<?php 
/** 
 * Server-side rendering of the `core/avatar` block. 
 * 
 * @package WordPress 
 */ 
 
/** 
 * Renders the `core/avatar` 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 avatar. 
 */ 
function render_block_core_avatar( $attributes, $content, $block ) { 
    $size               = isset( $attributes['size'] ) ? $attributes['size'] : 96; 
    $wrapper_attributes = get_block_wrapper_attributes(); 
    $border_attributes  = get_block_core_avatar_border_attributes( $attributes ); 
 
    // Class gets passed through `esc_attr` via `get_avatar`. 
    $image_classes = ! empty( $border_attributes['class'] ) 
        ? "wp-block-avatar__image {$border_attributes['class']}" 
        : 'wp-block-avatar__image'; 
 
    // Unlike class, `get_avatar` doesn't filter the styles via `esc_attr`. 
    // The style engine does pass the border styles through 
    // `safecss_filter_attr` however. 
    $image_styles = ! empty( $border_attributes['style'] ) 
        ? sprintf( ' style="%s"', esc_attr( $border_attributes['style'] ) ) 
        : ''; 
 
    if ( ! isset( $block->context['commentId'] ) ) { 
        if ( isset( $attributes['userId'] ) ) { 
            $author_id = $attributes['userId']; 
        } elseif ( isset( $block->context['postId'] ) ) { 
            $author_id = get_post_field( 'post_author', $block->context['postId'] ); 
        } else { 
            $author_id = get_query_var( 'author' ); 
        } 
 
        if ( empty( $author_id ) ) { 
            return ''; 
        } 
 
        $author_name = get_the_author_meta( 'display_name', $author_id ); 
        // translators: %s: Author name. 
        $alt          = sprintf( __( '%s Avatar' ), $author_name ); 
        $avatar_block = get_avatar( 
            $author_id, 
            $size, 
            '', 
            $alt, 
            array( 
                'extra_attr' => $image_styles, 
                'class'      => $image_classes, 
            ) 
        ); 
        if ( isset( $attributes['isLink'] ) && $attributes['isLink'] ) { 
            $label = ''; 
            if ( '_blank' === $attributes['linkTarget'] ) { 
                // translators: %s is the Author name. 
                $label = 'aria-label="' . esc_attr( sprintf( __( '(%s author archive, opens in a new tab)' ), $author_name ) ) . '"'; 
            } 
            // translators: 1: Author archive link. 2: Link target. %3$s Aria label. %4$s Avatar image. 
            $avatar_block = sprintf( '<a href="%1$s" target="%2$s" %3$s class="wp-block-avatar__link">%4$s</a>', esc_url( get_author_posts_url( $author_id ) ), esc_attr( $attributes['linkTarget'] ), $label, $avatar_block ); 
        } 
        return sprintf( '<div %1s>%2s</div>', $wrapper_attributes, $avatar_block ); 
    } 
    $comment = get_comment( $block->context['commentId'] ); 
    if ( ! $comment ) { 
        return ''; 
    } 
    /* translators: %s: Author name. */ 
    $alt          = sprintf( __( '%s Avatar' ), $comment->comment_author ); 
    $avatar_block = get_avatar( 
        $comment, 
        $size, 
        '', 
        $alt, 
        array( 
            'extra_attr' => $image_styles, 
            'class'      => $image_classes, 
        ) 
    ); 
    if ( isset( $attributes['isLink'] ) && $attributes['isLink'] && isset( $comment->comment_author_url ) && '' !== $comment->comment_author_url ) { 
        $label = ''; 
        if ( '_blank' === $attributes['linkTarget'] ) { 
            // translators: %s: Comment author name. 
            $label = 'aria-label="' . esc_attr( sprintf( __( '(%s website link, opens in a new tab)' ), $comment->comment_author ) ) . '"'; 
        } 
        $avatar_block = sprintf( '<a href="%1$s" target="%2$s" %3$s class="wp-block-avatar__link">%4$s</a>', esc_url( $comment->comment_author_url ), esc_attr( $attributes['linkTarget'] ), $label, $avatar_block ); 
    } 
    return sprintf( '<div %1s>%2s</div>', $wrapper_attributes, $avatar_block ); 
} 
 
/** 
 * Generates class names and styles to apply the border support styles for 
 * the Avatar block. 
 * 
 * @since 6.3.0 
 * 
 * @param array $attributes The block attributes. 
 * @return array The border-related classnames and styles for the block. 
 */ 
function get_block_core_avatar_border_attributes( $attributes ) { 
    $border_styles = array(); 
    $sides         = array( 'top', 'right', 'bottom', 'left' ); 
 
    // Border radius. 
    if ( isset( $attributes['style']['border']['radius'] ) ) { 
        $border_styles['radius'] = $attributes['style']['border']['radius']; 
    } 
 
    // Border style. 
    if ( isset( $attributes['style']['border']['style'] ) ) { 
        $border_styles['style'] = $attributes['style']['border']['style']; 
    } 
 
    // Border width. 
    if ( isset( $attributes['style']['border']['width'] ) ) { 
        $border_styles['width'] = $attributes['style']['border']['width']; 
    } 
 
    // Border color. 
    $preset_color           = array_key_exists( 'borderColor', $attributes ) ? "var:preset|color|{$attributes['borderColor']}" : null; 
    $custom_color           = $attributes['style']['border']['color'] ?? null; 
    $border_styles['color'] = $preset_color ? $preset_color : $custom_color; 
 
    // Individual border styles e.g. top, left etc. 
    foreach ( $sides as $side ) { 
        $border                 = $attributes['style']['border'][ $side ] ?? null; 
        $border_styles[ $side ] = array( 
            'color' => isset( $border['color'] ) ? $border['color'] : null, 
            'style' => isset( $border['style'] ) ? $border['style'] : null, 
            'width' => isset( $border['width'] ) ? $border['width'] : null, 
        ); 
    } 
 
    $styles     = wp_style_engine_get_styles( array( 'border' => $border_styles ) ); 
    $attributes = array(); 
    if ( ! empty( $styles['classnames'] ) ) { 
        $attributes['class'] = $styles['classnames']; 
    } 
    if ( ! empty( $styles['css'] ) ) { 
        $attributes['style'] = $styles['css']; 
    } 
    return $attributes; 
} 
 
/** 
 * Registers the `core/avatar` block on the server. 
 * 
 * @since 6.0.0 
 */ 
function register_block_core_avatar() { 
    register_block_type_from_metadata( 
        __DIR__ . '/avatar', 
        array( 
            'render_callback' => 'render_block_core_avatar', 
        ) 
    ); 
} 
add_action( 'init', 'register_block_core_avatar' ); 
 
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