<?php

/**

 * Multisite themes administration panel.

 *

 * @package WordPress

 * @subpackage Multisite

 * @since 3.1.0

 */

/** Load WordPress Administration Bootstrap */

require_once __DIR__ . '/admin.php';

if ( ! current_user_can( 'manage_network_themes' ) ) {

	wp_die( __( 'Sorry, you are not allowed to manage network themes.' ) );

}

$wp_list_table = _get_list_table( 'WP_MS_Themes_List_Table' );

$pagenum       = $wp_list_table->get_pagenum();

$action = $wp_list_table->current_action();

$s = isset( $_REQUEST['s'] ) ? $_REQUEST['s'] : '';

// Clean up request URI from temporary args for screen options/paging uri's to work as expected.

$temp_args = array(

	'enabled',

	'disabled',

	'deleted',

	'error',

	'enabled-auto-update',

	'disabled-auto-update',

);

$_SERVER['REQUEST_URI'] = remove_query_arg( $temp_args, $_SERVER['REQUEST_URI'] );

$referer                = remove_query_arg( $temp_args, wp_get_referer() );

if ( $action ) {

	switch ( $action ) {

		case 'enable':

			check_admin_referer( 'enable-theme_' . $_GET['theme'] );

			WP_Theme::network_enable_theme( $_GET['theme'] );

			if ( false === strpos( $referer, '/network/themes.php' ) ) {

				wp_redirect( network_admin_url( 'themes.php?enabled=1' ) );

			} else {

				wp_safe_redirect( add_query_arg( 'enabled', 1, $referer ) );

			}

			exit;

		case 'disable':

			check_admin_referer( 'disable-theme_' . $_GET['theme'] );

			WP_Theme::network_disable_theme( $_GET['theme'] );

			wp_safe_redirect( add_query_arg( 'disabled', '1', $referer ) );

			exit;

		case 'enable-selected':

			check_admin_referer( 'bulk-themes' );

			$themes = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();

			if ( empty( $themes ) ) {

				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );

				exit;

			}

			WP_Theme::network_enable_theme( (array) $themes );

			wp_safe_redirect( add_query_arg( 'enabled', count( $themes ), $referer ) );

			exit;

		case 'disable-selected':

			check_admin_referer( 'bulk-themes' );

			$themes = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();

			if ( empty( $themes ) ) {

				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );

				exit;

			}

			WP_Theme::network_disable_theme( (array) $themes );

			wp_safe_redirect( add_query_arg( 'disabled', count( $themes ), $referer ) );

			exit;

		case 'update-selected':

			check_admin_referer( 'bulk-themes' );

			if ( isset( $_GET['themes'] ) ) {

				$themes = explode( ',', $_GET['themes'] );

			} elseif ( isset( $_POST['checked'] ) ) {

				$themes = (array) $_POST['checked'];

			} else {

				$themes = array();

			}

			$title       = __( 'Update Themes' );

			$parent_file = 'themes.php';

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

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

			echo '<h1>' . esc_html( $title ) . '</h1>';

			$url = self_admin_url( 'update.php?action=update-selected-themes&themes=' . urlencode( implode( ',', $themes ) ) );

			$url = wp_nonce_url( $url, 'bulk-update-themes' );

			echo "<iframe src='$url' style='width: 100%; height:100%; min-height:850px;'></iframe>";

			echo '</div>';

			require_once ABSPATH . 'wp-admin/admin-footer.php';

			exit;

		case 'delete-selected':

			if ( ! current_user_can( 'delete_themes' ) ) {

				wp_die( __( 'Sorry, you are not allowed to delete themes for this site.' ) );

			}

			check_admin_referer( 'bulk-themes' );

			$themes = isset( $_REQUEST['checked'] ) ? (array) $_REQUEST['checked'] : array();

			if ( empty( $themes ) ) {

				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );

				exit;

			}

			$themes = array_diff( $themes, array( get_option( 'stylesheet' ), get_option( 'template' ) ) );

			if ( empty( $themes ) ) {

				wp_safe_redirect( add_query_arg( 'error', 'main', $referer ) );

				exit;

			}

			$theme_info = array();

			foreach ( $themes as $key => $theme ) {

				$theme_info[ $theme ] = wp_get_theme( $theme );

			}

			require ABSPATH . 'wp-admin/update.php';

			$parent_file = 'themes.php';

			if ( ! isset( $_REQUEST['verify-delete'] ) ) {

				wp_enqueue_script( 'jquery' );

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

				$themes_to_delete = count( $themes );

				?>

				<div class="wrap">

				<?php if ( 1 === $themes_to_delete ) : ?>

					<h1><?php _e( 'Delete Theme' ); ?></h1>

					<div class="error"><p><strong><?php _e( 'Caution:' ); ?></strong> <?php _e( 'This theme may be active on other sites in the network.' ); ?></p></div>

