<?php

declare(strict_types=1);

namespace KupShop\RecaptchaBundle\Util;

use Google\Cloud\RecaptchaEnterprise\V1\Assessment;
use Google\Cloud\RecaptchaEnterprise\V1\Client\RecaptchaEnterpriseServiceClient;
use Google\Cloud\RecaptchaEnterprise\V1\CreateAssessmentRequest;
use Google\Cloud\RecaptchaEnterprise\V1\Event;
use Google\Cloud\RecaptchaEnterprise\V1\TokenProperties\InvalidReason;
use KupShop\KupShopBundle\Config;

class RecaptchaGCloudUtil
{
    public const SCORE = 0.5; // Threshold for score to consider the token valid
    private ?RecaptchaEnterpriseServiceClient $client = null;

    public function validate(string $token, ?string $type): bool
    {
        $cfg = Config::get();

        $siteKey = match ($type) {
            'invisible' => $cfg['Modules']['recaptcha']['gcloud_site_invisible'] ?? '',
            default => $cfg['Modules']['recaptcha']['gcloud_site'] ?? '',
        };

        return $this->create_assessment(
            siteKey: $siteKey,
            token: $token,
            project: $cfg['Modules']['recaptcha']['gcloud_project'] ?? '',
        );
    }

    private function getClient()
    {
        if ($this->client === null) {
            $cfg = Config::get();
            $this->client = new RecaptchaEnterpriseServiceClient([
                'apiKey' => $cfg['Modules']['recaptcha']['gcloud_api_key'] ?? '',
            ]);
        }

        return $this->client;
    }

    private function create_assessment(
        string $siteKey,
        string $token,
        string $project,
    ): bool {
        $projectName = $this->getClient()->projectName($project);

        $event = (new Event())
            ->setSiteKey($siteKey)
            ->setToken($token);

        $assessment = (new Assessment())
            ->setEvent($event);

        $request = (new CreateAssessmentRequest())
            ->setParent($projectName)
            ->setAssessment($assessment);

        try {
            $response = $this->getClient()->createAssessment($request);
            if (!$response->getTokenProperties()->getValid()) {
                printf('The CreateAssessment() call failed because the token was invalid for the following reason: ');
                printf(InvalidReason::name($response->getTokenProperties()->getInvalidReason()));

                return false;
            }

            if ($response->getRiskAnalysis()->getScore() >= self::SCORE) {
                return true;
            }
        } catch (\Exception $e) {
            printf('CreateAssessment() call failed with the following error: ');
            printf($e->getMessage());
        }

        return false;
    }
}