<?php
/**
 * A verifier filter for birthday data
 *
 * @author		Roland Haeder <webmaster@ship-simu.org>
 * @version		0.0.0
 * @copyright	Copyright (c) 2007, 2008 Roland Haeder, 2009 Ship-Simu 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 BirthdayVerifierFilter extends BaseShipSimuFilter implements Filterable {
	/**
	 * Protected constructor
	 *
	 * @return	void
	 */
	protected function __construct () {
		// Call parent constructor
		parent::__construct(__CLASS__);
	}

	/**
	 * Creates an instance of this filter class
	 *
	 * @return	$filterInstance			An instance of this filter class
	 */
	public final static function createBirthdayVerifierFilter () {
		// Get a new instance
		$filterInstance = new BirthdayVerifierFilter();

		// Return the instance
		return $filterInstance;
	}

	/**
	 * Executes the filter with given request and response objects
	 *
	 * @param	$requestInstance	An instance of a class with an Requestable interface
	 * @param	$responseInstance	An instance of a class with an Responseable interface
	 * @return	void
	 */
	public function execute (Requestable $requestInstance, Responseable $responseInstance) {
		// Execute the parent execute method
		parent::execute($requestInstance, $responseInstance);

		// Day of birth set?
		if (!$requestInstance->isRequestElementSet('birth_day')) {
			// Day of birth isn't set
			$requestInstance->requestIsValid(false);

			// Add a message to the response
			$responseInstance->addFatalMessage('day_of_birth_unset');
		} // END - if

		// Month of birth set?
		if (!$requestInstance->isRequestElementSet('birth_month')) {
			// Month of birth isn't set
			$requestInstance->requestIsValid(false);

			// Add a message to the response
			$responseInstance->addFatalMessage('month_of_birth_unset');
		} // END - if

		// Year of birth set?
		if (!$requestInstance->isRequestElementSet('birth_year')) {
			// Year of birth isn't set
			$requestInstance->requestIsValid(false);

			// Add a message to the response
			$responseInstance->addFatalMessage('year_of_birth_unset');
		} // END - if

		// Is the request still valid?
		if (!$requestInstance->isRequestValid()) {
			// Abort here
			throw new FilterChainException($this, self::EXCEPTION_FILTER_CHAIN_INTERCEPTED);
		} // END - if

		// Now comes the final check
		$birthCheck = mktime(
			0,
			0,
			0,
			$requestInstance->getRequestElement('birth_day'),
			$requestInstance->getRequestElement('birth_month'),
			$requestInstance->getRequestElement('birth_year')
		);

		// Is there a number or such? (we don't care about the value itself here)
		if (empty($birthCheck)) {
			// Validation has failed
			$requestInstance->requestIsValid(false);

			// Add a message to the response
			$responseInstance->addFatalMessage('birthday_invalid');

			// Abort here
			throw new FilterChainException($this, self::EXCEPTION_FILTER_CHAIN_INTERCEPTED);
		} // END - if
	}
}

// [EOF]
?>