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# Redmine - project management software

# Copyright (C) 2006-2012  Jean-Philippe Lang

#

# 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.

class Group < Principal

  include Redmine::SafeAttributes

  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

  before_destroy :remove_references_before_destroy

  scope :sorted, order("#{table_name}.lastname ASC")

  safe_attributes 'name',

    'user_ids',

    'custom_field_values',

    'custom_fields',

    :if => lambda {|group, user| user.admin?}

  def to_s

    lastname.to_s

  end

  def name

    lastname

  end

  def name=(arg)

    self.lastname = arg

  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_key_name, *args)

    attr_name = attribute_key_name.to_s

    if attr_name == 'lastname'

      attr_name = "name"

    end

    super(attr_name, *args)

  end

  private

  # Removes references that are not handled by associations

  def remove_references_before_destroy

    return if self.id.nil?

    Issue.update_all 'assigned_to_id = NULL', ['assigned_to_id = ?', id]

  end

end