<?php

namespace app\api\service;

use app\api\exception\ApiException;
use app\common\repository\UserReposotpry;
use app\common\exception\EnumCode;
use Firebase\JWT\JWT;
use think\Cache;

class UserService
{

    private $userReposotpry;

    public function __construct()
    {
        $this->userReposotpry = new UserReposotpry;
    }

    /**
     * 注册过程 function
     *
     * @author dotdotdot <6383846@qq.com>
     * @date 2022-08-06
     * @param array $params
     * @return array
     */
    public function register(array $params)
    {
        $phone = $params['phone'];

        $passWord = md5($params['phone'] . $params['password']);

        $userFields = ['uid'];

        $userData = $this->userReposotpry->selectByPhone($userFields, $phone);

        if (!empty($userData)) {
            throw new ApiException('账号已存在', EnumCode::UserIsExist);
        }

        $userInsertData = [
            'phone' => $phone,
            'password' => $passWord
        ];

        if (!$this->userReposotpry->insert($userInsertData)) {
            throw new ApiException('系统异常,请稍后再试!', EnumCode::ServiceError);
        }
    }

    /**
     * 登录过程 function
     *
     * @author dotdotdot <6383846@qq.com>
     * @date 2022-08-06
     * @param array $params
     * @return array
     */
    public function login(array $params)
    {
        $phone = $params['phone'];

        $passWord = md5($params['phone'] . $params['password']);

        $userFields = ['uid', 'password'];

        $userData = $this->userReposotpry->selectByPhone($userFields, $phone);

        if (empty($userData)) {
            throw new ApiException('用户不存在', EnumCode::UserNotExist);
        }

        if ($passWord != $userData['password']) {
            throw new ApiException('账号或密码错误', EnumCode::PassWordError);
        }

        $issuedAtTime = time();
        $expirationTime = $issuedAtTime + config('jwt.expiration_time');

        $payLoad = [
            'iat' => $issuedAtTime,
            'exp' => $expirationTime,
            'data' => [
                'uid' => $userData['uid']
            ]
        ];

        $jwt = JWT::encode($payLoad, config('jwt.key'), config('jwt.sign_type'));

        $preFix = config('jwt.pre_fix') . $userData['uid'];

        if (!Cache::set($preFix, $jwt, config('jwt.expiration_time'))) {
            throw new ApiException('系统异常,请稍后再试!', EnumCode::ServiceError);
        }

        return [
            'uid' => $userData['uid'],
            'iat' => $issuedAtTime,
            'exp' => $expirationTime,
            'token' => $jwt
        ];
    }
}