<?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( ']]>', ']]&gt;', $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' );