#--
# Copyright (c) 2012+ Damjan Rems
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++

#########################################################################
#
#########################################################################
class DcPolicy
  include Mongoid::Document
  include Mongoid::Timestamps

  field :name,        type: String
  field :description, type: String,  default: ''
  field :is_default,  type: Boolean, default: false
  field :active,      type: Boolean, default: true
  field :updated_by,  type: BSON::ObjectId
  field :message,     type: String,  default: ''
  
  #embeds_many :dc_policy_rules
  embeds_many :dc_policy_rules, as: :policy_rules  
  embedded_in :dc_site

  validates :name, :length => { :minimum => 4 }  
  validates :message, :length => { :minimum => 5 }  
  
#  index name: 1
#  index 'dc_policy_rules._id' => 1
  
#########################################################################
#
#########################################################################
def self.values_for_permissions
  [['NO_ACCESS',0],['CAN_VIEW',1],['CAN_CREATE',2],['CAN_EDIT',4],['CAN_EDIT_ALL',8],['CAN_DELETE',16],['CAN_DELETE_ALL',32],['CAN_ADMIN',64],['SUPERADMIN',128]]
end

#########################################################################
# returns all possible policy rules for use in select input field
#########################################################################
def self.choices4_policies()
  rez = []
  all.each do |policy|
    rez << [policy.name, nil]
    policy.dc_policy_rules.each do |rule|
      rez << ['-- ' + rule.name, rule._id]
    end
  end
  rez
end

#########################################################################
# Returns policy rules for the site. Since it is called from policy_role form
# which can be embedded in lots of tables (collections) table name of parent 
# is also send as parameter.
#########################################################################
def self.choices4_site_policy(table, id)
  unless table == 'dc_site'
    t  = table.classify.constantize
    id = t.find(id).dc_site_id
  end
  rez = []
  site = DcSite.find_by(id: id)
  site.dc_policy.dc_policy_rules.each { |rule| rez << [rule.name, rule._id] }
  rez
end

#########################################################################
# returns name for policy rule id
#########################################################################
def self.policy_rule_name_for(id)
  pol = find_by('dc_policy_rules._id' => BSON::ObjectId.from_string(id))
  return 'Invalid policy name!' if pol.nil?
  pol.dc_policy_rules.find(id).name
end

end