signup and room waiting

app/controllers/users_controller.rb

@@ -1,6 +1,7 @@
 class UsersController < ApplicationController
 
   before_action :find_user, only: [:edit, :update]
+  before_action :ensure_unauthenticated, only: [:new, :create]
 
   # POST /users
   def create
@@ -15,6 +16,11 @@ class UsersController < ApplicationController
     end
   end
 
+  # GET /signup
+  def new 
+    @user = User.new
+  end
+
   # GET /users/:user_uid/edit
   def edit
     if current_user
@@ -64,6 +70,10 @@ class UsersController < ApplicationController
     end
   end
 
+  def ensure_unauthenticated
+    redirect_to current_user.main_room if current_user
+  end
+
   def user_params
     params.require(:user).permit(:name, :email, :password, :password_confirmation, :new_password, :provider)
   end