<?php

namespace common\components;

use Yii;
use yii\base\Component;
use yii\base\InvalidConfigException;
use common\traits\BaseAction;

/**
 * 自定义服务组件
 * @Author bing
 * @DateTime 2021-08-11 16:43:49
 * @copyright: Copyright (c) 2020 广东七件事集团
 */
class Service extends Component
{

    // 子服务
    public $childService;
    // 已实例化的子服务
    protected $_childService;
    
    /**
     * 获取 services 里面配置的子服务 childService 的实例
     * @Author bing
     * @DateTime 2021-08-11 16:44:58
     * @copyright: Copyright (c) 2020 广东七件事集团
     * @param [type] $childServiceName
     * @throws InvalidConfigException
     * @return mixed
     */
    protected function getChildService($childServiceName)
    {
        if (!isset($this->_childService[$childServiceName])) {
            $childService = $this->childService;
            if (isset($childService[$childServiceName])) {
                $service = $childService[$childServiceName];
                $this->_childService[$childServiceName] = Yii::createObject($service);
            } else {
                throw new InvalidConfigException('未找到 [' . $childServiceName . '] 此子模块 ' . get_called_class() . ', 需要先进行配置! ');
            }
        }
        return $this->_childService[$childServiceName] ?? null;
    }

    /**
     * 魔术方法获取子服务
     * @Author bing
     * @DateTime 2021-08-11 16:45:57
     * @copyright: Copyright (c) 2020 广东七件事集团
     * @param [type] $attr
     * @return mixed
     * @throws InvalidConfigException
     */
    public function __get($attr)
    {
        return $this->getChildService($attr);
    }
}