<?php
	/**************************************************************************\
	* eGroupWare - iCalendar Parser                                            *
	* http://www.egroupware.org                                                *
	* Written by Lars Kneschke <lkneschke@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.              *
	\**************************************************************************/

	/* $Id$ */

	require_once PHPGW_SERVER_ROOT.'/infolog/inc/class.boinfolog.inc.php';
	require_once EGW_SERVER_ROOT.'/phpgwapi/inc/horde/Horde/iCalendar.php';

	class sifinfolog extends boinfolog
	{
		// array containing the result of the xml parser
		var $_extractedSIFData;
		
		// array containing the current mappings(task or note)
		var $_currentSIFMapping;
		
		// mappings for SIFTask to InfologTask
		var $_sifTaskMapping = array(
			'ActualWork'		=> '',
			'BillingInformation'	=> '',
			'Body'			=> 'info_des',
			'Categories'		=> '',
			'Companies'		=> '',
			'Complete'		=> '',
			'DateCompleted'		=> 'info_datecompleted',
			'DueDate'		=> 'info_enddate',
			'Importance'		=> 'info_priority',
			'IsRecurring'		=> '',
			'Mileage'		=> '',
			'PercentComplete'	=> 'info_percent',
			'ReminderSet'		=> '',
			'ReminderTime'		=> '',
			'Sensitivity'		=> 'info_access',
			'StartDate'		=> 'info_startdate',
			'Status'		=> 'info_status',
			'Subject'		=> 'info_subject',
			'TeamTask'		=> '',
			'TotalWork'		=> '',
			'RecurrenceType'	=> '',
			'Interval'		=> '',
			'MonthOfYear'		=> '',
			'DayOfMonth'		=> '',
			'DayOfWeekMask'		=> '',
			'Instance'		=> '',
			'PatternStartDate'	=> '',
			'NoEndDate'		=> '',
			'PatternEndDate'	=> '',
			'Occurrences'		=> '',
		);


		function startElement($_parser, $_tag, $_attributes) {
		}

		function endElement($_parser, $_tag) {
			if(!empty($this->_currentSIFMapping[$_tag])) {
				$this->_extractedSIFData[$this->_currentSIFMapping[$_tag]] = $this->sifData;
			}
			unset($this->sifData);
		}
		
		function characterData($_parser, $_data) {
			$this->sifData .= $_data;
		}
		
		function siftoegw($_sifData, $_sifType) {
			$sysCharSet	= $GLOBALS['egw']->translation->charset();
			$sifData	= base64_decode($_sifData);

			#$tmpfname = tempnam('/tmp/sync/contents','sift_');

			#$handle = fopen($tmpfname, "w");
			#fwrite($handle, $sifData);
			#fclose($handle);

			$this->_currentSIFMapping = $this->_sifTaskMapping;
			$this->xml_parser = xml_parser_create('UTF-8');
			xml_set_object($this->xml_parser, $this);
			xml_parser_set_option($this->xml_parser, XML_OPTION_CASE_FOLDING, false);
			xml_set_element_handler($this->xml_parser, "startElement", "endElement");
			xml_set_character_data_handler($this->xml_parser, "characterData");
			$this->strXmlData = xml_parse($this->xml_parser, $sifData);
			if(!$this->strXmlData) {
				error_log(sprintf("XML error: %s at line %d",
					xml_error_string(xml_get_error_code($this->xml_parser)),
					xml_get_current_line_number($this->xml_parser)));
				return false;
			}

			if(!array($this->_extractedSIFData)) {
				return false;
			}

			switch($_sifType) {
				case 'task':
					$taskData	= array();
					$vcal		= &new Horde_iCalendar;
					
					$taskData['info_type'] = 'task';
					
					foreach($this->_extractedSIFData as $key => $value) {
						$value = $GLOBALS['egw']->translation->convert($value, 'utf-8', $sysCharSet);
						switch($key) {
							case 'info_access':
								$taskData[$key] = ((int)$value > 0) ? 'private' : 'public';
								break;

							case 'info_datecompleted':
							case 'info_enddate':
							case 'info_startdate':
								if(!empty($value)) {
									$taskData[$key] = $vcal->_parseDateTime($value);
									// somehow the client always deliver a timestamp about 3538 seconds, when no startdate set.
									if($taskData[$key] < 10000)
										$taskData[$key] = '';
								} else {
									$taskData[$key] = '';
								}
								break;
								

							case 'info_priority':
								$taskData[$key] = (int)$value;
								break;
								
							case 'info_status':
								$taskData[$key] = ((int)$value == 2) ? 'done' : 'ongoing';
								switch($value) {
									case '0':
										$taskData[$key] = 'not-started';
										break;
									case '1':
										$taskData[$key] = 'ongoing';
										break;
									case '2':
										$taskData[$key] = 'done';
										break;
									case '4':
										$taskData[$key] = 'cancelled';
										break;
									default:
										$taskData[$key] = 'ongoing';
										break;
								}
								break;
								
							default:
								$taskData[$key] = $value;
								break;
						}
					}
					
					return $taskData;
					break;

				default:
					return false;
			}
		}
		
		function searchSIF($_sifData, $_sifType) {
			if(!$egwData = $this->siftoegw($_sifData, $_sifType)) {
				return false;
			}

