#-- copyright
# OpenProject is a project management system.
# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
#
# 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) 2006-2017 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 doc/COPYRIGHT.rdoc for more details.
#++

module Members
  class BaseContract < ::ModelContract
    delegate :principal,
             :project,
             :new_record?,
             to: :model

    attribute :roles

    def validate
      user_allowed_to_manage
      roles_grantable
      principal_assignable

      super
    end

    def user_allowed_to_manage
      if model.project && !user.allowed_to?(:manage_members, model.project)
        errors.add :base, :error_unauthorized
      end
    end

    def roles_grantable
      unless roles.all? { |r| r.builtin == Role::NON_BUILTIN && r.class == Role }
        errors.add(:roles, :ungrantable)
      end
    end

    def principal_assignable
      if principal &&
         [Principal::STATUSES[:builtin], Principal::STATUSES[:locked]].include?(principal.status)
        errors.add(:principal, :unassignable)
      end
    end
  end
end