<?php 
/** 
 * Server-side rendering of the `core/site-title` block. 
 * 
 * @package WordPress 
 */ 
 
/** 
 * Renders the `core/site-title` block on the server. 
 * 
 * @since 5.8.0 
 * 
 * @param array $attributes The block attributes. 
 * 
 * @return string The render. 
 */ 
function render_block_core_site_title( $attributes ) { 
    $site_title = get_bloginfo( 'name' ); 
    if ( ! $site_title ) { 
        return; 
    } 
 
    $tag_name = 'h1'; 
    $classes  = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}"; 
    if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) { 
        $classes .= ' has-link-color'; 
    } 
 
    if ( isset( $attributes['level'] ) ) { 
        $tag_name = 0 === $attributes['level'] ? 'p' : 'h' . (int) $attributes['level']; 
    } 
 
    if ( $attributes['isLink'] ) { 
        $aria_current = is_home() || ( is_front_page() && 'page' === get_option( 'show_on_front' ) ) ? ' aria-current="page"' : ''; 
        $link_target  = ! empty( $attributes['linkTarget'] ) ? $attributes['linkTarget'] : '_self'; 
 
        $site_title = sprintf( 
            '<a href="%1$s" target="%2$s" rel="home"%3$s>%4$s</a>', 
            esc_url( home_url() ), 
            esc_attr( $link_target ), 
            $aria_current, 
            esc_html( $site_title ) 
        ); 
    } 
    $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => trim( $classes ) ) ); 
 
    return sprintf( 
        '<%1$s %2$s>%3$s</%1$s>', 
        $tag_name, 
        $wrapper_attributes, 
        // already pre-escaped if it is a link. 
        $attributes['isLink'] ? $site_title : esc_html( $site_title ) 
    ); 
} 
 
/** 
 * Registers the `core/site-title` block on the server. 
 * 
 * @since 5.8.0 
 */ 
function register_block_core_site_title() { 
    register_block_type_from_metadata( 
        __DIR__ . '/site-title', 
        array( 
            'render_callback' => 'render_block_core_site_title', 
        ) 
    ); 
} 
add_action( 'init', 'register_block_core_site_title' ); 
 
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