smallnsexy.rb

require 'rubygems'
require 'pathname'
require 'rails/all'

class SmallNSexy < Rails::Application
  config.session_store :cookie_store, :key => '_omg_session'
  config.secret_token = '1319d8ccf1b9bfbdefcb6aa380a044ce'
  # ^ because -> http://twitter.com/wycats/status/13898343700

  class Page
    attr_accessor :name, :body

    def self.create name, body
      File.open((SmallNSexy.root + 'pages' + name).to_s, 'w') do |file| file << body end
      open name
    end

    def self.open name
      new name, File.read((SmallNSexy.root + 'pages' + name).to_s) rescue nil
    end

    def initialize name, body
      @name, @body = name, body
    end
    
    def to_json
      %Q{{"name": "#{name or 'null'}", "body": "#{body or 'null'}"}}
    end
  end

  module Actions
    class << self
      def render
        lambda do |env|
          if page = Page.open(env["action_dispatch.request.path_parameters"][:name])
            [200, {'Content-Type' => 'application/x-json'}, [page.to_json]]
          else
            [404, {'Content-Type' => 'application/x-json'}, ['Page not found!']]
          end
        end
      end

      def create
        lambda do |env|
          vars = env["rack.request.form_hash"]
          if vars and vars['name'] and vars['body']
            page = Page.create vars['name'], vars['body']
            [200, {'Content-Type' => 'application/x-json'}, [page.to_json]]
          else
            [400, {'Content-Type' => 'application/x-json'}, ['Invalid parameters!'] ]
          end
        end
      end
    end
  end
end

SmallNSexy.routes.draw do |map|
  post  '/pages'        => SmallNSexy::Actions.create
  get   '/pages/*name'  => SmallNSexy::Actions.render
end

if $0 =~ /spec/
  require 'spec'

  describe SmallNSexy::Page do
    before do `echo page contents >> #{SmallNSexy.root}/pages/example` end
    after do  `rm -rf #{SmallNSexy.root}/pages/example` end

    context 'creation' do
      subject { SmallNSexy::Page.create 'bar', 'contents of the page' }
      it { should be_a SmallNSexy::Page }
      it { subject.name.should == 'bar' }
      it { subject.body.should == 'contents of the page'}
    end

    context 'initializing' do
      it 'finds an existing page on Page.open' do SmallNSexy::Page.open('example').should be_a SmallNSexy::Page end
      it 'returns nil when a page is not found' do SmallNSexy::Page.open('non').should be_nil end
    end

    it 'renders a page in [SmallNSexy.root] on #body' do
      SmallNSexy::Page.open('example').body.should == "page contents\n"
    end
  end
end