<?php

namespace Packback\Lti1p3\MessageValidators;


< use Packback\Lti1p3\Interfaces\IMessageValidator;


use Packback\Lti1p3\LtiConstants;
use Packback\Lti1p3\LtiException;


< class DeepLinkMessageValidator implements IMessageValidator



> class DeepLinkMessageValidator extends AbstractMessageValidator


{

<     public function canValidate(array $jwtBody)



>     public static function getMessageType(): string


    {

<         return $jwtBody[LtiConstants::MESSAGE_TYPE] === 'LtiDeepLinkingRequest';



>         return LtiConstants::MESSAGE_TYPE_DEEPLINK;


    }


<     public function validate(array $jwtBody)



>     public static function validate(array $jwtBody): void


    {

<         if (empty($jwtBody['sub'])) {
<             throw new LtiException('Must have a user (sub)');
<         }
<         if ($jwtBody[LtiConstants::VERSION] !== LtiConstants::V1_3) {
<             throw new LtiException('Incorrect version, expected 1.3.0');
<         }
<         if (!isset($jwtBody[LtiConstants::ROLES])) {
<             throw new LtiException('Missing Roles Claim');
<         }



>         static::validateGenericMessage($jwtBody);
> 


        if (empty($jwtBody[LtiConstants::DL_DEEP_LINK_SETTINGS])) {
            throw new LtiException('Missing Deep Linking Settings');
        }
        $deep_link_settings = $jwtBody[LtiConstants::DL_DEEP_LINK_SETTINGS];
        if (empty($deep_link_settings['deep_link_return_url'])) {
            throw new LtiException('Missing Deep Linking Return URL');
        }
        if (empty($deep_link_settings['accept_types']) || !in_array('ltiResourceLink', $deep_link_settings['accept_types'])) {
            throw new LtiException('Must support resource link placement types');
        }
        if (empty($deep_link_settings['accept_presentation_document_targets'])) {
            throw new LtiException('Must support a presentation type');
        }

< 
<         return true;


    }
}