<?php

/**

 * Multisite upgrade administration panel.

 *

 * @package WordPress

 * @subpackage Multisite

 * @since 3.0.0

 */

/** Load WordPress Administration Bootstrap */

require_once( dirname( __FILE__ ) . '/admin.php' );

require_once( ABSPATH . WPINC . '/http.php' );

$title = __( 'Upgrade Network' );

$parent_file = 'upgrade.php';

get_current_screen()->add_help_tab( array(

	'id'      => 'overview',

	'title'   => __('Overview'),

	'content' =>

		'<p>' . __('Only use this screen once you have updated to a new version of WordPress through Updates/Available Updates (via the Network Administration navigation menu or the Toolbar). Clicking the Upgrade Network button will step through each site in the network, five at a time, and make sure any database updates are applied.') . '</p>' .

		'<p>' . __('If a version update to core has not happened, clicking this button won&#8217;t affect anything.') . '</p>' .

		'<p>' . __('If this process fails for any reason, users logging in to their sites will force the same update.') . '</p>'

) );

get_current_screen()->set_help_sidebar(

	'<p><strong>' . __('For more information:') . '</strong></p>' .

);

require_once( ABSPATH . 'wp-admin/admin-header.php' );

echo '<div class="wrap">';

$action = isset($_GET['action']) ? $_GET['action'] : 'show';

switch ( $action ) {

	case "upgrade":

		$n = ( isset($_GET['n']) ) ? intval($_GET['n']) : 0;

		if ( $n < 5 ) {

			global $wp_db_version;

			update_site_option( 'wpmu_upgrade_site', $wp_db_version );

		}

			echo '<p>' . __( 'All done!' ) . '</p>';

			break;

		}

		echo "<ul>";

			$siteurl = site_url();

			$upgrade_url = admin_url( 'upgrade.php?step=upgrade_db' );

			restore_current_blog();

			echo "<li>$siteurl</li>";

			if ( is_wp_error( $response ) ) {

				wp_die( sprintf(

					/* translators: 1: site url, 2: server error message */

					__( 'Warning! Problem updating %1$s. Your server may not be able to connect to sites running on it. Error message: %2$s' ),

					$siteurl,

					'<em>' . $response->get_error_message() . '</em>'

				) );

			}

			/**

			 * Fires after the Multisite DB upgrade for each site is complete.

			 *

			 *

			 * @param array|WP_Error $response The upgrade response array or WP_Error on failure.

			 */

			do_action( 'after_mu_upgrade', $response );

			/**

			 * Fires after each site has been upgraded.

			 *

			 *

			 */

		}

		echo "</ul>";

		?><p><?php _e( 'If your browser doesn&#8217;t start loading the next page automatically, click this link:' ); ?> <a class="button" href="upgrade.php?action=upgrade&amp;n=<?php echo ($n + 5) ?>"><?php _e("Next Sites"); ?></a></p>

		<script type="text/javascript">

		<!--

		function nextpage() {

			location.href = "upgrade.php?action=upgrade&n=<?php echo ($n + 5) ?>";

		}

		setTimeout( "nextpage()", 250 );

		//-->

		</script><?php

	break;

	case 'show':

	default:

		if ( get_site_option( 'wpmu_upgrade_site' ) != $GLOBALS['wp_db_version'] ) :

		?>

		<p><?php _e( 'WordPress has been updated! Before we send you on your way, we need to individually upgrade the sites in your network.' ); ?></p>

		<?php endif; ?>

		<?php

		/**

		 * Fires before the footer on the network upgrade screen.

		 *

		 */

		do_action( 'wpmu_upgrade_page' );

	break;

}

?>

</div>

<?php include( ABSPATH . 'wp-admin/admin-footer.php' ); ?>