<?php

namespace App\Tools;
use Godruoyi\Snowflake\Snowflake;
use Illuminate\Support\Str;

class Tools
{
    //雪花算法生成唯一ID
    public static function genSnowflakeId($prefix = ''): string
    {
        $oSnowflake = new Snowflake();
        return $prefix.$oSnowflake->id();
    }

    //生成随机数
    public static function generateRandStr($length = 8)
    {
        $chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789=-+';
        $str = '';
        for ($i = 0; $i < $length; $i++) {
            $str .= $chars[mt_rand(0, strlen($chars) - 1)];
        }
        return $str;
    }

    static function filterDataParams($aData, $aParams)
    {
        foreach ($aParams as $sParam) {
            if (isset($aData[$sParam])) {
                $aData[$sParam] = self::hideStr($aData[$sParam]);
            }
        }
        return $aData;
    }

    //字符串敏感部分中间隐藏
    static function hideStr($sStr, $iStart = 5, $iEnd = 3, $sReplace = '*')
    {
        if (empty($sStr)) return $sStr;
        $iStrLen = mb_strlen($sStr);
        if ($iStrLen <= $iStart) return $sStr;
        $iEnd = $iEnd > 0 ? $iEnd : $iStrLen - $iStart;
        $sHideStr = '';
        for ($i = 0; $i < $iEnd; $i++) {
            $sHideStr .= $sReplace;
        }
        return mb_substr($sStr, 0, $iStart) . $sHideStr . mb_substr($sStr, $iStart + $iEnd);
    }

    static function getRandNum(): int
    {
        return rand(100000,999999);
    }

    static function genUuid(): string
    {
        return Str::orderedUuid();
    }

    static function JonsEncode(array $aData): string
    {
        return json_encode($aData, JSON_UNESCAPED_UNICODE);
    }

    static function JonsDecode(string $aData): string
    {
        return json_decode($aData, JSON_UNESCAPED_UNICODE);
    }

    static function getMd5($value,$salt = ''): string
    {
        return md5(md5($value.$salt));
    }


}