1<?php
  2/**
  3 * Server-side rendering of the `core/post-date` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/post-date` block on the server.
 10 *
 11 * @since 5.8.0
 12 * @since 6.9.0 Added `datetime` attribute and Block Bindings support.
 13 *
 14 * @param array    $attributes Block attributes.
 15 * @param string   $content    Block default content.
 16 * @param WP_Block $block      Block instance.
 17 * @return string Returns the filtered post date for the current post wrapped inside "time" tags.
 18 */
 19function render_block_core_post_date( $attributes, $content, $block ) {
 20	$classes = array();
 21
 22	if (
 23		! isset( $attributes['datetime'] ) && ! (
 24			isset( $attributes['metadata']['bindings']['datetime']['source'] ) &&
 25			isset( $attributes['metadata']['bindings']['datetime']['args'] )
 26		)
 27	) {
 28		/*
 29		 * This is the legacy version of the block that didn't have the `datetime` attribute.
 30		 * This branch needs to be kept for backward compatibility.
 31		 */
 32		$source = get_block_bindings_source( 'core/post-data' );
 33		if ( isset( $attributes['displayType'] ) && 'modified' === $attributes['displayType'] ) {
 34			$source_args = array(
 35				'field' => 'modified',
 36			);
 37		} else {
 38			$source_args = array(
 39				'field' => 'date',
 40			);
 41		}
 42		$attributes['datetime'] = $source->get_value( $source_args, $block, 'datetime' );
 43	}
 44
 45	if ( isset( $source_args['field'] ) && 'modified' === $source_args['field'] ) {
 46		$classes[] = 'wp-block-post-date__modified-date';
 47	}
 48
 49	if ( empty( $attributes['datetime'] ) ) {
 50		// If the `datetime` attribute is set but empty, it could be because Block Bindings
 51		// set it that way. This can happen e.g. if the block is bound to the
 52		// post's last modified date, and the latter lies before the publish date.
 53		// (See https://github.com/WordPress/gutenberg/pull/46839 where this logic was originally
 54		// implemented.)
 55		// In this case, we have to respect and return the empty value.
 56		return '';
 57	}
 58
 59	$unformatted_date = $attributes['datetime'];
 60	$post_timestamp   = strtotime( $unformatted_date );
 61
 62	if ( isset( $attributes['format'] ) && 'human-diff' === $attributes['format'] ) {
 63		if ( $post_timestamp > time() ) {
 64			// translators: %s: human-readable time difference.
 65			$formatted_date = sprintf( __( '%s from now' ), human_time_diff( $post_timestamp ) );
 66		} else {
 67			// translators: %s: human-readable time difference.
 68			$formatted_date = sprintf( __( '%s ago' ), human_time_diff( $post_timestamp ) );
 69		}
 70	} else {
 71		$format         = empty( $attributes['format'] ) ? get_option( 'date_format' ) : $attributes['format'];
 72		$formatted_date = wp_date( $format, $post_timestamp );
 73	}
 74
 75	if ( isset( $attributes['textAlign'] ) ) {
 76		$classes[] = 'has-text-align-' . $attributes['textAlign'];
 77	}
 78	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
 79		$classes[] = 'has-link-color';
 80	}
 81
 82	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
 83
 84	if ( isset( $attributes['isLink'] ) && $attributes['isLink'] && isset( $block->context['postId'] ) ) {
 85		$formatted_date = sprintf( '<a href="%1s">%2s</a>', get_the_permalink( $block->context['postId'] ), $formatted_date );
 86	}
 87
 88	return sprintf(
 89		'<div %1$s><time datetime="%2$s">%3$s</time></div>',
 90		$wrapper_attributes,
 91		$unformatted_date,
 92		$formatted_date
 93	);
 94}
 95
 96/**
 97 * Registers the `core/post-date` block on the server.
 98 *
 99 * @since 5.8.0
100 */
101function register_block_core_post_date() {
102	register_block_type_from_metadata(
103		__DIR__ . '/post-date',
104		array(
105			'render_callback' => 'render_block_core_post_date',
106		)
107	);
108}
109add_action( 'init', 'register_block_core_post_date' );
110