# frozen_string_literal: true

require 'ipaddr'

# a class that creates facts based on the subnet
class SubnetAttributes
  SUBNET_TO_ATTRIBUTES = {
    '198.18.17.0/24' => { environment: 'prod', region: 'drw1', country: 'au' },
    '198.18.18.0/24' => { environment: 'test', region: 'drw1', country: 'au' }
  }.freeze

  # Default attributes if no subnet matches, also defined as a constant
  DEFAULT_ATTRIBUTES = { environment: 'unknown', region: 'unknown', country: 'unknown' }.freeze

  # provide ip to return attributes
  def self.attributes(ip)
    SUBNET_TO_ATTRIBUTES.each do |subnet, attrs|
      return attrs if IPAddr.new(subnet).include?(IPAddr.new(ip))
    end

    DEFAULT_ATTRIBUTES
  end
end

# Use the primary IP address from facts
ip = Facter.value(:networking)['ip']

# Call the class method directly without creating an instance
subnet_attributes = SubnetAttributes.attributes(ip)

# Add separate facts for environment, region, and country
Facter.add('environment') { setcode { subnet_attributes[:environment] } }
Facter.add('region') { setcode { subnet_attributes[:region] } }
Facter.add('country') { setcode { subnet_attributes[:country] } }