From 1fba51e75d6192c923519eb1d1118f602405cb0d Mon Sep 17 00:00:00 2001
From: Sam Talpey <sam_talpey@dell.com>
Date: Mon, 5 Feb 2024 13:37:14 -0500
Subject: [PATCH] Resolve typo and change to Literal

---
 docs/oauth2.md                       | 2 +-
 httpx_oauth/clients/franceconnect.py | 4 +++-
 httpx_oauth/oauth2.py                | 3 ++-
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/docs/oauth2.md b/docs/oauth2.md
index e9c5e57..ba5ee59 100644
--- a/docs/oauth2.md
+++ b/docs/oauth2.md
@@ -30,7 +30,7 @@ Returns the authorization URL where you should redirect the user to ask for thei
     * `state: str = None`: Optional string that will be returned back in the callback parameters to allow you to retrieve state information.
     * `scope: Optional[List[str]] = None`: Optional list of scopes to ask for.
     * `code_challenge: Optional[str] = None`: Optional code_challenge in a [PKCE context](https://datatracker.ietf.org/doc/html/rfc7636).
-    * `code_challenge_method: ptional[str] = None`: Optional code_challenge_method in a [PKCE context](https://datatracker.ietf.org/doc/html/rfc7636).
+    * `code_challenge_method: Optional[Literal["plain", "S256"]] = None`: Optional code_challenge_method in a [PKCE context](https://datatracker.ietf.org/doc/html/rfc7636).
     * `extras_params: Optional[Dict[str, Any]] = None`: Optional dictionary containing parameters specific to the service.
 
 !!! example
diff --git a/httpx_oauth/clients/franceconnect.py b/httpx_oauth/clients/franceconnect.py
index 54d0557..d89be6b 100644
--- a/httpx_oauth/clients/franceconnect.py
+++ b/httpx_oauth/clients/franceconnect.py
@@ -1,5 +1,5 @@
 import secrets
-from typing import Any, Dict, List, Optional, Tuple, TypedDict
+from typing import Any, Dict, List, Literal, Optional, Tuple, TypedDict
 
 from httpx_oauth.errors import GetIdEmailError
 from httpx_oauth.oauth2 import BaseOAuth2
@@ -58,6 +58,8 @@ async def get_authorization_url(
         redirect_uri: str,
         state: Optional[str] = None,
         scope: Optional[List[str]] = None,
+        code_challenge: Optional[str] = None,
+        code_challenge_method: Optional[Literal["plain", "S256"]] = None,
         extras_params: Optional[FranceConnectOAuth2AuthorizeParams] = None,
     ) -> str:
         _extras_params = extras_params or {}
diff --git a/httpx_oauth/oauth2.py b/httpx_oauth/oauth2.py
index 8bda589..bfef17e 100644
--- a/httpx_oauth/oauth2.py
+++ b/httpx_oauth/oauth2.py
@@ -5,6 +5,7 @@
     Dict,
     Generic,
     List,
+    Literal,
     Optional,
     Tuple,
     TypeVar,
@@ -101,7 +102,7 @@ async def get_authorization_url(
         state: Optional[str] = None,
         scope: Optional[List[str]] = None,
         code_challenge: Optional[str] = None,
-        code_challenge_method: Optional[str] = None,
+        code_challenge_method: Optional[Literal["plain", "S256"]] = None,
         extras_params: Optional[T] = None,
     ) -> str:
         params = {