Go Mobs!

clock.rb

class Clock
  def self.at(hours=0, minutes=0)
    new(hours, minutes)
  end

  def initialize(hours=0, minutes=0)
    array = minutes.divmod 60

    @minutes = array[1]
    @hours = array[0] + hours
  end

  def ==(other)
    seconds == other.seconds
  end

  def seconds
    (@hours * 60 * 60) + (@minutes * 60) 
  end 

  def to_s
    hour_string = @hours.to_s.rjust(2, "0")
    minute_string = @minutes.to_s.rjust(2, "0")
    "#{hour_string}:#{minute_string}"
  end

  def + minutes
    @minutes += minutes
    num, @minutes = @minutes.divmod 60
    @hours = num + @hours
    @hours = @hours % 24
    self
  end

  def - minutes
    @minutes -= minutes
    puts "minutes :#{@minutes} hours :#{@hours}"
    num, @minutes = @minutes.divmod 60
    puts "minutes :#{@minutes} hours :#{@hours}"
    @hours = num + @hours
    puts "minutes :#{@minutes} hours :#{@hours}"
    @hours = @hours % 24
    puts "minutes :#{@minutes} hours :#{@hours}"
    self
  end

end