<?php

/**

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

 *

 * @package WordPress

 */

/**

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

 *

 * @since 5.8.0

 *

 * @param array    $attributes Block attributes.

 * @param string   $content    Block default content.

 * @param WP_Block $block      Block instance.

 * @return string Returns the filtered post content of the current post.

 */

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

	static $seen_ids = array();

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

		return '';

	}

	$post_id = $block->context['postId'];

	if ( isset( $seen_ids[ $post_id ] ) ) {

		// WP_DEBUG_DISPLAY must only be honored when WP_DEBUG. This precedent

		// is set in `wp_debug_mode()`.

		$is_debug = WP_DEBUG && WP_DEBUG_DISPLAY;

		return $is_debug ?

			// translators: Visible only in the front end, this warning takes the place of a faulty block.

			__( '[block rendering halted]' ) :

			'';

	}

	$seen_ids[ $post_id ] = true;

	// When inside the main loop, we want to use queried object

	// so that `the_preview` for the current post can apply.

	// We force this behavior by omitting the third argument (post ID) from the `get_the_content`.

	$content = get_the_content();

	// Check for nextpage to display page links for paginated posts.

	if ( has_block( 'core/nextpage' ) ) {

		$content .= wp_link_pages( array( 'echo' => 0 ) );

	}

	/** This filter is documented in wp-includes/post-template.php */

	$content = apply_filters( 'the_content', str_replace( ']]>', ']]>', $content ) );

	unset( $seen_ids[ $post_id ] );

	if ( empty( $content ) ) {

		return '';

	}

	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => 'entry-content' ) );

	return (

		'<div ' . $wrapper_attributes . '>' .

			$content .

		'</div>'

	);

}

/**

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

 *

 * @since 5.8.0

 */

function register_block_core_post_content() {

	register_block_type_from_metadata(

		__DIR__ . '/post-content',

		array(

			'render_callback' => 'render_block_core_post_content',

		)

	);

}

add_action( 'init', 'register_block_core_post_content' );