<?php
/**
 * Frontend asset loading.
 *
 * Assets are registered and enqueued only on single variable-product pages,
 * where the builder can actually render.
 *
 * @package Bulkora
 */

namespace Bulkora;

defined( 'ABSPATH' ) || exit;

/**
 * Loads the builder styles and scripts where they are needed.
 */
class Assets {

	const STYLE_HANDLE  = 'bulkora-builder';
	const SCRIPT_HANDLE = 'bulkora-builder';

	/**
	 * Settings repository.
	 *
	 * @var Settings
	 */
	private $settings;

	/**
	 * Constructor.
	 *
	 * @param Settings $settings Settings repository.
	 */
	public function __construct( Settings $settings ) {
		$this->settings = $settings;
	}

	/**
	 * Register the plugin hooks. Only called when WooCommerce is active.
	 *
	 * @return void
	 */
	public function register_hooks() {
		add_action( 'wp_enqueue_scripts', array( $this, 'enqueue_frontend' ) );
	}

	/**
	 * Enqueue the builder assets on variable product pages.
	 *
	 * @return void
	 */
	public function enqueue_frontend() {
		if ( ! function_exists( 'is_product' ) || ! is_product() ) {
			return;
		}

		if ( ! (bool) $this->settings->get( Settings::GROUP_GENERAL, 'enabled', true ) ) {
			return;
		}

		$product = wc_get_product( get_queried_object_id() );

		if ( ! $product || ! $product->is_type( 'variable' ) ) {
			return;
		}

		$this->enqueue();
	}

	/**
	 * Register and enqueue the builder styles and script.
	 *
	 * Safe to call more than once and from anywhere in the request — the
	 * shortcode uses it when the builder is not placed by a product template.
	 * Late-enqueued styles are printed by WordPress in the footer.
	 *
	 * @return void
	 */
	public function enqueue() {
		wp_enqueue_style(
			self::STYLE_HANDLE,
			BULKORA_ASSETS_URL . 'css/bulkora.css',
			array(),
			Plugin::asset_version( 'css/bulkora.css' )
		);

		wp_enqueue_script(
			self::SCRIPT_HANDLE,
			BULKORA_ASSETS_URL . 'js/bulkora.js',
			array(),
			Plugin::asset_version( 'js/bulkora.js' ),
			true
		);
	}
}