<?php
/**
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup Installer
 */

namespace MediaWiki\Installer;

class WebInstallerDBSettings extends WebInstallerPage {

	/**
	 * @return string|null
	 */
	public function execute() {
		$installer = $this->parent->getDBInstaller( $this->getVar( 'wgDBtype' ) );
		$form = $installer->getSettingsForm( $this->parent );

		$r = $this->parent->request;
		if ( $r->wasPosted() ) {
			$status = $form->submit();
			if ( $status === false ) {
				return 'skip';
			} elseif ( $status->isGood() ) {
				return 'continue';
			} else {
				$this->parent->showStatusBox( $status );
			}
		}

		$formHtml = $form->getHtml();
		if ( $formHtml === false ) {
			return 'skip';
		}

		$this->startForm();
		$this->addHTML( $formHtml );
		$this->endForm();

		return null;
	}

}