<?php
namespace common\services;
use Yii;
use common\components\dict;
use common\components\stringUtil;
use common\components\wxUtil;
use common\models\xhTrainStudent;

class xhTrainStudentService {

	public static function getByUserId($userId)
	{
		$preKey			= dict::getCacheKey('xhTrainStudent');
		$cacheKey		= $preKey.$userId;
		$userAsset		= Yii::$app->redis->executeCommand('HGETALL', [$cacheKey]);
		if(!empty($userAsset)){
			$arr		= [];
			$i			= 0;
			$x			= 0;
			foreach($userAsset as $key => $val){
				$i++;
				if($i%2 == 0){
					$arr[$x]['value'] = $val;
					$x++;
				}else{
					$arr[$x]['key'] = $val;
				}
			}
			$userArr		= [];
			foreach($arr as $key => $val){
				$userArr[$val['key']] = $val['value'];
			}
			unset($userArr['info_already_get_by_sql']);
			return $userArr;
		}
		$userAsset			= xhTrainStudent::find()->where(['userId' => $userId])->asArray()->one();
		$params				= [$cacheKey];
		$params[]			= 'info_already_get_by_sql';
		$params[]			= 'ok';//redis没有办法设置带空值的键，加此可以数据空时表示取过
		if(!empty($userAsset)){
			foreach($userAsset as $key => $val){
				$params[] = $key;
				$params[] = $val;
			}
		}
		Yii::$app->redis->executeCommand('HMSET',$params);
		return $userAsset;
	}

	public static function refreshByUserId($userId)
	{
		$cacheKey			= dict::getCacheKey('xhTrainStudent').$userId;
		Yii::$app->redis->executeCommand('DEL', [$cacheKey]);
		self::getByUserId($userId);
	}

	public static function updateByUserId($userId,$data)
	{
		xhTrainStudent::updateByCondition(['userId' => $userId], $data);
		self::refreshByUserId($userId);
	}

	public static function add($data)
	{
		$student 	= xhTrainStudent::add($data);
		$userId		= $student['userId'];
		self::refreshByUserId($userId);
	}

}