App\Services\TokenAuth

Complexity

Total Complexity

20

Size/Duplication

Total Lines	168
Duplicated Lines	0 %

Coupling/Cohesion

Components	2
Dependencies	9

Importance

Changes

0

11 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	attemptFromEmailAndPassword()	0	8	2
A	resolveFromIdAndPassword()	0	8	2
A	fromGuard()	0	4	2
A	fromUser()	0	12	1
A	encode()	0	4	1
A	guest()	0	4	1
A	fromToken()	0	19	4
A	verifyTokenCreated()	0	8	2
A	decode()	0	4	1
A	resolveExistingUser()	0	20	3

<?php
/**
 * This file is part of laravel.su package.
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */
declare(strict_types=1);

namespace App\Services;

use App\Models\User;
use Carbon\Carbon;
use Illuminate\Support\Arr;
use Illuminate\Contracts\Auth\Guard;
use Tymon\JWTAuth\Exceptions\JWTException;
use Tymon\JWTAuth\Providers\JWT\JWTInterface;
use Illuminate\Contracts\Auth\Authenticatable;
use Tymon\JWTAuth\Exceptions\TokenExpiredException;
use Symfony\Component\HttpKernel\Exception\BadRequestHttpException;
use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException;

/**
 * Class TokenAuth
 * @package App\Services
 */
class TokenAuth
{
    /**
     * @var JWTInterface
     */
    private $jwt;

    /**
     * @var Guard
     */
    private $guard;

    /**
     * TokenAuth constructor.
     * @param JWTInterface $jwt
     * @param Guard $guard
     */
    public function __construct(JWTInterface $jwt, Guard $guard)
    {
        $this->jwt = $jwt;
        $this->guard = $guard;
    }

    /**
     * @param string $email
     * @param string $password
     * @return Authenticatable
     */
    public function attemptFromEmailAndPassword(string $email, string $password): ?Authenticatable
    {
        if (! $this->guard->validate(['email' => $email, 'password' => $password])) {
            return null;
        }

        return User::whereEmail($email)->first();
    }

    /**
     * @param int $id
     * @param string $password
     * @return Authenticatable
     */
    public function resolveFromIdAndPassword(int $id, string $password): ?Authenticatable
    {
        if (! $this->guard->validate(['id' => $id, 'password' => $password])) {
            return null;
        }

        return User::find($id);
    }

    /**
     * @param Guard $guard
     * @return string
     */
    public function fromGuard(Guard $guard): string
    {
        return $this->fromUser($guard->check() ? $guard->user() : $this->guest());
    }

    /**
     * @param Authenticatable $user
     * @return string
     */
    public function fromUser(Authenticatable $user): string
    {
        return $this->encode([
            'user'    => [
                'id'       => $user->getAuthIdentifier(),
                'password' => $user->getAuthPassword(),
            ],
            'created' => Carbon::now()->toRfc3339String(),
            'guest'   => 0 === (int)$user->getAuthIdentifier(),
            'token'   => $user->getRememberToken(),
        ]);
    }

    /**
     * @param array $payload
     * @return string
     */
    public function encode(array $payload): string
    {
        return $this->jwt->encode($payload);
    }

    /**
     * @return Authenticatable
     */
    public function guest(): Authenticatable
    {
        return new User(['id' => 0, 'name' => 'Guest']);
    }

    /**
     * @param string $token
     * @return Authenticatable
     * @throws BadRequestHttpException
     * @throws UnprocessableEntityHttpException
     */
    public function fromToken(string $token): Authenticatable
    {
        try {
            $userInfo = $this->decode($token);
            $this->verifyTokenCreated($userInfo);

        } catch (TokenExpiredException $e) {
            throw new BadRequestHttpException('Token lifetime is timed out.');

        } catch (JWTException $invalidException) {
            throw new BadRequestHttpException('Broken api token.');
        }

        if (false !== Arr::get($userInfo, 'guest', true)) {
            return $this->resolveExistingUser($userInfo);
        }

        return $this->guest();
    }

    /**
     * @param array $userInfo
     * @throws TokenExpiredException
     */
    private function verifyTokenCreated(array $userInfo): void
    {
        $created = Carbon::parse($userInfo['created'] ?? '0001-00-00 00:00');

        if (Carbon::now()->subMinutes(config('jwt.ttl')) > $created) {
            throw new TokenExpiredException();
        }
    }

    /**
     * @param string $token
     * @return array
     */
    public function decode(string $token): array
    {
        return $this->jwt->decode($token);
    }

    /**
     * @param array $userInfo
     * @return mixed
     * @throws UnprocessableEntityHttpException
     */
    private function resolveExistingUser(array $userInfo)
    {
        [$id, $password, $token] = [

The variable $id does not exist. Did you forget to declare it?

The variable $password does not exist. Did you forget to declare it?

The variable $token does not exist. Did you forget to declare it?

            (int)Arr::get($userInfo, 'user.id'),
            (string)Arr::get($userInfo, 'user.password'),
            (string)Arr::get($userInfo, 'token'),
        ];

        $user = User::where('id', $id)->where('password', $password)->first();

        if ($user->remember_token !== $token) {
            throw new UnprocessableEntityHttpException('Invalid remember token');
        }

        if (! $user) {
            throw new UnprocessableEntityHttpException('Invalid user credentials.');
        }

        return $user;
    }
}