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EDITING: jwt_message_serializer.rb

# frozen_string_literal: true

#
# Copyright (C) 2018 - present Instructure, Inc.
#
# This file is part of Canvas.
#
# Canvas is free software: you can redistribute it and/or modify it under
# the terms of the GNU Affero General Public License as published by the Free
# Software Foundation, version 3 of the License.
#
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
# details.
#
# You should have received a copy of the GNU Affero General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.

module LtiAdvantage::Serializers
  class JwtMessageSerializer
    IMS_CLAIM_PREFIX = "https://purl.imsglobal.org/spec/lti/claim/"
    DL_CLAIM_PREFIX = "https://purl.imsglobal.org/spec/lti-dl/claim/"
    NRPS_CLAIM_URL = "https://purl.imsglobal.org/spec/lti-nrps/claim/namesroleservice"
    AGS_CLAIM_URL = "https://purl.imsglobal.org/spec/lti-ags/claim/endpoint"

STANDARD_IMS_CLAIMS = %w[
      context
      custom
      deployment_id
      launch_presentation
      lis
      message_type
      resource_link
      role_scope_mentor
      roles
      tool_platform
      version
      target_link_uri
      lti11_legacy_user_id
      lti1p1
    ].freeze

DEEP_LINKING_CLAIMS = %w[
      deep_linking_settings
      content_items
    ].freeze

NAMES_AND_ROLES_SERVICE_CLAIM = "names_and_roles_service"
    ASSIGNMENT_AND_GRADE_SERVICE_CLAIM = "assignment_and_grade_service"

def initialize(object)
      @object = object
    end

def serializable_hash
      hash = apply_claim_prefixes(@object.as_json.compact)
      promote_extensions(hash)
    end

private

def promote_extensions(hash)
      extensions = hash.delete("extensions")
      extensions.present? ? hash.merge(extensions) : hash
    end

def apply_claim_prefixes(hash)
      hash.transform_keys do |key|
        if STANDARD_IMS_CLAIMS.include?(key)
          "#{IMS_CLAIM_PREFIX}#{key}"
        elsif DEEP_LINKING_CLAIMS.include?(key)
          "#{DL_CLAIM_PREFIX}#{key}"
        elsif key == NAMES_AND_ROLES_SERVICE_CLAIM
          NRPS_CLAIM_URL
        elsif key == ASSIGNMENT_AND_GRADE_SERVICE_CLAIM
          AGS_CLAIM_URL
        else
          key
        end
      end
    end
  end
end

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 jwt_message_serializer.rb	RB	2.3 KB	2023-09-24 03:36	EDIT