#-- encoding: UTF-8
#-- copyright
# ChiliProject is a project management system.
#
# Copyright (C) 2010-2012 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.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

class Group < Principal
  has_and_belongs_to_many :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

  # Returns an array of all of the email addresses of the group's users
  def mails
    users.collect(&:mail)
  end

  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) || Member.new(:project_id => member.project_id, :user_id => user.id)
      member.member_roles.each do |member_role|
        user_member.member_roles << MemberRole.new(:role => member_role.role, :inherited_from => member_role.id)
      end
      user_member.save!
    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(&:destroy)
    end
  end

  def self.human_attribute_name(attribute_name)
    attribute_name = "name" if attribute_name == "lastname"
    super(attribute_name)
  end
end