<?php

const KB = 1024;
const MB = 1048576;
const GB = 1073741824;
const TB = 1099511627776;
const PB = 1125899906842624;

const Minute = 60;
const Hour = 3600;
const Day = 86400;

const Mbps = 125000;

// base64加密（处理URL）
if (! function_exists('base64url_encode')) {
    function base64url_encode($data): string
    {
        return str_replace(['+', '/', '='], ['-', '_', ''], base64_encode($data));
    }
}

// base64解密（处理URL）
if (! function_exists('base64url_decode')) {
    function base64url_decode($data)
    {
        return base64_decode(str_replace(['-', '_'], ['+', '/'], $data));
    }
}

// 根据流量值自动转换单位输出
if (! function_exists('flowAutoShow')) {
    function flowAutoShow($value): string
    {
        $value = abs($value);
        if ($value >= PB) {
            return round($value / PB, 2).'PB';
        }

        if ($value >= TB) {
            return round($value / TB, 2).'TB';
        }

        if ($value >= GB) {
            return round($value / GB, 2).'GB';
        }

        if ($value >= MB) {
            return round($value / MB, 2).'MB';
        }

        if ($value >= KB) {
            return round($value / KB, 2).'KB';
        }

        return round($value, 2).'B';
    }
}

// 秒转时间
if (! function_exists('seconds2time')) {
    function seconds2time($seconds): string
    {
        $day = floor($seconds / Day);
        $hour = floor(($seconds % Day) / Hour);
        $minute = floor((($seconds % Day) % Hour) / Minute);
        if ($day > 0) {
            return $day.trans_choice('validation.attributes.day', 1).$hour.trans_choice('validation.attributes.hour', 1).$minute.trans('validation.attributes.minute');
        }

        if ($hour != 0) {
            return $hour.trans_choice('validation.attributes.hour', 1).$minute.trans('validation.attributes.minute');
        }

        return $minute.trans('validation.attributes.minute');
    }
}

// 过滤emoji表情
if (! function_exists('filterEmoji')) {
    function filterEmoji($str)
    {
        return preg_replace_callback('/./u', static function (array $match) {
            return strlen($match[0]) >= 4 ? '' : $match[0];
        }, $str);
    }
}

// 获取系统设置
if (! function_exists('sysConfig')) {
    function sysConfig($name)
    {
        return config('settings.'.$name);
    }
}

// 字段加密
if (! function_exists('string_encrypt')) {
    function string_encrypt(string $data): string
    {
        return base64url_encode(openssl_encrypt($data, 'aes-128-ctr', hash('sha256', config('app.key')), OPENSSL_RAW_DATA, substr(sha1(config('app.key')), 0, 16)));
    }
}

// 字段解密
if (! function_exists('string_decrypt')) {
    function string_decrypt(string $data): string
    {
        return openssl_decrypt(base64url_decode($data), 'aes-128-ctr', hash('sha256', config('app.key')), OPENSSL_RAW_DATA, substr(sha1(config('app.key')), 0, 16));
    }
}