<?php

// include the config file
if(!isset($config)) {
	require_once '../util/AlphaConfig.inc';
	$config = AlphaConfig::getInstance();
	
	require_once $config->get('app.root').'alpha/util/AlphaAutoLoader.inc';
}

/**
 *
 * Controller for viewing Business Objects as Excel spreadsheets
 * 
 * @package alpha::controller
 * @since 1.0
 * @author John Collins <dev@alphaframework.org>
 * @version $Id: ViewExcel.php 1548 2012-07-29 17:07:07Z alphadevx $
 * @license http://www.opensource.org/licenses/bsd-license.php The BSD License
 * @copyright Copyright (c) 2012, John Collins (founder of Alpha Framework).  
 * All rights reserved.
 * 
 * <pre>
 * Redistribution and use in source and binary forms, with or 
 * without modification, are permitted provided that the 
 * following conditions are met:
 * 
 * * Redistributions of source code must retain the above 
 *   copyright notice, this list of conditions and the 
 *   following disclaimer.
 * * Redistributions in binary form must reproduce the above 
 *   copyright notice, this list of conditions and the 
 *   following disclaimer in the documentation and/or other 
 *   materials provided with the distribution.
 * * Neither the name of the Alpha Framework nor the names 
 *   of its contributors may be used to endorse or promote 
 *   products derived from this software without specific 
 *   prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * </pre>
 *  
 */
class ViewExcel extends AlphaController implements AlphaControllerInterface {
	/**
	 * Trace logger
	 * 
	 * @var Logger
	 * @since 1.0
	 */
	private static $logger = null;
	
	/**
	 * Constructor
	 * 
	 * @since 1.0
	 */
	public function __construct() {
		self::$logger = new Logger('ViewExcel');
		self::$logger->debug('>>__construct()');
		
		// ensure that the super class constructor is called, indicating the rights group
		parent::__construct('Public');
		
		self::$logger->debug('<<__construct');
	}
	
	/**
	 * Loads the BO indicated in the GET request and handles the conversion to Excel 
	 *
	 * @param array $params
	 * @throws ResourceNotFoundException
	 * @since 1.0
	 */
	public function doGet($params) {
		self::$logger->debug('>>doGet(params=['.var_export($params, true).'])');
		
		try {
			if(isset($params['bo'])) {
				AlphaDAO::loadClassDef($params['bo']);
				$BO = new $params['bo'];
				
				// the name of the file download
				if(isset($params['oid']))
					$fileName = $BO->getTableName().'-'.$params['oid'];
				else
					$fileName = $BO->getTableName();
				
				//header info for browser
				header('Content-Type: application/vnd.ms-excel');
				header('Content-Disposition: attachment; filename='.$fileName.'.xls');
				header('Pragma: no-cache');
				header('Expires: 0');
				
				// handle a single BO
				if(isset($params['oid'])) {
					$BO->load($params['oid']);
					AlphaDAO::disconnect();
					
					$convertor = new AlphaDAO2Excel($BO);
					$convertor->render();
				}else{
					// handle all BOs of this type
					$BOs = $BO->loadAll();
					AlphaDAO::disconnect();
					
					$first = true;
					
					foreach($BOs as $BO) {
						$convertor = new AlphaDAO2Excel($BO);
						if($first) {
							$convertor->render(true);
							$first = false;
						}else{
							$convertor->render(false);
						}
					}
				}
			}else{
				throw new IllegalArguementException('No BO parameter available for ViewExcel controller!');
			}
		}catch (BONotFoundException $e) {
			self::$logger->error($e->getMessage());
			throw new ResourceNotFoundException($e->getMessage());
		}catch (IllegalArguementException $e) {
			self::$logger->error($e->getMessage());
			throw new ResourceNotFoundException($e->getMessage());
		}
		
		self::$logger->debug('<<__doGet');
	}
	
	/**
	 * Handle POST requests
	 * 
	 * @param array $params
	 * @since 1.0
	 */
	public function doPOST($params) {
		self::$logger->debug('>>doPOST($params=['.var_export($params, true).'])');		
		
		self::$logger->debug('<<doPOST');
	}
	
}

// now build the new controller if this file is called directly
if ('ViewExcel.php' == basename($_SERVER['PHP_SELF'])) {
	$controller = new ViewExcel();
	
	if(!empty($_POST)) {			
		$controller->doPOST($_POST);
	}else{
		$controller->doGET($_GET);
	}
}

?>