<?php

namespace App\BusProNet;

use App\BusProNet\DataProcessor\BookingDataProcessor;
use App\BusProNet\Exception\ApiClientException;
use App\BusProNet\Exception\ResponseParserException;
use App\BusProNet\Model\BaseData;
use App\BusProNet\Model\Booking;
use App\BusProNet\Model\BookingUpdate;
use App\BusProNet\Model\CrmAttributes;
use App\BusProNet\Model\Notification;
use App\BusProNet\Model\PersonalData;
use App\BusProNet\Traits\ApiClientTrait;
use App\BusProNet\XmlParser\ApiResponseParser;
use App\Form\Model\BookingData;
use App\Form\Model\RegistrationData;
use League\Flysystem\FilesystemException;
use League\Flysystem\FilesystemOperator;
use Psr\Log\LoggerInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Serializer\Encoder\XmlEncoder;
use Symfony\Component\Serializer\SerializerInterface;

class ApiClient
{
    use ApiClientTrait;

    public const TYPE_NOTIFICATION = 'HINWEIS';
    public const TYPE_CUSTOMER_DATA = 'KUNDENKONTO';
    public const TYPE_BASE_DATA_COUNTRIES = 'STAMMLAENDER';
    public const TYPE_MUTABLE_DATA = 'MOEGLICHEAENDERUNGEN';
    public const TYPE_AVAILABILITY = 'VERFUEGBARKEIT';
    public const TYPE_BOOKING_UPDATE = 'BUCHUNGAENDERUNG';

    private array $config;

    public function __construct(
        private readonly SerializerInterface $serializer,
        private readonly ApiResponseParser $responseParser,
        private readonly FilesystemOperator $xmlDump,
        private readonly LoggerInterface $logger,
        array $options,
    ) {
        $this->config = $this->resolveOptions($options);
    }

    /**
     * @throws ApiClientException
     */
    public function getPersonalData(string $email, string $password): Notification|PersonalData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Adressdaten',
            'email' => $email,
            'passwort' => $password,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function register(RegistrationData $registrationData): Notification
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Adresse_Neu',
            'adressdaten' => [
                'geschlecht' => $registrationData->gender,
                'vorname' => $registrationData->firstName,
                'name' => $registrationData->name,
                'kommunikation' => [
                    'email' => $registrationData->email,
                ],
            ],
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function resetPassword(string $email): Notification
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Passwort_Anfrage',
            'email' => $email,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function updatePersonalData(
        string $email,
        string $password,
        PersonalData $personalData,
        bool $debug = false,
    ): Notification|PersonalData {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Adressdaten_Ändern',
            'email' => $email,
            'passwort' => $password,
            'idadresse' => $personalData->addressId,
            'adressdaten' => $personalData->toPayload(),
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data, $debug);
    }

    /**
     * @throws ApiClientException
     */
    public function updateNewsletterRegistration(string $email, string $password, PersonalData $personalData): Notification|PersonalData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Newsletter',
            'email' => $email,
            'passwort' => $password,
            'idadresse' => $personalData->addressId,
            'newsletter' => [
                'email' => $email,
                'anmeldung' => $personalData->communication->newsletter ? 'True' : 'False',
            ],
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getBookings(string $email, string $password): Notification|BaseData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Vorgänge',
            'email' => $email,
            'passwort' => $password,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getBooking(string $email, string $password, int $id): Notification|Booking
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'Vorgang_Details',
            'email' => $email,
            'passwort' => $password,
            'idbuchung' => $id,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function updateBooking(BookingData $formData, bool $debug = false): Notification|BookingUpdate
    {
        $payload = (new BookingDataProcessor())->createUpdateRequestPayload($formData);

