1<?php
  2/**
  3 * Server-side rendering of the `core/post-comments-link` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/post-comments-link` block on the server.
 10 *
 11 * @since 6.9.0
 12 *
 13 * @param  array    $attributes Block attributes.
 14 * @param  string   $content    Block default content.
 15 * @param  WP_Block $block      Block instance.
 16 * @return string   Returns the rendered link.
 17 */
 18function render_block_core_post_comments_link( $attributes, $content, $block ) {
 19	if (
 20		! isset( $block->context['postId'] ) ||
 21		isset( $block->context['postId'] ) &&
 22		! comments_open( $block->context['postId'] )
 23	) {
 24		return '';
 25	}
 26
 27	$classes = array();
 28	if ( isset( $attributes['textAlign'] ) ) {
 29		$classes[] = 'has-text-align-' . $attributes['textAlign'];
 30	}
 31	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
 32		$classes[] = 'has-link-color';
 33	}
 34	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
 35	$comments_number    = (int) get_comments_number( $block->context['postId'] );
 36	$comments_link      = get_comments_link( $block->context['postId'] );
 37	$post_title         = get_the_title( $block->context['postId'] );
 38	$comment_html       = '';
 39
 40	if ( 0 === $comments_number ) {
 41		$comment_html = sprintf(
 42			/* translators: %s post title */
 43			__( 'No comments<span class="screen-reader-text"> on %s</span>' ),
 44			$post_title
 45		);
 46	} else {
 47		$comment_html = sprintf(
 48			/* translators: 1: Number of comments, 2: post title */
 49			_n(
 50				'%1$s comment<span class="screen-reader-text"> on %2$s</span>',
 51				'%1$s comments<span class="screen-reader-text"> on %2$s</span>',
 52				$comments_number
 53			),
 54			esc_html( number_format_i18n( $comments_number ) ),
 55			$post_title
 56		);
 57	}
 58
 59	return '<div ' . $wrapper_attributes . '><a href=' . esc_url( $comments_link ) . '>' . $comment_html . '</a></div>';
 60}
 61
 62/**
 63 * Registers the `core/post-comments-link` block on the server.
 64 *
 65 * @since 6.9.0
 66 */
 67function register_block_core_post_comments_link() {
 68	register_block_type_from_metadata(
 69		__DIR__ . '/post-comments-link',
 70		array(
 71			'render_callback' => 'render_block_core_post_comments_link',
 72		)
 73	);
 74}
 75add_action( 'init', 'register_block_core_post_comments_link' );
 76