<?php
/**
 * Created by PhpStorm.
 * User: Fiber
 * Date: 2017.01.11.
 * Time: 12:27
 */

namespace EOG\Utils;


use Twig\Environment;
use Twig\Extension\CoreExtension;
use Twig\Extension\DebugExtension;
use Twig\Loader\FilesystemLoader;
use Twig\TwigFilter;
use Twig\TwigFunction;

class TwigFactory
{
	private const CACHE_DIR = SITE_ROOT . '/cache/twig-templates/';

	/**
	 * Visszatér egy beállított Twig_environment -el, amikbe már be van húzva a használt alap függvények
	 *
	 * @param array $fileSystemPaths
	 * @param array $twigEnvironmentOptions
	 *
	 * @return Environment
	 */
	public static function getEnvironment($fileSystemPaths = [], array $twigEnvironmentOptions = [])
	{
		$loader = null;

		if ($fileSystemPaths)
		{
			if (is_string($fileSystemPaths))
			{
				$fileSystemPaths = [$fileSystemPaths];
			}

			$loader = new FilesystemLoader($fileSystemPaths);
		}

		$twigEnvironmentOptions['cache'] = static::CACHE_DIR;
		$twigEnvironmentOptions['auto_reload'] = true;

		if (IS_DEV)
		{
			$twigEnvironmentOptions['debug'] = true;
		}

		$twigEnvironment = new Environment($loader, $twigEnvironmentOptions);

		if (IS_DEV)
		{
			$twigEnvironment->addExtension(new DebugExtension());
		}

		return self::addFunctions($twigEnvironment);
	}

	public static function addFunctions(Environment &$te)
	{

		return $te;
	}

	public static function clearFileCache()
	{
		$di = new \RecursiveDirectoryIterator(self::CACHE_DIR, \FilesystemIterator::SKIP_DOTS);
		$ri = new \RecursiveIteratorIterator($di, \RecursiveIteratorIterator::CHILD_FIRST);
		foreach ($ri as $file)
		{
			$file->isDir() ? rmdir($file) : unlink($file);
		}
		return true;
	}
}