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<?php
/**
 *
 * This file is part of the phpBB Forum Software package.
 *
 * @copyright (c) phpBB Limited <https://www.phpbb.com>
 * @license GNU General Public License, version 2 (GPL-2.0)
 *
 * For full copyright and license information, please see
 * the docs/CREDITS.txt file.
 *
 */
namespace phpbb\install\controller;
use phpbb\exception\http_exception;
use phpbb\install\helper\install_helper;
use phpbb\install\helper\iohandler\factory;
use phpbb\install\helper\navigation\navigation_provider;
use phpbb\install\installer;
use phpbb\language\language;
use phpbb\request\request_interface;
use phpbb\template\template;
use Symfony\Component\HttpFoundation\StreamedResponse;
/**
 * Updater controller
 */
class update
{
    /**
     * @var helper
     */
    protected $controller_helper;
    /**
     * @var installer
     */
    protected $installer;
    /**
     * @var install_helper
     */
    protected $install_helper;
    /**
     * @var factory
     */
    protected $iohandler_factory;
    /**
     * @var language
     */
    protected $language;
    /**
     * @var navigation_provider
     */
    protected $menu_provider;
    /**
     * @var request_interface
     */
    protected $request;
    /**
     * @var template
     */
    protected $template;
    /**
     * Constructor
     *
     * @param helper                $controller_helper
     * @param installer                $installer
     * @param install_helper        $install_helper
     * @param factory                $iohandler
     * @param language                $language
     * @param navigation_provider    $menu_provider
     * @param request_interface        $request
     * @param template                $template
     */
    public function __construct(helper $controller_helper, installer $installer, install_helper $install_helper, factory $iohandler, language $language, navigation_provider $menu_provider, request_interface $request, template $template)
    {
        $this->controller_helper    = $controller_helper;
        $this->installer            = $installer;
        $this->install_helper        = $install_helper;
        $this->iohandler_factory    = $iohandler;
        $this->language                = $language;
        $this->menu_provider        = $menu_provider;
        $this->request                = $request;
        $this->template                = $template;
    }
    /**
     * Controller entry point
     *
     * @return Response|StreamedResponse
     *
     * @throws http_exception When phpBB is not installed
     */
    public function handle()
    {
        if (!$this->install_helper->is_phpbb_installed())
        {
            throw new http_exception(403, 'INSTALL_PHPBB_NOT_INSTALLED');
        }
        $this->template->assign_vars(array(
            'U_ACTION' => $this->controller_helper->route('phpbb_installer_update'),
        ));
        // Set up input-output handler
        if ($this->request->is_ajax())
        {
            $this->iohandler_factory->set_environment('ajax');
        }
        else
        {
            $this->iohandler_factory->set_environment('nojs');
        }
        // Set the appropriate input-output handler
        $this->installer->set_iohandler($this->iohandler_factory->get());
        $this->controller_helper->handle_language_select();
        // Render the intro page
        if ($this->request->is_ajax())
        {
            $installer = $this->installer;
            $response = new StreamedResponse();
            $response->setCallback(function() use ($installer) {
                $installer->run();
            });
            // Try to bypass any server output buffers
            $response->headers->set('X-Accel-Buffering', 'no');
            $response->headers->set('Content-type', 'application/json');
            return $response;
        }
        else
        {
            // Set active stage
            $this->menu_provider->set_nav_property(
                array('update', 0, 'introduction'),
                array(
                    'selected'    => true,
                    'completed'    => false,
                )
            );
            $this->template->assign_vars(array(
                'SHOW_INSTALL_START_FORM'    => true,
                'TITLE'                        => $this->language->lang('UPDATE_INSTALLATION'),
                'CONTENT'                    => $this->language->lang('UPDATE_INSTALLATION_EXPLAIN'),
            ));
            /** @var \phpbb\install\helper\iohandler\iohandler_interface $iohandler */
            $iohandler = $this->iohandler_factory->get();
            $this->controller_helper->handle_navigation($iohandler);
            return $this->controller_helper->render('installer_update.html', 'UPDATE_INSTALLATION', true);
        }
    }
}