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

/**
 * Renders the `core/template-part` block on the server.
 *
 * @param array $attributes The block attributes.
 *
 * @return string The render.
 */
function render_block_core_template_part( $attributes ) {
	static $seen_ids = array();

$template_part_id = null;
	$content          = null;
	$area             = WP_TEMPLATE_PART_AREA_UNCATEGORIZED;
	$theme            = isset( $attributes['theme'] ) ? $attributes['theme'] : get_stylesheet();

if ( isset( $attributes['slug'] ) && get_stylesheet() === $theme ) {
		$template_part_id    = $theme . '//' . $attributes['slug'];
		$template_part_query = new WP_Query(
			array(
				'post_type'           => 'wp_template_part',
				'post_status'         => 'publish',
				'post_name__in'       => array( $attributes['slug'] ),
				'tax_query'           => array(
					array(
						'taxonomy' => 'wp_theme',
						'field'    => 'name',
						'terms'    => $theme,
					),
				),
				'posts_per_page'      => 1,
				'no_found_rows'       => true,
				'lazy_load_term_meta' => false, // Do not lazy load term meta, as template parts only have one term.
			)
		);
		$template_part_post  = $template_part_query->have_posts() ? $template_part_query->next_post() : null;
		if ( $template_part_post ) {
			// A published post might already exist if this template part was customized elsewhere
			// or if it's part of a customized template.
			$block_template = _build_block_template_result_from_post( $template_part_post );
			$content        = $block_template->content;
			if ( isset( $block_template->area ) ) {
				$area = $block_template->area;
			}
			/**
			 * Fires when a block template part is loaded from a template post stored in the database.
			 *
			 * @since 5.9.0
			 *
			 * @param string  $template_part_id   The requested template part namespaced to the theme.
			 * @param array   $attributes         The block attributes.
			 * @param WP_Post $template_part_post The template part post object.
			 * @param string  $content            The template part content.
			 */
			do_action( 'render_block_core_template_part_post', $template_part_id, $attributes, $template_part_post, $content );
		} else {
			$template_part_file_path = '';
			// Else, if the template part was provided by the active theme,
			// render the corresponding file content.
			if ( 0 === validate_file( $attributes['slug'] ) ) {
				$block_template = get_block_file_template( $template_part_id, 'wp_template_part' );

$content = $block_template->content;
				if ( isset( $block_template->area ) ) {
					$area = $block_template->area;
				}

// Needed for the `render_block_core_template_part_file` and `render_block_core_template_part_none` actions below.
				$block_template_file = _get_block_template_file( 'wp_template_part', $attributes['slug'] );
				if ( $block_template_file ) {
					$template_part_file_path = $block_template_file['path'];
				}
			}

if ( '' !== $content && null !== $content ) {
				/**
				 * Fires when a block template part is loaded from a template part in the theme.
				 *
				 * @since 5.9.0
				 *
				 * @param string $template_part_id        The requested template part namespaced to the theme.
				 * @param array  $attributes              The block attributes.
				 * @param string $template_part_file_path Absolute path to the template path.
				 * @param string $content                 The template part content.
				 */
				do_action( 'render_block_core_template_part_file', $template_part_id, $attributes, $template_part_file_path, $content );
			} else {
				/**
				 * Fires when a requested block template part does not exist in the database nor in the theme.
				 *
				 * @since 5.9.0
				 *
				 * @param string $template_part_id        The requested template part namespaced to the theme.
				 * @param array  $attributes              The block attributes.
				 * @param string $template_part_file_path Absolute path to the not found template path.
				 */
				do_action( 'render_block_core_template_