<?php

namespace app\mzl\common\traits;

/**
 * 调用服务类的便捷工具
 */
trait ServiceCallTrait
{
    /**
     * 实例缓存
     */
    protected array $serviceCache = [];

    /**
     * 调用指定 Service
     *
     * @param string $serviceClass 服务类名（必须继承 BaseService）
     * @return object
     */
    protected function callService(string $serviceClass): object
    {
        if (!isset($this->serviceCache[$serviceClass])) {
            $this->serviceCache[$serviceClass] = new $serviceClass();
        }
        return $this->serviceCache[$serviceClass];
    }

    /**
     * 快捷调用某服务下某个方法
     *
     * @param string $serviceClass
     * @param string $method
     * @param array  $args
     * @return mixed
     */
    protected function callServiceMethod(string $serviceClass, string $method, array $args = []): mixed
    {
        $service = $this->callService($serviceClass);

        if (!method_exists($service, $method)) {
            throw new \BadMethodCallException("Method {$method} does not exist in {$serviceClass}");
        }

        return call_user_func_array([$service, $method], $args);
    }
}