					<p><?php _e( 'You are about to remove the following theme:' ); ?></p>

				<?php else : ?>

					<h1><?php _e( 'Delete Themes' ); ?></h1>

					<div class="error"><p><strong><?php _e( 'Caution:' ); ?></strong> <?php _e( 'These themes may be active on other sites in the network.' ); ?></p></div>

					<p><?php _e( 'You are about to remove the following themes:' ); ?></p>

				<?php endif; ?>

					<ul class="ul-disc">

					<?php

					foreach ( $theme_info as $theme ) {

						echo '<li>' . sprintf(

							/* translators: 1: Theme name, 2: Theme author. */

							_x( '%1$s by %2$s', 'theme' ),

							'<strong>' . $theme->display( 'Name' ) . '</strong>',

							'<em>' . $theme->display( 'Author' ) . '</em>'

						) . '</li>';

					}

					?>

					</ul>

				<?php if ( 1 === $themes_to_delete ) : ?>

					<p><?php _e( 'Are you sure you want to delete this theme?' ); ?></p>

				<?php else : ?>

					<p><?php _e( 'Are you sure you want to delete these themes?' ); ?></p>

				<?php endif; ?>

				<form method="post" action="<?php echo esc_url( $_SERVER['REQUEST_URI'] ); ?>" style="display:inline;">

					<input type="hidden" name="verify-delete" value="1" />

					<input type="hidden" name="action" value="delete-selected" />

					<?php

					foreach ( (array) $themes as $theme ) {

						echo '<input type="hidden" name="checked[]" value="' . esc_attr( $theme ) . '" />';

					}

					wp_nonce_field( 'bulk-themes' );

					if ( 1 === $themes_to_delete ) {

						submit_button( __( 'Yes, delete this theme' ), '', 'submit', false );

					} else {

						submit_button( __( 'Yes, delete these themes' ), '', 'submit', false );

					}

					?>

				</form>

				<?php $referer = wp_get_referer(); ?>

				<form method="post" action="<?php echo $referer ? esc_url( $referer ) : ''; ?>" style="display:inline;">

					<?php submit_button( __( 'No, return me to the theme list' ), '', 'submit', false ); ?>

				</form>

				</div>

				<?php

				require_once ABSPATH . 'wp-admin/admin-footer.php';

				exit;

			} // End if verify-delete.

			foreach ( $themes as $theme ) {

				$delete_result = delete_theme(

					$theme,

					esc_url(

						add_query_arg(

							array(

								'verify-delete' => 1,

								'action'        => 'delete-selected',

								'checked'       => $_REQUEST['checked'],

								'_wpnonce'      => $_REQUEST['_wpnonce'],

							),

							network_admin_url( 'themes.php' )

						)

					)

				);

			}

			$paged = ( $_REQUEST['paged'] ) ? $_REQUEST['paged'] : 1;

			wp_redirect(

				add_query_arg(

					array(

						'deleted' => count( $themes ),

						'paged'   => $paged,

						's'       => $s,

					),

					network_admin_url( 'themes.php' )

				)

			);

			exit;

		case 'enable-auto-update':

		case 'disable-auto-update':

		case 'enable-auto-update-selected':

		case 'disable-auto-update-selected':

			if ( ! ( current_user_can( 'update_themes' ) && wp_is_auto_update_enabled_for_type( 'theme' ) ) ) {

				wp_die( __( 'Sorry, you are not allowed to change themes automatic update settings.' ) );

			}

			if ( 'enable-auto-update' === $action || 'disable-auto-update' === $action ) {

				check_admin_referer( 'updates' );

			} else {

				if ( empty( $_POST['checked'] ) ) {

					// Nothing to do.

					wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );

					exit;

				}

				check_admin_referer( 'bulk-themes' );

			}

			$auto_updates = (array) get_site_option( 'auto_update_themes', array() );

			if ( 'enable-auto-update' === $action ) {

				$auto_updates[] = $_GET['theme'];

				$auto_updates   = array_unique( $auto_updates );

				$referer        = add_query_arg( 'enabled-auto-update', 1, $referer );

			} elseif ( 'disable-auto-update' === $action ) {

				$auto_updates = array_diff( $auto_updates, array( $_GET['theme'] ) );

				$referer      = add_query_arg( 'disabled-auto-update', 1, $referer );

			} else {

				// Bulk enable/disable.

				$themes = (array) wp_unslash( $_POST['checked'] );

				if ( 'enable-auto-update-selected' === $action ) {

					$auto_updates = array_merge( $auto_updates, $themes );

					$auto_updates = array_unique( $auto_updates );

					$referer      = add_query_arg( 'enabled-auto-update', count( $themes ), $referer );

				} else {

					$auto_updates = array_diff( $auto_updates, $themes );

					$referer      = add_query_arg( 'disabled-auto-update', count( $themes ), $referer );

				}

			}

			$all_items = wp_get_themes();

			// Remove themes that don't exist or have been deleted since the option was last updated.

