<?php

namespace App\Controller;

use App\ApiErrorException;
use App\Consts\ConfigVariableConsts;
use App\DTO\ApiErrorMessage;
use App\Repository\RoomAvailabilityRepository;
use App\Repository\RoomCategoryRepository;
use App\Request\SearchPeriodRequest;
use App\Response\SearchAvailabilityResponse;
use App\Request\SearchPricesForCategoryRequest;
use App\Response\SearchPricesResponse;
use App\Response\SearchPricesResponsePriceItem;
use App\Service\ConfigVariableService;
use App\Service\PricesService;
use DateTimeInterface;
use Nelmio\ApiDocBundle\Annotation\Model;
use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\Routing\Attribute\Route;
use OpenApi\Attributes as OA;
use Psr\Log\LoggerInterface;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpKernel\Attribute\MapRequestPayload;

class SearchRoomsController extends AbstractController
{
    private string $configMaxAllowedNightAmount;

    public function __construct(
        private ConfigVariableService $configVarService,
        private LoggerInterface $logger
    ) {
        $this->configMaxAllowedNightAmount = $configVarService->getVariableFromConst(ConfigVariableConsts::CONFIG_API_NAXNIGHTS)->getValue();
    }

    /**
     * Get availability for all rooms on period.
     * For each room, the minimal availability will be returned.
     */
    #[Route('/api/search/availability', name: 'app_search_availability', methods: ["POST"], format: "json")]
    #[OA\Tag(name: "Searchs")]
    #[OA\Response(
        response: 200,
        description: 'Each room available',
        content: new OA\JsonContent(
            type: 'object',
            properties: [
                new OA\Property(
                    property: "results",
                    type: "array",
                    items: new OA\Items(ref: new Model(type: SearchAvailabilityResponse::class))
                )
            ]
        )
    )]
    #[OA\RequestBody(
        content: new OA\JsonContent(
            type: 'object',
            ref: new Model(type: SearchPeriodRequest::class),
        )
    )]
    public function getAvailabilityForPeriod(
        RoomAvailabilityRepository $repoAvailability,
        #[MapRequestPayload()] SearchPeriodRequest $searchRequest
    ): JsonResponse {

        $datesValid = $this->areRequestDatesValid($searchRequest->startDate, $searchRequest->endDate);
        if ($datesValid != null) {
            throw $datesValid;
        }

        $rs = $repoAvailability->getAvailabilityForPeriod($searchRequest->startDate, $searchRequest->endDate);

        return $this->json(["results" => $rs]);
    }

    /**
     * Get the price of each room on each day of a period.
     * 
     */
    #[Route('/api/search/prices', name: 'app_search_prices', methods: ["POST"], format: "json")]
    #[OA\Tag(name: "Searchs")]
    #[OA\RequestBody(
        content: new OA\JsonContent(
            type: 'object',
            ref: new Model(type: SearchPeriodRequest::class),
        )
    )]
    #[OA\Response(
        response: 200,
        description: 'Total Prices for the period of each room',
        content: new OA\JsonContent(
            type: 'object',
            properties: [
                new OA\Property(
                    property: "results",
                    type: "array",
                    items: new OA\Items(ref: new Model(type: SearchPricesResponse::class))
                )
            ]
        )
    )]
    public function getPricesForPeriod(
        PricesService $priceService,
        #[MapRequestPayload()] SearchPeriodRequest $searchRequest
    ): JsonResponse {

        $datesValid = $this->areRequestDatesValid($searchRequest->startDate, $searchRequest->endDate);
        if ($datesValid != null) {
            throw $datesValid;
        }

        $rs = $priceService->getRoomSearch($searchRequest->startDate, $searchRequest->endDate);

        return $this->json(["results" => $rs]);
    }

    /**
     * Get room category price for given period.
     * Returns price for a room category. 
     * This price is the total for all the selected days by guest number.
     */
    #[Route('/api/search/pricesCategory', name: 'app_search_pricesForCategory', methods: ["POST"], format: "json")]
    #[OA\Tag(name: "Searchs")]
    #[OA\Response(
        response: 200,
        description: 'Room price by guest number',
        content: new OA\JsonContent(
            type: 'object',
            properties: [
                new OA\Property(
                    property: "results",
                    type: "array",
                    items: new OA\Items(ref: new Model(type: SearchPricesResponsePriceItem::class))
                )
            ]
        )
    )]
    #[OA\RequestBody(
        content: new OA\JsonContent(
            type: 'object',
            ref: new Model(type: SearchPricesForCategoryRequest::class),
        )
    )]
    public function getPricesForCategoryOnPeriod(
        RoomCategoryRepository $repoCat,
        PricesService $priceService,
        #[MapRequestPayload()] SearchPricesForCategoryRequest $searchRequest
    ): JsonResponse {

        $datesValid = $this->areRequestDatesValid($searchRequest->startDate, $searchRequest->endDate);
        if ($datesValid != null) {
            throw $datesValid;
        }

        $roomCategory = $repoCat->find($searchRequest->roomCategory);
        if ($roomCategory === null) {
            throw new ApiErrorException(
                new ApiErrorMessage(422, ApiErrorMessage::TYPE_VALIDATION_ERROR),
                'Invalid RoomCategory: ' . $searchRequest->roomCategory,
            );
        }

        $rs = $priceService->getFinalPricesForSearch($roomCategory, $searchRequest->startDate, $searchRequest->endDate);

        return $this->json(["results" => $rs]);
    }


    private function areRequestDatesValid(DateTimeInterface $dateStart, DateTimeInterface $dateEnd): ApiErrorException|null
    {
        if ($dateStart >= $dateEnd) {
            return new ApiErrorException(
                new ApiErrorMessage(422, ApiErrorMessage::TYPE_INVALID_DATE),
                'startDate cant be before endDate',
            );
        }

        $daysDiff = $dateStart->diff($dateEnd)->days;
        if ($daysDiff > $this->configMaxAllowedNightAmount) {
            return new ApiErrorException(
                new ApiErrorMessage(400, ApiErrorMessage::TYPE_API_LIMIT),
                'Query exceeded max allowed night amount',
            );
        }

        return null;
    }
}