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: / var / canvas / lib / lti / membership_service /
Filename : course_lis_person_collator.rb
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# frozen_string_literal: true

#
# Copyright (C) 2016 - 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 Lti
  module MembershipService
    class CourseLisPersonCollator < LisPersonCollatorBase
      private

      def scope
        options = {
          enrollment_type: %w[teacher ta designer observer student],
          include_inactive_enrollments: false
        }

        @user_scope ||= @user.nil? ? context.current_users : UserSearch.scope_for(context, @user, options)
      end

      def generate_roles(user)
        enrollments = if user.association(:not_ended_enrollments).loaded?
                        user.not_ended_enrollments.select { |enr| enr.course_id == context.id }
                      else
                        user.not_ended_enrollments.where(course: context)
                      end
        enrollments.filter_map do |enrollment|
          case enrollment.type
          when "TeacherEnrollment"
            ::IMS::LIS::Roles::Context::URNs::Instructor
          when "TaEnrollment"
            ::IMS::LIS::Roles::Context::URNs::TeachingAssistant
          when "DesignerEnrollment"
            ::IMS::LIS::Roles::Context::URNs::ContentDeveloper
          when "StudentEnrollment"
            ::IMS::LIS::Roles::Context::URNs::Learner
          when "ObserverEnrollment"
            ::IMS::LIS::Roles::Context::URNs::Learner_NonCreditLearner
          end
        end.uniq
      end
    end
  end
end