feat: port basic functionality to elixir

lib/components_elixir_web/controllers/auth_controller.ex

@@ -0,0 +1,27 @@
+defmodule ComponentsElixirWeb.AuthController do
+  use ComponentsElixirWeb, :controller
+
+  alias ComponentsElixir.Auth
+
+  def authenticate(conn, %{"password" => password}) do
+    case Auth.authenticate(password) do
+      {:ok, :authenticated} ->
+        conn
+        |> Auth.sign_in()
+        |> put_flash(:info, "Successfully logged in!")
+        |> redirect(to: ~p"/")
+
+      {:error, :invalid_credentials} ->
+        conn
+        |> put_flash(:error, "Invalid password")
+        |> redirect(to: ~p"/login")
+    end
+  end
+
+  def logout(conn, _params) do
+    conn
+    |> Auth.sign_out()
+    |> put_flash(:info, "Logged out successfully")
+    |> redirect(to: ~p"/login")
+  end
+end