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<?php
/**
 * Install theme administration panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

/** WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';
require ABSPATH . 'wp-admin/includes/theme-install.php';

$tab = ! empty( $_REQUEST['tab'] ) ? sanitize_text_field( $_REQUEST['tab'] ) : '';

if ( ! current_user_can( 'install_themes' ) ) {
	wp_die( __( 'Sorry, you are not allowed to install themes on this site.' ) );
}

if ( is_multisite() && ! is_network_admin() ) {
	wp_redirect( network_admin_url( 'theme-install.php' ) );
	exit;
}

// Used in the HTML title tag.
$title       = __( 'Add Themes' );
$parent_file = 'themes.php';

if ( ! is_network_admin() ) {
	$submenu_file = 'themes.php';
}

$installed_themes = search_theme_directories();

if ( false === $installed_themes ) {
	$installed_themes = array();
}

foreach ( $installed_themes as $theme_slug => $theme_data ) {
	// Ignore child themes.
	if ( str_contains( $theme_slug, '/' ) ) {
		unset( $installed_themes[ $theme_slug ] );
	}
}

wp_localize_script(
	'theme',
	'_wpThemeSettings',
	array(
		'themes' => false,
		'settings' => array(
			'isInstall' => true,
			'canInstall' => current_user_can( 'install_themes' ),
			'installURI' => current_user_can( 'install_themes' ) ? self_admin_url( 'theme-install.php' ) : null,
			'adminUrl' => parse_url( self_admin_url(), PHP_URL_PATH ),
		),
		'l10n' => array(
			'addNew' => __( 'Add New Theme' ),
			'search' => __( 'Search Themes' ),
			'upload' => __( 'Upload Theme' ),
			'back' => __( 'Back' ),
			'error' => sprintf(
				/* translators: %s: Support forums URL. */
				__( 'An unexpected error occurred. Something may be wrong with WordPress.org or this server&#8217;s configuration. If you continue to have problems, please try the <a href="%s">support forums</a>.' ),
				__( 'https://wordpress.org/support/forums/' )
			),
			'tryAgain' => __( 'Try Again' ),
			/* translators: %d: Number of themes. */
			'themesFound' => __( 'Number of Themes found: %d' ),
			'noThemesFound' => __( 'No themes found. Try a different search.' ),
			'collapseSidebar' => __( 'Collapse Sidebar' ),
			'expandSidebar' => __( 'Expand Sidebar' ),
			/* translators: Hidden accessibility text. */
			'selectFeatureFilter' => __( 'Select one or more Theme features to filter by' ),
		),
		'installedThemes' => array_keys( $installed_themes ),
		'activeTheme' => get_stylesheet(),
	)
);

wp_enqueue_script( 'theme' );
wp_enqueue_script( 'updates' );

if ( $tab ) {
	/**
	 * Fires before each of the tabs are rendered on the Install Themes page.
	 *
	 * The dynamic portion of the hook name, `$tab`, refers to the current
	 * theme installation tab.
	 *
	 * Possible hook names include:
	 *
	 *  - `install_themes_pre_block-themes`
	 *  - `install_themes_pre_dashboard`
	 *  - `install_themes_pre_featured`
	 *  - `install_themes_pre_new`
	 *  - `install_themes_pre_search`
	 *  - `install_themes_pre_updated`
	 *  - `install_themes_pre_upload`
	 *
	 * @since 2.8.0
	 * @since 6.1.0 Added the `install_themes_pre_block-themes` hook name.
	 */
	do_action( "install_themes_pre_{$tab}" );
}

$help_overview =
	'' . sprintf(
		/* translators: %s: Theme Directory URL. */
		__( 'You can find additional themes for your site by using the Theme Browser/Installer on this screen, which will display themes from the <a href="%s">WordPress Theme Directory</a>. These themes are designed and developed by third parties, are available free of charge, and are compatible with the license WordPress uses.' ),
		__( 'https://wordpress.org/themes/' )
	) . '' .
	'' . __( 'You can Search for themes by keyword, author, or tag, or can get more specific and search by criteria listed in the feature filter.' ) . ' ' . __( 'The search results will be updated as you type.' ) . '' .
	'' . __( 'Alternately, you can browse the themes that are Popular or Latest. When you find a theme you like, y