<?php

namespace App\Lib;

use Google\Cloud\RecaptchaEnterprise\V1\RecaptchaEnterpriseServiceClient;
use Google\Cloud\RecaptchaEnterprise\V1\Event;
use Google\Cloud\RecaptchaEnterprise\V1\Assessment;
use Google\Cloud\RecaptchaEnterprise\V1\TokenProperties\InvalidReason;

class GoogleRecaptchaValidator {
    /**
     * Create an assessment to analyze the risk of a UI action.
     * @param string $siteKey The key ID for the reCAPTCHA key (See https://cloud.google.com/recaptcha-enterprise/docs/create-key)
     * @param string $token The user's response token for which you want to receive a reCAPTCHA score. (See https://cloud.google.com/recaptcha-enterprise/docs/create-assessment#retrieve_token)
     * @param string $project Your Google Cloud project ID
     */
    static function create_assessment(
        string $siteKey,
        string $token,
        string $project
    ): void {
        // TODO: To avoid memory issues, move this client generation outside
        // of this example, and cache it (recommended) or call client.close()
        // before exiting this method.
        $client = new RecaptchaEnterpriseServiceClient();
        $projectName = $client->projectName($project);

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

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

        try {
            $response = $client->createAssessment(
                $projectName,
                $assessment
            );

            // You can use the score only if the assessment is valid,
            // In case of failures like re-submitting the same token, getValid() will return false
            if ($response->getTokenProperties()->getValid() == false) {
                printf('The CreateAssessment() call failed because the token was invalid for the following reason: ');
                printf(InvalidReason::name($response->getTokenProperties()->getInvalidReason()));
            } else {
                printf('The score for the protection action is:');
                printf($response->getRiskAnalysis()->getScore());

                // Optional: You can use the following methods to get more data about the token
                // Action name provided at token generation.
                // printf($response->getTokenProperties()->getAction() . PHP_EOL);
                // The timestamp corresponding to the generation of the token.
                // printf($response->getTokenProperties()->getCreateTime()->getSeconds() . PHP_EOL);
                // The hostname of the page on which the token was generated.
                // printf($response->getTokenProperties()->getHostname() . PHP_EOL);
            }
        } catch (exception $e) {
            printf('CreateAssessment() call failed with the following error: ');
            printf($e);
        }
    }
}


?>