<?php

declare(strict_types=1);

namespace App\Tests\Controller\Admin\AccommodationBooking;

use App\Controller\Admin\AccommodationBooking\SplitPeriodController;
use App\Entity\Groups\AccommodationBooking;
use App\Enum\Groups\AccommodationBookingPeriodPosition;
use App\Exception\ImplausibleBookingPriceException;
use App\Service\AccommodationBookingService;
use PHPUnit\Framework\TestCase;
use Psr\Log\LoggerInterface;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Validator\ConstraintViolation;
use Symfony\Component\Validator\ConstraintViolationList;

/**
 * Covers how the modal answers — the split itself is tested in AccommodationBookingServiceTest
 * and AccommodationBookingTest.
 */
class SplitPeriodControllerTest extends TestCase
{
    public function testGetRendersTheModal(): void
    {
        $bookingService = $this->createMock(AccommodationBookingService::class);
        $bookingService->expects(self::never())->method('splitOffPeriod');

        $controller = $this->buildController($bookingService, $this->form(submitted: false));

        $response = $controller->index(new AccommodationBooking(), AccommodationBookingPeriodPosition::Leading, $this->request());

        self::assertSame(Response::HTTP_OK, $response->getStatusCode());
        self::assertSame('admin/accommodation_booking/modal_period.html.twig', $controller->renderedView);
    }

    public function testASideThatWasAlreadySplitIsNotSplitAgain(): void
    {
        // The edit page only offers free sides; this is a page left open while the side was taken.
        $booking = (new AccommodationBooking())
            ->setDateFrom(new \DateTimeImmutable('2026-07-01'))
            ->setDateTo(new \DateTimeImmutable('2026-07-08'));
        $booking->splitOffPeriod(AccommodationBookingPeriodPosition::Leading, 1);

        $bookingService = $this->createMock(AccommodationBookingService::class);
        $bookingService->expects(self::never())->method('splitOffPeriod');

        $controller = $this->buildController($bookingService, $this->form(submitted: true));

        $response = $controller->index($booking, AccommodationBookingPeriodPosition::Leading, $this->request('POST'));

        self::assertTrue($response->headers->has('HX-Redirect'));
        self::assertNull($controller->renderedView);
        self::assertSame('error', $controller->flashes[0]['type']);
    }

    public function testAValidSplitSendsTheBrowserBackToTheEditForm(): void
    {
        $booking = new AccommodationBooking();

        $bookingService = $this->createMock(AccommodationBookingService::class);
        $bookingService->expects(self::once())->method('splitOffPeriod')
            ->with($booking, AccommodationBookingPeriodPosition::Trailing)
            ->willReturn(new ConstraintViolationList());

        $controller = $this->buildController($bookingService, $this->form(submitted: true));

        $response = $controller->index($booking, AccommodationBookingPeriodPosition::Trailing, $this->request('POST'));

        self::assertSame(
            '/app_admin_accommodationbooking_edit?r=%2Fadmin%2Faccommodation-booking%3Fpage%3D2',
            $response->headers->get('HX-Redirect'),
        );
        self::assertSame('success', $controller->flashes[0]['type']);
    }

    public function testAViolationOfTheBookingIsReportedInTheModal(): void
    {
        $violations = new ConstraintViolationList([
            new ConstraintViolation('Nach dem Abteilen der Zeiträume muss mindestens eine Nacht für die Gruppe bleiben.', null, [], null, 'dateTo', null),
        ]);
        $bookingService = $this->createStub(AccommodationBookingService::class);
        $bookingService->method('splitOffPeriod')->willReturn($violations);

        $controller = $this->buildController($bookingService, $this->form(submitted: true, expectsError: true));

        $response = $controller->index(new AccommodationBooking(), AccommodationBookingPeriodPosition::Leading, $this->request('POST'));

        self::assertFalse($response->headers->has('HX-Redirect'), 'the modal stays open on the error');
        self::assertSame('admin/accommodation_booking/modal_period.html.twig', $controller->renderedView);
        self::assertSame([], $controller->flashes);
    }

    public function testAnImplausibleTotalIsReportedInTheModal(): void
    {
        $bookingService = $this->createStub(AccommodationBookingService::class);
        $bookingService->method('splitOffPeriod')
            ->willThrowException(new ImplausibleBookingPriceException(AccommodationBooking::MAX_TOTAL_PRICE + 1, 40, 2));

        $controller = $this->buildController($bookingService, $this->form(submitted: true, expectsError: true));

        $response = $controller->index(new AccommodationBooking(), AccommodationBookingPeriodPosition::Leading, $this->request('POST'));

        self::assertFalse($response->headers->has('HX-Redirect'));
        self::assertSame('admin/accommodation_booking/modal_period.html.twig', $controller->renderedView);
    }

    private function request(string $method = 'GET'): Request
    {
        return Request::create(
            '/admin/accommodation-booking/1/period/split/leading?r=%2Fadmin%2Faccommodation-booking%3Fpage%3D2',
            $method,
            server: ['HTTP_HX-Request' => 'true'],
        );
    }

    private function form(bool $submitted, bool $expectsError = false): FormInterface
    {
        $form = $expectsError ? $this->createMock(FormInterface::class) : $this->createStub(FormInterface::class);
        if ($form instanceof \PHPUnit\Framework\MockObject\MockObject) {
            $form->expects(self::once())->method('addError');
        }
        $form->method('handleRequest')->willReturn($form);
        $form->method('isSubmitted')->willReturn($submitted);
        $form->method('isValid')->willReturn(true);

        return $form;
    }

    private function buildController(AccommodationBookingService $bookingService, FormInterface $form): TestableSplitPeriodController
    {
        return new TestableSplitPeriodController($bookingService, $this->createStub(LoggerInterface::class), $form);
    }
}

final class TestableSplitPeriodController extends SplitPeriodController
{
    public ?string $renderedView = null;

    /** @var list<array{type: string, message: mixed}> */
    public array $flashes = [];

    public function __construct(
        AccommodationBookingService $bookingService,
        LoggerInterface $logger,
        private readonly FormInterface $form,
    ) {
        parent::__construct($bookingService, $logger);
    }

    protected function createForm(string $type, mixed $data = null, array $options = []): FormInterface
    {
        return $this->form;
    }

    /**
     * @param array<string, mixed> $parameters
     */
    protected function render(string $view, array $parameters = [], ?Response $response = null): Response
    {
        $this->renderedView = $view;

        return new Response();
    }

    protected function addFlash(string $type, mixed $message): void
    {
        $this->flashes[] = ['type' => $type, 'message' => $message];
    }

    /**
     * @param array<string, mixed> $parameters
     */
    protected function generateUrl(string $route, array $parameters = [], int $referenceType = 1): string
    {
        return '/'.$route.'?'.http_build_query($parameters);
    }
}