<?php 
/** 
 * Server-side rendering of the `core/comment-reply-link` block. 
 * 
 * @package WordPress 
 */ 
 
/** 
 * Renders the `core/comment-reply-link` block on the server. 
 * 
 * @since 6.0.0 
 * 
 * @param array    $attributes Block attributes. 
 * @param string   $content    Block default content. 
 * @param WP_Block $block      Block instance. 
 * @return string Return the post comment's reply link. 
 */ 
function render_block_core_comment_reply_link( $attributes, $content, $block ) { 
    if ( ! isset( $block->context['commentId'] ) ) { 
        return ''; 
    } 
 
    $thread_comments = get_option( 'thread_comments' ); 
    if ( ! $thread_comments ) { 
        return ''; 
    } 
 
    $comment = get_comment( $block->context['commentId'] ); 
    if ( empty( $comment ) ) { 
        return ''; 
    } 
 
    $depth     = 1; 
    $max_depth = get_option( 'thread_comments_depth' ); 
    $parent_id = $comment->comment_parent; 
 
    // Compute comment's depth iterating over its ancestors. 
    while ( ! empty( $parent_id ) ) { 
        ++$depth; 
        $parent_id = get_comment( $parent_id )->comment_parent; 
    } 
 
    $comment_reply_link = get_comment_reply_link( 
        array( 
            'depth'     => $depth, 
            'max_depth' => $max_depth, 
        ), 
        $comment 
    ); 
 
    // Render nothing if the generated reply link is empty. 
    if ( empty( $comment_reply_link ) ) { 
        return; 
    } 
 
    $classes = array(); 
    if ( isset( $attributes['textAlign'] ) ) { 
        $classes[] = 'has-text-align-' . $attributes['textAlign']; 
    } 
    if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) { 
        $classes[] = 'has-link-color'; 
    } 
 
    $wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) ); 
 
    return sprintf( 
        '<div %1$s>%2$s</div>', 
        $wrapper_attributes, 
        $comment_reply_link 
    ); 
} 
 
/** 
 * Registers the `core/comment-reply-link` block on the server. 
 * 
 * @since 6.0.0 
 */ 
function register_block_core_comment_reply_link() { 
    register_block_type_from_metadata( 
        __DIR__ . '/comment-reply-link', 
        array( 
            'render_callback' => 'render_block_core_comment_reply_link', 
        ) 
    ); 
} 
 
add_action( 'init', 'register_block_core_comment_reply_link' ); 
 
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