<?php
/**
 * Created by PhpStorm.
 * User: chatfeed
 * Date: 2022/5/25
 * Time: 7:28 PM
 */

namespace common\helpers;

use admin\exceptions\ApiException;

/**
 * ID加前缀，偏移真实ID
 */
class FakeId
{
    //店员DY，供应商GY，药店YI，业务员XS,用户YH,市场专员ZY 药店账号 限2位字符
    private static $offset = ['DY'=>612155,'GY'=>215851,'YD'=>721143,'XS'=>116555,'YH'=>135435,'ZY'=> 123456];

    public static function encodeId($type,$id){
        if(!isset(self::$offset[$type])){
            throw new ApiException("{$type}类型不存在");
        }
        return $type.($id+self::$offset[$type]);
    }

    public static function decodeId($id){
        if(!$id){
            return 0;
        }
        preg_match('/([A-Z]{2})(\d+)/s',$id,$macths);
        if(!isset($macths[1]) || !isset(self::$offset[$macths[1]])){
            throw new ApiException("{$macths[1]}类型不存在");
        }
        ;
        return (int)$macths[2]-self::$offset[$macths[1]];
    }

}