Warden::Manager.before_failure do |env, opts|
  # Sinatra/Padrino is very sensitive to the request method and
  # since authentication could fail on any type of method, we need
  # to set it for the failure app so it is routed to the correct block.
  env['REQUEST_METHOD'] = "POST"
end

Warden::Strategies.add(:basic_http) do
  def valid?
    # Check if valid and store an instance var
    @auth ||= Rack::Auth::Basic::Request.new(request.env)
    @auth.provided? && @auth.basic? && @auth.credentials
  end

  def authenticate!
    
    # We presume that valid? has been passed and @auth is instance of 
    # Rack::Auth::Basic::Request so we'll suck out the credentials here.
    username = @auth.credentials[0]
    password = @auth.credentials[1]

    if username == "Aladdin" && password == "open sesame"
      success! 1 # @todo Replace with user ID
    else
      fail!("Could not log in")
    end
  end
end