		$stateInstance = PeerStateFactory::createPeerStateInstanceByErrorCode($errorCode, $packageData, $socketResource);

		// Return the prepared instance
		return $stateInstance;
	}
}

// [EOF]
?>