Tracking logins

[Sam23D]

It would be nice if alongside the Users & Tokens resources ash_authentication also had a Login resource, that would create a new record whenever a user logs in.
This record can be used to track information about the user, either browser, device or location information. I'm thinking something simple like this:

defmodule Login do
  use Ash.Resource

  attributes do
    uuid_primary_key(:id)
    attribute(:user_id, :uuid)
    attribute(:meta, :map)
    timestamps()
  end
  
  actions do
    create :track_user_login do
      accept [:meta]
      argument :user_id, :uuid do
        allow_nil?(false)
      end
      change(manage_relationship(:user_id, :user, type: :append_and_remove))
    end
  end

end

Users can then add it it on the success/4 from the AuthController

defmodule MarketplacexWeb.AuthController do
  def success(conn, {login_type, _}=_activity, user, _token) do
    return_to = get_session(conn, :return_to) || ~p"/"
    Login.track_user_login (%{ meta: %{type: login_type }, user_id: user.id})

    conn
    |> delete_session(:return_to)
    |> store_in_session(user)
    |> assign(:current_user, user)
    |> redirect(to: return_to)
  end
end

[jimsynz]

This is a great idea. I'd definitely welcome a PR.