			$filter = array('col_filter' => $egwData);
			if($foundItems = $this->search($filter)) {
				if(count($foundItems) > 0) {
					$itemIDs = array_keys($foundItems);
					return $itemIDs[0];
				}
			}
			
			return false;
		}
		
		function addSIF($_sifData, $_id, $_sifType) {

			if(!$egwData = $this->siftoegw($_sifData, $_sifType)) {
				return false;
			}

			if($_id > 0)
				$egwData['info_id'] = $_id;

			$egwID = $this->write($egwData, false);

			return $egwID;
		}
		
		function getSIF($_id, $_sifType) {
			switch($_sifType) {
				case 'task':
					if($taskData = $this->read($_id)) {
						$sysCharSet	= $GLOBALS['egw']->translation->charset();
						$vcal		= &new Horde_iCalendar;

						$sifTask = '<task>';

						foreach($this->_sifTaskMapping as $sifField => $egwField)
						{
							if(empty($egwField)) continue;
		
							$value = $GLOBALS['egw']->translation->convert($taskData[$egwField], $sysCharSet, 'utf-8');

							switch($sifField) {
								case 'DateCompleted':
								case 'DueDate':
								case 'StartDate':
									if(!empty($value)) {
										$value = $vcal->_exportDateTime($value);
									}
									$sifTask .= "<$sifField>$value</$sifField>";							
									break;
							
								case 'Importance':
									if($value > 3) $value = 3;
									$sifTask .= "<$sifField>$value</$sifField>";
									break;

								case 'Sensitivity':
									$value = ($value == 'private' ? '2' : '0');
									$sifTask .= "<$sifField>$value</$sifField>";							
									break;
							
								case 'Status':
									switch($value) {
										case 'cancelled':
											$value = '4';
											break;
										case 'done':
											$value = '2';
											break;
										case 'not-started':
											$value = '0';
											break;
										case 'ongoing':
											$value = '1';
											break;
										default:
											$value = 1;
											break;
									}
									$sifTask .= "<$sifField>$value</$sifField>";							
									break;
							
								default:
									$sifTask .= "<$sifField>$value</$sifField>";
									break;
							}
						}
					
						$sifTask .= '<RecurrenceType>1</RecurrenceType>
						<Interval>1</Interval>
						<MonthOfYear>0</MonthOfYear>
						<DayOfMonth>0</DayOfMonth>
						<DayOfWeekMask>4</DayOfWeekMask>
						<Instance>0</Instance>
						<PatternStartDate>20060320T230000Z</PatternStartDate>
						<NoEndDate>1</NoEndDate>
						<PatternEndDate></PatternEndDate>
						<Occurrences>10</Occurrences></task>';
						#error_log($sifTask);
/*						return base64_encode("<task>
						<ActualWork>0</ActualWork>
						<BillingInformation></BillingInformation>
						<Body></Body>
						<Categories></Categories>
						<Companies></Companies>
						<Complete>0</Complete>
						<DateCompleted></DateCompleted>
						<DueDate></DueDate>
						<Importance>1</Importance>
						<IsRecurring>0</IsRecurring>
						<Mileage></Mileage>
						<PercentComplete>0</PercentComplete>
						<ReminderSet>0</ReminderSet>
						<ReminderTime></ReminderTime>
						<Sensitivity>0</Sensitivity>
						<StartDate>45001231T230000Z</StartDate>
						<Status>3</Status>
						<Subject>TARAAA3</Subject>
						<TeamTask>0</TeamTask>
						<TotalWork>0</TotalWork>
						<RecurrenceType>1</RecurrenceType>
						<Interval>1</Interval>
						<MonthOfYear>0</MonthOfYear>
						<DayOfMonth>0</DayOfMonth>
						<DayOfWeekMask>4</DayOfWeekMask>
						<Instance>0</Instance>
						<PatternStartDate>20060320T230000Z</PatternStartDate>
						<NoEndDate>1</NoEndDate>
						<PatternEndDate></PatternEndDate>
						<Occurrences>10</Occurrences>
						</task>
						");*/
						return base64_encode($sifTask);
					}
					break;
				
				default;
					return false;
			}

		}

		function exportVTODO($_taskID, $_version)
		{
			$taskData = $this->read($_taskID);

