Allow the metal piece to run in isolation
require(File.dirname(__FILE__) + "/../../config/environment") unless defined?(Rails)
require 'sinatra'

class Auth < Sinatra::Application
  #enable :sessions

  configure do
    FB = YAML.load_file(File.dirname(__FILE__) + "/../../config/facebooker.yml")
  end

  helpers do
    # Load portal and setup facebook oauth
    def facebook_client
      portal = Portal.find(params[:portal_id])
      if RAILS_ENV == "production" && @portal.facebook_api_key
        facebook_connect = FB["production"]["alternative_keys"][portal.facebook_api_key]
      elsif request.host == '127.0.0.1' #debugging keys with callback domain 127.0.0.1
        facebook_connect = {"secret_key" => 'XXXXXXXX', "application_id" => 'XXXX' }
        portal = Portal.find_by_default_start_portal(true)
      else
        facebook_connect = FB[RAILS_ENV]
      end
      facebook_connect["application_id"] = portal.facebook_api_key unless facebook_connect["application_id"]

      callback_url = "#{request.scheme}://#{request.host}:#{request.port}/auth/facebook/callback?portal_id=#{portal.id}"
      return FacebookOAuth::Client.new(
        :application_id => facebook_connect["application_id"],
        :application_secret => facebook_connect["secret_key"],
        :callback => callback_url)
    end

  end

  get '/auth/facebook' do
    client = facebook_client
    if params[:format] == "mobile"
      redirect "#{client.authorize_url}&display=touch"
    else
      redirect client.authorize_url
    end
  end

  get '/auth/facebook/callback' do
    client = facebook_client
    access_token = client.authorize(:code => params[:code]) # it's possible to load data from facebook by this access_token.token
    info = client.me.info

    current_user = User.find_by_fb_user_id(info["id"])
    if current_user
       session[:user_id]  = current_user.id
    else
      current_user = User.new(
        :name => info["name"],
        :login => info["name"].downcase.gsub(" ","_"),
        :password => "", :email => "",
        :fb_user_id => info["id"],
        :portal_id => @portal.id,
        :original_potal_id => @portal.id)
      if current_user.save
        session[:user_id] = current_user.id
      end
    end
    redirect "/home"
  end