<?php
/**
 * 工单系统入口（薄壳）。
 *
 * 只负责单例、REST 注册与配置缓存失效；业务在 TicketRepository /
 * TicketRest / TicketRestAdmin / TicketConfigRest 与各 Service 中。
 *
 * @package AKSRT
 */

namespace AKSRT\Ticket;

defined('ABSPATH') || exit;

final class TicketService {

    private static ?self $instance = null;

    public static function get_instance(): self {
        return self::$instance ??= new self();
    }

    public function init(): void {
        add_action('rest_api_init', [$this, 'register_routes']);
        add_action('aksrt_settings_domain_saved', static function (string $domain, string $section): void {
            if ($domain === 'users' && $section === TicketSettings::SECTION) {
                TicketTypeService::flush();
                TicketStatusService::flush();
            }
        }, 10, 2);
    }

    public function register_routes(): void {
        (new TicketRest())->register_routes();
        (new TicketRestAdmin())->register_routes();
    }

    /** 供后台页与前台模板复用的下拉数据（不经过 REST）。 */
    public static function meta(): array {
        return [
            'types' => TicketTypeService::all(),
            'statuses' => TicketStatusService::all(),
            'prereplies' => TicketPrereplyService::all(),
        ];
    }
}