<?PHP
/**
 * Site admin user interface
 * 
 *
 * @author gERD Schaufelberger <gerd@exit0.net>
 * @copyright 2004 by gERD Schaufelberger
 * @package wombat
 * @subpackage admin
 */
 
/**
 * admin interface
 *
 *
 * @version 0.1.0
 * @package wombat
 * @subpackage Admin
 */
class wbAdmin {
   /**
	* patTemplate object
	* @var	object	$_tmpl
	*/
	var	$_tmpl;
	
   /**
	* patSession object
	* @var	object	$_sess
	*/
	var	$_sess;
	
   /**
	* wbAuth object
	* @var	object	$_auth
	*/
	var	$_auth;
	
   /**
	* request variables
	* @var	array	$_request
	*/
	var	$_request = array();
	
   /**
	* store main config array
	* @var	array	$_config 
	*/
	var	$_config = array();
	
   /**
	* store main config array
	* @var	array	$_config 
	*/
	var	$_configAdmin = array();
	
   /**
	* current application
	* @var	string	$_app
	*/
	var	$_app = 'Welcome';
	
   /**
	* application meta info
	* @var	array	$_appInfo
	*/
	var	$_appInfo = array();
	
   /**
	* application menu items
	* @var	array	$_appMenu
	*/
	var	$_appMenu = array();
	
   /**
	* constructor
	*
	* @access public
	*/
    function __construct() {
        // load tools
		$this->_sess	=&	wbFactory::singleton( 'patSession' );
		$params   = array( 
                    'tmplDir'   =>  wbFactory::getParam( 'systemDir' ) . '/'. wbFactory::getParam( 'adminDir' ) . '/templates'
                   );
  		$this->_tmpl	=&	wbFactory::singleton( 'patTemplate', $params );

  		// recieve main config
		$this->_config	=&	wbFactory::getParam( 'config' );
		
		// load admin config
		$conf =&  wbFactory::singleton( 'patConfiguration' );
		$conf->loadCachedConfig( 'admin.xml' );
		$this->_configAdmin   =   $conf->getConfigValue();
		
		// get request variables
		$this->_request   =	$_GET;
		$this->_request   =	array_merge( $this->_request, $_POST );
		$this->_request   =	array_merge( $this->_request, $_FILES );
		
        // select application path
		if( isset( $this->_request['app'] ) ) {
    	   $this->_app       =   $this->_request['app'];
		}
		
        // run user authentication module first - this may affect the session-id!
        $params =   array( 'config' => $this->_configAdmin['auth'] );
        $this->_auth   =&  wbFactory::singleton( 'wbAuth', $params );
        
        // load meta data
        $menuDir   =   wbFactory::getParam( 'baseDir' ) 
                        . '/' . wbFactory::getParam( 'varDir' )
                        . '/admin/menu';
                        
        $this->_appInfo   =   unserialize( file_get_contents( $menuDir . '/info.ser' ) );
        $this->_appMenu   =   unserialize( file_get_contents( $menuDir . '/menu.ser' ) );
        
        wbFactory::includeClass( 'wbJSTools' );
    }

   /**
	* constructor wrapper for PHP4
	*
	* @access public
	* @see __construct()
	*/
    function wbAdmin() {
		$this->__construct();
    }
        
   /**
	* run admin interface
	*
	* @access public
	* @return boolean true on success
	*/
	function process() {
        // get applcation content
        $appPath        =   explode( '/', $this->_app );
        
        if( !$this->_auth->isAuthenticated() ) {
            if( $appPath[0] != 'Login' )  {
                $this->_app     =   'Login';
                $appPath        =   array( 'Login' );
            }
            wbDebugger::addMsg( WBSITE_DEBUG_SECTION, 'User not authenticated', 'Auth' );
        }

        if( !isset( $this->_appInfo[$appPath[0] ] ) ) {
            $appPath    =   array( 'login' );
        }
        
        wbDebugger::addMsg( WBSITE_DEBUG_SECTION, $this->_app, 'Application' );

        $appHandler     =   array_shift( $appPath );
        $application    =&  wbFactory::singleton( 'wbAdminApp_' . $appHandler );
        
        if( patErrorManager::isError( $application ) ) {
            // exit programme!
            patErrorManager::raiseError(
                'wbAdmin:1',
                'Processing failed!',
                'Could not load application: "' . $appHandler . '"'
                );
            return false;
        }

        // run applicattion
        $application->setConfig( $this->_configAdmin );
        $application->setRequest( $this->_request );
        
        // add global template variables
        $this->_addGlobalContent( $application );

        $res   =   $application->process( $appPath );
        if( patErrorManager::isError( $res ) ) {
            return $res;
        }
        wbDebugger::addMsg( WBSITE_DEBUG_SECTION, wbDebugger::sprint_r( $this->_request ), 'Request' );

	    if( $this->_sess->isNew() ) {
            wbDebugger::addMsg( WBSITE_DEBUG_SECTION, 'New session started', 'Session' );
	    }
	    else {
            wbDebugger::addMsg( WBSITE_DEBUG_SECTION, $this->_sess->getCounter() . ' requests', 'Session' );
	    }

	    // add messages
        $msg        =   $application->getMsg();
        if( !empty( $msg ) ) {
            $this->_tmpl->readTemplatesFromFile( 'msg.tmpl' );
            $this->_tmpl->addVar( 'msg_entry', 'msg', $msg );
            
            $this->_tmpl->addGlobalVar( 'msg', $this->_tmpl->getParsedTemplate( 'msg' ) );
        }
        
