Dictionary sinanra app based on Bing API

config.ru

require './translate_app'
run Sinatra::Application

Gemfile

source 'http://rubygems.org'
gem 'sinatra'
gem 'haml'

index.haml

- # this file should be on /views folder
%html
  %head
    %title Simple translation app
  %body    
    #header
      %h1 EN-RU translation app
      - if translation
        %h2= "#{word} - #{translation}"
      - elsif word
        %h2 No translation found
    #content
      %form{ :action => "" }
        %label{ :for => "body"} Enter word:
        %input{ :name => "body" }
        %input{ :type => "submit", :value => "Translate" }

translate_api.rb

require 'net/http'
require 'uri'

class Hash
  def to_uri
    to_a.map{ |p| p.join('=') }.join('&')
  end
end

class TranslateAPI
  URL = "http://api.bing.net/json.aspx"
  PARAMS = {
    # get your AppId here: http://www.bing.com/toolbox/webmaster/, this one is fake
    :AppId => "WEFIUN23015K1J24K23U2O3U5N2O3N5K2J3N",
    :Sources => :Translation,
    :Version => :"2.2",
    :"Translation.SourceLanguage" => :en,
    :"Translation.TargetLanguage" => :ru
  }
  
  def self.translate(query)
    params = {:Query => query}
    
    url = ''
    url << URL
    url << '?'
    url << PARAMS.to_uri
    url << '&'
    url << params.to_uri
    
    puts url
    
    data = Net::HTTP.get(URI(url))
    data.scan(/\{\"TranslatedTerm\"\:\"(.+)\"\}/).flatten.first
  end
end

translate_app.rb

require "sinatra"
require 'haml'
require "./translate_api"

set :views, File.dirname(__FILE__) + "/views"

get "/" do
  if @word = params[:body]
    @translation = TranslateAPI.translate(@word)
  end
  haml :index, :locals => {:word => @word, :translation => @translation}
end

# this route is for load testing with blitz.io
get "/mu-ec30996a-59e79091-ba72de54-819405ca" do
  '42'
end

not_found do
  "Ooops ta dam"
end