Alpha checkpoint: Echo (Phase 3)

echo3.rb

# Alpha:  Echo checkpoint (Phase 3)

def playback(input)
  if input == "Nothing!"
    "Ok, fine!"
  elsif input == "I have a lot to say"
    puts "Ok, let's hear it!"
    multiline_output_from(gets_lines_of_input)
  else
    "You said: #{input}"
  end
end

def gets_lines_of_input
  lines_of_input = []
  input = nil
  until input == "done"
    input = gets.chomp
    lines_of_input << input unless input == "done"
  end
  lines_of_input
end

def multiline_output_from(lines_of_input)
  num_lines = lines_of_input.length
  first = "You said: #{lines_of_input.shift}\n"
  last = "Finally you said: #{lines_of_input.pop}\n"
  middle = lines_of_input.map{|line| "Then, you said: #{line}\n"}.join
  first + middle + last + "Phew! Glad you got all #{num_lines} of those things off your chest!"
end

puts "What do you want to say?"
input = gets.chomp
puts playback(input)