# frozen_string_literal: true

#
# Copyright (C) 2024 - 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/>.
#

class Mutations::UpdateDiscussionTopicParticipant < Mutations::BaseMutation
  graphql_name "UpdateDiscussionTopicParticipant"

  argument :discussion_topic_id, ID, required: true, prepare: GraphQLHelpers.relay_or_legacy_id_prepare_func("DiscussionEntry")
  argument :expanded, Boolean, required: false
  argument :has_unread_pinned_entry, Boolean, required: false
  argument :show_pinned_entries, Boolean, required: false
  argument :preferred_language, Types::PreferredLanguageType, required: false
  argument :sort_order, Types::DiscussionSortOrderType, required: false
  argument :summary_enabled, Boolean, required: false
  field :discussion_topic, Types::DiscussionType, null: false

  def resolve(input:)
    discussion_topic = DiscussionTopic.find(input[:discussion_topic_id])
    raise GraphQL::ExecutionError, "insufficient permission" unless discussion_topic.grants_right?(current_user, session, :read)

    discussion_topic.update_or_create_participant(current_user:, **input)
    { discussion_topic: }
  rescue ActiveRecord::RecordNotFound
    raise GraphQL::ExecutionError, "not found"
  end
end
