The Hack API

WARNING!!! WARNING!!! WARNING!!! THIS DOCUMENT IS NOTHING MORE THAN A BRAINSTORMING SESSION! FOR ACTUAL API USAGE PLEASE REFER TO spec/hack_spec.rb AND example-app/blog.rb

(and on another note, when it's finished, which should be soon, i'll update this all a-nicey for you'se wanting to hack away at/with hack)

Basic GET using #uri:

Hack.app do
  uri (or map or get? maybe get...) '/' do
    'Hello World'
  end
end

GET/POST/PUT/DELETE:

Hack.app do
  get('/') { 'You got me' }
  post('/') { 'You posted me' }
  put('/') { 'You put me' }
  delete('/') { 'You deleted me' }
end

(Possible) alternative syntax:

Hack.app do
  uri '/' do
    get { 'You got me' }
    post { 'You posetd me' }
    put { 'You put me' }
    delete { 'You deleted me' }
  end
end

Running an app on port 4000:

@app = Hack.app { url('/') { 'Hello World!' } }
@app.run! :port => 4000

Alternative syntax:

Hack.run!(:port => 4000) { url('/') { 'Hello World!' } }

Serving a path (+ performance awesome for Apache/Lighttpd/Nginx):

Hack.app do
  serve 'images' # mounts images using Rack::DirHandler
  serve 'music', :via => :x_send_file # uses x-sendfile (Apache/Lighttpd)
  serve 'video', :via => :x_acell_redirect # uses x-acell-redirect (Nginx)
end

Redirecting requests (w/ permanent + temporary options):

Hack.app do
  uri('/') { 'Welcome home.' }
  url('/go-home-for-a-bit') { redirect '/', :temporarily }
  uri('/go-home-forever') { redirect '/', :permanently }
end

404, 500, + custom status rendering:

Hack.app do
  uri('/404') { 404 }
  uri('/500') { 500 }
  uri('/custom-404') { 'Page not found.', 404 }
  uri('/custom-500') { 'Error, damnit!', 404 }
end

Turning off threading:

Hack.app :threaded => false do
  uri '/' do
    sleep 10 # will block other requests for 10 seconds
  end
end

Including custom modules for the 'actions' to use:

module OurTemplateEngine
  def render_template(template)
    "You rendered #{template}!"
  end
end

Hack.app do
  include OurTemplateEngine  
  uri '/' do
    render_template 'home' # returns "You rendered home!"
  end
end

Using regex capture groups in uri definitions, as paramaters, this rules:

Hack.app do
  uri '/user/(\w+)', :as => :users_hompeage do |username|
    "Welcome to #{username}'s page."
  end
  uri '/user/(\w+)/edit' do |username|
    "Trying to edit #{username}'s profile, eh?"
  end
end

These TODOs are listed by priority:

• TODO: Working with sessions. They'll be cookie based, stolen form Rails :) auto-generates a secret to ./.hack-secret, uses that, rather than having to specify your own.
• TODO: accessing request/response/session/params, via an OpenStruct
• TODO: Nice exception handling
• TODO: access.log, error.log
• TODO: Filters, somehow...
• TODO: Nesting uri's, is this even a good idea?