<?php

/**

 * The block editor page.

 *

 * @since 5.0.0

 *

 * @package WordPress

 * @subpackage Administration

 */

// Don't load directly.

if ( ! defined( 'ABSPATH' ) ) {

	die( '-1' );

}

/**

 * @global string       $post_type

 * @global WP_Post_Type $post_type_object

 * @global WP_Post      $post             Global post object.

 * @global string       $title

 * @global array        $wp_meta_boxes

 */

// Flag that we're loading the block editor.

$current_screen = get_current_screen();

$current_screen->is_block_editor( true );

/*

 * Emoji replacement is disabled for now, until it plays nicely with React.

 */

remove_action( 'admin_print_scripts', 'print_emoji_detection_script' );

wp_enqueue_script( 'heartbeat' );

wp_enqueue_script( 'wp-edit-post' );

$rest_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;

// Preload common data.

$preload_paths = array(

	'/',

	'/wp/v2/types?context=edit',

	'/wp/v2/taxonomies?per_page=-1&context=edit',

	'/wp/v2/themes?status=active',

	sprintf( '/wp/v2/%s/%s?context=edit', $rest_base, $post->ID ),

	sprintf( '/wp/v2/types/%s?context=edit', $post_type ),

	sprintf( '/wp/v2/users/me?post_type=%s&context=edit', $post_type ),

	array( '/wp/v2/media', 'OPTIONS' ),

	array( '/wp/v2/blocks', 'OPTIONS' ),

	sprintf( '/wp/v2/%s/%d/autosaves?context=edit', $rest_base, $post->ID ),

);

wp_add_inline_script(

	'wp-blocks',

	sprintf( 'wp.blocks.setCategories( %s );', wp_json_encode( get_block_categories( $post ) ) ),

	'after'

);

/*

 * Assign initial edits, if applicable. These are not initially assigned to the persisted post,

 * but should be included in its save payload.

 */

$initial_edits = null;

$is_new_post   = false;

if ( 'auto-draft' === $post->post_status ) {

	$is_new_post = true;

	// Override "(Auto Draft)" new post default title with empty string, or filtered value.

	$initial_edits = array(

		'title'   => $post->post_title,

		'content' => $post->post_content,

		'excerpt' => $post->post_excerpt,

	);

}

// Preload server-registered block schemas.

wp_add_inline_script(

	'wp-blocks',

	'wp.blocks.unstable__bootstrapServerSideBlockDefinitions(' . wp_json_encode( get_block_editor_server_block_settings() ) . ');'

);

// Get admin url for handling meta boxes.

$meta_box_url = admin_url( 'post.php' );

$meta_box_url = add_query_arg(

	array(

		'post'                  => $post->ID,

		'action'                => 'edit',

		'meta-box-loader'       => true,

		'meta-box-loader-nonce' => wp_create_nonce( 'meta-box-loader' ),

	),

	$meta_box_url

);

/*

 * Get all available templates for the post/page attributes meta-box.

 * The "Default template" array element should only be added if the array is

 * not empty so we do not trigger the template select element without any options

 * besides the default value.

 */

$available_templates = wp_get_theme()->get_page_templates( get_post( $post->ID ) );

	array(

		/** This filter is documented in wp-admin/includes/meta-boxes.php */

		'' => apply_filters( 'default_page_template_title', __( 'Default template' ), 'rest-api' ),

	),

	$available_templates

) : $available_templates;

// Lock settings.

$user_id = wp_check_post_lock( $post->ID );

if ( $user_id ) {

	$locked = false;

	/** This filter is documented in wp-admin/includes/post.php */

	if ( apply_filters( 'show_post_locked_dialog', true, $post, $user_id ) ) {

		$locked = true;

	}

	$user_details = null;

	if ( $locked ) {

		$user         = get_userdata( $user_id );

		$user_details = array(

			'name' => $user->display_name,

		);

		$avatar       = get_avatar_url( $user_id, array( 'size' => 64 ) );

	}

	$lock_details = array(

		'isLocked' => $locked,

		'user'     => $user_details,

	);

} else {

	// Lock the post.

	$active_post_lock = wp_set_post_lock( $post->ID );

	if ( $active_post_lock ) {

		$active_post_lock = esc_attr( implode( ':', $active_post_lock ) );

	}

	$lock_details = array(

		'isLocked'       => false,

		'activePostLock' => $active_post_lock,

	);

}

/**

 * Filters the body placeholder text.

 *

 * @since 5.0.0

 *

 * @param WP_Post $post Post object.

