<?php

class CCleanCache extends TCleanMasterFunctions
{
	private $documentRoot;
	private $conn;

	const CACHE_TYPES = [
		'marked', 'managed', 'cache'
	];

	private $managedCache, $stackCache, $cache, $compositeCache;

	public function __construct()
	{
		$this->documentRoot   = Bitrix\Main\Application::getDocumentRoot();
		$this->conn           = Bitrix\Main\Application::getConnection();

		$this->cache          = '/bitrix/cache/';
		$this->managedCache   = '/bitrix/managed_cache/';
		$this->stackCache     = '/bitrix/stack_cache/';
		$this->compositeCache = '/bitrix/html_pages/';
	}

	/**
	 * @param array{onlyCache : array{'marked' : string} } $stepParams = []
	 *
	 * @return void
	 */
	public function CacheClear($stepParams = []): void
	{
		if (isset($stepParams['onlyCache'])) {
			if ($stepParams['onlyCache']['marked'] == 'Y') {
				$this->clearMarkedCache();
			}
			if ($stepParams['onlyCache']['managed'] == 'Y') {
				DeleteDirFilesEx($this->managed_cache); // управляемый кэш
			}
			if ($stepParams['onlyCache']['cache'] == 'Y') {
				DeleteDirFilesEx($this->cache); // управляемый кэш
			}
			return;
		}

		// all
		DeleteDirFilesEx($this->managed_cache); // управляемый кэш
		DeleteDirFilesEx($this->cache); // просто кэш
		DeleteDirFilesEx($this->stackCache); // джонни кэш
		$this->clearMarkedCache();

		$staticHtmlCache = \Bitrix\Main\Data\StaticHtmlCache::getInstance();
		$staticHtmlCache->deleteAll();
	}

	/**
	 * Тегированный кеш, помеченный на удаление
	 * @return int
	 * @throws \Bitrix\Main\DB\SqlQueryException
	 */
	private function getMarkedCacheCnt(): int
	{
		return (int)$this->conn->query("SELECT COUNT(*) AS CNT FROM b_cache_tag WHERE TAG='*'")->fetch()["CNT"];
	}
	private function getMarkedCacheSize(): float
	{
		$size = 0;
		$rs = $this->conn->query("SELECT RELATIVE_PATH FROM b_cache_tag WHERE TAG='*'");
		while ($ar = $rs->fetch()) {
			$size += $this->GetDirSize($this->documentRoot . $ar['RELATIVE_PATH']);
		}
		return $size;
	}
	private function clearMarkedCache(): void
	{
		$rs = $this->conn->query("SELECT ID,RELATIVE_PATH FROM b_cache_tag WHERE TAG='*'");
		while ($ar = $rs->fetch()) {
			DeleteDirFilesEx($ar['RELATIVE_PATH']);
			$this->conn->query('DELETE FROM b_cache_tag WHERE ID = ' . (int)$ar['ID']);
		}
	}

	public function GetDiagnosticData($step = false): bool
	{
		$_SESSION['cleanmaster']['diagnostic']['cache']['size'] = 0;

		$dirs = [
			$this->cache,
			$this->managedCache,
			$this->stackCache,
			$this->compositeCache,
		];

		foreach ($dirs as $dir) {
			if (file_exists($this->documentRoot . $dir)) {
				$_SESSION['cleanmaster']['diagnostic']['cache']['dirs'][$dir] = $this->GetDirSize($this->documentRoot . $dir);
				$_SESSION['cleanmaster']['diagnostic']['cache']['size']       += $_SESSION['cleanmaster']['diagnostic']['cache']['dirs'][$dir];
			}
		}
		$_SESSION['cleanmaster']['diagnostic']['cache']['marked'] = [
			'cnt'    => $this->getMarkedCacheCnt(),
			'size'   => $this->getMarkedCacheSize(),
		];
		return false;
	}
}