<?php
/*
* This file is part of PHP Copy/Paste Detector (PHPCPD).
*
* (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\PHPCPD;

class CodeClone
{
/**
* @var int Size of the clone (lines)
*/
private $size;

/**
* @var int Size of the clone (tokens)
*/
private $tokens;

/**
* @var CodeCloneFile[] Files with this code clone
*/
private $files = [];

/**
* @var string Unique ID of Code Duplicate Fragment
*/
private $id;

/**
* @var string Lines of the clone
*/
private $lines = '';

/**
* Constructor.
*
* @param CodeCloneFile $fileA
* @param CodeCloneFile $fileB
* @param int $size
* @param int $tokens
*/
public function __construct(CodeCloneFile $fileA, CodeCloneFile $fileB, $size, $tokens)
{
$this->addFile($fileA);
$this->addFile($fileB);

$this->size = $size;
$this->tokens = $tokens;
$this->id = \md5($this->getLines());
}

/**
* Add file with clone
*
* @param CodeCloneFile $file
*/
public function addFile(CodeCloneFile $file)
{
$id = $file->getId();

if (!isset($this->files[$id])) {
$this->files[$id] = $file;
}
}

/**
* Get files with clone
*
* @return CodeCloneFile[]
*/
public function getFiles()
{
return $this->files;
}

/**
* Returns the lines of the clone.
*
* @param string $indent
*
* @return string The lines of the clone
*/
public function getLines($indent = '')
{
if (empty($this->lines)) {
$file = \current($this->files);

$this->lines = \implode(
'',
\array_map(
function ($line) use ($indent) {
return $indent . $line;
},
\array_slice(
\file($file->getName()),
$file->getStartLine() - 1,
$this->size
)
)
);
}

return $this->lines;
}

/**
* @return string
*/
public function getId()
{
return $this->id;
}

/**
* @return int
*/
public function getSize()
{
return $this->size;
}

/**
* @return int
*/
public function getTokens()
{
return $this->tokens;
}
}