        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_BOOKING_UPDATE),
            'satz' => ['@typ' => static::TYPE_BOOKING_UPDATE],
            'buchungsart' => 'Buchung',
            ...$payload,
        ];

        return $this->sendRequest(static::TYPE_BOOKING_UPDATE, $data, $debug);
    }

    /**
     * @throws ApiClientException
     */
    public function getMutableData(int $id): Notification|BaseData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_MUTABLE_DATA),
            'satz' => ['@typ' => static::TYPE_MUTABLE_DATA],
            'art' => 'Vorgang_Details',
            'idreise' => $id,
        ];

        return $this->sendRequest(static::TYPE_MUTABLE_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getAvailabilities(int $id): Notification|BaseData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_AVAILABILITY),
            'satz' => ['@typ' => static::TYPE_AVAILABILITY],
            'idreise' => $id,
        ];

        return $this->sendRequest(static::TYPE_AVAILABILITY, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getCrmAttributes(string $email, string $password): Notification|CrmAttributes
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => 'SelektionCRM',
            'email' => $email,
            'passwort' => $password,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getBaseData(string $type): Notification|BaseData
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], $type),
            'satz' => ['@typ' => $type],
        ];

        return $this->sendRequest($type, $data);
    }

    /**
     * @throws ApiClientException
     */
    public function getDocuments(string $email, string $password, int $id, string $type): mixed
    {
        $data = [
            'user' => $this->config['bpn_username'],
            'key' => $this->createKey($this->config['bpn_username'], $this->config['bpn_password'], static::TYPE_CUSTOMER_DATA),
            'satz' => ['@typ' => static::TYPE_CUSTOMER_DATA],
            'art' => $type,
            'email' => $email,
            'passwort' => $password,
            'idbuchung' => $id,
        ];

        return $this->sendRequest(static::TYPE_CUSTOMER_DATA, $data);
    }

    /**
     * @throws ApiClientException
     */
    private function sendRequest(string $type, array $data, bool $debug = false): mixed
    {
        $requestId = date(DATE_ATOM).uniqid();

        $body = $this
            ->serializer
            ->serialize($data, 'xml', [
                XmlEncoder::ROOT_NODE_NAME => 'anfrage',
                XmlEncoder::ENCODING => 'UTF-8',
            ])
        ;

        $this->logger->info('Sending request to BPN API', [
            'requestId' => $requestId,
        ]);

        if (true === $debug || true === $this->config['debug']) {
            $this->dumpXmlToFile('request', $requestId, $body);
        }

        $socket = $this->connect(
            $this->config['bpn_api_ip'],
            $this->config['bpn_api_port'],
            $this->config['max_retries']
        );
        $this->send($socket, $body);
        $response = $this->receive($socket);
        $this->disconnect($socket);

        // message length (10 bytes) is prepended to actual message
        $xml = substr($response, 10);

        if (true === $debug || true === $this->config['debug']) {
            $this->dumpXmlToFile('response', $requestId, $xml);
        }

        try {
            return $this->responseParser->parseXmlString($type, $xml);
        } catch (ResponseParserException $e) {
            $this->dumpXmlToFile('response', $requestId, $xml);
        }

        $this->logger->error('Unexpected response received from API', [
            'request_id' => $requestId,
        ]);

        throw new ApiClientException('Unexpected response received from API');
    }

    private function dumpXmlToFile(string $type, string $requestId, string $body): void
    {
        try {
            $this->xmlDump->write($requestId.'_'.$type.'.xml', $body);
        } catch (FilesystemException $e) {
        }
    }

    private function createKey(string $username, string $password, string $type): string
    {
        $date = (new \DateTimeImmutable())->format('Ymd');

        return md5($username.$password.$date.$type);
    }

    private function resolveOptions(array $options): array
    {
        $optionsResolver = new OptionsResolver();
        $optionsResolver->setRequired([
            'bpn_username',
            'bpn_password',
            'bpn_api_ip',
            'bpn_api_port',
        ]);
        $optionsResolver->setDefaults([
            'max_retries' => 25,
            'debug' => false,
        ]);

        return $optionsResolver->resolve($options);
    }
}