<?php

declare(strict_types=1);

namespace App\Tests\Form\Service;

use App\BusProNet\Constants;
use App\BusProNet\Model\Booking;
use App\BusProNet\Model\Service;
use App\BusProNet\Model\Travel;
use App\Form\Model\BookingDto;
use App\Form\Model\ParticipantDto;
use App\Form\Service\ParticipantFieldOptionsProvider;
use App\Service\BookingPriceCalculator;
use App\Service\InsuranceManager;
use App\Service\ServiceAvailabilityCalculator;
use App\Service\ServiceLabelFormatter;
use PHPUnit\Framework\TestCase;
use Symfony\Contracts\Translation\TranslatorInterface;

/**
 * Edit mode applies the availability rules instead of bypassing them.
 *
 * Edit used to skip availability entirely for every category except ski passes, so a course
 * that had sold out or moved to 'Anfrage' was still offered. Selecting one made BusPro refuse
 * the whole update ("Status der Leistung (A) ist unterschiedlich zum Status des Teilnehmers
 * (F)"), because the participants of an existing booking are fixed at status 'F'.
 *
 * Courses stand in for the categories that render read-only rather than dropping the option.
 */
class ParticipantFieldOptionsProviderEditAvailabilityTest extends TestCase
{
    private ParticipantFieldOptionsProvider $provider;

    protected function setUp(): void
    {
        $translator = $this->createStub(TranslatorInterface::class);
        $translator->method('trans')->willReturnArgument(0);

        $this->provider = new ParticipantFieldOptionsProvider(
            new ServiceAvailabilityCalculator(),
            $this->createStub(InsuranceManager::class),
            $this->createStub(BookingPriceCalculator::class),
            new ServiceLabelFormatter(),
            $translator
        );
    }

    public function testOnRequestCourseIsReadonlyInEditMode(): void
    {
        $course = $this->createCourse(id: 1, status: Constants::STATUS_ON_REQUEST);
        $bookingDto = $this->createEditBookingDto([$course]);

        $attributes = $this->getChoiceAttributes($bookingDto, $course);

        $this->assertArrayHasKey('readonly', $attributes);
        $this->assertSame(
            'Diese Leistung ist derzeit nur auf Anfrage buchbar. Bitte kontaktiere uns.',
            $attributes['data-tooltip']
        );
    }

    public function testSoldOutCourseIsReadonlyInEditMode(): void
    {
        $course = $this->createCourse(id: 1, available: 0);
        $bookingDto = $this->createEditBookingDto([$course]);

        $attributes = $this->getChoiceAttributes($bookingDto, $course);

        $this->assertArrayHasKey('readonly', $attributes);
        $this->assertSame('ausgebucht', $attributes['data-tooltip']);
    }

    public function testOnRequestCourseStaysSelectableWhenAlreadyBooked(): void
    {
        $course = $this->createCourse(id: 1, status: Constants::STATUS_ON_REQUEST);
        $bookingDto = $this->createEditBookingDto([$course], heldServiceIds: [1]);

        $attributes = $this->getChoiceAttributes($bookingDto, $course);

        $this->assertArrayNotHasKey('readonly', $attributes);
        $this->assertArrayNotHasKey('data-tooltip', $attributes);
    }

    public function testUnlimitedCourseIsNotReadonlyInEditMode(): void
    {
        // A null contingent means unlimited. The previous edit branch inverted this and made
        // such a service read-only for anyone who did not already hold it.
        $course = $this->createCourse(id: 1, available: null);
        $bookingDto = $this->createEditBookingDto([$course]);

        $attributes = $this->getChoiceAttributes($bookingDto, $course);

        $this->assertArrayNotHasKey('readonly', $attributes);
    }

    public function testOnRequestCourseStaysSelectableInCreateMode(): void
    {
        $course = $this->createCourse(id: 1, status: Constants::STATUS_ON_REQUEST);
        $bookingDto = $this->createBookingDto([$course]);

        $this->assertSame(BookingDto::MODE_CREATE, $bookingDto->getMode());

        $attributes = $this->getChoiceAttributes($bookingDto, $course);

        $this->assertArrayNotHasKey('readonly', $attributes);
    }

    /** @return array<string, mixed> */
    private function getChoiceAttributes(BookingDto $bookingDto, Service $service): array
    {
        $options = $this->provider->getFieldOptions('courses', $bookingDto, 0);

        return $options['choice_attr']($service);
    }

    /** @param Service[] $courses */
    private function createBookingDto(array $courses): BookingDto
    {
        $travel = new Travel();
        $travel->dateFrom = new \DateTimeImmutable('2027-01-09');
        $travel->dateTo = new \DateTimeImmutable('2027-01-16');

        foreach ($courses as $course) {
            $travel->additionalServices[$course->id] = $course;
        }

        $bookingDto = new BookingDto($travel, 1);

        $participant = new ParticipantDto();
        $participant->index = 0;
        $participant->dateOfBirth = new \DateTimeImmutable('1990-01-01');
        $bookingDto->participants[0] = $participant;

        return $bookingDto;
    }

    /**
     * @param Service[] $courses
     * @param list<int> $heldServiceIds IDs participant 0 already holds in the booking
     */
    private function createEditBookingDto(array $courses, array $heldServiceIds = []): BookingDto
    {
        $bookingDto = $this->createBookingDto($courses);

        $heldServices = [];
        foreach ($heldServiceIds as $serviceId) {
            $held = clone $bookingDto->travel->additionalServices[$serviceId];
            $held->mapping = [0];
            $heldServices[$serviceId] = $held;
        }

        // A non-null booking is what puts the DTO into edit mode
        $booking = new Booking();
        $booking->additionalServices = $heldServices;
        $bookingDto->booking = $booking;

        return $bookingDto;
    }

    private function createCourse(int $id, ?int $available = 10, string $status = Constants::STATUS_AVAILABLE): Service
    {
        $service = new Service();
        $service->id = $id;
        $service->label = sprintf('Kurs %d', $id);
        $service->subType = Constants::TOKEN_COURSES;
        $service->category = Constants::CATEGORY_ADDITIONAL;
        $service->price = (float) $id;
        $service->available = $available;
        $service->status = $status;

        return $service;
    }
}