class Chronic::RepeaterDayName

def initialize(type, options = {})
  super
  @current_date = nil
end

def next(pointer)
  super
  direction = pointer == :future ? 1 : -1
  unless @current_date
    @current_date = ::Date.new(@now.year, @now.month, @now.day)
    @current_date += direction
    day_num = symbol_to_number(@type)
    while @current_date.wday != day_num
      @current_date += direction
    end
  else
    @current_date += direction * 7
  end
  next_date = @current_date.succ
  Span.new(Chronic.construct(@current_date.year, @current_date.month, @current_date.day), Chronic.construct(next_date.year, next_date.month, next_date.day))
end

def symbol_to_number(sym)
  lookup = {:sunday => 0, :monday => 1, :tuesday => 2, :wednesday => 3, :thursday => 4, :friday => 5, :saturday => 6}
  lookup[sym] || raise("Invalid symbol specified")
end

def this(pointer = :future)
  super
  pointer = :future if pointer == :none
  self.next(pointer)
end

def to_s
  super << '-dayname-' << @type.to_s
end

def width
  DAY_SECONDS
end