<?php

namespace App\Service;

use App\DTO\AppSetupConfig;
use App\DTO\ExampleDataConfig;
use App\Entity\ConfigVariable;
use App\Entity\FareTable;
use App\Entity\RoomCategory;
use App\Entity\RoomFare;
use App\Entity\User;
use App\Enum\ConfigSectionType;
use App\Enum\UserRoleEnum;
use App\Repository\ConfigVariableRepository;
use App\Repository\FareTableRepository;
use App\Repository\RoomAvailabilityRepository;
use App\Repository\RoomCategoryRepository;
use App\Repository\RoomFareRepository;
use DateTime;
use Doctrine\ORM\EntityManagerInterface;
use Psr\Log\LoggerInterface;

/**
 * Service for setup proccess.
 */
class ExampleDataService
{

    public function __construct(
        private LoggerInterface $logger,
        private EntityManagerInterface $entityManager,
        private RoomCategoryRepository $roomCategoryRepository,
        private RoomAvailabilityRepository $roomAvailabilityRepository,
        private FareTableRepository $fareTableRepository,
        private RoomFareRepository $roomFareRepository,
    ) {}

    public function AddExampleData(ExampleDataConfig $config): string
    {
        $genMode = $config->getGenMode();
        if ($genMode == ExampleDataConfig::GENMODE_EXAMPLE) {
            return "'Example' generation mode is not supported yet!";
        }

        $this->entityManager->beginTransaction();

        try {
            if ($config->getGenRoomCategories()) {
                $this->GenerateRoomCategories();
            }
            if ($config->getGenAvailability()) {
                $this->GenerateAvailability($config);
            }
            if ($config->getGenFaretables()) {
                $this->GenerateFares($config);
            }

            $this->entityManager->flush();
            $this->entityManager->commit();
        } catch (\Throwable $th) {
            $this->entityManager->rollback();
            throw $th;
        }

        return "OK";
    }

    private function GenerateRoomCategories(): bool
    {
        //TODOME.
        return true;
    }

    private function GenerateAvailability(ExampleDataConfig $config): bool
    {
        $roomCategoryList = $this->roomCategoryRepository->findAll();
        foreach ($roomCategoryList as $room) {
            //TODOME: Make amounts configurable.
            $amount = random_int(0, 7);
            $this->roomAvailabilityRepository->bulkEditRoomAvailabilityForCategoryOnPeriod(
                $room,
                $config->getStartDate(),
                $config->getEndDate(),
                $amount,
                useTransactions: false
            );
        }

        return true;
    }

    private function GenerateFares(ExampleDataConfig $config): bool
    {
        $generationTime = new DateTime();
        $strGenTime = $generationTime->format('d-m-Y H:i:s');

        $roomCategoryList = $this->roomCategoryRepository->findAll();
        foreach ($roomCategoryList as $room) {
            $list = $this->fareTableRepository->findFareTable($room->getId(), $config->getStartDate(), $config->getEndDate());
            if (count($list) > 0) {
                //TODOME: Log info.
                continue;
            }

            $fareTable = new FareTable();
            $fareTable->setStartDate($config->getStartDate());
            $fareTable->setEndDate($config->getEndDate());
            $fareTable->setRoomCategory($room);
            $fareTable->setComment("Autogenerated " . $strGenTime);

            $this->entityManager->persist($fareTable);

            for ($i = 1; $i < $room->getMaxGuestNum(); $i++) {
                $roomFare = new RoomFare();
                $roomFare->setGuestNumber($i);
                $roomFare->setFareTable($fareTable);

                //TODOME: Make amounts configurable.
                // Random price per person.
                $amount = random_int(10, 25) * $i * 100;
                $roomFare->setFareAmount($amount);

                $this->entityManager->persist($roomFare);
            }
        }

        return true;
    }
}