# frozen_string_literal: true

require 'thor'
require 'my_age'
module MyAge
  class CLI < Thor
    attr_accessor :dob
    include MyAge::Calculator

    desc 'is AGE', '-d date_of_birth -a as_of_date, Dates are in yyyy-mm-dd format'
    method_option :dob, aliases: 'd', desc: 'date of birth in yyyy-mm-dd', required: true
    method_option :as_of, aliases: 'a', desc: 'as of date in yyyy-mm-dd', required: false
    def is
      self.dob = get_date(options[:dob])
      date = options[:as_of].present? ? get_date(options[:as_of]) : Date.today
      puts age(date)
    end

    private

    def get_date(date)
      if date =~ /^\d{4}-\d{2}-\d{2}$/
        DateTime.strptime(date, '%Y-%m-%d')
      else
        date_from_active_support_core_ext_helper(date)
      end
    rescue NoMethodError
      Date.send(date)
    end

    def date_from_active_support_core_ext_helper(date)
      dates = date.delete(')').split('(')
      method = dates[0].to_sym
      arg = dates[1]
      arg.nil? ? Date.today.send(method) :
                 Date.today.send(method, arg.to_i)
    end
  end
end