<?php

/**

 * Server-side rendering of the `core/site-title` block.

 *

 * @package WordPress

 */

/**

 * Renders the `core/site-title` block on the server.

 *

 * @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';

	$align_class_name = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";

	$aria_current = is_home() || ( is_front_page() && 'page' === get_option( 'show_on_front' ) ) ? ' aria-current="page"' : '';

	if ( isset( $attributes['level'] ) ) {

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

	}

	if ( $attributes['isLink'] ) {

		$link_attrs = array(

			'href="' . esc_url( get_bloginfo( 'url' ) ) . '"',

			'rel="' . esc_attr( 'home' ) . '"',

			$aria_current,

		);

		if ( '_blank' === $attributes['linkTarget'] ) {

			$link_attrs[] = 'target="_blank"';

		}

		$site_title = sprintf( '<a %1$s>%2$s</a>', implode( ' ', $link_attrs ), esc_html( $site_title ) );

	}

	$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,

		// 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.

 */

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' );