My first entry for coderack.org

gistfile1.rb

module Rack
  # A rack middleware for wrapping sites in http://kanyelicious.appspot.com/.
  class Kanye
    def initialize(app)
      @app = app
    end
    
    def call(env)
      request_uri =  env['REQUEST_URI']
      # Check if kanye=true exists, remove param, and stop
      if (/kanye=true/ =~ request_uri)
        env['REQUEST_URI'].gsub!("&kanye=true","")
        @app.call(env)
      else
        request_uri += ((request_uri.include?("?")) ? "&" : "?") + "kanye=true"
        full_request = "http://" + env['HTTP_HOST'] + request_uri
        # Otherwise redirect
        [302, {'Location' => "http://kanyelicious.appspot.com/" + full_request }, ['Redirecting...']]
      end
    end
  end
end