#-- encoding: UTF-8
#-- copyright
# OpenProject is a project management system.
#
# Copyright (C) 2012-2013 the OpenProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

class Group < Principal
  has_many :group_users
  has_many :users, :through => :group_users,
                   :after_add => :user_added,
                   :after_remove => :user_removed

  acts_as_customizable

  validates_presence_of :lastname
  validates_uniqueness_of :lastname, :case_sensitive => false
  validates_length_of :lastname, :maximum => 30

  def to_s
    lastname.to_s
  end

  def user_added(user)
    members.each do |member|
      next if member.project.nil?

      user_member = Member.find_by_project_id_and_user_id(member.project_id, user.id)

      if user_member.nil?
        user_member = Member.new.tap do |m|
          m.project_id = member.project_id
          m.user_id = user.id
        end

        member.member_roles.each do |member_role|
          user_member.add_role(member_role.role, member_role.id)
        end

        user_member.save!
      else
        member.member_roles.each do |member_role|
          user_member.add_and_save_role(member_role.role, member_role.id)
        end
      end
    end
  end

  def user_removed(user)
    members.each do |member|
      MemberRole.find(:all,
        :include => :member,
        :conditions =>
          ["#{Member.table_name}.user_id = ? AND #{MemberRole.table_name}.inherited_from IN (?)",
            user.id, member.member_role_ids]).each do |member_role|
              member_role.member.remove_member_role_and_destroy_member_if_last(member_role)
            end
    end
  end

  # adds group members
  # meaning users that are members of the group
  def add_member!(users)
    self.users << users
  end
end