app.rb

require 'sinatra/base'


class App < Sinatra::Base

  set :sessions, true
  set :root, File.dirname(__FILE__)

  set :public_folder, 'dist/'

  get '/' do
    File.read(File.join(settings.public_folder, 'index.html'))
  end

  # development settings
  configure :development do

    set :public_folder, 'app/'

    # single level bower files
    get '/bower_components/:folder/:file' do 
      send_file('bower_components/'+params[:folder]+'/'+params[:file], :disposition => 'inline')
    end

    # two level bower files
    get '/bower_components/:folder1/:folder2/:file' do 
      send_file('bower_components/'+params[:folder1]+'/'+params[:folder2]+'/'+params[:file], :disposition => 'inline')
    end

    # custom CSS files
    get '/styles/:file' do 
      send_file('.tmp/styles/'+params[:file], :disposition => 'inline')			
    end	  

  end

end