<?php

use app\common\library\EthSign;
use fast\Random;

/**
 * 生成随机hash值
 * @param int $uid
 * @return string
 */
function randTxHash(int $uid): string
{
    return Random::uuid();
}

/**
 * 签名校验
 * @param string $msg
 * @param $sign
 * @param $address
 * @return bool
 */
function checkSign(string $msg, $sign, $address): bool
{
//        return true; // 调试
    if (empty($msg) || empty($sign) || empty($address)) {
        return false;
    }
    $ethSign = new EthSign();
    try {
        return $ethSign->verifySign($msg, $sign, $address);
    } catch (\Exception $e) {
        return false;
    }
}


/**
 * 获取配置
 * @param string $msg
 * @return string
 */
function getConfig(string $name): string
{
    return (new \app\common\model\Config())->where('name', $name)->value('value');
}


/**
 * 获取配置
 * @param string $prefix
 * @return string
 */
function getOrderSN(string $prefix = 'ORD'): string
{  
    return $prefix.date('Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 10);
}