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

#
# Copyright (C) 2011 - 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 QuizzesNextHelper
    def quizzes_next_tool?(tool)
      tool.present? &&
        tool.tool_id == ContextExternalTool::QUIZ_LTI
    end

    module_function :quizzes_next_tool?

    def unavailable_for_students?(context, current_user, tool)
      return false unless quizzes_next_tool?(tool)
      return false unless current_user.roles(context.root_account).exclude?("admin")

      current_user_enrollment = context.enrollments.where(user: current_user)
      current_user_enrollment
        .where(type: %w[StudentEnrollment StudentViewEnrollment ObserverEnrollment])
        .active_by_date.union(current_user_enrollment.of_admin_type).none?
    end

    module_function :unavailable_for_students?

    def userless_launch?(current_user, tool)
      quizzes_next_tool?(tool) &&
        current_user.blank?
    end

    module_function :userless_launch?
  end
end