<?php
/**
 * Widget_Cache API
 *
 * Cache for Widget instances
 *
 * Class in ALPHA testing
 *
 * @link www.italystrap.com
 * @since 2.4.0
 *
 * @package ItalyStrap
 */

namespace ItalyStrap\Widgets;

/**
 * Widget_Cache
 */
class Widget_Cache {

	/**
	 * Get cached widget.
	 *
	 * @return bool true   If the widget is cached otherwise false
	 */
	public function get_cached_widget() {

		$cache = wp_cache_get( apply_filters( "italystrap_cached_{$this->id}", $this->id ), 'widget' );

		if ( ! is_array( $cache ) ) {
			$cache = array();
		}

		if ( isset( $cache[ $this->id ] ) ) {
			echo $cache[ $this->id ]; // XSS ok.
			return true;
		}

		return false;
	}

	/**
	 * Cache the widget.
	 *
	 * @param  array  $args     The argumento of widget class.
	 * @param  string $content The content of the widget to display.
	 * @return string          The content that was cached
	 */
	public function cache_widget( $args, $content ) {

		wp_cache_set( apply_filters( "italystrap_cached_{$this->id}", $this->id ), array( $this->id => $content ), 'widget' );

		return $content;
	}

	/**
	 * Flush the cache.
	 */
	public function flush_widget_cache() {

		wp_cache_delete( apply_filters( "italystrap_cached_{$this->id}", $this->id ), 'widget' );
	}
}