			$auto_updates = array_intersect( $auto_updates, array_keys( $all_items ) );

			update_site_option( 'auto_update_themes', $auto_updates );

			wp_safe_redirect( $referer );

			exit;

		default:

			$themes = isset( $_POST['checked'] ) ? (array) $_POST['checked'] : array();

			if ( empty( $themes ) ) {

				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );

				exit;

			}

			check_admin_referer( 'bulk-themes' );

			/** This action is documented in wp-admin/network/site-themes.php */

			$referer = apply_filters( 'handle_network_bulk_actions-' . get_current_screen()->id, $referer, $action, $themes ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores

			wp_safe_redirect( $referer );

			exit;

	}

}

$wp_list_table->prepare_items();

add_thickbox();

add_screen_option( 'per_page' );

get_current_screen()->add_help_tab(

	array(

		'id'      => 'overview',

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

		'content' =>

			'<p>' . __( 'This screen enables and disables the inclusion of themes available to choose in the Appearance menu for each site. It does not activate or deactivate which theme a site is currently using.' ) . '</p>' .

			'<p>' . __( 'If the network admin disables a theme that is in use, it can still remain selected on that site. If another theme is chosen, the disabled theme will not appear in the site&#8217;s Appearance > Themes screen.' ) . '</p>' .

			'<p>' . __( 'Themes can be enabled on a site by site basis by the network admin on the Edit Site screen (which has a Themes tab); get there via the Edit action link on the All Sites screen. Only network admins are able to install or edit themes.' ) . '</p>',

	)

);

$help_sidebar_autoupdates = '';

if ( current_user_can( 'update_themes' ) && wp_is_auto_update_enabled_for_type( 'theme' ) ) {

	get_current_screen()->add_help_tab(

		array(

			'id'      => 'plugins-themes-auto-updates',

			'title'   => __( 'Auto-updates' ),

			'content' =>

				'<p>' . __( 'Auto-updates can be enabled or disabled for each individual theme. Themes with auto-updates enabled will display the estimated date of the next auto-update. Auto-updates depends on the WP-Cron task scheduling system.' ) . '</p>' .

				'<p>' . __( 'Please note: Third-party themes and plugins, or custom code, may override WordPress scheduling.' ) . '</p>',

		)

	);

	$help_sidebar_autoupdates = '<p>' . __( '<a href="https://wordpress.org/support/article/plugins-themes-auto-updates/">Learn more: Auto-updates documentation</a>' ) . '</p>';

}

get_current_screen()->set_help_sidebar(

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

	'<p>' . __( '<a href="https://codex.wordpress.org/Network_Admin_Themes_Screen">Documentation on Network Themes</a>' ) . '</p>' .

	$help_sidebar_autoupdates .

	'<p>' . __( '<a href="https://wordpress.org/support/">Support</a>' ) . '</p>'

);

get_current_screen()->set_screen_reader_content(

	array(

		'heading_views'      => __( 'Filter themes list' ),

		'heading_pagination' => __( 'Themes list navigation' ),

		'heading_list'       => __( 'Themes list' ),

	)

);

$title       = __( 'Themes' );

$parent_file = 'themes.php';

wp_enqueue_script( 'updates' );

wp_enqueue_script( 'theme-preview' );

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

?>

<div class="wrap">

<h1 class="wp-heading-inline"><?php echo esc_html( $title ); ?></h1>

<?php if ( current_user_can( 'install_themes' ) ) : ?>

	<a href="theme-install.php" class="page-title-action"><?php echo esc_html_x( 'Add New', 'theme' ); ?></a>

<?php endif; ?>

<?php

if ( isset( $_REQUEST['s'] ) && strlen( $_REQUEST['s'] ) ) {

	echo '<span class="subtitle">';

	printf(

		/* translators: %s: Search query. */

		__( 'Search results for: %s' ),

		'<strong>' . esc_html( $s ) . '</strong>'

	);

	echo '</span>';

}

?>

<hr class="wp-header-end">

<?php

if ( isset( $_GET['enabled'] ) ) {

	$enabled = absint( $_GET['enabled'] );

	if ( 1 === $enabled ) {

		$message = __( 'Theme enabled.' );

	} else {

		/* translators: %s: Number of themes. */

		$message = _n( '%s theme enabled.', '%s themes enabled.', $enabled );

	}

	echo '<div id="message" class="updated notice is-dismissible"><p>' . sprintf( $message, number_format_i18n( $enabled ) ) . '</p></div>';

} elseif ( isset( $_GET['disabled'] ) ) {

	$disabled = absint( $_GET['disabled'] );

	if ( 1 === $disabled ) {

		$message = __( 'Theme disabled.' );

	} else {