<?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' );