<?php
/**
 * Classic checkout assets.
 *
 * @package Extrova
 */

declare( strict_types=1 );

namespace Extrova\Classic;

use Extrova\Core\ExtraService;
use Extrova\Goals\GoalService;

defined( 'ABSPATH' ) || exit;

/**
 * Enqueues the small vanilla script and the style only on the classic checkout page and only
 * when there are active extras or goals.
 *
 * @since 1.0.0
 */
final class ClassicAssets {

	public const HANDLE = 'extrova-classic';

	/**
	 * Constructor.
	 *
	 * @param ExtraService $service Engine.
	 * @param GoalService  $goals   Goals.
	 */
	public function __construct(
		private ExtraService $service,
		private GoalService $goals
	) {}

	/**
	 * Enqueues on `wp_enqueue_scripts`.
	 */
	public function enqueue(): void {
		if ( ! function_exists( 'is_checkout' ) || ! is_checkout() || is_wc_endpoint_url( 'order-received' ) || is_wc_endpoint_url( 'order-pay' ) ) {
			return;
		}
		if ( has_block( 'woocommerce/checkout' ) ) {
			return;
		}

		$load = $this->service->has_active_extras( 'checkout_classic' ) || $this->goals->may_have_goals();

		/** This filter is documented in src/Blocks/BlocksIntegration.php */
		if ( ! apply_filters( 'extrova_load_frontend_assets', $load, 'checkout_classic' ) ) {
			return;
		}

		$asset_file = EXTROVA_PATH . 'build/classic-checkout.asset.php';
		if ( ! is_readable( $asset_file ) ) {
			return;
		}
		$asset   = require $asset_file;
		$version = (string) ( $asset['version'] ?? EXTROVA_VERSION );

		wp_enqueue_script(
			self::HANDLE,
			EXTROVA_URL . 'build/classic-checkout.js',
			array_unique( array_merge( (array) ( $asset['dependencies'] ?? array() ), array( 'jquery' ) ) ),
			$version,
			array(
				'in_footer' => true,
				'strategy'  => 'defer',
			)
		);
		wp_set_script_translations( self::HANDLE, 'extrova', EXTROVA_PATH . 'languages' );

		if ( is_readable( EXTROVA_PATH . 'build/classic-checkout.css' ) ) {
			wp_enqueue_style( self::HANDLE, EXTROVA_URL . 'build/classic-checkout.css', array(), $version );
		}
	}
}