<?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' );