			$taskData = $GLOBALS['egw']->translation->convert($taskData,$GLOBALS['egw']->translation->charset(),'UTF-8');
			
			//_debug_array($taskData);
			
			$taskGUID = $GLOBALS['phpgw']->common->generate_uid('infolog_task',$_taskID);
			
			$vcal = &new Horde_iCalendar;
			$vcal->setAttribute('VERSION',$_version);
			$vcal->setAttribute('METHOD','PUBLISH');
			
			$vevent = Horde_iCalendar::newComponent('VTODO',$vcal);
			
			$options = array();
			
			$vevent->setAttribute('SUMMARY',$taskData['info_subject']);
			$vevent->setAttribute('DESCRIPTION',$taskData['info_des']);
			if($taskData['info_startdate'])
				$vevent->setAttribute('DTSTART',$taskData['info_startdate']);
			if($taskData['info_enddate'])
				$vevent->setAttribute('DUE',$taskData['info_enddate']);
			$vevent->setAttribute('DTSTAMP',time());
			$vevent->setAttribute('CREATED',$GLOBALS['phpgw']->contenthistory->getTSforAction($eventGUID,'add'));
			$vevent->setAttribute('LAST-MODIFIED',$GLOBALS['phpgw']->contenthistory->getTSforAction($eventGUID,'modify'));
			$vevent->setAttribute('UID',$taskGUID);
			$vevent->setAttribute('CLASS',(($taskData['info_access'] == 'public')?'PUBLIC':'PRIVATE'));
			$vevent->setAttribute('STATUS',(($taskData['info_status'] == 'completed')?'COMPLETED':'NEEDS-ACTION'));
			// 3=urgent => 1, 2=high => 2, 1=normal => 3, 0=low => 4
			$vevent->setAttribute('PRIORITY',4-$taskData['info_priority']);

			#$vevent->setAttribute('TRANSP','OPAQUE');
			# status
			# ATTENDEE
			
			$options = array('CHARSET' => 'UTF-8','ENCODING' => 'QUOTED-PRINTABLE');
			$vevent->setParameter('SUMMARY', $options);
			$vevent->setParameter('DESCRIPTION', $options);
			
			$vcal->addComponent($vevent);
			
			#print "<pre>";
			#print $vcal->exportvCalendar();
			#print "</pre>";
			
			return $vcal->exportvCalendar();
		}
		
		function importVTODO(&$_vcalData, $_taskID=-1)
		{
			$botranslation  = CreateObject('phpgwapi.translation');
			
			$vcal = &new Horde_iCalendar;
			if(!$vcal->parsevCalendar($_vcalData))
			{
				return FALSE;
			}
			$components = $vcal->getComponents();
			if(count($components) > 0)
			{
				$component = $components[0];
				if(is_a($component, 'Horde_iCalendar_vtodo'))
				{
					if($_taskID>0)
						$taskData['info_id'] = $_taskID;
					
					foreach($component->_attributes as $attributes)
					{
						#print $attributes['name'].' - '.$attributes['value'].'<br>';
						#$attributes['value'] = $GLOBALS['egw']->translation->convert($attributes['value'],'UTF-8');
						switch($attributes['name'])
						{
							case 'CLASS':
								$taskData['info_access']		= strtolower($attributes['value']);
								break;
							case 'DESCRIPTION':
								$taskData['info_des']			= $attributes['value'];
								break;
							case 'DUE':
								$taskData['info_enddate']		= $attributes['value'];
								break;
							case 'DTSTART':
								$taskData['info_startdate']		= $attributes['value'];
								break;
							case 'PRIORITY':
								// 1 => 3=urgent, 2 => 2=high, 3 => 1=normal, 4 => 0=low
								if (1 <= $attributes['value'] && $attributes['value'] <= 4)
								{
									$taskData['info_priority']	= 4 - $attributes['value'];
								}
								else
								{
									$taskData['info_priority']	= 1;	// default = normal
								}
								break;
							case 'STATUS':
								$taskData['info_status']		= (strtolower($attributes['value']) == 'completed') ? 'done' : 'ongoing';
								break;
							case 'SUMMARY':
								$taskData['info_subject']		= $attributes['value'];
								break;
						}
					}
					#_debug_array($eventData);exit;
					return $this->write($taskData);
				}
			}
			
			return FALSE;
		}
		
		
	}
?>