<?

namespace Linkor\Redirectpro;

class Events
{
	public static function onBeforeElementUpdate($arFields)
	{
		$siteArr = GetAllSites();
		foreach ($siteArr as $arSite) {
			$configRoot = $arSite['DOC_ROOT_FULL'] . "/local/config/" . ID;
			$siteOptions = Options($configRoot . '/options.php');
			if ($siteOptions["track_ib"][$arFields["IBLOCK_ID"]] &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ACTIVE"] === "Y" &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ELEMENT"]) {

				$fromURL = namespace\Events::_getElementUrl(
					$arFields["ID"],
					$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ELEMENT"]
				);

				if ($fromURL) {
					$csvData = Select(true, $configRoot . "/upload_urls.csv", $configRoot . "/urls.csv");
					$csvData = array_filter($csvData, function ($row) use ($fromURL) {
						return $row[0] != $fromURL;
					});
					$csvData[] = [
						$fromURL, "/", "301"
					];
					Update([
						$arSite["LID"] . "_redirect_urls" => $csvData
					], $arSite["LID"]);
				}
			}
		}
	}

	public static function onAfterElementUpdate($arFields)
	{
		$siteArr = GetAllSites();
		foreach ($siteArr as $arSite) {
			$configRoot = $arSite['DOC_ROOT_FULL'] . "/local/config/" . ID;
			$siteOptions = Options($configRoot . '/options.php');
			if ($siteOptions["track_ib"][$arFields["IBLOCK_ID"]] &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ACTIVE"] === "Y" &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ELEMENT"]) {

				$toURL = namespace\Events::_getElementUrl(
					$arFields["ID"],
					$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ELEMENT"]
				);

				if ($toURL) {
					$csvData = Select(true, $configRoot . "/upload_urls.csv", $configRoot . "/urls.csv");
					$lastRow = array_pop($csvData);
					if ($lastRow[0] != $toURL) {
						$lastRow[1] = $toURL;
						$csvData[] = $lastRow;
						/** Check for loop redirect **/
						$csvData = array_filter($csvData, function ($row) use ($toURL) {
							return $row[0] != $toURL;
						});
					}
					Update([
						$arSite["LID"] . "_redirect_urls" => $csvData
					], $arSite["LID"]);
				}
			}
		}
	}

	public static function onBeforeSectionUpdate($arFields)
	{
		$siteArr = GetAllSites();
		foreach ($siteArr as $arSite) {
			$configRoot = $arSite['DOC_ROOT_FULL'] . "/local/config/" . ID;
			$siteOptions = Options($configRoot . '/options.php');
			if ($siteOptions["track_ib"][$arFields["IBLOCK_ID"]] &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ACTIVE"] === "Y" &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["SECTION"]) {

				$fromURL = namespace\Events::_getSectionUrl(
					$arFields["ID"],
					$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["SECTION"]
				);

				if ($fromURL) {
					$csvData = Select(true, $configRoot . "/upload_urls.csv", $configRoot . "/urls.csv");
					$csvData = array_filter($csvData, function ($row) use ($fromURL) {
						return $row[0] != $fromURL;
					});
					$csvData[] = [
						$fromURL, "/", "301"
					];
					$csvData[] = [
						$fromURL, "/", "301", "Y"
					];
					Update([
						$arSite["LID"] . "_redirect_urls" => $csvData
					], $arSite["LID"]);
				}
			}
		}
	}

	public static function onAfterSectionUpdate($arFields)
	{
		$siteArr = GetAllSites();
		foreach ($siteArr as $arSite) {
			$configRoot = $arSite['DOC_ROOT_FULL'] . "/local/config/" . ID;
			$siteOptions = Options($configRoot . '/options.php');
			if ($siteOptions["track_ib"][$arFields["IBLOCK_ID"]] &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ACTIVE"] === "Y" &&
				$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["ELEMENT"]) {

				$toURL = namespace\Events::_getSectionUrl(
					$arFields["ID"],
					$siteOptions["track_ib"][$arFields["IBLOCK_ID"]]["SECTION"]
				);

				if ($toURL) {
					$csvData = Select(true, $configRoot . "/upload_urls.csv", $configRoot . "/urls.csv");
					$regexRow = array_pop($csvData);
					$singleRow = array_pop($csvData);
					if ($singleRow[0] != $toURL) {
						/** Check for loop redirect **/
						$csvData = array_filter($csvData, function ($row) use ($toURL) {
							return $row[0] != $toURL && $row[0] != $toURL . "*";
						});
						$singleRow[1] = $toURL;
						$csvData[] = $singleRow;
						$regexRow[0] .= "*";
						$regexRow[1] = $toURL . "{1}";
						$csvData[] = $regexRow;
					}
					Update([
						$arSite["LID"] . "_redirect_urls" => $csvData
					], $arSite["LID"]);
				}
			}
		}
	}

	public static function _getElementUrl($elementID, $urlTpl)
	{
		$res = \CIBlockElement::GetList([], ["ID" => $elementID], false, false, ["DETAIL_PAGE_URL"]);
		$res->SetUrlTemplates($urlTpl);
		$res = $res->GetNext();

		return $res["DETAIL_PAGE_URL"];
	}

	public static function _getSectionUrl($sectionID, $urlTpl)
	{
		$res = \CIBlockSection::GetList([], ["ID" => $sectionID], false, false, ["SECTION_PAGE_URL"]);
		$res->SetUrlTemplates(false, $urlTpl);
		$res = $res->GetNext();

		return $res["SECTION_PAGE_URL"];
	}
}