<?php

namespace PhpOffice\PhpSpreadsheet;

use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
use PhpOffice\PhpSpreadsheet\Chart\Renderer\IRenderer;
use PhpOffice\PhpSpreadsheet\Collection\Memory;

> use Psr\Http\Client\ClientInterface;
use Psr\SimpleCache\CacheInterface;
> use Psr\Http\Message\RequestFactoryInterface;



class Settings
{
    /**
     * Class name of the chart renderer used for rendering charts
     * eg: PhpOffice\PhpSpreadsheet\Chart\Renderer\JpGraph.
     *
     * @var string
     */
    private static $chartRenderer;

    /**
     * Default options for libxml loader.
     *
     * @var int
     */
    private static $libXmlLoaderOptions = null;

    /**
     * Allow/disallow libxml_disable_entity_loader() call when not thread safe.
     * Default behaviour is to do the check, but if you're running PHP versions
     *      7.2 < 7.2.1

<      *      7.1 < 7.1.13
<      *      7.0 < 7.0.27


     * then you may need to disable this check to prevent unwanted behaviour in other threads
     * SECURITY WARNING: Changing this flag is not recommended.
     *
     * @var bool
     */
    private static $libXmlDisableEntityLoader = true;

    /**
     * The cache implementation to be used for cell collection.
     *
     * @var CacheInterface
     */
    private static $cache;

    /**

>      * The HTTP client implementation to be used for network request.
     * Set the locale code to use for formula translations and any special formatting.
>      *
     *
>      * @var null|ClientInterface
     * @param string $locale The locale code to use (e.g. "fr" or "pt_br" or "en_uk")
>      */
     *
>     private static $httpClient;
     * @return bool Success or failure
> 
     */
>     /**
    public static function setLocale($locale)
>      * @var null|RequestFactoryInterface
    {
>      */
        return Calculation::getInstance()->setLocale($locale);
>     private static $requestFactory;
    }
> 

>     /**


    /**
     * Identify to PhpSpreadsheet the external library to use for rendering charts.
     *
     * @param string $rendererClass Class name of the chart renderer
     *    eg: PhpOffice\PhpSpreadsheet\Chart\Renderer\JpGraph

<      *
<      * @throws Exception


     */

<     public static function setChartRenderer($rendererClass)



>     public static function setChartRenderer($rendererClass): void


    {
        if (!is_a($rendererClass, IRenderer::class, true)) {
            throw new Exception('Chart renderer must implement ' . IRenderer::class);
        }

        self::$chartRenderer = $rendererClass;
    }

    /**
     * Return the Chart Rendering Library that PhpSpreadsheet is currently configured to use.
     *
     * @return null|string Class name of the chart renderer
     *    eg: PhpOffice\PhpSpreadsheet\Chart\Renderer\JpGraph
     */
    public static function getChartRenderer()
    {
        return self::$chartRenderer;
    }

    /**
     * Set default options for libxml loader.
     *
     * @param int $options Default options for libxml loader
     */

<     public static function setLibXmlLoaderOptions($options)



>     public static function setLibXmlLoaderOptions($options): void


    {
        if ($options === null && defined('LIBXML_DTDLOAD')) {
            $options = LIBXML_DTDLOAD | LIBXML_DTDATTR;
        }
        self::$libXmlLoaderOptions = $options;
    }

    /**
     * Get default options for libxml loader.
     * Defaults to LIBXML_DTDLOAD | LIBXML_DTDATTR when not set explicitly.
     *
     * @return int Default options for libxml loader
     */
    public static function getLibXmlLoaderOptions()
    {
        if (self::$libXmlLoaderOptions === null && defined('LIBXML_DTDLOAD')) {
            self::setLibXmlLoaderOptions(LIBXML_DTDLOAD | LIBXML_DTDATTR);
        } elseif (self::$libXmlLoaderOptions === null) {
            self::$libXmlLoaderOptions = true;
        }

        return self::$libXmlLoaderOptions;
    }

    /**
     * Enable/Disable the entity loader for libxml loader.
     * Allow/disallow libxml_disable_entity_loader() call when not thread safe.
     * Default behaviour is to do the check, but if you're running PHP versions
     *      7.2 < 7.2.1

<      *      7.1 < 7.1.13
<      *      7.0 < 7.0.27


     * then you may need to disable this check to prevent unwanted behaviour in other threads
     * SECURITY WARNING: Changing this flag to false is not recommended.
     *
     * @param bool $state
     */

<     public static function setLibXmlDisableEntityLoader($state)



>     public static function setLibXmlDisableEntityLoader($state): void


    {
        self::$libXmlDisableEntityLoader = (bool) $state;
    }

    /**
     * Return the state of the entity loader (disabled/enabled) for libxml loader.
     *
     * @return bool $state
     */
    public static function getLibXmlDisableEntityLoader()
    {
        return self::$libXmlDisableEntityLoader;
    }

    /**
     * Sets the implementation of cache that should be used for cell collection.

<      *
<      * @param CacheInterface $cache


     */

<     public static function setCache(CacheInterface $cache)



>     public static function setCache(CacheInterface $cache): void


    {
        self::$cache = $cache;
    }

    /**
     * Gets the implementation of cache that should be used for cell collection.
     *
     * @return CacheInterface
     */
    public static function getCache()
    {
        if (!self::$cache) {
            self::$cache = new Memory();
        }

        return self::$cache;

>     }
    }
> 
}
>     /**
>      * Set the HTTP client implementation to be used for network request.
>      */
>     public static function setHttpClient(ClientInterface $httpClient, RequestFactoryInterface $requestFactory): void
>     {
>         self::$httpClient = $httpClient;
>         self::$requestFactory = $requestFactory;
>     }
> 
>     /**
>      * Unset the HTTP client configuration.
>      */
>     public static function unsetHttpClient(): void
>     {
>         self::$httpClient = null;
>         self::$requestFactory = null;
>     }
> 
>     /**
>      * Get the HTTP client implementation to be used for network request.
>      */
>     public static function getHttpClient(): ClientInterface
>     {
>         self::assertHttpClient();
> 
>         return self::$httpClient;
>     }
> 
>     /**
>      * Get the HTTP request factory.
>      */
>     public static function getRequestFactory(): RequestFactoryInterface
>     {
>         self::assertHttpClient();
> 
>         return self::$requestFactory;
>     }
> 
>     private static function assertHttpClient(): void
>     {
>         if (!self::$httpClient || !self::$requestFactory) {
>             throw new Exception('HTTP client must be configured via Settings::setHttpClient() to be able to use WEBSERVICE function.');
>         }