<?php

declare(strict_types=1);

namespace App\Tests\Controller\Admin\AccommodationBooking;

use App\Controller\Admin\AccommodationBooking\PdfController;
use App\Entity\Groups\AccommodationBooking;
use App\Enum\Groups\AccommodationBookingStatus;
use App\Service\AccommodationBookingPdfGenerator;
use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Response;

/**
 * Covers the guards around the PDF download — the rendering itself is tested in
 * AccommodationBookingPdfGeneratorTest.
 */
class PdfControllerTest extends TestCase
{
    public function testAConfirmedBookingIsDownloadedAsPdf(): void
    {
        $booking = $this->booking(AccommodationBookingStatus::Confirmed);

        $generator = $this->createMock(AccommodationBookingPdfGenerator::class);
        $generator->expects(self::once())
            ->method('createDownloadResponse')
            ->with($booking)
            ->willReturn(new Response('%PDF-1.7'));

        $response = (new TestablePdfController($generator))->index($booking);

        self::assertSame(Response::HTTP_OK, $response->getStatusCode());
    }

    /**
     * @dataProvider nonConfirmedStatuses
     */
    public function testABookingThatIsNotConfirmedCannotBeDownloaded(AccommodationBookingStatus $status): void
    {
        $generator = $this->createMock(AccommodationBookingPdfGenerator::class);
        $generator->expects(self::never())->method('createDownloadResponse');

        $controller = new TestablePdfController($generator);

        $response = $controller->index($this->booking($status));

        self::assertSame(Response::HTTP_FOUND, $response->getStatusCode());
        self::assertSame(['warning'], array_column($controller->flashes, 'type'));
    }

    /**
     * @return iterable<string, array{AccommodationBookingStatus}>
     */
    public static function nonConfirmedStatuses(): iterable
    {
        yield 'draft' => [AccommodationBookingStatus::Draft];
        yield 'open' => [AccommodationBookingStatus::Open];
        yield 'received' => [AccommodationBookingStatus::Received];
        yield 'discarded' => [AccommodationBookingStatus::Discarded];
    }

    public function testAFailingGeneratorRedirectsWithAFlash(): void
    {
        $generator = $this->createMock(AccommodationBookingPdfGenerator::class);
        $generator->method('createDownloadResponse')->willThrowException(new \RuntimeException('keine Preise'));

        $controller = new TestablePdfController($generator);

        $response = $controller->index($this->booking(AccommodationBookingStatus::Confirmed));

        self::assertSame(Response::HTTP_FOUND, $response->getStatusCode());
        self::assertStringContainsString('keine Preise', (string) $controller->flashes[0]['message']);
    }

    private function booking(AccommodationBookingStatus $status): AccommodationBooking
    {
        $booking = new AccommodationBooking();
        $booking->setStatus($status);
        $booking->setGroupName('Schulklasse 7b');

        return $booking;
    }
}

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

    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);
    }
}