Duolingo translate API

duolingoTanslateAPI.rb

# Duolingo's unofficial translation API
# Please comment or send me a message if you find more endpoint and/or info

require "open-uri"
require "json"
require "cgi"

def ask()
  # Get languages
  puts "* Use language codes, i.e. `en`, `de`, `ru` *"
  print "To language > "
  to_lang = gets.chomp

  print "From language [en] > "
  from_lang = gets.chomp
  if from_lang == ""
    from_lang = "en"
  end

  # Ask for input
  print "Single word [1 - Default] | Word list [2] | Sentence [3] > "
  input_choice = gets.to_i
  input_type = ""
  input = ""
  case input_choice
    when 2
      input_type = "tokens"
      print "['Word', 'array', 'please'] > "
      input = CGI.escape( gets.chomp )
    when 3
      input_type = "sentence"
      print "Sentence > "
      input = CGI.escape( gets.chomp )
    else
      input_type = "token"
      print "Word > "
      input = CGI.escape( gets.chomp )
  end
  return "https://d2.duolingo.com/api/1/dictionary/hints/#{from_lang}/#{to_lang}?#{input_type}=#{input}"
end

puts open( ask() ).read