<?php
/**
 * eGroupWare API - Applications
 *
 * @link http://www.egroupware.org
 * @author Mark Peters <skeeter@phpgroupware.org>
 * Copyright (C) 2001 Mark Peters
 * @license http://opensource.org/licenses/lgpl-license.php LGPL - GNU Lesser General Public License
 * @package api
 * @version $Id: class.applications.inc.php 25911 2008-08-18 09:00:19Z ralfbecker $
 */

/**
 * functions for managing and installing apps
 *
 * Author: skeeter
 */
class applications
{
	var $account_id;
	var $data = Array();
	/**
	 * Reference to the global db class
	 *
	 * @var egw_db
	 */
	var $db;
	var $table_name = 'egw_applications';
	/*var $public_functions = array(
		'list_methods' => True,
		'read'         => True
	);*/
	var $xmlrpc_methods = array();

	/**************************************************************************\
	* Standard constructor for setting $this->account_id                       *
	\**************************************************************************/

	/**
	 * standard constructor for setting $this->account_id
	 *
	 * @param $account_id account id
	 */
	function applications($account_id = '')
	{
		if (is_object($GLOBALS['egw_setup']) && is_object($GLOBALS['egw_setup']->db))
		{
			$this->db = $GLOBALS['egw_setup']->db;
		}
		else
		{
			$this->db = $GLOBALS['egw']->db;
		}

		$this->account_id = get_account_id($account_id);

		$this->xmlrpc_methods[] = array(
			'name'        => 'read',
			'description' => 'Return a list of applications the current user has access to'
		);
	}

	function NOT_list_methods($_type='xmlrpc')
	{
		/*
			This handles introspection or discovery by the logged in client,
			in which case the input might be an array.  The server always calls
			this function to fill the server dispatch map using a string.
		*/
		if (is_array($_type))
		{
			$_type = $_type['type'] ? $_type['type'] : $_type[0];
		}
		switch($_type)
		{
			case 'xmlrpc':
				$xml_functions = array(
					'read' => array(
						'function'  => 'read',
						'signature' => array(array(xmlrpcStruct)),
						'docstring' => lang('Returns struct of users application access')
					),
					'list_methods' => array(
						'function'  => 'list_methods',
						'signature' => array(array(xmlrpcStruct,xmlrpcString)),
						'docstring' => lang('Read this list of methods.')
					)
				);
				return $xml_functions;
				break;
			case 'soap':
				return $this->soap_functions;
				break;
			default:
				return array();
				break;
		}
	}

	/**************************************************************************\
	* These are the standard $this->account_id specific functions              *
	\**************************************************************************/

	/**
	 * read from repository
	 *
	 * private should only be called from withing this class
	 */
	function read_repository()
	{
		if (!isset($GLOBALS['egw_info']['apps']) ||	!is_array($GLOBALS['egw_info']['apps']))
		{
			$this->read_installed_apps();
		}
		$this->data = Array();
		if(!$this->account_id)
		{
			return False;
		}
		$apps = $GLOBALS['egw']->acl->get_user_applications($this->account_id);
		foreach($GLOBALS['egw_info']['apps'] as $app => $data)
		{
			if (isset($apps[$app]) && $apps[$app])
			{
				$this->data[$app] =& $GLOBALS['egw_info']['apps'][$app];
			}
		}
		return $this->data;
	}

	/**
	 * read from the repository
	 *
	 * pubic function that is used to determine what apps a user has rights to
	 */
	function read()
	{
		if (!count($this->data))
		{
			$this->read_repository();
		}
		return $this->data;
	}
	/**
	 * add an app to a user profile
	 *
	 * @discussion
	 * @param $apps array containing apps to add for a user
	 */
	function add($apps)
	{
		if(is_array($apps))
		{
			foreach($apps as $app)
			{
				$this->data[$app] =& $GLOBALS['egw_info']['apps'][$app];
			}
		}
		elseif(gettype($apps))
		{
			$this->data[$apps] =& $GLOBALS['egw_info']['apps'][$apps];
		}
		return $this->data;
	}
	/**
	 * delete an app from a user profile
	 *
	 * @discussion
	 * @param $appname appname to remove
	 */
	function delete($appname)
	{
		if($this->data[$appname])
		{
			unset($this->data[$appname]);
		}
		return $this->data;
	}
	/**
	 * update the array(?)
	 *
	 * @discussion
	 * @param $data update the repository array(?)
	 */
	function update_data($data)
	{
		$this->data = $data;
		return $this->data;
	}
	/**
	 * save the repository
	 *
	 * @discussion
	 */
	function save_repository()
	{
		$num_rows = $GLOBALS['egw']->acl->delete_repository("%%", 'run', $this->account_id);
		foreach($this->data as $app => $data)
		{
			if(!$this->is_system_enabled($app))
			{
				continue;
			}
			$GLOBALS['egw']->acl->add_repository($app,'run',$this->account_id,1);
		}
		return $this->data;
	}

	/**************************************************************************\
	* These are the non-standard $this->account_id specific functions          *
	\**************************************************************************/

	function app_perms()
	{
		if (!count($this->data))
		{
			$this->read_repository();
		}
		foreach ($this->data as $app => $data)
		{
			$apps[] = $this->data[$app]['name'];
		}
		return $apps;
	}

	function read_account_specific()
	{
		if (!is_array($GLOBALS['egw_info']['apps']))
		{
			$this->read_installed_apps();
		}
		if ($app_list = $GLOBALS['egw']->acl->get_app_list_for_id('run',1,$this->account_id))
		{
			foreach($app_list as $app)
			{
				if ($this->is_system_enabled($app))
				{
					$this->data[$app] =& $GLOBALS['egw_info']['apps'][$app];
				}
			}
		}
		return $this->data;
	}

	/**************************************************************************\
	* These are the generic functions. Not specific to $this->account_id       *
	\**************************************************************************/

	/**
	 * populate array with a list of installed apps
	 *
	 */
	function read_installed_apps()
	{
		foreach($this->db->select($this->table_name,'*','app_enabled != 0',__LINE__,__FILE__,false,'ORDER BY app_order ASC') as $row)
		{
			$title = $app_name = $row['app_name'];

			if (@is_array($GLOBALS['egw_info']['user']['preferences']) && ($t = lang($app_name)) != $app_name.'*')
			{
				$title = $t;
			}
			$GLOBALS['egw_info']['apps'][$app_name] = Array(
				'title'   => $title,
				'name'    => $app_name,
				'enabled' => True,
				'status'  => $row['app_enabled'],
				'id'      => (int)$row['app_id'],
				'order'   => (int)$row['app_order'],
				'version' => $row['app_version'],
				'index'   => $row['app_index'],
				'icon'    => $row['app_icon'],
				'icon_app'=> $row['app_icon_app'],
			);
		}
	}

	/**
	 * check if an app is enabled
	 *
	 * @param $appname name of the app to check for
	 */
	function is_system_enabled($appname)
	{
		if(!is_array($GLOBALS['egw_info']['apps']))
		{
			$this->read_installed_apps();
		}
		if ($GLOBALS['egw_info']['apps'][$appname]['enabled'])
		{
			return True;
		}
		else
		{
			return False;
		}
	}

	function id2name($id)
	{
		foreach($GLOBALS['egw_info']['apps'] as $appname => $app)
		{
			if((int)$app['id'] == (int)$id)
			{
				return $appname;
			}
		}
		return '';
	}

	function name2id($appname)
	{
		if(is_array($GLOBALS['egw_info']['apps'][$appname]))
		{
			return $GLOBALS['egw_info']['apps'][$appname]['id'];
		}
		return 0;
	}
}
