<?php

namespace App\Extend;

use Hyperf\Context\Context;
use Psr\Http\Message\ServerRequestInterface;
use function Hyperf\Support\env;

class SystemUtil
{
    /**
     * prod 1=生产环境 0=开发环境
     * @return bool
     */
    static function checkProEnv()
    {
        return Env('APP_ENV') == 'prod';
    }

    /**
     * 获取客户端 ip
     * @return mixed|string
     */
    static function getClientIp()
    {
        $request = Context::get(ServerRequestInterface::class);

        $ip_addr = $request->getHeaderLine('x-forwarded-for');
        if (self::verifyIp($ip_addr)) {
            return $ip_addr;
        }

        $ip_addr = $request->getHeaderLine('remote-host');
        if (self::verifyIp($ip_addr)) {
            return $ip_addr;
        }

        $ip_addr = $request->getHeaderLine('x-real-ip');
        if (self::verifyIp($ip_addr)) {
            return $ip_addr;
        }

        $ip_addr = $request->getServerParams()['remote_addr'] ?? '0.0.0.0';
        if (self::verifyIp($ip_addr)) {
            return $ip_addr;
        }

        return '0.0.0.0';
    }

    /**
     * 验证ip
     * @param $realIp
     * @return mixed
     */
    static function verifyIp($realIp): mixed
    {
        return filter_var($realIp, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
    }
}