shift73k/lib/shift73k_web/plugs/ensure_user_exist_plug.ex

30 lines
734 B
Elixir

defmodule Shift73kWeb.EnsureUserExistPlug do
@moduledoc """
This plug ensures that there is at least one known User.
"""
import Plug.Conn
import Phoenix.Controller
alias Shift73k.Repo
alias Shift73k.Accounts.User
alias Shift73kWeb.Router.Helpers, as: Routes
@doc false
@spec init(any()) :: any()
def init(config), do: config
@doc false
@spec call(Conn.t(), atom() | [atom()]) :: Conn.t()
def call(conn, _opts) do
# If there aren't even any users,
if !Repo.exists?(User) do
# We're just going to redirect to registration
conn
|> redirect(to: Routes.user_registration_path(conn, :new))
|> halt()
else
# Otherwise we proceed as normal
conn
end
end
end