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<?php

/**
 * Joomla! Content Management System
 *
 * @copyright  (C) 2006 Open Source Matters, Inc. <https://www.joomla.org>
 * @license    GNU General Public License version 2 or later; see LICENSE.txt
 */

namespace Joomla\CMS\Application;

use Joomla\CMS\Component\ComponentHelper;
use Joomla\CMS\Factory;
use Joomla\CMS\Filter\OutputFilter;

// phpcs:disable PSR1.Files.SideEffects
\defined('JPATH_PLATFORM') or die;
// phpcs:enable PSR1.Files.SideEffects

/**
 * Application helper functions
 *
 * @since  1.5
 */
class ApplicationHelper
{
    /**
     * Client information array
     *
     * @var    array
     * @since  1.6
     */
    protected static $_clients = [];

    /**
     * Return the name of the request component [main component]
     *
     * @param   string  $default  The default option
     *
     * @return  string  Option (e.g. com_something)
     *
     * @since   1.6
     */
    public static function getComponentName($default = null)
    {
        static $option;

        if ($option) {
            return $option;
        }

        $input  = Factory::getApplication()->getInput();
        $option = strtolower($input->get('option', ''));

        if (empty($option)) {
            $option = $default;
        }

        $input->set('option', $option);

        return $option;
    }

    /**
     * Provides a secure hash based on a seed
     *
     * @param   string  $seed  Seed string.
     *
     * @return  string  A secure hash
     *
     * @since   3.2
     */
    public static function getHash($seed)
    {
        return md5(Factory::getApplication()->get('secret') . $seed);
    }

    /**
     * This method transliterates a string into a URL
     * safe string or returns a URL safe UTF-8 string
     * based on the global configuration
     *
     * @param   string  $string    String to process
     * @param   string  $language  Language to transliterate to if unicode slugs are disabled
     *
     * @return  string  Processed string
     *
     * @since   3.2
     */
    public static function stringURLSafe($string, $language = '')
    {
        if (Factory::getApplication()->get('unicodeslugs') == 1) {
            $output = OutputFilter::stringUrlUnicodeSlug($string);
        } else {
            if ($language === '*' || $language === '') {
                $languageParams = ComponentHelper::getParams('com_languages');
                $language       = $languageParams->get('site');
            }

            $output = OutputFilter::stringURLSafe($string, $language);
        }

        return $output;
    }

    /**
     * Gets information on a specific client id.  This method will be useful in
     * future versions when we start mapping applications in the database.
     *
     * This method will return a client information array if called
     * with no arguments which can be used to add custom application information.
     *
     * @param   integer|string|null   $id      A client identifier
     * @param   boolean               $byName  If true, find the client by its name
     *
     * @return  \stdClass|\stdClass[]|null  Object describing the client, array containing all the clients or null if $id not known
     *
     * @since   1.5
     */
    public static function getClientInfo($id = null, $byName = false)
    {
        // Only create the array if it is empty
        if (empty(self::$_clients)) {
            $obj = new \stdClass();

            // Site Client
            $obj->id           = 0;
            $obj->name         = 'site';
            $obj->path         = JPATH_SITE;
            self::$_clients[0] = clone $obj;

            // Administrator Client
            $obj->id           = 1;
            $obj->name         = 'administrator';
            $obj->path         = JPATH_ADMINISTRATOR;
            self::$_clients[1] = clone $obj;

            // Installation Client
            $obj->id           = 2;
            $obj->name         = 'installation';
            $obj->path         = JPATH_INSTALLATION;
            self::$_clients[2] = clone $obj;

            // API Client
            $obj->id           = 3;
            $obj->name         = 'api';
            $obj->path         = JPATH_API;
            self::$_clients[3] = clone $obj;

            // CLI Client
            $obj->id           = 4;
            $obj->name         = 'cli';
            $obj->path         = JPATH_CLI;
            self::$_clients[4] = clone $obj;
        }

        // If no client id has been passed return the whole array
        if ($id === null) {
            return self::$_clients;
        }

        // Are we looking for client information by id or by name?
        if (!$byName) {
            if (isset(self::$_clients[$id])) {
                return self::$_clients[$id];
            }
        } else {
            foreach (self::$_clients as $client) {
                if ($client->name == strtolower($id)) {
                    return $client;
                }
            }
        }

        return null;
    }

    /**
     * Adds information for a client.
     *
     * @param   mixed  $client  A client identifier either an array or object
     *
     * @return  boolean  True if the information is added. False on error
     *
     * @since   1.6
     */
    public static function addClientInfo($client)
    {
        if (\is_array($client)) {
            $client = (object) $client;
        }

        if (!\is_object($client)) {
            return false;
        }

        $info = self::getClientInfo();

        if (!isset($client->id)) {
            $client->id = \count($info);
        }

        self::$_clients[$client->id] = clone $client;

        return true;
    }
}