<?php
	/**************************************************************************\
	* eGroupWare - Preferences                                                 *
	* http://www.egroupware.org                                                *
	* --------------------------------------------                             *
	*  This program 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 2 of the License, or (at your  *
	*  option) any later version.                                              *
	\**************************************************************************/

	/* $Id$ */

	class bosettings
	{
		var $xmlrpc = False;
		var $session_data = array();
		var $settings = array();
		var $prefs = array();
		var $appname = '';
		var $debug = False;

		var $public_functions = array(
			'_read' => True,
			'process_array' => True
		);

		var $xml_functions  = array();
		var $xmlrpc_methods = array();
		var $soap_functions = array(
			'_read' => array(
				'in'  => array('int','int','struct','string','int'),
				'out' => array('array')
			),
			'process_array' => array(
				'in'  => array('int','struct'),
				'out' => array('array')
			)
		);

		function bosettings($appname='')
		{
			$this->xmlrpc = @is_object($GLOBALS['server']) && $GLOBALS['server']->last_method;
			$this->session_data = $GLOBALS['egw']->session->appsession('session_data','preferences');

			if($appname)
			{
				$this->call_hook($appname);
			}
		}

		function save_session($appname,$type,$show_help,$prefix)
		{
			$GLOBALS['egw']->session->appsession('session_data','preferences',array(
				'type'      => $type,	// save our state in the app-session
				'show_help' => $show_help,
				'prefix'    => $prefix,
				'appname'   => $appname		// we use this to reset prefix on appname-change
			));
		}

		function call_hook($appname)
		{
			$this->appname = $appname;
			if(!$GLOBALS['egw']->hooks->single('settings',$this->appname))
			{
				return False;
			}
			$this->settings = array_merge($this->settings,$GLOBALS['settings']);

			$GLOBALS['egw']->translation->add_app($this->appname);
			if($this->appname != 'preferences')
			{
				$GLOBALS['egw']->translation->add_app('preferences');	// we need the prefs translations too
			}

			/* Remove ui-only settings */
			if($this->xmlrpc)
			{
				foreach($this->settings as $key => $valarray)
				{
					if(!$valarray['xmlrpc'])
					{
						unset($this->settings[$key]);
					}
				}
			}
			else
			{
				/* Here we include the settings hook file for the current template, if it exists.
				   This is not handled by the hooks class and is only valid if not using xml-rpc.
				 */
				$tmpl_settings = EGW_TEMPLATE_DIR . '/hook_settings.inc.php';
				if($this->appname == 'preferences' && file_exists($tmpl_settings))
				{
					include($tmpl_settings);
					$this->settings = array_merge($this->settings,$GLOBALS['settings']);
				}
			}
			if($this->debug)
			{
			//	_debug_array($this->settings);
			}
			return True;
		}

		function _read($app,$prefix,$type='user')
		{
			switch($type)	// set up some class vars to be used when processing the hooks
			{
				case 'forced':
					$this->prefs = &$GLOBALS['egw']->preferences->forced[$this->check_app()];
					break;
				case 'default':
					$this->prefs = &$GLOBALS['egw']->preferences->default[$this->check_app()];
					break;
				default:
					$this->prefs = &$GLOBALS['egw']->preferences->user[$this->check_app()];
					// use prefix if given in the url, used for email extra-accounts
					if($prefix != '')
					{
						$prefix_arr = explode('/',$prefix);
						foreach($prefix_arr as $pre)
						{
							$this->prefs = &$this->prefs[$pre];
						}
					}
			}
			if($this->debug)
			{
				echo 'Preferences array:' . "\n";
				_debug_array($this->prefs);
			}
		}

		function _write($appname,$prefix,$type='user')
		{
		}

		function process_array(&$repository,$array,$notifies,$type,$prefix='')
		{
			//_debug_array($repository);
			$appname = $this->check_app();
			$prefs = &$repository[$appname];

			if($prefix != '')
			{
				$prefix_arr = explode('/',$prefix);
				foreach($prefix_arr as $pre)
				{
					$prefs = &$prefs[$pre];
				}
			}
			unset($prefs['']);
			//_debug_array($array);exit;
			while(is_array($array) && list($var,$value) = each($array))
			{
				if(isset($value) && $value != '' && $value != '**NULL**')
				{
					if(is_array($value))
					{
						$value = $value['pw'];
						if(empty($value))
						{
							continue;	// dont write empty password-fields
						}
					}
					$prefs[$var] = stripslashes($value);

					if($notifies[$var])	// need to translate the key-words back
					{
						$prefs[$var] = $GLOBALS['egw']->preferences->lang_notify($prefs[$var],$notifies[$var],True);
					}
				}
				else
				{
					unset($prefs[$var]);
				}
			}
			//echo "prefix='$prefix', prefs=<pre>"; print_r($repository[$_appname]); echo "</pre>\n";

			// the following hook can be used to verify the prefs
			// if you return something else than False, it is treated as an error-msg and
			// displayed to the user (the prefs are not saved)
			//
			if($error = $GLOBALS['egw']->hooks->single(array(
				'location' => 'verify_settings',
				'prefs'    => $repository[$appname],
				'prefix'   => $prefix,
				'type'     => $type
				),
				$appname
			))
			{
				return $error;
			}

			$GLOBALS['egw']->preferences->save_repository(True,$type);

			return False;
		}

		function check_app()
		{
			if($this->appname == 'preferences')
			{
				return 'common';
			}
			else
			{
				return $this->appname;
			}
		}

		/* TODO these need work */
		function 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,xmlrpcString,xmlrpcString,xmlrpcString)),
							'docstring' => lang('Read prefs for the specified application.')
						),
						'write' => array(
							'function'  => 'process_array',
							'signature' => array(array(xmlrpcStruct,xmlrpcStruct,xmlrpcStruct,xmlrpcStruct,xmlrpcString,xmlrpcString)),
							'docstring' => lang('Write prefs for the specified application.')
						)
					);
					return $xml_functions;
					break;
				case 'soap':
					return $this->soap_functions;
					break;
				default:
					return array();
					break;
			}
		}
	}