api_controller.cr

class ApiController < ApplicationController
  def index
    session[%w(a b c d e f g h i j k l m n o p).sample] = Time.now.to_s 

    respond_with do
      json session.to_h.to_json
    end
  end
end

routes.cr

Amber::Server.configure do
  pipeline :web do
    # Plug is the method to use connect a pipe (middleware)
    # A plug accepts an instance of HTTP::Handler
    # plug Amber::Pipe::PoweredByAmber.new
    # plug Amber::Pipe::ClientIp.new(["X-Forwarded-For"])
    # plug Citrine::I18n::Handler.new
    plug Amber::Pipe::Error.new
    plug Amber::Pipe::Logger.new
    plug Amber::Pipe::Session.new
    plug Amber::Pipe::Flash.new
    plug Amber::Pipe::CSRF.new
  end

  pipeline :api do
    # plug Amber::Pipe::PoweredByAmber.new
    plug Amber::Pipe::Error.new
    plug Amber::Pipe::Logger.new
    plug Amber::Pipe::Session.new
    # plug Amber::Pipe::CORS.new
  end

  # All static content will run these transformations
  pipeline :static do
    plug Amber::Pipe::PoweredByAmber.new
    plug Amber::Pipe::Error.new
    plug Amber::Pipe::Static.new("./public")
  end

  routes :web do
    resources "/animals", AnimalController
    get "/", HomeController, :index
  end

  routes :api do
    get "/api/animals", AnimalController, :index
    get "/api/sessions", ApiController, :index
  end

  routes :static do
    # Each route is defined as follow
    # verb resource : String, controller : Symbol, action : Symbol
    get "/*", Amber::Controller::Static, :index
  end
end