<?php
/*
* This file is part of the Version package.
*
* (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 SebastianBergmann;

/**
* @since Class available since Release 1.0.0
*/
class Version
{
/**
* @var string
*/
private $path;

/**
* @var string
*/
private $release;

/**
* @var string
*/
private $version;

/**
* @param string $release
* @param string $path
*/
public function __construct($release, $path)
{
$this->release = $release;
$this->path = $path;
}

/**
* @return string
*/
public function getVersion()
{
if ($this->version === null) {
if (count(explode('.', $this->release)) == 3) {
$this->version = $this->release;
} else {
$this->version = $this->release . '-dev';
}

$git = $this->getGitInformation($this->path);

if ($git) {
if (count(explode('.', $this->release)) == 3) {
$this->version = $git;
} else {
$git = explode('-', $git);

$this->version = $this->release . '-' . end($git);
}
}
}

return $this->version;
}

/**
* @param string $path
*
* @return bool|string
*/
private function getGitInformation($path)
{
if (!is_dir($path . DIRECTORY_SEPARATOR . '.git')) {
return false;
}

$process = proc_open(
'git describe --tags',
[
1 => ['pipe', 'w'],
2 => ['pipe', 'w'],
],
$pipes,
$path
);

if (!is_resource($process)) {
return false;
}

$result = trim(stream_get_contents($pipes[1]));

fclose($pipes[1]);
fclose($pipes[2]);

$returnCode = proc_close($process);

if ($returnCode !== 0) {
return false;
}

return $result;
}
}