35 lines
945 B
Elixir
35 lines
945 B
Elixir
defmodule Shift73kWeb.EnsureAllowRegistrationPlug 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
|
|
|
|
@app_vars Application.compile_env(:shift73k, :app_global_vars, allow_registration: :true)
|
|
@app_allow_registration @app_vars[:allow_registration]
|
|
|
|
@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, or registration is allowed
|
|
if !Repo.exists?(User) || @app_allow_registration do
|
|
# We will allow registration
|
|
conn
|
|
else
|
|
# Otherwise,
|
|
# if app is configured to not allow registration,
|
|
# and there is a user,
|
|
# then we redirect to root URL
|
|
conn
|
|
|> redirect(to: "/")
|
|
|> halt()
|
|
end
|
|
end
|
|
end
|