Add the logout for the API.

lib/link_shortener_web/controllers/api/v1/accounts_controller.ex

@@ -23,4 +23,12 @@ defmodule LinkShortenerWeb.Api.V1.AccountsController do
       |> render(:user, %{user: user, token: token})
     end
   end
+
+  def sign_out(conn, %{}) do
+    token = Guardian.Plug.current_token(conn)
+    Guardian.revoke(token)
+    conn
+    |> put_status(:ok)
+    |> render(:sign_out, %{token: token})
+  end
 end

lib/link_shortener_web/controllers/api/v1/accounts_json.ex

@@ -3,9 +3,15 @@ defmodule LinkShortenerWeb.Api.V1.AccountsJSON do
 
   def user(%{user: user, token: token}) do
     %{
-      id: user.id,
       email: user.email,
       token: token
     }
   end
+
+  def sign_out(%{token: token}) do
+    %{
+      message: "Successfully sign out",
+      token: token
+    }
+  end
 end