<?php
namespace app\common\model;
use Firebase\JWT\JWT;
use Firebase\JWT\Key;

class Jwttoken
{
    //生成token
    public function createJwt($username)
    {
        $key    = md5('key'); //jwt的签发密钥，验证token的时候需要用到
        $time   = time();
        $expire = $time + 14400; //过期时间
        $token  = array(
            "username" => $username,
            "iss"      => "",//签发组织
            "aud"      => "", //签发作者
            "iat"      => $time, //签发时间
            "nbf"      => $time, //生效时间
            "exp"      => $expire
        );
        $jwt    = JWT::encode($token, $key, 'HS256');
        return $jwt;
    }


    //校验jwt权限API
    public function verifyJwt($jwt)
    {
        $key = 'A6H1O#vJ*6QV3*sC';
        try {
            $jwtAuth  = JWT::decode($jwt, new Key($key, 'HS256'));
            $authInfo = (array)$jwtAuth;
            $msg['status']=0;
            $msg['info']=$authInfo;
            return $msg;
        } catch (\Firebase\JWT\SignatureInvalidException $e) {
            return [
                'status' => 10002,
                'msg'    => 'Token无效'
            ];
            exit;
        } catch (\UnexpectedValueException $e) {
            return [
                'status' => 10005,
                'msg'    => $e->getMessage()
            ];
            exit;
        }  catch (\DomainException $e) {
            return [
                'status' => 10006,
                'msg'    => $e->getMessage()
            ];
            exit;
        } catch (\InvalidArgumentException $e) {
            return [
                'status' => 10007,
                'msg'    => $e->getMessage()
            ];
            exit;
        } catch (\Firebase\JWT\ExpiredException $e) {
            //Token过期
            return [
                'status' => 10003,
                'msg'    => '登录信息已超时，请重新登录'
            ];
            exit;
        } catch (Exception $e) {
            return [
                'status' => 10004,
                'msg'    => '未知错误'
            ];
            exit;
        }
    }
}