<?php

namespace Tests\Unit\Auth\Middleware;

use App\Auth\CreateSessionDto;
use App\Http\Middleware\AuthMiddleware;
use App\Shared\ValueObject\EmailAddress;
use App\User\User;
use Closure;
use DateTimeImmutable;
use DateTimeZone;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use PHPUnit\Framework\TestCase;
use Tests\Fakes\FakeClock;
use Tests\Fakes\FakeSessionRepository;

class AuthMiddlewareTest extends TestCase
{
    private FakeSessionRepository $sessionRepository;

    private DateTimeImmutable $now;

    private AuthMiddleware $middleware;

    protected function setUp(): void
    {
        $this->now = new DateTimeImmutable(
            '2026-07-31T12:00:00',
            new DateTimeZone('UTC'),
        );
        $this->sessionRepository = new FakeSessionRepository;
        $this->middleware = new AuthMiddleware(
            sessionRepository: $this->sessionRepository,
            clock: new FakeClock($this->now),
        );
    }

    public function test_missing_cookie_returns_unauthenticated(): void
    {
        $capturedRequest = null;

        $response = $this->middleware->handle(
            $this->requestWithToken(null),
            $this->captureNextRequest($capturedRequest),
        );

        $this->assertSame(401, $response->getStatusCode());
        $this->assertSame(
            ['error' => 'unauthenticated'],
            json_decode($response->getContent(), true),
        );
        $this->assertNull($capturedRequest);
    }

    public function test_empty_cookie_returns_unauthenticated(): void
    {
        $capturedRequest = null;

        $response = $this->middleware->handle(
            $this->requestWithToken(''),
            $this->captureNextRequest($capturedRequest),
        );

        $this->assertSame(401, $response->getStatusCode());
        $this->assertNull($capturedRequest);
    }

    public function test_unknown_token_returns_unauthenticated(): void
    {
        $capturedRequest = null;

        $response = $this->middleware->handle(
            $this->requestWithToken('unknown-token'),
            $this->captureNextRequest($capturedRequest),
        );

        $this->assertSame(401, $response->getStatusCode());
        $this->assertNull($capturedRequest);
    }

    public function test_expired_session_is_deleted(): void
    {
        $this->sessionRepository->create(new CreateSessionDto(
            token: 'expired-token',
            user: $this->user(),
            createdAt: $this->now->modify('-8 days'),
            expiresAt: $this->now->modify('-1 day'),
        ));
        $capturedRequest = null;

        $response = $this->middleware->handle(
            $this->requestWithToken('expired-token'),
            $this->captureNextRequest($capturedRequest),
        );

        $this->assertSame(401, $response->getStatusCode());
        $this->assertNull($capturedRequest);
        $this->assertNull(
            $this->sessionRepository->findByToken('expired-token'),
        );
    }

    public function test_valid_session_attaches_user_and_calls_next(): void
    {
        $user = $this->user();
        $this->sessionRepository->create(new CreateSessionDto(
            token: 'valid-token',
            user: $user,
            createdAt: $this->now,
            expiresAt: $this->now->modify('+7 days'),
        ));
        $capturedRequest = null;

        $response = $this->middleware->handle(
            $this->requestWithToken('valid-token'),
            $this->captureNextRequest($capturedRequest),
        );

        $this->assertSame(200, $response->getStatusCode());
        $this->assertNotNull($capturedRequest);
        $this->assertSame(
            $user,
            $capturedRequest->attributes->get('user'),
        );
    }

    private function requestWithToken(?string $token): Request
    {
        $request = Request::create('/anything', 'GET');
        if ($token !== null) {
            $request->cookies->set(AuthMiddleware::COOKIE_NAME, $token);
        }

        return $request;
    }

    /**
     * @param  Request|null  $capturedRequest
     * @return Closure(Request): JsonResponse
     */
    private function captureNextRequest(
        ?Request &$capturedRequest,
    ): Closure {
        return function (Request $request) use (&$capturedRequest) {
            $capturedRequest = $request;

            return new JsonResponse(['ok' => true]);
        };
    }

    private function user(): User
    {
        return new User(
            id: 7,
            email: new EmailAddress('user@example.com'),
            passwordHash: 'hashed-password',
        );
    }
}