<?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_paged() && ( is_front_page() || is_home() && ( (int) get_option( 'page_for_posts' ) !== get_queried_object_id() ) ) ? ' 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' );