 */

$editor_settings = array(

	'availableTemplates'                   => $available_templates,

	'disablePostFormats'                   => ! current_theme_supports( 'post-formats' ),

	/** This filter is documented in wp-admin/edit-form-advanced.php */

	'titlePlaceholder'                     => apply_filters( 'enter_title_here', __( 'Add title' ), $post ),

	'bodyPlaceholder'                      => $body_placeholder,

	'autosaveInterval'                     => AUTOSAVE_INTERVAL,

	'richEditingEnabled'                   => user_can_richedit(),

	'postLock'                             => $lock_details,

	'postLockUtils'                        => array(

		'nonce'       => wp_create_nonce( 'lock-post_' . $post->ID ),

		'unlockNonce' => wp_create_nonce( 'update-post_' . $post->ID ),

		'ajaxUrl'     => admin_url( 'admin-ajax.php' ),

	),

	'__experimentalBlockPatterns'          => WP_Block_Patterns_Registry::get_instance()->get_all_registered(),

	'__experimentalBlockPatternCategories' => WP_Block_Pattern_Categories_Registry::get_instance()->get_all_registered(),

	// Whether or not to load the 'postcustom' meta box is stored as a user meta

	// field so that we're not always loading its assets.

	'enableCustomFields'                   => (bool) get_user_meta( get_current_user_id(), 'enable_custom_fields', true ),

);

if ( $autosave ) {

	if ( mysql2date( 'U', $autosave->post_modified_gmt, false ) > mysql2date( 'U', $post->post_modified_gmt, false ) ) {

		$editor_settings['autosave'] = array(

			'editLink' => get_edit_post_link( $autosave->ID ),

		);

	} else {

		wp_delete_post_revision( $autosave->ID );

	}

}

if ( ! empty( $post_type_object->template ) ) {

	$editor_settings['template']     = $post_type_object->template;

	$editor_settings['templateLock'] = ! empty( $post_type_object->template_lock ) ? $post_type_object->template_lock : false;

}

// If there's no template set on a new post, use the post format, instead.

if ( $is_new_post && ! isset( $editor_settings['template'] ) && 'post' === $post->post_type ) {

	$post_format = get_post_format( $post );

	if ( in_array( $post_format, array( 'audio', 'gallery', 'image', 'quote', 'video' ), true ) ) {

		$editor_settings['template'] = array( array( "core/$post_format" ) );

	}

}

/**

 * Scripts

 */

wp_enqueue_media(

	array(

		'post' => $post->ID,

	)

);

wp_tinymce_inline_scripts();

wp_enqueue_editor();

/**

 * Styles

 */

wp_enqueue_style( 'wp-edit-post' );

/**

 * Fires after block assets have been enqueued for the editing interface.

 *

 * Call `add_action` on any hook before 'admin_enqueue_scripts'.

 *

 * In the function call you supply, simply use `wp_enqueue_script` and

 * `wp_enqueue_style` to add your functionality to the block editor.

 *

 * @since 5.0.0

 */

do_action( 'enqueue_block_editor_assets' );

// In order to duplicate classic meta box behaviour, we need to run the classic meta box actions.

require_once ABSPATH . 'wp-admin/includes/meta-boxes.php';

register_and_do_post_meta_boxes( $post );

// Check if the Custom Fields meta box has been removed at some point.

$core_meta_boxes = $wp_meta_boxes[ $current_screen->id ]['normal']['core'];

if ( ! isset( $core_meta_boxes['postcustom'] ) || ! $core_meta_boxes['postcustom'] ) {

	unset( $editor_settings['enableCustomFields'] );

}

$init_script = <<<JS

( function() {

	window._wpLoadBlockEditor = new Promise( function( resolve ) {

		wp.domReady( function() {

			resolve( wp.editPost.initializeEditor( 'editor', "%s", %d, %s, %s ) );

		} );

	} );

} )();

JS;

$script = sprintf(

	$init_script,

	$post->post_type,

	$post->ID,

	wp_json_encode( $editor_settings ),

	wp_json_encode( $initial_edits )

);

wp_add_inline_script( 'wp-edit-post', $script );

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

?>

<div class="block-editor">

	<h1 class="screen-reader-text hide-if-no-js"><?php echo esc_html( $title ); ?></h1>

	<div id="editor" class="block-editor__container hide-if-no-js"></div>

	<div id="metaboxes" class="hidden">

		<?php the_block_editor_meta_boxes(); ?>

	</div>

	<?php // JavaScript is disabled. ?>

	<div class="wrap hide-if-js block-editor-no-js">

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

		<div class="notice notice-error notice-alt">

			<p>

				<?php

					$message = sprintf(

						/* translators: %s: A link to install the Classic Editor plugin. */

						__( 'The block editor requires JavaScript. Please enable JavaScript in your browser settings, or try the <a href="%s">Classic Editor plugin</a>.' ),

						esc_url( wp_nonce_url( self_admin_url( 'plugin-install.php?tab=favorites&user=wordpressdotorg&save=0' ), 'save_wporg_username_' . get_current_user_id() ) )

					);

					/**

					 * Filters the message displayed in the block editor interface when JavaScript is

					 * not enabled in the browser.

					 *

					 * @since 5.0.3

					 *

					 * @param string  $message The message being displayed.

					 * @param WP_Post $post    The post being edited.

					 */

					echo apply_filters( 'block_editor_no_javascript_message', $message, $post );

					?>

			</p>

		</div>

	</div>

</div>