<?php
/**
 * Server-side rendering of the `core/query-title` block.
 *
 * @package WordPress
 */

/**
 * Renders the `core/query-title` block on the server.
 * For now it supports Archive title, Search title, and Post Type Label,
 * using queried object information
 *
 * @since 5.8.0
 *
 * @param array  $attributes Block attributes.
 * @param array  $_content   Block content.
 * @param object $block      Block instance.
 *
 * @return string Returns the query title based on the queried object.
 */
function render_block_core_query_title( $attributes, $content, $block ) {
    $type       = $attributes['type'] ?? null;
    $is_archive = is_archive();
    $is_search  = is_search();
    $post_type  = $block->context['query']['postType'] ?? get_post_type();

    if ( ! $type ||
        ( 'archive' === $type && ! $is_archive ) ||
        ( 'search' === $type && ! $is_search ) ||
        ( 'post-type' === $type && ! $post_type )
    ) {
        return '';
    }
    $title = '';
    if ( $is_archive ) {
        $show_prefix = $attributes['showPrefix'] ?? true;
        if ( ! $show_prefix ) {
            add_filter( 'get_the_archive_title_prefix', '__return_empty_string', 1 );
            $title = get_the_archive_title();
            remove_filter( 'get_the_archive_title_prefix', '__return_empty_string', 1 );
        } else {
            $title = get_the_archive_title();
        }
    }
    if ( $is_search ) {
        $title = __( 'Search results' );

        if ( isset( $attributes['showSearchTerm'] ) && $attributes['showSearchTerm'] ) {
            $title = sprintf(
                /* translators: %s is the search term. */
                __( 'Search results for: &#8220;%s&#8221;' ),
                get_search_query()
            );
        }
    }
    if ( 'post-type' === $type ) {
        $post_type_object = get_post_type_object( $post_type );

        if ( ! $post_type_object ) {
            return '';
        }

        $post_type_name = $post_type_object->labels->singular_name;
        $show_prefix    = $attributes['showPrefix'] ?? true;

        if ( $show_prefix ) {
            $title = sprintf(
                /* translators: %s is the post type name. */
                __( 'Post Type: &#8220;%s&#8221;' ),
                $post_type_name
            );
        } else {
            $title = $post_type_name;
        }
    }

    $level    = (int) ( $attributes['level'] ?? 1 );
    $tag_name = 0 === $level ? 'p' : 'h' . $level;

    $align_class_name   = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
    $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );
    return sprintf(
        '<%1$s %2$s>%3$s</%1$s>',
        $tag_name,
        $wrapper_attributes,
        $title
    );
}

/**
 * Registers the `core/query-title` block on the server.
 *
 * @since 5.8.0
 */
function register_block_core_query_title() {
    register_block_type_from_metadata(
        __DIR__ . '/query-title',
        array(
            'render_callback' => 'render_block_core_query_title',
        )
    );
}
add_action( 'init', 'register_block_core_query_title' );