defmodule BackendWeb.UserSocket do
  use Phoenix.Socket
  require Logger


  ## Channels
  channel("user:*", BackendWeb.ConnectedUserChannel)

  @impl true
  def connect(%{"user_name" => user_name}, socket, _connect_info) do
    {:ok, assign(socket, :user_name, user_name)}
  end

  def connect(_params, _socket, _connect_info) do
    Logger.warning("WebSocket connection rejected: user_name required")
    {:error, %{reason: "user_name required"}}
  end

  @impl true
  def id(%{assigns: %{user_name: user_name}}) do
    # assign websocket to user name
    # allows other parts of app to manipulate all sockets for a given user
    "user_socket:#{user_name}"
  end

  def id(_socket), do: nil
end