#-- encoding: UTF-8

#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2013 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
#
# See docs/COPYRIGHT.rdoc for more details.
#++

module Members
  class SetAttributesService < ::BaseServices::SetAttributes
    private

    def set_attributes(params)
      assign_roles(params)

      super
    end

    def assign_roles(params)
      return unless params[:role_ids]

      role_ids = params
        .delete(:role_ids)
        .select(&:present?)
        .map(&:to_i)

      existing_ids = model.member_roles.map(&:role_id)

      mark_roles_for_destruction(existing_ids - role_ids)
      build_roles(role_ids - existing_ids)
    end

    def mark_roles_for_destruction(role_ids)
      role_ids.each do |role_id|
        model
          .member_roles
          .detect { |mr| mr.inherited_from.nil? && mr.role_id == role_id }
          &.mark_for_destruction
      end
    end

    def build_roles(role_ids)
      role_ids.each do |role_id|
        model.member_roles.build(role_id: role_id)
      end
    end
  end
end