        // some applications don't need surrounding template
        $fullScreen =   $application->isFullscreen();
        
        $html       =   $application->getHtml();
        if( patErrorManager::isError( $html ) ) {
            patErrorManager::raiseError(
                'wbAdmin:3',
                'Processing failed!',
                'Could not get html from application: "' . $appHandler . '"'
                );
            return false;
        }
        
        if( $fullScreen ) {
            echo $html;
            if( wbDebugger::isActive() ) {
                wbDebugger::printMsg();
            }
            return true;
        }
        
        $this->_tmpl->readTemplatesFromInput( 'page.tmpl' );
        
        // build menu content
        $menu   =   $this->_getMenuHtml( $application );
        if( patErrorManager::isError( $menu ) ) {
            return $menu;
        }

        $this->_tmpl->addVar( 'page', 'MENU', $menu );
        $this->_tmpl->addVar( 'page', 'APPLICATION', $html );
	   
        $this->_insertJavascript();
        $this->_tmpl->displayParsedTemplate( 'page' );
        if( wbDebugger::isActive() ) {
            wbDebugger::printMsg();
        }
        return true;
	}

   /**
	* load menu and transform to html
	*
	* @access private
    * æparam object $application link to running application
	* @return string $html parsed template
	*/
    function _getMenuHtml( &$application ) {
        $appPath        =   explode( '/', $this->_app );
        
        $this->_tmpl->readTemplatesFromInput( 'menu.tmpl' );
        
        $menu   =   $this->_configAdmin['menu'];
        for( $i = 0; $i < count( $menu ); ++$i ) {
            $menu[$i]['state']  =   '_none_';
            
            foreach( $this->_appInfo[$menu[$i]['app'] ] as $key => $value ) {
                $menu[$i][$key] =   $value;
            }

            //  add submenu
            $submenu    =   $this->_appMenu[$appPath[0]];
            
            if( $appPath[0] == $menu[$i]['app'] ) {
            
                // try to load dynamic submenu
                if( empty( $submenu ) ) {
                    $this->_appMenu[$appPath[0]]    =   $application->getMenu();
                    $submenu                        =   $this->_appMenu[$appPath[0]];
                }
                
                if( isset( $appPath[1] ) ) {
                    
                    for( $j = 0; $j < count( $submenu ); ++$j ) {
                        if( $appPath[1] == $submenu[$j]['name'] ) {
                            $submenu[$j]['state']   =   'selected';
                        }
                    }
                }

                $this->_tmpl->addRows( 'appmenu_entry', $submenu );
                $menu[$i]['appmenu']    =   $this->_tmpl->getParsedTemplate( 'appmenu_entry' );
                $menu[$i]['state']      =   'selected';
            }
        }
        
        $this->_tmpl->addRows( 'menu_entry', $menu );
        return $this->_tmpl->getParsedTemplate( 'menu' );
    }
	
   /**
    * add javascript to template
	*
	* @access private
	* @return boolean $result true on success
	*/
    function _insertJavascript() {
        $code   =   wbJSTools::getCode();
        $this->_tmpl->addGlobalVar( 'javascript_code', $code['code'] );
        $this->_tmpl->addGlobalVar( 'javascript_onload', $code['onload'] );
        
        return true;
    }
	
   /**
	* insert system vars to templates
	*
	* @access protected
    * @param object $application link to running application
	* @return boolean $result true on success
	*/
    function _addGlobalContent( &$application ) {
		$proc     =   explode( '/', $this->_app );
		
		$title    =   $this->_appInfo[$proc[0]]['title'];
		$brief    =   $this->_appInfo[$proc[0]]['brief'];
		$parent   =   '';
		
		if( count( $proc ) > 1 ) {
		    $parent   =   $title;
            
            //  try to load submenu from application
            if( empty( $this->_appMenu[$proc[0]] ) ) {
                $this->_appMenu[$proc[0]]   =   $application->getMenu();
            }

            if( !is_array( $this->_appMenu[$proc[0]] ) ) {
                $this->_appMenu[$proc[0]]   =   array();
            }
            
		    foreach( $this->_appMenu[$proc[0]] as $mi ) {
		        if( $mi['name'] == $proc[1] ) {
		            $title    =   $mi['title'];
		            $brief    =   $mi['brief'];
		        }
		    }
		}
		
        // add some global data
		$globals	=	array( 
		                'url'         => $this->_config['url'],
		                'app'         => $this->_app,
		                'app_title'   => $title,
		                'app_brief'   => $brief,
		                'app_parent'  => $parent,
		                'proc'        => $proc[0],
		                'proc_title'  => $this->_appInfo[$proc[0]]['title'],
		                'proc_brief'  => $this->_appInfo[$proc[0]]['brief'],
						'self'		  => $_SERVER['PHP_SELF'] . '?' . $this->_sess->getQueryString(),
						'sess_name'	  => $this->_sess->getName(),
						'sess_id'     => $this->_sess->getId(),
						'request_get' => ''
					);

        // add global template variables
		$get	=	array();
		foreach( $_GET as $key => $value ) {
		    if( isset( $globals[$key] ) ) {
		        continue;
		    }
			array_push( $get, $key . '=' . $value );
		}
		$globals['request_get']   =   implode( '&amp;', $get );
		
		$this->_tmpl->addGlobalVars( $globals );
		
		// add user data
		if( $this->_auth->isAuthenticated() ) {
  		    $this->_tmpl->addGlobalVars( $this->_auth->getUserData(), 'user_' );
		}
		
		return true;
    }
}
?>