class Chronic::RepeaterFortnight

def initialize(type)
  super
end

def next(pointer)
  super
  if !@current_fortnight_start
    case pointer
    when :future
      sunday_repeater = RepeaterDayName.new(:sunday)
      sunday_repeater.start = @now
      next_sunday_span = sunday_repeater.next(:future)
      @current_fortnight_start = next_sunday_span.begin
    when :past
      sunday_repeater = RepeaterDayName.new(:sunday)
      sunday_repeater.start = (@now + RepeaterDay::DAY_SECONDS)
      2.times { sunday_repeater.next(:past) }
      last_sunday_span = sunday_repeater.next(:past)
      @current_fortnight_start = last_sunday_span.begin
    end
  else
    direction = pointer == :future ? 1 : -1
    @current_fortnight_start += direction * FORTNIGHT_SECONDS
  end
  Span.new(@current_fortnight_start, @current_fortnight_start + FORTNIGHT_SECONDS)
end

def offset(span, amount, pointer)
  direction = pointer == :future ? 1 : -1
  span + direction * amount * FORTNIGHT_SECONDS
end

def this(pointer = :future)
  super
  pointer = :future if pointer == :none
  case pointer
  when :future
    this_fortnight_start = Time.construct(@now.year, @now.month, @now.day, @now.hour) + RepeaterHour::HOUR_SECONDS
    sunday_repeater = RepeaterDayName.new(:sunday)
    sunday_repeater.start = @now
    sunday_repeater.this(:future)
    this_sunday_span = sunday_repeater.this(:future)
    this_fortnight_end = this_sunday_span.begin
    Span.new(this_fortnight_start, this_fortnight_end)
  when :past
    this_fortnight_end = Time.construct(@now.year, @now.month, @now.day, @now.hour)
    sunday_repeater = RepeaterDayName.new(:sunday)
    sunday_repeater.start = @now
    last_sunday_span = sunday_repeater.next(:past)
    this_fortnight_start = last_sunday_span.begin
    Span.new(this_fortnight_start, this_fortnight_end)
  end
end

def to_s
  super << '-fortnight'
end

def width
  FORTNIGHT_SECONDS
end