# frozen_string_literal: true

module TaxCalculator
  class Deductions
    STANDARD_DEDUCTION = 25_900

    attr_reader :federal, :fica, :ohio, :columbus

    def initialize(income, four_01_k, ira, hsa, health_premiums)
      @federal = for_federal(income, four_01_k, ira, hsa, health_premiums)
      @fica = for_fica(income, hsa, health_premiums)
      @ohio = for_ohio(income, four_01_k, ira, hsa, health_premiums)
      @columbus = for_columbus(income, hsa, health_premiums)
    end

    def for_federal(income, four_01_k, ira, hsa, health_premiums)
      (income - (four_01_k + ira + hsa + health_premiums + STANDARD_DEDUCTION))
    end

    def for_fica(income, hsa, health_premiums)
      (income - (hsa + health_premiums))
    end

    def for_ohio(income, four_01_k, ira, hsa, health_premiums)
      num_exemptions = 2
      personal_exemption = 1_900 * num_exemptions
      (income - (four_01_k + ira + hsa + health_premiums + personal_exemption))
    end

    def for_columbus(income, hsa, health_premiums)
      income - (hsa + health_premiums)
    end
  end
end