# *********************************************************************************
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require_relative 'validator'

require 'json'
require 'json-schema'

module URBANopt
  module Reporting
    module DefaultReports
      ##
      # power_distributio include eletrical power distribution systems information.
      ##
      class PowerDistribution
        attr_accessor :under_voltage_hours, :over_voltage_hours # :nodoc:
        ##
        # PowerDistrinution class intialize all power_distribution attributes:
        # +:under_voltage_hours+ , +:over_voltage_hours+
        ##
        # [parameters:]
        # +hash+ - _Hash_ - A hash which may contain a deserialized power_distribution.
        ##
        def initialize(hash = {})
          hash.delete_if { |k, v| v.nil? }
          hash = defaults.merge(hash)

          @under_voltage_hours = hash[:under_voltage_hours]
          @over_voltage_hours = hash[:over_voltage_hours]

          # initialize class variables @@validator and @@schema
          @@validator ||= Validator.new
          @@schema ||= @@validator.schema
        end

        ##
        # Assigns default values if attribute values do not exist.
        ##
        def defaults
          hash = {}
          hash[:under_voltage_hours] = nil
          hash[:over_voltage_hours] = nil

          return hash
        end

        ##
        # Converts to a Hash equivalent for JSON serialization.
        ##
        # - Exclude attributes with nil values.
        # - Validate power_distribution hash properties against schema.
        ##
        def to_hash
          result = {}
          result[:under_voltage_hours] = @under_voltage_hours if @under_voltage_hours
          result[:over_voltage_hours] = @over_voltage_hours if @over_voltage_hours

          # validate power_distribution properties against schema
          if @@validator.validate(@@schema[:definitions][:PowerDistribution][:properties], result).any?
            raise "power_distribution properties does not match schema: #{@@validator.validate(@@schema[:definitions][:PowerDistribution][:properties], result)}"
          end

          return result
        end

        ##
        # Merges muliple power distribution results together.
        ##
        # +new_costs+ - _Array_ - An array of ConstructionCost objects.
        def merge_power_distribition
          # method to be developed for any attributes to be aggregated or merged
        end
      end
    end
  end
end