class Clearance::FacebookController < ApplicationController

  #Js is informing that the cookie was created
  def index
    if signed_in? then 
        redirect_to FB_LOGGED_PATH #Evita multiples logins y hace que solo tenga sentido llamar el metodo con un nuevo cookie
    else #If there's no signed in user
        #The code arrives here
        @fbcookie = parse_fb_cookie
        ##Works sometimes, others sends: JSON::ParserError Exception: source did not contain any JSON!  
        #Bucle posiblemente infinito y chambon para lidiar con la excepcion mientras se soluciona  
        incomplete = true
        while incomplete do
              begin  
                incomplete = false #Intento salir del bucle
                fbu = MiniFB::OAuthSession.new(@fbcookie["access_token"], 'es_ES').get "me" 
              rescue JSON::ParserError
                incomplete = true #Reingreso en el bucle
              end
        end
        @user = find_fbuser(fbu.id) #The one from the DB
        #If the user exists
        if @user then
          sign_in_fbu(@user)
        else #If theres no user with that id
          #Register this user
          register_fbu(fbu)
        end   
    end 
  end
  
  #Js is informing that the query as cleared
  def closed
    sign_out
    render :template => "facebook/closed"
  end
  
  def sign_in_fbu(myuser)
      sign_in(myuser)
      redirect_to FB_LOGGED_PATH and return
  end
  
  #Here I reply the create the new user, I changed te verifications so that fbid is unique and password is optional
  # when fbid isn't blank
  def register_fbu(new_user)
    @user = ::User.new
    @user.fbid = new_user.id
    @user.name = new_user.name
    @user.name = new_user.email 
    if @user.save
      sign_in_fbu(@user)
    else
      render :text => "No se pudo registrar su usuario de FB"
    end    
  end
  
  #This method return nil if theres no such user and the user if there is
  def find_fbuser(myfbuid)
    return ::User.find_by_fbid(myfbuid)
  end
  
  def fbtoken(mycode)
    access_token_hash = MiniFB.oauth_access_token(FB_APP_ID, FB_CALLBACK_URL, FB_SECRET, mycode)
    return access_token = access_token_hash["access_token"]
  end
  
end