00095.rb

# Tea timer

Shoes.app do
  @time = 0
  @backgrounds = []

  @colors = {
    white: '#ffffff',
    green: '#00ff00',
    red:   '#ff0000',
  }

  stack do
    @label = banner '0:00'
    flow do
      [2, 15, 30, 60].each do |i|
        button i.to_s do
          @time += i
        end
      end
    end
  end

  every do
    puts @time
    if @time > 0
      @time -= 1
      @label.text = "%d:%02d" % [@time/60, @time%60]

      if @time == 0
        @backgrounds += [:white, :green, :red, :green, :red]
      end
    end
    unless @backgrounds.empty?
      background @colors[@backgrounds.pop]
    end
  end
end