feat: add locale field to AccountUser, extract from user JWT claims

The app_registry_v2 JWT format nests user info under a "user" key
including a "locale" field. AccountUser now carries locale (defaults
to nil for backward compat with older tokens that omit it).

Author: martinatpeek

lib/peek_app_sdk/account_user.ex

@@ -2,22 +2,16 @@ defmodule PeekAppSDK.AccountUser do
   @moduledoc """
   When iFrames are loaded, who is the logged in user?
   """
-  @fields [
-    :email,
-    :id,
-    :is_peek_admin,
-    :name,
-    :primary_role
-  ]
-  @enforce_keys @fields
-  defstruct @fields
+  @enforce_keys [:email, :id, :is_peek_admin, :name, :primary_role]
+  defstruct [:email, :id, :is_peek_admin, :name, :primary_role, locale: nil]
 
   @type t :: %__MODULE__{
           email: String.t(),
           id: String.t(),
           is_peek_admin: boolean(),
           name: String.t(),
-          primary_role: String.t()
+          primary_role: String.t() | nil,
+          locale: String.t() | nil
         }
 
   @doc """

lib/peek_app_sdk/plugs/peek_auth.ex

@@ -80,19 +80,21 @@ defmodule PeekAppSDK.Plugs.PeekAuth do
   end
 
   defp build_account_user(%{
-         "user" => %{
-           "id" => current_user_id,
-           "email" => current_user_email,
-           "is_admin" => current_user_is_peek_admin,
-           "name" => current_user_name
-         }
+         "user" =>
+           %{
+             "id" => current_user_id,
+             "email" => current_user_email,
+             "is_admin" => current_user_is_peek_admin,
+             "name" => current_user_name
+           } = user
        }) do
     %PeekAppSDK.AccountUser{
       email: current_user_email,
       id: current_user_id,
       is_peek_admin: current_user_is_peek_admin,
       name: current_user_name,
-      primary_role: nil
+      primary_role: nil,
+      locale: user["locale"]
     }
   end
 

test/peek_app_sdk/account_user_test.exs

@@ -13,6 +13,7 @@ defmodule PeekAppSDK.AccountUserTest do
       assert hook.id == nil
       assert hook.is_peek_admin == nil
       assert hook.primary_role == nil
+      assert hook.locale == nil
     end
   end
 end

test/peek_app_sdk/plugs/peek_auth_test.exs

@@ -216,6 +216,35 @@ defmodule PeekAppSDK.Plugs.PeekAuthTest do
       assert conn.assigns.peek_account_user.is_peek_admin == true
       assert conn.assigns.peek_account_user.name == "Legacy User"
       assert conn.assigns.peek_account_user.primary_role == nil
+      assert conn.assigns.peek_account_user.locale == nil
+    end
+
+    test "extracts locale from user JWT claims into account_user" do
+      install_id = "test_install_id"
+
+      config = PeekAppSDK.Config.get_config()
+      shared_secret_key = config.peek_app_secret
+      signer = Joken.Signer.create("HS256", shared_secret_key)
+
+      params = %{
+        "iss" => "app_registry_v2",
+        "sub" => install_id,
+        "exp" => DateTime.utc_now() |> DateTime.add(60) |> DateTime.to_unix(),
+        "user" => %{
+          "email" => "user@example.com",
+          "id" => "user123",
+          "is_admin" => false,
+          "name" => "Test User",
+          "locale" => "fr"
+        }
+      }
+
+      {:ok, token, _claims} = Token.generate_and_sign(params, signer)
+      conn = conn(:post, "/", %{"peek-auth" => token})
+
+      conn = PeekAuth.set_peek_install_id(conn, %{})
+
+      assert conn.assigns.peek_account_user.locale == "fr"
     end
 
     test "handles non-keyword list and non-map options" do