<?php

declare(strict_types=1);

final class FingerprintPostController extends AbstractController
{
	protected string $route = '/api/v1/fingerprint';
	protected array $mandatoryAttributes = [
		'fingerprint',
		'userId',
	];

	public function handle(): void
	{
		if (!$this->isUserLoggedIn()) {
			return;
		}

		parent::handle();

		$db = new MySqlDatabase();
		$json = json_decode($this->requestBody);
		$fingerprint = new Fingerprint(null, $db);
		$this->response = new ApiJsonResponse();

		try {
			if (!$this->hasUserPermission((int)$json->userId)) {
				return;
			}

			$fingerprint->setFingerprint((string)$json->fingerprint);
			$fingerprint->setUserId((int)$json->userId);

			if (!$db->hasTransaction()) {
				$db->startTransaction();
			}

			$fingerprint->Save();

			$qrCode = new QrCode($fingerprint->getFingerprintId(), $fingerprint->getFingerprint());
			$qrCode->generate();
			$qrCode->save();

			$db->commit();

			$this->response->setParameter('fingerprintId', $fingerprint->getFingerprintId());
		} catch (QrCodeException $e) {
			$this->response->setStatus(ServerStatus::INTERNAL_ERROR);
			$this->response->setParameter('success', false);
			$this->response->setMessage('An error occured during QR code creation!');
		} catch (Throwable $e) {
			$this->catchDatabaseException($e->getMessage(), $json);
		}
	}

	private function catchDatabaseException(string $message, object $json): void
	{
		$this->response->setParameter('success', false);

		if (substr_count($message, 'foreign key constraint fails') > 0) {
			$this->response->setMessage(sprintf('User with id %d doesn\'t exist!', $json->userId));
			$this->response->setStatus(ServerStatus::NOT_FOUND);
		} elseif (substr_count($message, 'Duplicate entry') > 0) {
			$this->response->setMessage(sprintf('Fingerprint %s already exists!', $json->fingerprint));
			$this->response->setStatus(ServerStatus::BAD_REQUEST);
		} else {
			$this->response->setMessage($message);
			$this->response->setStatus(ServerStatus::INTERNAL_ERROR);
		}
	}
}