<?php

/**

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

 *

 * @package WordPress

 */

/**

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

 *

 * @param array    $attributes Block attributes.

 * @param string   $content    Block default content.

 * @param WP_Block $block      Block instance.

 *

 * @return string Returns the filtered post title for the current post wrapped inside "h1" tags.

 */

function render_block_core_post_title( $attributes, $content, $block ) {

	if ( ! isset( $block->context['postId'] ) ) {

		return '';

	}

	$post_ID          = $block->context['postId'];

	$tag_name         = 'h2';

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

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

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

	}

	$title = get_the_title( $post_ID );

	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) {

		$title = sprintf( '<a href="%1s" target="%2s" rel="%3s">%4s</a>', get_the_permalink( $post_ID ), $attributes['linkTarget'], $attributes['rel'], $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,

		$title

	);

}

/**

 * Registers the `core/post-title` block on the server.

 */

function register_block_core_post_title() {

	register_block_type_from_metadata(

		__DIR__ . '/post-title',

		array(

			'render_callback' => 'render_block_core_post_title',

		)

	);

}

add_action( 'init', 'register_block_core_post_title' );