bottles.rb

class Bottles

  def verse(number)

    case number
    when 1
      orig_bottles = "bottle"
      new_bottles = "no more bottles"
      space = ""
      one = "it"
    when 2
      orig_bottles = "bottles"
      new_bottles = "bottle"
      space = " "
      one = "one"
    else
      orig_bottles = "bottles"
      new_bottles = "bottles"
      space = " "
      one = "one"
    end

    knock_one_down = remove(number)

    "#{number} #{orig_bottles} of beer on the wall, #{number} #{orig_bottles} of beer.
Take #{one} down and pass it around, #{knock_one_down}#{space}#{new_bottles} of beer on the wall.
"
  end

  def remove(number)
    case number
    when 1
      ""
    else
      number-1
    end

  end
end