<?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 string       $title

 * @global array        $editor_styles

 * @global array        $wp_meta_boxes

 */

global $post_type, $post_type_object, $post, $title, $editor_styles, $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' );

wp_enqueue_script( 'wp-format-library' );

$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' ),

);

/**

 * Preload common data by specifying an array of REST API paths that will be preloaded.

 *

 * Filters the array of paths that will be preloaded.

 *

 * @since 5.0.0

 *

 * @param array  $preload_paths Array of paths to preload.

 * @param object $post          The post resource data.

 */

$preload_paths = apply_filters( 'block_editor_preload_paths', $preload_paths, $post );

/*

 * Ensure the global $post remains the same after API data is preloaded.

 * Because API preloading can call the_content and other filters, plugins

 * can unexpectedly modify $post.

 */

$backup_global_post = $post;

$preload_data = array_reduce(

	$preload_paths,

	'rest_preload_api_request',

	array()

);

// Restore the global $post as it was before API preloading.

$post = $backup_global_post;

wp_add_inline_script(

	'wp-api-fetch',

	sprintf( 'wp.apiFetch.use( wp.apiFetch.createPreloadingMiddleware( %s ) );', wp_json_encode( $preload_data ) ),

	'after'

);

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

);

wp_localize_script( 'wp-editor', '_wpMetaBoxUrl', $meta_box_url );

/*

 * Initialize the editor.

 */

$align_wide    = get_theme_support( 'align-wide' );

$color_palette = current( (array) get_theme_support( 'editor-color-palette' ) );

$font_sizes    = current( (array) get_theme_support( 'editor-font-sizes' ) );

/**

 * Filters the allowed block types for the editor, defaulting to true (all

 * block types supported).

 *

 * @since 5.0.0

 *

 * @param bool|array $allowed_block_types Array of block type slugs, or

 *                                        boolean to enable/disable all.

 * @param object $post                    The post resource data.

 */

$allowed_block_types = apply_filters( 'allowed_block_types', true, $post );

// 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 ) );

$available_templates = ! empty( $available_templates ) ? array_merge(

	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;

// Media settings.

$max_upload_size = wp_max_upload_size();

if ( ! $max_upload_size ) {

	$max_upload_size = 0;

}

// Editor Styles.

$styles = array(

	array(

		'css' => file_get_contents(

			ABSPATH . WPINC . '/css/dist/editor/editor-styles.css'

		),

	),

);

/* Translators: Use this to specify the CSS font family for the default font */

$locale_font_family = esc_html_x( 'Noto Serif', 'CSS Font Family for Editor Font' );

$styles[]           = array(

	'css' => "body { font-family: '$locale_font_family' }",

);

if ( $editor_styles && current_theme_supports( 'editor-styles' ) ) {

	foreach ( $editor_styles as $style ) {

		if ( preg_match( '~^(https?:)?//~', $style ) ) {

			$response = wp_remote_get( $style );

			if ( ! is_wp_error( $response ) ) {

				$styles[] = array(

					'css' => wp_remote_retrieve_body( $response ),

				);

			}

		} else {

			$file = get_theme_file_path( $style );

			if ( is_file( $file ) ) {

				$styles[] = array(

					'css'     => file_get_contents( $file ),

					'baseURL' => get_theme_file_uri( $style ),

				);

			}

		}

	}

}

// Image sizes.

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

$image_size_names = apply_filters(

	'image_size_names_choose',

	array(

		'thumbnail' => __( 'Thumbnail' ),

		'medium'    => __( 'Medium' ),

		'large'     => __( 'Large' ),

		'full'      => __( 'Full Size' ),

	)

);

$available_image_sizes = array();

foreach ( $image_size_names as $image_size_slug => $image_size_name ) {

	$available_image_sizes[] = array(

		'slug' => $image_size_slug,

		'name' => $image_size_name,

	);

}

// 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 );

	$lock_details     = array(

		'isLocked'       => false,

		'activePostLock' => esc_attr( implode( ':', $active_post_lock ) ),

	);

}

/**

 * Filters the body placeholder text.

 *

 * @since 5.0.0

 *

 * @param string  $text Placeholder text. Default 'Start writing or type / to choose a block'.

 * @param WP_Post $post Post object.

 */

$body_placeholder = apply_filters( 'write_your_story', __( 'Start writing or type / to choose a block' ), $post );

$editor_settings = array(

	'alignWide'              => $align_wide,

	'availableTemplates'     => $available_templates,

	'allowedBlockTypes'      => $allowed_block_types,

	'disableCustomColors'    => get_theme_support( 'disable-custom-colors' ),

	'disableCustomFontSizes' => get_theme_support( 'disable-custom-font-sizes' ),

	'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,

	'isRTL'                  => is_rtl(),

	'autosaveInterval'       => AUTOSAVE_INTERVAL,

	'maxUploadFileSize'      => $max_upload_size,

	'allowedMimeTypes'       => get_allowed_mime_types(),

	'styles'                 => $styles,

	'imageSizes'             => $available_image_sizes,

	'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' ),

	),

	// 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 ),

);

$autosave = wp_get_post_autosave( $post_ID );

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 ( false !== $color_palette ) {

	$editor_settings['colors'] = $color_palette;

}

if ( false !== $font_sizes ) {

	$editor_settings['fontSizes'] = $font_sizes;

}

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' );

wp_enqueue_style( 'wp-format-library' );

/**

 * 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'] );

}

/**

 * Filters the settings to pass to the block editor.

 *

 * @since 5.0.0

 *

 * @param array   $editor_settings Default editor settings.

 * @param WP_Post $post            Post being edited.

 */

$editor_settings = apply_filters( 'block_editor_settings', $editor_settings, $post );

$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: Classic Editor plugin URL */

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

						__( 'https://wordpress.org/plugins/classic-editor/' )

					);

					/**

					 * 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>