<?php

/**

 * Server-side rendering of the `core/post-terms` block.

 *

 * @package WordPress

 */

/**

 * Renders the `core/post-terms` block on the server.

 *

 * @param array    $attributes Block attributes.

 * @param string   $content    Block default content.

 * @param WP_Block $block      Block instance.

 * @return string Returns the filtered post terms for the current post wrapped inside "a" tags.

 */

function render_block_core_post_terms( $attributes, $content, $block ) {

	if ( ! isset( $block->context['postId'] ) || ! isset( $attributes['term'] ) ) {

		return '';

	}

	if ( ! is_taxonomy_viewable( $attributes['term'] ) ) {

		return '';

	}

	$post_terms = get_the_terms( $block->context['postId'], $attributes['term'] );

	if ( is_wp_error( $post_terms ) || empty( $post_terms ) ) {

		return '';

	}

	$classes = 'taxonomy-' . $attributes['term'];

	if ( isset( $attributes['textAlign'] ) ) {

		$classes .= ' has-text-align-' . $attributes['textAlign'];

	}

	$separator = empty( $attributes['separator'] ) ? ' ' : $attributes['separator'];

	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classes ) );

	return get_the_term_list(

		$block->context['postId'],

		$attributes['term'],

		"<div $wrapper_attributes>",

		'<span class="wp-block-post-terms__separator">' . esc_html( $separator ) . '</span>',

		'</div>'

	);

}

/**

 * Registers the `core/post-terms` block on the server.

 */

function register_block_core_post_terms() {

	register_block_type_from_metadata(

		__DIR__ . '/post-terms',

		array(

			'render_callback' => 'render_block_core_post_terms',

		)

	);

}

add_action( 'init', 'register_block_core_post_terms' );