<?php

/**

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

 *

 * @package WordPress

 */

/**

 * Renders the `core/calendar` block on server.

 *

 * @param array $attributes The block attributes.

 *

 * @return string Returns the block content.

 */

function render_block_core_calendar( $attributes ) {

	global $monthnum, $year;

	$previous_monthnum = $monthnum;

	$previous_year     = $year;

	if ( isset( $attributes['month'] ) && isset( $attributes['year'] ) ) {

		$permalink_structure = get_option( 'permalink_structure' );

		if (

			strpos( $permalink_structure, '%monthnum%' ) !== false &&

			strpos( $permalink_structure, '%year%' ) !== false

		) {

			// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited

			$monthnum = $attributes['month'];

			// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited

			$year = $attributes['year'];

		}

	}

	$custom_class_name = empty( $attributes['className'] ) ? '' : ' ' . $attributes['className'];

	$align_class_name  = empty( $attributes['align'] ) ? '' : ' ' . "align{$attributes['align']}";

		'<div class="%1$s">%2$s</div>',

		esc_attr( 'wp-block-calendar' . $custom_class_name . $align_class_name ),

		get_calendar( true, false )

	);

	// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited

	$monthnum = $previous_monthnum;

	// phpcs:ignore WordPress.WP.GlobalVariablesOverride.OverrideProhibited

	$year = $previous_year;

}

/**

 * Registers the `core/calendar` block on server.

 */

function register_block_core_calendar() {

		array(

			'render_callback' => 'render_block_core_calendar',

		)

	);

}

add_action( 'init', 'register_block_core_calendar' );