<?php
/**
* Class that represents profiler output in CSV-file format
*
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
namespace Magento\Framework\Profiler\Driver\Standard\Output;

use Magento\Framework\Profiler\Driver\Standard\AbstractOutput;
use Magento\Framework\Profiler\Driver\Standard\Stat;

class Csvfile extends AbstractOutput
{
const DEFAULT_FILEPATH = '/var/log/profiler.csv';

/**
*
* @var string
*/
protected $_filePath;

/**
* @var string
*/
protected $_delimiter;

/**
* @var string
*/
protected $_enclosure;

/**
* Constructor
*
* @param array|null $config
*/
public function __construct(array $config = null)
{
parent::__construct($config);
$this->_filePath = $this->_parseFilePath($config);
$this->_delimiter = isset($config['delimiter']) ? $config['delimiter'] : ',';
$this->_enclosure = isset($config['enclosure']) ? $config['enclosure'] : '"';
}

/**
* Parses file path
*
* @param array|null $config
* @return string
*/
protected function _parseFilePath(array $config = null)
{
$result = isset($config['filePath']) ? $config['filePath'] : self::DEFAULT_FILEPATH;
if (isset($config['baseDir'])) {
$result = rtrim($config['baseDir'], '/') . '/' . ltrim($result, '/');
}
return $result;
}

/**
* Write profiling results to CSV-file
*
* @param Stat $stat
* @return void
* @throws \RuntimeException if output file cannot be opened
*/
public function display(Stat $stat)
{
$fileHandle = fopen($this->_filePath, 'w');
if (!$fileHandle) {
throw new \RuntimeException(sprintf('Can not open a file "%s".', $this->_filePath));
}

$lockRequired = strpos($this->_filePath, 'php://') !== 0;
$isLocked = false;
while ($lockRequired && !$isLocked) {
$isLocked = flock($fileHandle, LOCK_EX);
}
$this->_writeFileContent($fileHandle, $stat);
if ($isLocked) {
flock($fileHandle, LOCK_UN);
}
fclose($fileHandle);
}

/**
* Write content into an opened file handle
*
* @param resource $fileHandle
* @param Stat $stat
* @return void
*/
protected function _writeFileContent($fileHandle, Stat $stat)
{
foreach ($this->_getTimerIds($stat) as $timerName) {
$row = [];
foreach ($this->_columns as $column) {
$row[] = $this->_renderColumnValue($stat->fetch($timerName, $column), $column);
}
fputcsv($fileHandle, $row, $this->_delimiter, $this->_enclosure);
}
}
}