<?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // disable direct access
}

if ( ! class_exists( 'Mega_Menu_Widget_Reusable_Block' ) ) :

	/**
	 * Outputs a reusable block
	 *
	 * Credit: Based on https://wordpress.org/plugins/block-widget/ by Maarten Menten
	 */
	class Mega_Menu_Widget_Reusable_Block extends WP_Widget {

		/**
		 * Register widget with WordPress.
		 */
		public function __construct() {
			parent::__construct(
				'maxmegamenu_reusable_block', // Base ID
				'Reusable Block (MMM)', // Name
				array( 'description' => __( 'Outputs a reusable block.', 'megamenu' ) ) // Args
			);
		}


		/**
		 * Front-end display of widget.
		 *
		 * @since 2.7.4
		 * @see WP_Widget::widget()
		 * @param array   $args     Widget arguments.
		 * @param array   $instance Saved values from database.
		 */
		public function widget( $args, $instance ) {
			if ( empty( $instance['block'] ) || ! get_post_type( $instance['block'] ) ) {
				return;
			}

			extract( $args );

			echo $before_widget;

			echo do_blocks( get_post_field( 'post_content', $instance['block'] ) );

			echo $after_widget;
		}


		/**
		 * Sanitize widget form values as they are saved.
		 *
		 * @since 2.7.4
		 * @see WP_Widget::update()
		 * @param array   $new_instance Values just sent to be saved.
		 * @param array   $old_instance Previously saved values from database.
		 * @return array Updated safe values to be saved.
		 */
		public function update( $new_instance, $old_instance ) {
			$instance          = array();
			$instance['block'] = ! empty( $new_instance['block'] ) ? $new_instance['block'] : 0;

			return $instance;
		}


		/**
		 * Back-end widget form.
		 *
		 * @since 2.7.4
		 * @see WP_Widget::form()
		 * @param array   $instance Previously saved values from database.
		 */
		public function form( $instance ) {
			$block_id = ! empty( $instance['block'] ) ? absint( $instance['block'] ) : 0;

			$widget_title = $block_id ? get_post_field( 'post_title', $block_id ) : '';

			$posts = get_posts(
				array(
					'post_type'   => 'wp_block',
					'post_status' => 'publish',
					'numberposts' => -1,
				)
			);

			// No blocks found.
			if ( empty( $posts ) ) {
				printf( '<p>%s</p>', __( 'No reusable blocks available.', 'megamenu' ) );

				return;
			}

			// Input field with id is required for WordPress to display the title in the widget header.
			?>
			<input type="hidden" id="<?php echo esc_attr( $this->get_field_id( 'title' ) ); ?>" value="<?php echo esc_attr( $widget_title ); ?>">
		
			<p>
				<label for="<?php echo esc_attr( $this->get_field_id( 'block' ) ); ?>"><?php esc_attr_e( 'Block', 'megamenu' ); ?>:</label> 
				<select id="<?php echo esc_attr( $this->get_field_id( 'block' ) ); ?>" class="widefat" name="<?php echo esc_attr( $this->get_field_name( 'block' ) ); ?>">
					<option value=""><?php esc_html_e( '- Select -', 'megamenu' ); ?></option>
					<?php foreach ( $posts as $post ) : ?>
					<option value="<?php echo esc_attr( $post->ID ); ?>"<?php selected( $post->ID, $block_id ); ?>><?php echo esc_html( $post->post_title ); ?></option>
					<?php endforeach; ?>
				</select>
			</p>

			<?php
		}

	}

endif;
