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1<?php
2
3// ╔════════════════════════════════════════════════════════════╗
4// ║ MIT Licence (#Expat) - https://opensource.org/licenses/MIT ║
5// ║ Copyright 2026 Frederic Poeydomenge <dyno@phexium.com>     ║
6// ╚════════════════════════════════════════════════════════════╝
7
8declare(strict_types=1);
9
10namespace AppDemo\User\Application\Command;
11
12use AppDemo\User\Domain\Email;
13use AppDemo\User\Domain\Event\UserAuthenticatedEvent;
14use AppDemo\User\Domain\User;
15use AppDemo\User\Domain\UserRepository;
16use InvalidArgumentException;
17use Phexium\Application\Command\CommandHandlerInterface;
18use Phexium\Plugin\Clock\Port\ClockInterface;
19use Phexium\Plugin\EventBus\Port\EventBusInterface;
20use Phexium\Plugin\IdGenerator\Port\IdGeneratorInterface;
21use Phexium\Plugin\Logger\Port\LoggerInterface;
22use Phexium\Plugin\PasswordHasher\Port\PasswordHasherInterface;
23
24final readonly class AuthenticateUserHandler implements CommandHandlerInterface
25{
26    public function __construct(
27        private UserRepository $userRepository,
28        private PasswordHasherInterface $passwordHasher,
29        private EventBusInterface $eventBus,
30        private ClockInterface $clock,
31        private IdGeneratorInterface $idGenerator,
32        private LoggerInterface $logger,
33    ) {}
34
35    public function __invoke(AuthenticateUserCommand $command): void
36    {
37        $this->logger->info('AuthenticateUserHandler: Starting authentication', [
38            'email' => $command->email,
39        ]);
40
41        try {
42            $email = Email::fromString($command->email);
43
44            $user = $this->userRepository->findByEmail($email);
45
46            if (!$user instanceof User) {
47                throw new InvalidArgumentException('Invalid credentials');
48            }
49
50            if (!$this->passwordHasher->verify($command->password, $user->getHashedPassword()->getValue())) {
51                throw new InvalidArgumentException('Invalid credentials');
52            }
53
54            $this->logger->info('AuthenticateUserHandler: User authenticated successfully', [
55                'userId' => $user->getId()->getValue(),
56                'email' => $user->getEmail()->getValue(),
57            ]);
58
59            // Dispatch event for successful authentication
60            $this->eventBus->dispatch(
61                new UserAuthenticatedEvent(
62                    $this->idGenerator->generate(),
63                    $this->clock->now(),
64                    $user
65                )
66            );
67        } catch (InvalidArgumentException $invalidArgumentException) {
68            $this->logger->warning('AuthenticateUserHandler: Authentication failed', [
69                'email' => $command->email,
70                'error' => $invalidArgumentException->getMessage(),
71            ]);
72            throw $invalidArgumentException;
73        }
74    }
75}