Module: JP::IncomeTax

Defined in:
lib/luca_salary/jp-national-tax/income_tax.rb,
lib/luca_salary/jp-national-tax/income-tax/income_kouran_2020.rb

Defined Under Namespace

Modules: Kouran2020

Constant Summary collapse

MOD = 
[Kouran2020]

Class Method Summary collapse

Class Method Details

.calc_kouran(pay_amount, pay_date, partner = false, dependent = 0) ⇒ Object 



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# File 'lib/luca_salary/jp-national-tax/income_tax.rb', line 10

def calc_kouran(pay_amount, pay_date, partner = false, dependent = 0)
  responsible_module(pay_date)
    .send(:monthly_kouran, pay_amount, partner, dependent)
    .to_i
end

.responsible_module(date = nil) ⇒ Object 



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# File 'lib/luca_salary/jp-national-tax/income_tax.rb', line 16

def responsible_module(date = nil)
  if date.nil?
    raise UndefinedDateError
  elsif date.class.name == "String"
    date = Date.parse(date)
  end

  rules = MOD.map{|mod| [mod.send(:effective_date), mod] }.filter{|a| date >= a[0]}

  if rules.length > 0
    rules.sort_by{|a| a[0]}.reverse!.first[1]
  else
    raise NoValidModuleError 
  end
end