<?php
require_once 'src/JWT.php';
header('Content-type:application/json');
//定義Key
const KEY = 'dasjdkashdwqe1213dsfsn;p';

$user = [
    'uid'=>'dadsa-12312-vsd1s1-fsds',
    'account'=>'daisc',
    'password'=>'123456'
];
$redis = redis();
$action  =  $_GET['action'];
switch ($action)
{
    case 'login':
        login();
        break;
    case 'info':
        info();
        break;

}
//登陸，寫入驗(yàn)證token
function login()
{
    global  $user;
    $account = $_GET['account'];
    $pwd = $_GET['password'];
    $res = [];
    if($account==$user['account']&&$pwd==$user['password'])
    {
        unset($user['password']);
        $time = time();
        $token = [
            'iss'=>'http://test.cc',//簽發(fā)者
            'iat'=>$time,
            'exp'=>$time+60,
            'data'=>$user
        ];
        $jwt = \Firebase\JWT\JWT::encode($token,KEY);
        $res['code'] = 200;
        $res['message'] = '登錄成功';
        $res['jwt'] = $jwt;

    }
    else
    {
        $res['message']= '用戶名或密碼錯(cuò)誤';
        $res['code'] = 401;
    }
    exit(json_encode($res));
}





function info()
{
   $jwt = $_SERVER['HTTP_AUTHORIZATION'] ?? false;
   $res['code'] = 200;
   if($jwt)
   {
        $jwt = str_replace('Bearer ','',$jwt);
        if(empty($jwt))
        {
            $res['code'] = 401;
            $res['msg'] = 'You do not have permission to access.';
            exit(json_encode($res));
        }
        try{
            $token = (array) \Firebase\JWT\JWT::decode($jwt,KEY, ['HS256']);
            if($token['exp']<time())
            {
                $res['code'] = 401;
                $res['msg'] = '登錄超時(shí)，請(qǐng)重新登錄';
            }
            $res['data']= $token['data'];
        }catch (\Exception $E)
        {
            $res['code'] = 401;
            $res['msg'] = '登錄超時(shí)，請(qǐng)重新登錄.';
        }
   }
   else
   {
       $res['code'] = 401;
       $res['msg'] = 'You do not have permission to access.';
   }
    exit(json_encode($res));
}



//連接redis
function redis()
{
    $redis = new  Redis();
    $redis->connect('127.0.0.1');
    return $redis;
}

    */
    public static function encode($payload, $key, $alg = 'HS256', $keyId = null, $head = null)
    {
        $header = array('typ' => 'JWT', 'alg' => $alg);
        if ($keyId !== null) {
            $header['kid'] = $keyId;
        }
        if ( isset($head) && is_array($head) ) {
            $header = array_merge($head, $header);
        }
        $segments = array();
        $segments[] = static::urlsafeB64Encode(static::jsonEncode($header));
        $segments[] = static::urlsafeB64Encode(static::jsonEncode($payload));
        $signing_input = implode('.', $segments);

        $signature = static::sign($signing_input, $key, $alg);
        $segments[] = static::urlsafeB64Encode($signature);

        return implode('.', $segments);
    }

 $token   = [
            #非必須。issuer 請(qǐng)求實(shí)體，可以是發(fā)起請(qǐng)求的用戶的信息，也可是jwt的簽發(fā)者。
            "iss"       => "http://example.org",
            #非必須。issued at。 token創(chuàng)建時(shí)間，unix時(shí)間戳格式
            "iat"       => $_SERVER['REQUEST_TIME'],
            #非必須。expire 指定token的生命周期。unix時(shí)間戳格式
            "exp"       => $_SERVER['REQUEST_TIME'] + 7200,
            #非必須。接收該JWT的一方。
            "aud"       => "http://example.com",
            #非必須。該JWT所面向的用戶
            "sub"       => "jrocket@example.com",
            # 非必須。not before。如果當(dāng)前時(shí)間在nbf里的時(shí)間之前，則Token不被接受；一般都會(huì)留一些余地，比如幾分鐘。
            "nbf"       => 1357000000,
            # 非必須。JWT ID。針對(duì)當(dāng)前token的唯一標(biāo)識(shí)
            "jti"       => '222we',
            # 自定義字段
            "GivenName" => "Jonny",
            # 自定義字段
            "name"   => "Rocket",
            # 自定義字段
            "Email"     => "jrocket@example.com",
         
        ];