<?php
namespace QWSpeedCache\Front;

defined( 'ABSPATH' ) || exit;

/**
 * Hover and touch link prefetch for internal URLs.
 */
class HoverPrefetch {

	public function __construct() {
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ) );
	}

	public function enqueue() {
		$s = \QWSpeedCache\Plugin::instance()->get_all_settings();
		if ( empty( $s['hover_prefetch_enabled'] ) ) {
			return;
		}
		if ( is_admin() || ( function_exists( 'is_user_logged_in' ) && is_user_logged_in() && empty( $s['hover_prefetch_logged_in'] ) ) ) {
			return;
		}
		$delay = isset( $s['hover_prefetch_delay'] ) ? max( 0, (int) $s['hover_prefetch_delay'] ) : 65;
		$handle = 'qw-optimize-hover-prefetch';
		wp_enqueue_script( $handle, plugins_url( 'assets/js/hover-prefetch.js', dirname( __DIR__, 2 ) . '/qw-optimize.php' ), array(), QWSC_VERSION, true );
		wp_add_inline_script( $handle, 'window.qwOptimizeHoverPrefetchDelay = ' . wp_json_encode( $delay ) . ';', 'before' );
	}
}