bottlesofbeer.rb

class BottlesOfBeer
  def count_off
    puts "How many bottles of beer have you got?"
    numbers = gets.chomp.to_i
    word_bottles = "bottles"

    numbers.downto(1) do |number|
      puts "\n#{number} #{word_bottles} of beer on the wall"
      puts "#{number} #{word_bottles} of beer!"
      puts "You take one down and pass it around,"

      next_num = number-1
      last_line = " of beer on the wall!"

      if next_num == 1
        word_bottles = word_bottles.chop
      end

      if next_num == 0
        word_bottles = "No more bottles"
      end

      if next_num > 0
        puts "#{next_num} " + word_bottles + last_line
      else
        puts "No more bottles" + last_line.chop + " :-("
      end
    end
  end

  bottle = BottlesOfBeer.new
  bottle.count_off
end

# Write a program that prints 99 bottles of beer on the wall.
# The song starts with 
# 99 bottles of beer on the wall
# 99 bottles of beer!
# You take one down and pass it around,
# 98 bottles of beer on the wall!
#
# And ends with 
# 1 bottle of beer on the wall
# 1 bottle of beer!
# You take one down and pass it around,
# No more bottles of beer on the wall :-(