<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/

namespace Magento\Framework\Config\Data;

/**
* Data transfer object to store config data for config options
* @api
* @since 100.0.2
*/
class ConfigData
{
/**
* File key
*
* @var string
*/
private $fileKey;

/**
* Data
*
* @var array
*/
private $data = [];

/**
* Override previous config options when save
*
* @var bool
*/
private $overrideWhenSave = false;

/**
* Constructor
*
* @param string $fileKey
*/
public function __construct($fileKey)
{
$this->fileKey = $fileKey;
}

/**
* Gets File Key
*
* @return string
*/
public function getFileKey()
{
return $this->fileKey;
}

/**
* Gets Data
*
* @return array
*/
public function getData()
{
return $this->data;
}

/**
* Sets override when save flag
*
* @param bool $overrideWhenSave
* @return void
* @since 100.0.5
*/
public function setOverrideWhenSave($overrideWhenSave)
{
$this->overrideWhenSave = $overrideWhenSave;
}

/**
* Gets override when save flag
*
* @return bool
* @since 100.0.5
*/
public function isOverrideWhenSave()
{
return $this->overrideWhenSave;
}

/**
* Updates a value in ConfigData configuration by specified path
*
* @param string $path
* @param mixed $value
* @return void
*/
public function set($path, $value)
{
$chunks = $this->expand($path);
$data = [];
$element = &$data;

while ($chunks) {
$key = array_shift($chunks);
if ($chunks) {
$element[$key] = [];
$element = &$element[$key];
} else {
$element[$key] = $value;
}
}

$this->data = array_replace_recursive($this->data, $data);
}

/**
* Expands a path into chunks
*
* All chunks must be not empty and there must be at least two.
*
* @param string $path
* @return string[]
* @throws \InvalidArgumentException
*/
private function expand($path)
{
$chunks = explode('/', $path);

foreach ($chunks as $chunk) {
if ('' == $chunk) {
throw new \InvalidArgumentException(
"Path '$path' is invalid. It cannot be empty nor start or end with '/'"
);
}
}

return $chunks;
}
}