Adding HTTP Authentication to a Middleman app using Heroku environment variables

gistfile1.rb

require "rubygems"

require "rack"
require "middleman/rack"
require "rack/contrib/try_static"

protected_middleman = Rack::Auth::Basic.new(Middleman.server) do |username, password|
  [username, password] == [ENV['HTTP_USERNAME'], ENV['HTTP_PASSWORD']]
  # Enable proper HEAD responses
  use Rack::Head

  # Attempt to serve static HTML files
  use Rack::TryStatic,
    :root => "tmp",
    :urls => %w[/],
    :try => ['.html', 'index.html', '/index.html']

  # Serve a 404 page if all else fails
  run lambda { |env|
    [
      404,
      {
        "Content-Type"  => "text/html",
        "Cache-Control" => "public, max-age=60"
      },
      File.open("tmp/404/index.html", File::RDONLY)
    ]
  }
end

# Build the static site when the app boots
`bundle exec middleman build`

run protected_middleman