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<?php

/**
 * Site Editor administration screen.
 *
 * @package WordPress
 * @subpackage Administration
 */

global $editor_styles;


/** WordPress Administration Bootstrap */
require_once __DIR__ . '/admin.php';

if ( ! current_user_can( 'edit_theme_options' ) ) {
  wp_die(
    '<h1>' . __( 'You need a higher level of permission.' ) . '</h1>' .
    '<p>' . __( 'Sorry, you are not allowed to edit theme options on this site.' ) . '</p>',
    403
  );
}

if ( ! ( current_theme_supports( 'block-template-parts' ) || wp_is_block_theme() ) ) {
  wp_die( __( 'The theme you are currently using is not compatible with the Site Editor.' ) );
}

$is_template_part_editor = isset( $_GET['postType'] ) && 'wp_template_part' === sanitize_key( $_GET['postType'] );
if ( ! wp_is_block_theme() && ! $is_template_part_editor ) {
  wp_die( __( 'The theme you are currently using is not compatible with the Site Editor.' ) );
}


/**
 * Do a server-side redirection if missing `postType` and `postId`
 * query args when visiting Site Editor.
 */
$home_template = _resolve_home_block_template();
if ( $home_template && empty( $_GET['postType'] ) && empty( $_GET['postId'] ) ) {
  if ( ! empty( $_GET['styles'] ) ) {
    $home_template['styles'] = sanitize_key( $_GET['styles'] );
  }
  $redirect_url = add_query_arg(
    $home_template,
    admin_url( 'site-editor.php' )
  );
  wp_safe_redirect( $redirect_url );
  exit;
}

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

// Flag that we're loading the block editor.
$current_screen = get_current_screen();
$current_screen->is_block_editor( true );

// Default to is-fullscreen-mode to avoid jumps in the UI.
add_filter(
  'admin_body_class',
  static function( $classes )  < {
    return "$classes is-fullscreen-mode";
  }
);

$indexed_template_types = array();
foreach ( get_default_block_template_types() as $slug => $template_type ) {
  $template_type['slug']    = (string) $slug;
  $indexed_template_types[] = $template_type;
}

$block_editor_context = new WP_Block_Editor_Context( array( 'name' => 'core/edit-site' ) );
$custom_settings      = array(
  'siteUrl'                   => site_url(),
  'postsPerPage'              => get_option( 'posts_per_page' ),
  'styles'                    => get_block_editor_theme_styles(),
  'defaultTemplateTypes'      => $indexed_template_types,
  'defaultTemplatePartAreas'  => get_allowed_block_template_part_areas(),
  'supportsLayout'            => WP_Theme_JSON_Resolver::theme_has_support(),
  'supportsTemplatePartsMode' => ! wp_is_block_theme() && current_theme_supports( 'block-template-parts' ),
  '__unstableHomeTemplate'    => $home_template,
);


/**
 * Home template resolution is not needed when block template parts are supported.
 * Set the value to `true` to satisfy the editor initialization guard clause.
 */
if ( $custom_settings['supportsTemplatePartsMode'] ) {
  $custom_settings['__unstableHomeTemplate'] = true;
}

// Add additional back-compat patterns registered by `current_screen` et al.
$custom_settings['__experimentalAdditionalBlockPatterns']          = WP_Block_Patterns_Registry::get_instance()->get_all_registered( true );
$custom_settings['__experimentalAdditionalBlockPatternCategories'] = WP_Block_Pattern_Categories_Registry::get_instance()->get_all_registered( true );

$editor_settings = get_block_editor_settings( $custom_settings, $block_editor_context );

if ( isset( $_GET['postType'] ) && ! isset( $_GET['postId'] ) ) {

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