<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace PHPUnit\Runner;

use SebastianBergmann\Version as VersionId;

/**
* This class defines the current version of PHPUnit.
*/
class Version
{
private static $pharVersion;
private static $version;

/**
* Returns the current version of PHPUnit.
*
* @return string
*/
public static function id()
{
if (self::$pharVersion !== null) {
return self::$pharVersion;
}

if (self::$version === null) {
$version = new VersionId('6.5.14', \dirname(\dirname(__DIR__)));
self::$version = $version->getVersion();
}

return self::$version;
}

/**
* @return string
*/
public static function series()
{
if (\strpos(self::id(), '-')) {
$version = \explode('-', self::id())[0];
} else {
$version = self::id();
}

return \implode('.', \array_slice(\explode('.', $version), 0, 2));
}

/**
* @return string
*/
public static function getVersionString()
{
return 'PHPUnit ' . self::id() . ' by Sebastian Bergmann and contributors.';
}

/**
* @return string
*/
public static function getReleaseChannel()
{
if (\strpos(self::$pharVersion, '-') !== false) {
return '-nightly';
}

return '';
}
}