app.rb

# -*- coding: utf-8 -*-
require 'koala'

class Safeshare < Padrino::Application
  register SassInitializer
  register Padrino::Rendering
  register Padrino::Mailer
  register Padrino::Helpers

  use Rack::Parser

  enable :sessions


  def fb_authenticator
    @fb_authenticator ||= Koala::Facebook::OAuth.new(settings.facebook_app_id, settings.facebook_secret, url_for("/auth/facebook/callback"))
  end

  ##
  # Caching support
  #
  # register Padrino::Cache
  # enable :caching
  #
  # You can customize caching store engines:
  #
  #   set :cache, Padrino::Cache::Store::Memcache.new(::Memcached.new('127.0.0.1:11211', :exception_retry_limit => 1))
  #   set :cache, Padrino::Cache::Store::Memcache.new(::Dalli::Client.new('127.0.0.1:11211', :exception_retry_limit => 1))
  #   set :cache, Padrino::Cache::Store::Redis.new(::Redis.new(:host => '127.0.0.1', :port => 6379, :db => 0))
  #   set :cache, Padrino::Cache::Store::Memory.new(50)
  #   set :cache, Padrino::Cache::Store::File.new(Padrino.root('tmp', app_name.to_s, 'cache')) # default choice
  #

  ##
  # Application configuration options
  #
  # set :raise_errors, true       # Raise exceptions (will stop application) (default for test)
  # set :dump_errors, true        # Exception backtraces are written to STDERR (default for production/development)
  # set :show_exceptions, true    # Shows a stack trace in browser (default for development)
  # set :logging, true            # Logging in STDOUT for development and file for production (default only for development)
  # set :public_folder, "foo/bar" # Location for static assets (default root/public)
  # set :reload, false            # Reload application files (default in development)
  # set :default_builder, "foo"   # Set a custom form builder (default 'StandardFormBuilder')
  # set :locale_path, "bar"       # Set path for I18n translations (default your_app/locales)
  # disable :sessions             # Disabled sessions by default (enable if needed)
  # disable :flash                # Disables sinatra-flash (enabled by default if Sinatra::Flash is defined)
  # layout  :my_layout            # Layout can be in views/layouts/foo.ext or views/foo.ext (default :application)
  #

  ##
  # You can configure for a specified environment like:
  #
  #   configure :development do
  #     set :foo, :bar
  #     disable :asset_stamp # no asset timestamping for dev
  #   end
  #

  ##
  # You can manage errors like:
  #
  #   error 404 do
  #     render 'errors/404'
  #   end
  #
  #   error 505 do
  #     render 'errors/505'
  #   end
  #
  #

  error Koala::Facebook::APIError do
    session[:fb_access_token] = nil
    redirect "/auth/facebook"
  end

  before do
    # Always serve over HTTPS in production
    if settings.environment == :production && request.scheme != 'https'
      redirect "https://#{request.env['HTTP_HOST']}"
    end

    # Setup facebook
    if settings.environment == :production
      @fb_graph  = Koala::Facebook::API.new(session[:fb_access_token])
      @fb_app  =  @fb_graph.get_object(settings.facebook_app_id)
      if session[:fb_access_token]
        @fb_user = @fb_graph.get_object("me")
        @fb_friends = @fb_graph.get_connections('me', 'friends')
      else
        logger.info 'fb_access_token is NOT set'
      end
    else
      setup_mock()
    end

  end

  get '/' do
    @entries = []
    if @fb_user
      @entries = Entry.where(:fb_owner_id=>@fb_user['id'])
    end
    render :index
  end

  # used by Canvas apps - redirect the POST to be a regular GET
  post '/' do
    redirect '/'
  end

  get '/auth/facebook' do
    session[:fb_access_token] = nil
    redirect fb_authenticator.url_for_oauth_code(:permissions => settings.facebook_scope)
  end

  get '/auth/facebook/callback' do
    logger.info 'Setting fb_access_token'
    session[:fb_access_token] = fb_authenticator.get_access_token(params[:code])
    redirect '/'
  end

  def setup_mock
    # Setup mock data during development
    logger.info 'Setting up mock'
  end

end