<?php
/**
* Server-side rendering of the `core/post-author-biography` block.
*
* @package WordPress
*/

/**
* Renders the `core/post-author-biography` 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 Returns the rendered post author biography block.
*/
function render_block_core_post_author_biography( $attributes, $content, $block ) {
if ( 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_biography = get_the_author_meta( 'description', $author_id );
if ( empty( $author_biography ) ) {
return '';
}

$align_class_name = empty( $attributes['textAlign'] ) ? '' : "has-text-align-{$attributes['textAlign']}";
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $align_class_name ) );

return sprintf( '<div %1$s>', $wrapper_attributes ) . $author_biography . '</div>';
}

/**
* Registers the `core/post-author-biography` block on the server.
*
* @since 6.0.0
*/
function register_block_core_post_author_biography() {
register_block_type_from_metadata(
__DIR__ . '/post-author-biography',
array(
'render_callback' => 'render_block_core_post_author_biography',
)
);
}
add_action( 'init', 'register_block_core_post_author_biography' );