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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\obtain_data\task;
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 obtain_file_updater_method extends task_base
{
    /**
     * @var array    Supported compression methods
     *
     * Note: .tar is assumed to be supported, but not in the list
     */
    protected $available_methods;
    /**
     * @var \phpbb\install\helper\config
     */
    protected $installer_config;
    /**
     * @var \phpbb\install\helper\iohandler\iohandler_interface
     */
    protected $iohandler;
    /**
     * Constructor
     *
     * @param config                $installer_config
     * @param iohandler_interface    $iohandler
     */
    public function __construct(config $installer_config, iohandler_interface $iohandler)
    {
        $this->installer_config    = $installer_config;
        $this->iohandler        = $iohandler;
        $this->available_methods = array('.tar.gz' => 'zlib', '.tar.bz2' => 'bz2', '.zip' => 'zlib');
        parent::__construct(false);
    }
    /**
     * {@inheritdoc}
     */
    public function check_requirements()
    {
        return $this->installer_config->get('do_update_files', false);
    }
    /**
     * {@inheritdoc}
     */
    public function run()
    {
        // Check if data is sent
        if ($this->iohandler->get_input('submit_update_file', false))
        {
            $supported_methods = array('compression', 'ftp', 'direct_file');
            $method = $this->iohandler->get_input('method', 'compression');
            $update_method = (in_array($method, $supported_methods, true)) ? $method : 'compression';
            $this->installer_config->set('file_update_method', $update_method);
            $compression = $this->iohandler->get_input('compression_method', '.zip');
            $supported_methods = array_keys($this->available_methods);
            $supported_methods[] = '.tar';
            $compression = (in_array($compression, $supported_methods, true)) ? $compression : '.zip';
            $this->installer_config->set('file_update_compression', $compression);
        }
        else
        {
            $this->iohandler->add_user_form_group('UPDATE_FILE_METHOD_TITLE', array(
                'method' => array(
                    'label'        => 'UPDATE_FILE_METHOD',
                    'type'        => 'select',
                    'options'    => array(
                        array(
                            'value'        => 'compression',
                            'label'        => 'UPDATE_FILE_METHOD_DOWNLOAD',
                            'selected'    => true,
                        ),
                        array(
                            'value'        => 'ftp',
                            'label'        => 'UPDATE_FILE_METHOD_FTP',
                            'selected'    => false,
                        ),
                        array(
                            'value'        => 'direct_file',
                            'label'        => 'UPDATE_FILE_METHOD_FILESYSTEM',
                            'selected'    => false,
                        ),
                    ),
                ),
                'compression_method' => array(
                    'label'        => 'SELECT_DOWNLOAD_FORMAT',
                    'type'        => 'select',
                    'options'    => $this->get_available_compression_methods(),
                ),
                'submit_update_file' => array(
                    'label'    => 'SUBMIT',
                    'type'    => 'submit',
                ),
            ));
            throw new user_interaction_required_exception();
        }
    }
    /**
     * Returns form elements in an array of available compression methods
     *
     * @return array
     */
    protected function get_available_compression_methods()
    {
        $methods[] = array(
            'value'        => '.tar',
            'label'        => '.tar',
            'selected'    => true,
        );
        foreach ($this->available_methods as $type => $module)
        {
            if (!@extension_loaded($module))
            {
                continue;
            }
            $methods[] = array(
                'value'        => $type,
                'label'        => $type,
                'selected'    => false,
            );
        }
        return $methods;
    }
    /**
     * {@inheritdoc}
     */
    static public function get_step_count()
    {
        return 0;
    }
    /**
     * {@inheritdoc}
     */
    public function get_task_lang_name()
    {
        return '';
    }
}