public static function get_local_woo_plugins() {
		if ( ! function_exists( 'get_plugins' ) ) {
			require_once ABSPATH . 'wp-admin/includes/plugin.php';
		}

		$plugins = get_plugins();

		/**
		 * Check if plugins have WC headers, if not then clear cache and fetch again.
		 * WC Headers will not be present if `wc_enable_wc_plugin_headers` hook was added after a `get_plugins` call -- for example when WC is activated/updated.
		 * Also, get_plugins call is expensive so we should clear this cache very conservatively.
		 */
		if ( ! empty( $plugins ) && ! array_key_exists( 'Woo', current( $plugins ) ) ) {
			wp_clean_plugins_cache( false );
			$plugins = get_plugins();
		}

		$woo_plugins = array();

		// Backwards compatibility for woothemes_queue_update().
		$_compat = array();
		if ( ! empty( $GLOBALS['woothemes_queued_updates'] ) ) {
			foreach ( $GLOBALS['woothemes_queued_updates'] as $_compat_plugin ) {
				$_compat[ $_compat_plugin->file ] = array(
					'product_id' => $_compat_plugin->product_id,
					'file_id'    => $_compat_plugin->file_id,
				);
			}
		}

		foreach ( $plugins as $filename => $data ) {
			if ( empty( $data['Woo'] ) && ! empty( $_compat[ $filename ] ) ) {
				$data['Woo'] = sprintf( '%d:%s', $_compat[ $filename ]['product_id'], $_compat[ $filename ]['file_id'] );
			}

			if ( empty( $data['Woo'] ) ) {
				continue;
			}

			list( $product_id, $file_id ) = explode( ':', $data['Woo'] );
			if ( empty( $product_id ) || empty( $file_id ) ) {
				continue;
			}

			$data['_filename']        = $filename;
			$data['_product_id']      = absint( $product_id );
			$data['_file_id']         = $file_id;
			$data['_type']            = 'plugin';
			$data['slug']             = dirname( $filename );
			$woo_plugins[ $filename ] = $data;
		}

		return $woo_plugins;
	}