Contents

# frozen_string_literal: true

module Lite
  module Measurements
    class Length < Lite::Measurements::Base

      include Lite::Measurements::Helpers::ConversionHelper
      include Lite::Measurements::Helpers::ShiftHelper

      CONVERTER = 0.0254

      IMPERICAL_UNITS = {
        inches: 1.0,
        feet: 12.0,
        yards: 36.0,
        miles: 63_360.0,
        nautical_miles: 72_913.386
      }.freeze
      METRIC_UNITS = {
        micrometers: 0.000001,
        millimeters: 0.001,
        centimeters: 0.01,
        decimeters: 0.1,
        meters: 1.0,
        dekameters: 10.0,
        hectometers: 100.0,
        kilometers: 1_000.0
      }.freeze

      # rubocop:disable Metrics/MethodLength, Layout/LineLength
      def convert(from:, to:)
        assert_all_valid_keys!(from, to, all_keys)

        if equal_units?(from, to)
          amount
        elsif shift_between_imperical_units?(from, to)
          shift_units(amount, type: IMPERICAL_UNITS, from: from, to: to)
        elsif shift_between_metric_units?(from, to)
          shift_units(amount, type: METRIC_UNITS, from: from, to: to)
        elsif convert_to_metric_units?(from, to)
          convert_to_metric_units(amount, from: from, convert_to: :inches, convert_from: :meters, to: to)
        else
          convert_to_imperical_units(amount, from: from, convert_to: :meters, convert_from: :inches, to: to)
        end
      end
      # rubocop:enable Metrics/MethodLength, Layout/LineLength

    end
  end
end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
lite-measurements-2.0.0	lib/lite/measurements/length.rb