<?php

declare(strict_types=1);

namespace App\Tests\Form\Service;

use App\BusProNet\Model\Insurance;
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;

/**
 * Regression tests for the family-insurance choices-list bug: the applicant selects a
 * family insurance, it's correctly reassigned to the total-price tier on submit, but
 * the re-rendered form showed no selection because the choices list was still filtered
 * by the applicant's individual price instead of the total booking price.
 */
class ParticipantFieldOptionsProviderInsuranceTest extends TestCase
{
    private ParticipantFieldOptionsProvider $provider;
    private BookingPriceCalculator $priceCalculatorService;

    protected function setUp(): void
    {
        $serviceAvailabilityCalculator = $this->createStub(ServiceAvailabilityCalculator::class);
        // InsuranceManager is stateless - use the real implementation so actual
        // eligibility/price-tier filtering runs, not a stubbed-out mock.
        $insuranceService = new InsuranceManager();
        $this->priceCalculatorService = $this->createStub(BookingPriceCalculator::class);
        $serviceLabelFormatter = new ServiceLabelFormatter();
        $translator = $this->createStub(TranslatorInterface::class);
        $translator->method('trans')->willReturnCallback(fn (string $message) => $message);

        $this->provider = new ParticipantFieldOptionsProvider(
            $serviceAvailabilityCalculator,
            $insuranceService,
            $this->priceCalculatorService,
            $serviceLabelFormatter,
            $translator
        );
    }

    public function testFamilyInsuranceCorrectTierAppearsInApplicantChoicesUsingTotalPrice(): void
    {
        $travel = new Travel();
        $travel->dateFrom = new \DateTimeImmutable('2025-08-01');
        $travel->dateTo = new \DateTimeImmutable('2025-08-08');

        // Low tier only matches the applicant's individual price (300), not the total (450)
        $lowTierFamilyInsurance = new Insurance();
        $lowTierFamilyInsurance->id = '1';
        $lowTierFamilyInsurance->label = 'Reise-Rücktritt Familie';
        $lowTierFamilyInsurance->familyInsurance = true;
        $lowTierFamilyInsurance->travelPriceFrom = 0.0;
        $lowTierFamilyInsurance->travelPriceTo = 400.0;

        // Correct tier matches the total booking price (450), not the applicant's individual price (300)
        $correctTierFamilyInsurance = new Insurance();
        $correctTierFamilyInsurance->id = '2';
        $correctTierFamilyInsurance->label = 'Reise-Rücktritt Familie';
        $correctTierFamilyInsurance->familyInsurance = true;
        $correctTierFamilyInsurance->travelPriceFrom = 400.01;
        $correctTierFamilyInsurance->travelPriceTo = 600.0;

        $travel->insurances = [$lowTierFamilyInsurance, $correctTierFamilyInsurance];

        $applicant = new ParticipantDto();
        $applicant->index = 0;
        $applicant->dateOfBirth = new \DateTimeImmutable('1990-06-15');

        $child = new ParticipantDto();
        $child->index = 1;
        $child->dateOfBirth = new \DateTimeImmutable('2015-01-01');

        $bookingDto = new BookingDto($travel, 1);
        $bookingDto->participants = [$applicant, $child];

        $this->priceCalculatorService
            ->method('calculateIndividualParticipantPriceExcludingInsurance')
            ->willReturn(300.0);
        $this->priceCalculatorService
            ->method('calculateTotalBookingPriceExcludingInsurance')
            ->willReturn(450.0);

        $options = $this->provider->getFieldOptions('insurance', $bookingDto, 0);

        $choiceIds = array_map(fn (Insurance $insurance) => $insurance->id, $options['choices']);

        $this->assertContains('2', $choiceIds, 'Family insurance tier matching the total booking price must be selectable');
        $this->assertNotContains('1', $choiceIds, 'Family insurance tier that only matches the individual price must not be selectable');
    }

    public function testFamilyInsuranceNeverAppearsInDependentChoices(): void
    {
        $travel = new Travel();
        $travel->dateFrom = new \DateTimeImmutable('2025-08-01');
        $travel->dateTo = new \DateTimeImmutable('2025-08-08');

        $familyInsurance = new Insurance();
        $familyInsurance->id = '1';
        $familyInsurance->label = 'Reise-Rücktritt Familie';
        $familyInsurance->familyInsurance = true;

        $travel->insurances = [$familyInsurance];

        $applicant = new ParticipantDto();
        $applicant->index = 0;
        $applicant->dateOfBirth = new \DateTimeImmutable('1990-06-15');

        $child = new ParticipantDto();
        $child->index = 1;
        $child->dateOfBirth = new \DateTimeImmutable('2015-01-01');

        $bookingDto = new BookingDto($travel, 1);
        $bookingDto->participants = [$applicant, $child];

        $this->priceCalculatorService
            ->method('calculateIndividualParticipantPriceExcludingInsurance')
            ->willReturn(0.0);
        $this->priceCalculatorService
            ->method('calculateTotalBookingPriceExcludingInsurance')
            ->willReturn(450.0);

        $options = $this->provider->getFieldOptions('insurance', $bookingDto, 1);

        $choiceIds = array_map(fn (Insurance $insurance) => $insurance->id, $options['choices']);

        $this->assertNotContains('1', $choiceIds, 'Family insurance must never be selectable for a non-applicant participant');
    }
}