1<?php
  2/**
  3 * Server-side rendering of the `core/archives` block.
  4 *
  5 * @package WordPress
  6 */
  7
  8/**
  9 * Renders the `core/archives` block on server.
 10 *
 11 * @since 5.0.0
 12 *
 13 * @see WP_Widget_Archives
 14 *
 15 * @param array $attributes The block attributes.
 16 *
 17 * @return string Returns the post content with archives added.
 18 */
 19function render_block_core_archives( $attributes ) {
 20	$show_post_count = ! empty( $attributes['showPostCounts'] );
 21	$type            = isset( $attributes['type'] ) ? $attributes['type'] : 'monthly';
 22
 23	$class = 'wp-block-archives-list';
 24
 25	if ( ! empty( $attributes['displayAsDropdown'] ) ) {
 26
 27		$class = 'wp-block-archives-dropdown';
 28
 29		$dropdown_id = wp_unique_id( 'wp-block-archives-' );
 30		$title       = __( 'Archives' );
 31
 32		/** This filter is documented in wp-includes/widgets/class-wp-widget-archives.php */
 33		$dropdown_args = apply_filters(
 34			'widget_archives_dropdown_args',
 35			array(
 36				'type'            => $type,
 37				'format'          => 'option',
 38				'show_post_count' => $show_post_count,
 39			)
 40		);
 41
 42		$dropdown_args['echo'] = 0;
 43
 44		$archives = wp_get_archives( $dropdown_args );
 45
 46		$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $class ) );
 47
 48		switch ( $dropdown_args['type'] ) {
 49			case 'yearly':
 50				$label = __( 'Select Year' );
 51				break;
 52			case 'monthly':
 53				$label = __( 'Select Month' );
 54				break;
 55			case 'daily':
 56				$label = __( 'Select Day' );
 57				break;
 58			case 'weekly':
 59				$label = __( 'Select Week' );
 60				break;
 61			default:
 62				$label = __( 'Select Post' );
 63				break;
 64		}
 65
 66		$show_label = empty( $attributes['showLabel'] ) ? ' screen-reader-text' : '';
 67
 68		$block_content = '<label for="' . $dropdown_id . '" class="wp-block-archives__label' . $show_label . '">' . esc_html( $title ) . '</label>
 69		<select id="' . esc_attr( $dropdown_id ) . '" name="archive-dropdown">
 70		<option value="">' . esc_html( $label ) . '</option>' . $archives . '</select>';
 71
 72		// Inject the dropdown script immediately after the select dropdown.
 73		$block_content .= block_core_archives_build_dropdown_script( $dropdown_id );
 74
 75		return sprintf(
 76			'<div %1$s>%2$s</div>',
 77			$wrapper_attributes,
 78			$block_content
 79		);
 80	}
 81
 82	/** This filter is documented in wp-includes/widgets/class-wp-widget-archives.php */
 83	$archives_args = apply_filters(
 84		'widget_archives_args',
 85		array(
 86			'type'            => $type,
 87			'show_post_count' => $show_post_count,
 88		)
 89	);
 90
 91	$archives_args['echo'] = 0;
 92
 93	$archives = wp_get_archives( $archives_args );
 94
 95	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $class ) );
 96
 97	if ( empty( $archives ) ) {
 98		return sprintf(
 99			'<div %1$s>%2$s</div>',
100			$wrapper_attributes,
101			__( 'No archives to show.' )
102		);
103	}
104
105	return sprintf(
106		'<ul %1$s>%2$s</ul>',
107		$wrapper_attributes,
108		$archives
109	);
110}
111
112/**
113 * Generates the inline script for an archives dropdown field.
114 *
115 * @since 6.9.0
116 *
117 * @param string $dropdown_id ID of the dropdown field.
118 *
119 * @return string Returns the dropdown onChange redirection script.
120 */
121function block_core_archives_build_dropdown_script( $dropdown_id ) {
122	ob_start();
123
124	$exports = array( $dropdown_id, home_url() );
125	?>
126	<script>
127	( ( [ dropdownId, homeUrl ] ) => {
128		const dropdown = document.getElementById( dropdownId );
129		function onSelectChange() {
130			setTimeout( () => {
131				if ( 'escape' === dropdown.dataset.lastkey ) {
132					return;
133				}
134				if ( dropdown.value ) {
135					location.href = dropdown.value;
136				}
137			}, 250 );
138		}
139		function onKeyUp( event ) {
140			if ( 'Escape' === event.key ) {
141				dropdown.dataset.lastkey = 'escape';
142			} else {
143				delete dropdown.dataset.lastkey;
144			}
145		}
146		function onClick() {
147			delete dropdown.dataset.lastkey;
148		}
149		dropdown.addEventListener( 'keyup', onKeyUp );
150		dropdown.addEventListener( 'click', onClick );
151		dropdown.addEventListener( 'change', onSelectChange );
152	} )( <?php echo wp_json_encode( $exports, JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?> );
153	</script>
154	<?php
155	return wp_get_inline_script_tag(
156		trim( str_replace( array( '<script>', '</script>' ), '', ob_get_clean() ) ) .
157		"\n//# sourceURL=" . rawurlencode( __FUNCTION__ )
158	);
159}
160
161/**
162 * Register archives block.
163 *
164 * @since 5.0.0
165 */
166function register_block_core_archives() {
167	register_block_type_from_metadata(
168		__DIR__ . '/archives',
169		array(
170			'render_callback' => 'render_block_core_archives',
171		)
172	);
173}
174add_action( 'init', 'register_block_core_archives' );
175