# cat hello_world.rb
require "cuba"

Cuba.use Rack::Session::Cookie

Cuba.define do
  on get do
    on "hello" do
      res.write "Hello world!"
    end

    on true do
      res.redirect "/hello"
    end
  end
end

# cat hello_world_test.rb
require "cuba/test"

scope do
  test "Homepage" do
    visit "/"

    assert has_content?("Hello world!")
  end
end

# cat config.ru
require "hello_world"

run Cuba

require "cuba"

Cuba.use Rack::Session::Cookie

Cuba.define do

  # /
  on "" do
    res.write "Home"
  end

  # /about
  on "about" do
    res.write "About"
  end

  # /styles/basic.css
  on "styles", extension("css") do |file|
    res.write "Filename: #{file}" #=> "Filename: basic"
  end

  # /post/2011/02/16/hello
  on "post/:y/:m/:d/:slug" do |y, m, d, slug|
    res.write "#{y}-#{m}-#{d} #{slug}" #=> "2011-02-16 hello"
  end

  # /username/foobar
  on "username/:username" do |username|

    user = User.find_by_username(username) # username == "foobar"

    # /username/foobar/posts
    on "posts" do

      # You can access `user` here, because the `on` blocks
      # are closures.
      res.write "Total Posts: #{user.posts.size}" #=> "Total Posts: 6"
    end

    # /username/foobar/following
    on "following" do
      res.write user.following.size #=> "1301"
    end
  end

  # /search?q=barbaz
  on "search", param("q") do |query|
    res.write "Searched for #{query}" #=> "Searched for barbaz"
  end

  on post do
    on "login"

      # POST /login, user: foo, pass: baz
      on param("user"), param("pass") do |user, pass|
        res.write "#{user}:#{pass}" #=> "foo:baz"
      end

      # If the params `user` and `pass` are not provided, this block will
      # get executed.
      on true do
        res.write "You need to provide user and pass!"
      end
    end
  end
end

$ gem install cuba