<?php
/**
 * configurable event controller
 * 
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2005 by http://wombat.exit0.net
 * @package wombatSite
 * @subpackage event
 */
 
/**
 * event
 *
 *
 * @version 1.0.0
 * @package wombatSite
 * @subpackage event
 */
class wbEventController
{
   /**
    * event id
    * @var array $_id
    */
    var $_id;

   /**
    * event message
    * @var string $_msg
    */
    var $_msg;

   /**
    * event data
    * @var string $_msg
    */
    var $_e;

   /**
    * global event configuraation
    * @var array $_config
    */
    var $_config;

   /**
    * patConfiguration objoct
    * @var object $_conf
    */
    var $_conf;

   /**
    * constructor
    *
    * @access public
    */
    function __construct() {
        $this->_conf    =&  wbFactory::singleton( 'patConfiguration' );
        $this->_conf->loadConfig( 'event.xml' );
        $this->_config  =   $this->_conf->getConfigValue();
        $this->_conf->clearConfigValue();
    }

   /**
    * constructor wrapper for PHP4
    *
    * @access public
    * @see __construct()
    */
    function wbEventController() {
        $this->__construct();
    }

   /**
    * trigger event
    *
    * @param string $id event id - use namespaces
    * @param string $msg event message
    * @param array $data additional information
    */
    function trigger( $e ) {

        $id =   $e->getId();
        wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" Msg: "' . $e->getMsg() . '"', 'Trigger' );

        foreach( $this->_config['events'] as $event ) {

            if( !preg_match( $event['trigger'], $id ) ) {
                continue;
            }

            if( !isset( $event['action'] ) ) {
                wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" No Action set, configuration error?' );
                continue;
            }

            if( $event['action'] == '__ignore' ) {
                wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" Ignore!' );
                break;
            }

            wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" Action: "' . $event['action'] . '"', 'Actions' );

            $this->_conf->loadConfig( 'event/' . $event['action'] . '.xml' );
            $actions    =   $this->_conf->getConfigValue( 'actions' );
            $this->_conf->clearConfigValue();

            foreach( $actions as $action ) {
                wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" Handler: "' . $action['handler'] . '"', 'Process' );
                $handler    =&  wbFactory::singleton( 'wbEventHandler_' . $action['handler'] );
                if( patErrorManager::isError( $handler ) ) {
                    return $handler;
                }
                $handler->setParams( $action['params'] );

                $result =   $handler->process( $e );
                if( patErrorManager::isError( $result ) ) {
                    return $result;
                }

                if( $handler->dropout() ) {
                    wbDebugger::addMsg( 'wbEventController', 'Event: "' .$id . '" Handler: "' . $action['handler'] . '"', 'Dropout' );
                    break;
                }
            }
            break;
        }
        return true;
    }
}
?>