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

/**
 * Renders the `core/post-date` 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 date for the current post wrapped inside "time" tags.
 */
function gutenberg_render_block_core_post_date( $attributes, $content, $block ) {
	if ( ! isset( $block->context['postId'] ) ) {
		return '';
	}

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

	return sprintf(
		'<div class="%1$s"><time datetime="%2$s">%3$s</time></div>',
		esc_attr( $align_class_name ),
		get_the_date( 'c', $block->context['postId'] ),
		get_the_date( isset( $attributes['format'] ) ? $attributes['format'] : '', $block->context['postId'] )
	);
}

/**
 * Registers the `core/post-date` block on the server.
 */
function gutenberg_register_block_core_post_date() {
	register_block_type_from_metadata(
		__DIR__ . '/post-date',
		array(
			'render_callback' => 'gutenberg_render_block_core_post_date',
		)
	);
}
add_action( 'init', 'gutenberg_register_block_core_post_date', 20 );