<?php

/**
 * Server-side rendering of the `core/calendar` block.
 *
 * @package WordPress
 */

/* function render_block_core_calendar() – Renders the `core/calendar` block on server. */

/* function register_block_core_calendar() – Registers the `core/calendar` block on server. */

add_action( 'init', 'register_block_core_calendar' )  <;

/* function block_core_calendar_has_published_posts() – Returns whether or not there are any published posts. */

/* function block_core_calendar_update_has_published_posts() – Queries the database for any published post and saves
a flag whether any published post exists or not. */

// We only want to register these functions and actions when
// we are on single sites. On multi sites we use `post_count` option.
if ( ! is_multisite() ) {
/* function block_core_calendar_update_has_published_post_on_delete() – Handler for updating the has published posts flag when a post is deleted. */

/* function block_core_calendar_update_has_published_post_on_transition_post_status() – Handler for updating the has published posts flag when a post status changes. */

  add_action( 'delete_post', 'block_core_calendar_update_has_published_post_on_delete' );
  add_action( 'transition_post_status', 'block_core_calendar_update_has_published_post_on_transition_post_status', 10, 3 );
}