<?php

declare(strict_types=1);

namespace App\Tests\Service;

use App\BusProNet\Constants;
use App\BusProNet\Model\Room;
use App\BusProNet\Model\Travel;
use App\Exception\NoRoomsAvailableException;
use App\Service\BookingPriceCalculatorService;
use App\Service\BookingService;
use App\Service\ParticipantEligibilityService;
use App\Service\TravelDataService;
use PHPUnit\Framework\TestCase;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Session\Session;
use Symfony\Component\HttpFoundation\Session\Storage\MockArraySessionStorage;

class BookingServiceStatusTest extends TestCase
{
    private BookingService $bookingService;
    private TravelDataService $travelDataService;

    protected function setUp(): void
    {
        $this->travelDataService = $this->createMock(TravelDataService::class);
        $priceCalculator = $this->createMock(BookingPriceCalculatorService::class);
        $participantEligibility = $this->createMock(ParticipantEligibilityService::class);

        $this->bookingService = new BookingService(
            $this->travelDataService,
            $priceCalculator,
            $participantEligibility
        );
    }

    public function testStartFreshBookingWithFreiRooms(): void
    {
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_AVAILABLE, 'available' => 5],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $bookingDto = $this->bookingService->startFreshBooking($request, 123, 456);

        $this->assertSame('F', $bookingDto->bookingStatus);
        $this->assertCount(1, $bookingDto->roomSelections);
    }

    public function testStartFreshBookingWithFreiRoomsAndNoAvailabilityThrowsException(): void
    {
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_AVAILABLE, 'available' => 0],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $this->expectException(NoRoomsAvailableException::class);

        $this->bookingService->startFreshBooking($request, 123, 456);
    }

    public function testStartFreshBookingWithAnfrageRooms(): void
    {
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_ON_REQUEST, 'available' => 5],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $bookingDto = $this->bookingService->startFreshBooking($request, 123, 456);

        $this->assertSame('A', $bookingDto->bookingStatus);
        $this->assertCount(1, $bookingDto->roomSelections);
    }

    public function testStartFreshBookingWithAnfrageRoomsAndNoAvailabilityThrowsException(): void
    {
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_ON_REQUEST, 'available' => 0],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $this->expectException(NoRoomsAvailableException::class);

        $this->bookingService->startFreshBooking($request, 123, 456);
    }

    public function testStartFreshBookingWithMixedRoomsUsesFreeStatus(): void
    {
        // When both Frei and Anfrage rooms with availability exist, booking status should be 'F'
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_AVAILABLE, 'available' => 5],
            ['status' => Constants::STATUS_ON_REQUEST, 'available' => 3],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $bookingDto = $this->bookingService->startFreshBooking($request, 123, 456);

        $this->assertSame('F', $bookingDto->bookingStatus);
        $this->assertCount(2, $bookingDto->roomSelections);
    }

    public function testStartFreshBookingWithNoBookableRoomsThrowsException(): void
    {
        // Rooms exist but all have 0 availability
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_AVAILABLE, 'available' => 0],
            ['status' => Constants::STATUS_ON_REQUEST, 'available' => 0],
        ]);

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $this->expectException(NoRoomsAvailableException::class);

        $this->bookingService->startFreshBooking($request, 123, 456);
    }

    public function testStartFreshBookingWithApiRestrictionsForcesInquiry(): void
    {
        // Even with Frei rooms, if API says only 'A' allowed, booking status should be 'A'
        $travel = $this->createTravelWithRooms([
            ['status' => Constants::STATUS_AVAILABLE, 'available' => 5],
        ]);
        $travel->allowedBookingStatus = ['A']; // API restricts to inquiry only

        $this->travelDataService
            ->method('getTravelData')
            ->willReturn($travel);

        $request = $this->createRequestWithSession();

        $bookingDto = $this->bookingService->startFreshBooking($request, 123, 456);

        $this->assertSame('A', $bookingDto->bookingStatus);
    }

    /**
     * @param array<array{status: string, available: int}> $roomsConfig
     */
    private function createTravelWithRooms(array $roomsConfig): Travel
    {
        $travel = new Travel();
        $travel->id = 123;
        $travel->hotelId = 456;
        $travel->dateFrom = new \DateTimeImmutable('2030-01-01');
        $travel->dateTo = new \DateTimeImmutable('2030-01-06');
        $travel->allowedBookingStatus = []; // Empty means no API restrictions

        $rooms = [];
        foreach ($roomsConfig as $index => $config) {
            $room = new Room();
            $room->id = $index + 1;
            $room->label = 'Test Room '.($index + 1);
            $room->price = 100.0;
            $room->available = $config['available'];
            $room->status = $config['status'];
            $room->minPax = 2;
            $room->category = 'A';
            $room->boardId = 1;

            $rooms[$room->id] = $room;
        }

        $travel->rooms = $rooms;

        return $travel;
    }

    private function createRequestWithSession(): Request
    {
        $session = new Session(new MockArraySessionStorage());
        $request = new Request();
        $request->setSession($session);

        return $request;
    }
}