<?php

/**

 * Server-side rendering of the `core/comments-pagination-numbers` block.

 *

 * @package WordPress

 */

/**

 * Renders the `core/comments-pagination-numbers` 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 pagination numbers for the comments.

 */

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

	// Bail out early if the post ID is not set for some reason.

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

		return '';

	}

	$comment_vars = build_comment_query_vars_from_block( $block );

	$total   = ( new WP_Comment_Query( $comment_vars ) )->max_num_pages;

	$current = ! empty( $comment_vars['paged'] ) ? $comment_vars['paged'] : null;

	// Render links.

	$content = paginate_comments_links(

		array(

			'total'     => $total,

			'current'   => $current,

			'prev_next' => false,

			'echo'      => false,

		)

	);

	if ( empty( $content ) ) {

		return '';

	}

	$wrapper_attributes = get_block_wrapper_attributes();

	return sprintf(

		'<div %1$s>%2$s</div>',

		$wrapper_attributes,

		$content

	);

}

/**

 * Registers the `core/comments-pagination-numbers` block on the server.

 */

function register_block_core_comments_pagination_numbers() {

	register_block_type_from_metadata(

		__DIR__ . '/comments-pagination-numbers',

		array(

			'render_callback' => 'render_block_core_comments_pagination_numbers',

		)

	);

}

add_action( 'init', 'register_block_core_comments_pagination_numbers' );