<?
include($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
if (CModule::IncludeModule("iblock")){
	require_once($_SERVER["DOCUMENT_ROOT"]."/local/libs/icalendar/zapcallib.php");
	$currentYear = date("Y");
	$arEvents = array();
	$dbSection = CIblockSection::GetList(array(),array("IBLOCK_ID"=>"16","ACTIVE"=>"Y","NAME"=>$currentYear),false,array("ID"),false);
	if($arSection=$dbSection->GetNext()){
		$dbElements = CIBlockElement::GetList(array(),array("IBLOCK_ID"=>"16","ACTIVE"=>"Y","SECTION_ID"=>$arSection["ID"],">=DATE_ACTIVE_FROM" => array(false, ConvertTimeStamp(false, "FULL")),),false,false,array("*"));
		while($obElement = $dbElements->GetNextElement()){
			$arFields = $obElement->GetFields();
			$arProperties = $obElement->GetProperties();
			$arEvent = array();
			$arEvent["ID"] = $arFields["ID"];
			$arEvent["NAME"] = $arFields["NAME"];
			$arEvent["DATE"] = $arFields["ACTIVE_FROM"];
			if(!$arEvent["DATE"]){
				$arEvent["DATE"] = $arFields["DATE_CREATE"];
			}
			$arEvent["DATE"] = explode(" ",$arEvent["DATE"]);
			$arEvent["DATE"] = $arEvent["DATE"][0];
			$arEvent["DATE_START"] =  $arEvent["DATE"]." 00:00:00";
			$arEvent["DATE_END"] =  $arEvent["DATE"]." 23:59:59";
			$arEvent["DATE_START"] = date("Y-m-d H:i:s",MakeTimeStamp($arEvent["DATE_START"], "DD.MM.YYYY HH:MI:SS"));
			$arEvent["DATE_END"] = date("Y-m-d H:i:s",MakeTimeStamp($arEvent["DATE_END"], "DD.MM.YYYY HH:MI:SS"));
			$arEvent["DESCRIPTION"] = $arFields["PREVIEW_TEXT"];
			$arEvent["PROPERTIES"] = array();
			if($arProperties["CATEGORY"]["VALUE"]){
				$arEvent["PROPERTIES"][$arProperties["CATEGORY"]["ID"]]["NAME"] = $arProperties["CATEGORY"]["NAME"];
				$arEvent["PROPERTIES"][$arProperties["CATEGORY"]["ID"]]["VALUE"] = $arProperties["CATEGORY"]["VALUE"];
			}
			if($arProperties["ORGANIZER"]["VALUE"]){
				$arEvent["PROPERTIES"][$arProperties["ORGANIZER"]["ID"]]["NAME"] = $arProperties["ORGANIZER"]["NAME"];
				$arEvent["PROPERTIES"][$arProperties["ORGANIZER"]["ID"]]["VALUE"] = $arProperties["ORGANIZER"]["VALUE"];
			}				
			if($arProperties["DISCIPLINE"]["VALUE"]){
				$arEvent["PROPERTIES"][$arProperties["DISCIPLINE"]["ID"]]["NAME"] = $arProperties["DISCIPLINE"]["NAME"];
				$arEvent["PROPERTIES"][$arProperties["DISCIPLINE"]["ID"]]["VALUE"] = $arProperties["DISCIPLINE"]["VALUE"];
			}			
			$arEvents[] = $arEvent;
		}
	}
}
if(count($arEvents)){
			$icalobj = new ZCiCal();
		foreach($arEvents as $arEvent){
			$eventobj = new ZCiCalNode("VEVENT", $icalobj->curnode);
			$eventobj->addNode(new ZCiCalDataNode("SUMMARY:" . $arEvent["NAME"]));
			$eventobj->addNode(new ZCiCalDataNode("DTSTART:" . ZCiCal::fromSqlDateTime($arEvent["DATE_START"])));
			$eventobj->addNode(new ZCiCalDataNode("DTEND:" . ZCiCal::fromSqlDateTime($arEvent["DATE_END"])));
			$uid = date('Y-m-d-H-i-s') . $arEvent["ID"]."@foxlodge.ru";
			$eventobj->addNode(new ZCiCalDataNode("UID:" . $uid));
			$eventobj->addNode(new ZCiCalDataNode("DTSTAMP:" . ZCiCal::fromSqlDateTime()));
			$arEvent["DESCRIPTION"] = strip_tags($arEvent["DESCRIPTION"]);
			$arEvent["DESCRIPTION"] = html_entity_decode($arEvent["DESCRIPTION"]);
			foreach($arEvent["PROPERTIES"] as $property){
				$arEvent["DESCRIPTION"].="\n".$property["NAME"].":".$property["VALUE"];
			}			
			$eventobj->addNode(new ZCiCalDataNode("DESCRIPTION:" . ZCiCal::formatContent($arEvent["DESCRIPTION"])));
		}
		header('Content-Type: text/calendar; charset=utf-8');
		header('Content-Disposition: attachment; filename="cal.ics"');
		echo $icalobj->export();		
} else{
	$icalobj = new ZCiCal();
	header('Content-Type: text/calendar; charset=utf-8');
	header('Content-Disposition: attachment; filename="calendar.ics"');	 
	echo $icalobj->export();
}  
include($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/epilog_after.php");
?>