<?php

namespace App\Module;

use App\Exceptions\ApiException;
use App\Models\User;
use Carbon\Carbon;
use FFI;

class Doo
{
    private static $doo;

    /**
     * char转为字符串
     * @param $text
     * @return string
     */
    private static function string($text): string
    {
        return FFI::string($text);
    }

    /**
     * 装载
     * @param $token
     * @param $language
     */
    public static function load($token = null, $language = null)
    {
        self::$doo = FFI::cdef(<<<EOF
                void initialize(char* work, char* token, char* lang);
                char* license();
                char* licenseDecode(char* license);
                char* licenseSave(char* license);
                int userId();
                char* userExpiredAt();
                char* userEmail();
                char* userEncrypt();
                char* userToken();
                char* userCreate(char* email, char* password);
                char* tokenEncode(int userid, char* email, char* encrypt, int days);
                char* tokenDecode(char* val);
                char* translate(char* val, char* val);
                char* md5s(char* text, char* password);
                char* macs();
                char* dooSN();
            EOF, "/usr/lib/doo/doo.so");
        $token = $token ?: Base::headerOrInput('token');
        $language = $language ?: Base::headerOrInput('language');
        self::$doo->initialize("/var/www", $token, $language);
    }

    /**
     * 获取实例
     * @param $token
     * @param $language
     * @return mixed
     */
    public static function doo($token = null, $language = null)
    {
        if (self::$doo == null) {
            self::load($token, $language);
        }
        return self::$doo;
    }

    /**
     * License
     * @return array
     */
    public static function license(): array
    {
        $array = Base::json2array(self::string(self::doo()->license()));

        $ips = explode(",", $array['ip']);
        $array['ip'] = [];
        foreach ($ips as $ip) {
            if (Base::is_ipv4($ip)) {
                $array['ip'][] = $ip;
            }
        }

        $domains = explode(",", $array['domain']);
        $array['domain'] = [];
        foreach ($domains as $domain) {
            if (Base::is_domain($domain)) {
                $array['domain'][] = $domain;
            }
        }

        $macs = explode(",", $array['mac']);
        $array['mac'] = [];
        foreach ($macs as $mac) {
            if (Base::isMac($mac)) {
                $array['mac'][] = $mac;
            }
        }

        $emails = explode(",", $array['email']);
        $array['email'] = [];
        foreach ($emails as $email) {
            if (Base::isEmail($email)) {
                $array['email'][] = $email;
            }
        }

        return $array;
    }

    /**
     * 获取License原文
     * @return string
     */
    public static function licenseContent(): string
    {
        if (env("SYSTEM_LICENSE") == 'hidden') {
            return '';
        }
        $paths = [
            config_path("LICENSE"),
            config_path("license"),
            app_path("LICENSE"),
            app_path("license"),
        ];
        $content = "";
        foreach ($paths as $path) {
            if (file_exists($path)) {
                $content = file_get_contents($path);
                break;
            }
        }
        return $content;
    }

    /**
     * 解析License
     * @param $license
     * @return array
     */
    public static function licenseDecode($license): array
    {
        return Base::json2array(self::string(self::doo()->licenseDecode($license)));
    }

    /**
     * 保存License
     * @param $license
     */
    public static function licenseSave($license): void
    {
        $res = self::string(self::doo()->licenseSave($license));
        if ($res != 'success') {
            throw new ApiException($res ?: 'LICENSE 保存失败');
        }
    }

    /**
     * 当前会员ID（来自请求的token）
     * @return int
     */
    public static function userId(): int
    {
        return intval(self::doo()->userId());
    }

    /**
     * token是否过期（来自请求的token）
     * @return bool
     */
    public static function userExpired(): bool
    {
        $expiredAt = self::userExpiredAt();
        return $expiredAt && Carbon::parse($expiredAt)->isBefore(Carbon::now());
    }

    /**
     * token过期时间（来自请求的token）
     * @return string
     */
    public static function userExpiredAt(): string
    {
        $expiredAt = self::string(self::doo()->userExpiredAt());
        return $expiredAt === 'forever' ? '' : $expiredAt;
    }

    /**
     * 当前会员邮箱地址（来自请求的token）
     * @return string
     */
    public static function userEmail(): string
    {
        return self::string(self::doo()->userEmail());
    }

    /**
     * 当前会员Encrypt（来自请求的token）
     * @return string
     */
    public static function userEncrypt(): string
    {
        return self::string(self::doo()->userEncrypt());
    }

    /**
     * 当前会员token（来自请求的token）
     * @return string
     */
    public static function userToken(): string
    {
        return self::string(self::doo()->userToken());
    }

    /**
     * 创建帐号
     * @param $email
     * @param $password
     * @return User|null
     */
    public static function userCreate($email, $password): User|null
    {
        $data = Base::json2array(self::string(self::doo()->userCreate($email, $password)));
        if (Base::isError($data)) {
            throw new ApiException($data['msg'] ?: '注册失败');
        }
        $user = User::whereEmail($email)->first();
        if (empty($user)) {
            throw new ApiException('注册失败');
        }
        return $user;
    }

    /**
     * 生成token（编码token）
     * @param $userid
     * @param $email
     * @param $encrypt
     * @param int $days 有效时间（天）
     * @return string
     */
    public static function tokenEncode($userid, $email, $encrypt, int $days = 15): string
    {
        return self::string(self::doo()->tokenEncode($userid, $email, $encrypt, $days));
    }

    /**
     * 解码token
     * @param $token
     * @return array
     */
    public static function tokenDecode($token): array
    {
        return Base::json2array(self::string(self::doo()->tokenDecode($token)));
    }

    /**
     * 翻译
     * @param $text
     * @param string $type
     * @return string
     */
    public static function translate($text, string $type = ""): string
    {
        return self::string(self::doo()->translate($text, $type));
    }

    /**
     * md5防破解
     * @param $text
     * @param string $password
     * @return string
     */
    public static function md5s($text, string $password = ""): string
    {
        return self::string(self::doo()->md5s($text, $password));
    }

    /**
     * 获取php容器mac地址组
     * @return array
     */
    public static function macs(): array
    {
        $macs = explode(",", self::string(self::doo()->macs()));
        $array = [];
        foreach ($macs as $mac) {
            if (Base::isMac($mac)) {
                $array[] = $mac;
            }
        }
        return $array;
    }

    /**
     * 获取当前SN
     * @return string
     */
    public static function dooSN(): string
    {
        return self::string(self::doo()->dooSN());
    }
}