require 'base64'
require 'uri'
require 'faraday'

module FaradayMiddleware
  class BasicAuthOverwrite < Faraday::Middleware
    KEY = "Authorization".freeze

    def call(env)
      rewrite_request(env)
      @app.call(env)
    end

    private

    def rewrite_request(env)
      url = env[:url]
      user = url.user
      pass = url.password
      return unless user && pass

      # Nullify the user and password components of the url
      # We don't want to send them plain
      url.user = nil
      url.password = nil

      # Set the Authorization header
      value = Base64.encode64([user, pass].join(':')).gsub("\n", '')
      env.request_headers[KEY] = "Basic #{value}"
    end
  end
end