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<?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
 */
class WebInstallerWelcome extends WebInstallerPage {
    /**
     * @return string
     */
    public function execute() {
        if ( $this->parent->request->wasPosted() && $this->getVar( '_Environment' ) ) {
            return 'continue';
        }
        $this->parent->output->addWikiTextAsInterface( wfMessage( 'config-welcome' )->plain() );
        $status = $this->parent->doEnvironmentChecks();
        if ( $status->isGood() ) {
            $this->parent->output->addHTML( '<span class="success-message">' .
                wfMessage( 'config-env-good' )->escaped() . '</span>' );
            $this->parent->output->addWikiTextAsInterface(
                wfMessage( 'config-welcome-section-copyright',
                    SpecialVersion::getCopyrightAndAuthorList(),
                    wfExpandUrl( $this->parent->getDocUrl( 'Copying' ) )
                )->plain()
            );
            $this->startForm();
            $this->endForm();
        } else {
            $this->parent->showStatusMessage( $status );
        }
        return '';
    }
}