<?php
/**
 * Copyright 2009, 2010 AEGEE-Europe
 *
 * This file is part of AEGEE-Europe Online Membership System.
 *
 * AEGEE-Europe Online Membership System 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.
 *
 * AEGEE-Europe Online Membership System 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 AEGEE-Europe Online Membership System.  If not, see
 * <http://www.gnu.org/licenses/>.
 */

/**
 * Diet Service. This class provides functionality to
 * handle diets
 */

require_once(FILESYSTEMROOTPATH."events/include/dao/DietDao.php");

class DietService {
	private $dietDao;

	/**
	 * Default constructor
	 *
	 * @param DietDao
	 */
	public function __construct(DietDao $dietDao) {
		$this->dietDao = $dietDao;
	}

	/**
	 * Load a diet by id
	 *
	 * @param string id of the diet to be loaded
	 * @return Diet containing the data of the requested diet, or NULL in case diet does not exist
	 */
	public function load($id) {
		$diet = $this->dietDao->load($id);
		$ret = array ("id" => $diet->getId(),
								"name" => $diet->getName(),
							"active" => $diet->getActive(),
				 "description" => $diet->getDescription());
		return $ret;
	}

	/**
	 * Load all Diets
	 *
	 * @return array of Diet
	 */
	public function loadAll() {
		$ret = array();
		$diets = $this->dietDao->loadAll();
		foreach( $diets as $diet ) {
			$ret[ $diet->getId() ] = array ("id" => $diet->getId(),
																						"name" => $diet->getName(),
																					"active" => $diet->getActive(),
																		 "description" => $diet->getDescription());
		}
		return $ret;
	}

	/**
	 * Load all Active Diets
	 *
	 * @return array of Diet
	 */
	public function loadActive() {
		$ret = array();
		$diets = $this->dietDao->loadActive();
		foreach( $diets as $diet ) {
			$ret[ $diet->getId() ] = array ("id" => $diet->getId(),
																						"name" => $diet->getName(),
																					"active" => $diet->getActive(),
																		 "description" => $diet->getDescription());
		}
		return $ret;
	}


	/**
	 * Save or update a diet
	 *
	 * @param Diet object with the diet data
	 * @return boolean true in case of success, false otherwise
	 */
	public function saveOrUpdate(IModel $diet) {
		return $this->dietDao->saveOrUpdate($diet);
	}
}