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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\module\update_filesystem\task;
use phpbb\filesystem\filesystem;
use phpbb\install\exception\jump_to_restart_point_exception;
use phpbb\install\exception\user_interaction_required_exception;
use phpbb\install\helper\config;
use phpbb\install\helper\iohandler\iohandler_interface;
use phpbb\install\task_base;
class download_updated_files extends task_base
{
    /**
     * @var config
     */
    protected $installer_config;
    /**
     * @var filesystem
     */
    protected $filesystem;
    /**
     * @var iohandler_interface
     */
    protected $iohandler;
    /**
     * Constructor
     *
     * @param config                $config
     * @param iohandler_interface    $iohandler
     * @param filesystem            $filesystem
     */
    public function __construct(config $config, iohandler_interface $iohandler, filesystem $filesystem)
    {
        $this->installer_config    = $config;
        $this->iohandler        = $iohandler;
        $this->filesystem        = $filesystem;
        parent::__construct(false);
    }
    /**
     * {@inheritdoc}
     */
    public function check_requirements()
    {
        return $this->installer_config->get('do_update_files', false)
            && $this->installer_config->get('file_update_method', '') === 'compression';
    }
    /**
     * {@inheritdoc}
     */
    public function run()
    {
        if ($this->iohandler->get_input('database_update_submit', false))
        {
            // Remove archive
            $this->filesystem->remove(
                $this->installer_config->get('update_file_archive', null)
            );
            $this->installer_config->set('update_file_archive', null);
        }
        else if ($this->iohandler->get_input('update_recheck_files_submit', false))
        {
            $this->installer_config->set('file_updater_elem_progress', '');
            $this->installer_config->set('update_files', array());
            throw new jump_to_restart_point_exception('check_update_files');
        }
        else
        {
            $file_update_info = $this->installer_config->get('update_files', array());
            // Display download box only if the archive won't be empty
            $display_download_link = !empty($file_update_info) && !(isset($file_update_info['delete']) && count($file_update_info) == 1);
            if ($display_download_link)
            {
                // Render download box
                $this->iohandler->add_download_link(
                    'phpbb_installer_update_file_download',
                    'DOWNLOAD_UPDATE_METHOD',
                    'DOWNLOAD_UPDATE_METHOD_EXPLAIN'
                );
            }
            // Add form to continue update
            $this->iohandler->add_user_form_group('UPDATE_CONTINUE_UPDATE_PROCESS', array(
                'update_recheck_files_submit'    => array(
                    'label'            => 'UPDATE_RECHECK_UPDATE_FILES',
                    'type'            => 'submit',
                    'is_secondary'    => empty($file_update_info),
                ),
                'database_update_submit'    => array(
                    'label'        => 'UPDATE_CONTINUE_UPDATE_PROCESS',
                    'type'        => 'submit',
                    'disabled'    => $display_download_link,
                ),
            ));
            throw new user_interaction_required_exception();
        }
    }
    /**
     * {@inheritdoc}
     */
    static public function get_step_count()
    {
        return 0;
    }
    /**
     * {@inheritdoc}
     */
    public function get_task_lang_name()
    {
        return '';
    }
}