billaul/period

require_relative 'has_many.rb'
require_relative 'has_many/days.rb'
require_relative 'has_many/weeks.rb'
require_relative 'has_many/months.rb'
require_relative 'has_many/quarters.rb'
require_relative 'has_many/years.rb'

module Period
  class StandardPeriod < Period::FreePeriod
    def initialize(object)
      time = time_parse(object,  I18n.t(:date_is_invalid, scope: %i[period standard_period]) )
      super(time.send("beginning_of_#{_period}")..time.send("end_of_#{_period}"))
    end

    def next
      self.class.new(from.send("next_#{_period}"))
    end
    alias succ next

    def prev
      self.class.new(from.send("prev_#{_period}"))
    end

    def _period
      self.class._period
    end

    def self._period
      name.split('::').last.downcase
    end

    def to_i
      1.send(_period)
    end

    def -(duration)
      self.class.new(from - duration)
    end

    def +(duration)
      self.class.new(to + duration)
    end

    def iso_date
      from
    end

    def to_s
      raise NotImplementedError
    end

    def i18n
      raise NotImplementedError
    end

    def i18n_scope
      [:period, :standard_period, _period]
    end
  end
end