Mixpanel library in RubyMotion

mixpaneler.rb

class MP

  class << self
    
    def init_mixpanel
      @mixpanel = Mixpanel.sharedInstance
      self.identify(@mixpanel)
      @mixpanel.people.set({"$last_login" => Time.now})
      MP.update_person(@mixpanel)
    end
    
    def track(api, event, props)
      api.track(event, properties: props)
    end
    
    def identify(api)
      api.people.identify(PFUser.currentUser.objectId) if PFUser.currentUser
    end
    
    def update_person(api)
      m = appDelegate.current_member
      props = {}
      unless m.nil?
        props["$email"]                       = kill_nil(m["email"])
        props["$first_name"]                  = kill_nil(first_name(m["name"]))
        props["$last_name"]                   = kill_nil(last_name(m["name"]))
        props["$username"]                    = kill_nil(m["username"])
        props["stripe_id"]                    = kill_nil(m["stripe_id"])
        props["cc_last_four"]                 = kill_nil(m["cc_last_four"])
        props["credits"]                      = kill_nil(m["credits"])
        props["fb_uid"]                       = kill_nil(m["fb_uid"])
        props["hype_machine_username"]        = kill_nil(m["hype_machine_username"])
        props["rdio_moniker"]                 = kill_nil(m["rdio_moniker"])
        props["soundcloud_username"]          = kill_nil(m["soundcloud_username"])
        props["spotify_username"]             = kill_nil(m["spotify_username"])
        props["last_fm_username"]             = kill_nil(m["last_fm_username"])
        props["location"]                     = m["location"].latitude.to_s + ", " + m["location"].longitude.to_s unless m["location"].nil?
        props["user_id"]                      = PFUser.currentUser.objectId
        props["member_id"]                    = m.objectId
        props["recommendation_days_before"]   = kill_nil(m["recommendation_days_before"])
        props["$created"]                     = m.createdAt
        
        api.people.set(props)
        api.registerSuperProperties({"mp_name_tag" => kill_nil(m["name"])})
      end
    end

  end

end