1<?php
  2/**
  3 * Server-side rendering of the `core/query-title` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/query-title` block on the server.
 10 * For now it supports Archive title, Search title, and Post Type Label,
 11 * using queried object information
 12 *
 13 * @since 5.8.0
 14 *
 15 * @param array  $attributes Block attributes.
 16 * @param array  $_content   Block content.
 17 * @param object $block      Block instance.
 18 *
 19 * @return string Returns the query title based on the queried object.
 20 */
 21function render_block_core_query_title( $attributes, $content, $block ) {
 22	$type       = isset( $attributes['type'] ) ? $attributes['type'] : null;
 23	$is_archive = is_archive();
 24	$is_search  = is_search();
 25	$post_type  = isset( $block->context['query']['postType'] ) ? $block->context['query']['postType'] : get_post_type();
 26
 27	if ( ! $type ||
 28		( 'archive' === $type && ! $is_archive ) ||
 29		( 'search' === $type && ! $is_search ) ||
 30		( 'post-type' === $type && ! $post_type )
 31	) {
 32		return '';
 33	}
 34	$title = '';
 35	if ( $is_archive ) {
 36		$show_prefix = isset( $attributes['showPrefix'] ) ? $attributes['showPrefix'] : true;
 37		if ( ! $show_prefix ) {
 38			add_filter( 'get_the_archive_title_prefix', '__return_empty_string', 1 );
 39			$title = get_the_archive_title();
 40			remove_filter( 'get_the_archive_title_prefix', '__return_empty_string', 1 );
 41		} else {
 42			$title = get_the_archive_title();
 43		}
 44	}
 45	if ( $is_search ) {
 46		$title = __( 'Search results' );
 47
 48		if ( isset( $attributes['showSearchTerm'] ) && $attributes['showSearchTerm'] ) {
 49			$title = sprintf(
 50				/* translators: %s is the search term. */
 51				__( 'Search results for: "%s"' ),
 52				get_search_query()
 53			);
 54		}
 55	}
 56	if ( 'post-type' === $type ) {
 57		$post_type_object = get_post_type_object( $post_type );
 58
 59		if ( ! $post_type_object ) {
 60			return '';
 61		}
 62
 63		$post_type_name = $post_type_object->labels->singular_name;
 64		$show_prefix    = isset( $attributes['showPrefix'] ) ? $attributes['showPrefix'] : true;
 65
 66		if ( $show_prefix ) {
 67			$title = sprintf(
 68				/* translators: %s is the post type name. */
 69				__( 'Post Type: "%s"' ),
 70				$post_type_name
 71			);
 72		} else {
 73			$title = $post_type_name;
 74		}
 75	}
 76
 77	$level    = isset( $attributes['level'] ) ? (int) $attributes['level'] : 1;
 78	$tag_name = 0 === $level ? 'p' : 'h' . (int) $attributes['level'];
 79
 80	$align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
 81	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
 82	return sprintf(
 83		'<%1$s %2$s>%3$s</%1$s>',
 84		$tag_name,
 85		$wrapper_attributes,
 86		$title
 87	);
 88}
 89
 90/**
 91 * Registers the `core/query-title` block on the server.
 92 *
 93 * @since 5.8.0
 94 */
 95function register_block_core_query_title() {
 96	register_block_type_from_metadata(
 97		__DIR__ . '/query-title',
 98		array(
 99			'render_callback' => 'render_block_core_query_title',
100		)
101	);
102}
103add_action( 'init', 'register_block_core_query_title' );
104