I am implementing a websocket purely using elixir and cowboy. How can i close a websocket connection in the websocket_init/1 function? I want to send a reason to close the connection and then pattern match it in the terminate/3 function, so that i can do some other functions inside it.

def websocket_init(state) do
    info("Initializing connection")
    case Account.get_user(state.id) do
      %User{} ->
        {:ok, state}
      nil ->
        {:error, "No account"}
    end
  end

So that in the terminate/3 function I can do something like this:

def terminate({:error, "No account"}, _req, _state) do
    info("No account")
    :ok
  end

def terminate(_reason, _req, _state) do
   info("Terminating connection")
   :ok
end