Add code_verifier and code_challenge to Authorization class (#2810)

Author: molcay

sdk/python/packages/flet-runtime/src/flet_runtime/auth/authorization.py

@@ -9,11 +9,12 @@
 from flet.version import version
 from flet_core.locks import AsyncNopeLock, NopeLock
 from flet_core.utils import is_asyncio
+from oauthlib.oauth2 import WebApplicationClient
+from oauthlib.oauth2.rfc6749.tokens import OAuth2Token
+
 from flet_runtime.auth.oauth_provider import OAuthProvider
 from flet_runtime.auth.oauth_token import OAuthToken
 from flet_runtime.auth.user import User
-from oauthlib.oauth2 import WebApplicationClient
-from oauthlib.oauth2.rfc6749.tokens import OAuth2Token
 
 
 class Authorization:
@@ -76,6 +77,8 @@ def get_authorization_data(self) -> Tuple[str, str]:
             self.provider.redirect_url,
             scope=self.scope,
             state=self.state,
+            code_challenge=self.provider.code_challenge,
+            code_challenge_method=self.provider.code_challenge_method,
         )
         return authorization_url, self.state
 
@@ -106,6 +109,7 @@ def __get_request_token_request(self, code: str):
             redirect_uri=self.provider.redirect_url,
             client_secret=self.provider.client_secret,
             include_client_id=True,
+            code_verifier=self.provider.code_verifier,
         )
         headers = self.__get_default_headers()
         headers["content-type"] = "application/x-www-form-urlencoded"

sdk/python/packages/flet-runtime/src/flet_runtime/auth/oauth_provider.py

@@ -17,6 +17,9 @@ def __init__(
         user_endpoint: Optional[str] = None,
         user_id_fn: Optional[Callable] = None,
         group_scopes: Optional[List[str]] = None,
+        code_challenge: Optional[str] = None,
+        code_challenge_method: Optional[str] = None,
+        code_verifier: Optional[str] = None,
     ) -> None:
         self.client_id = client_id
         self.client_secret = client_secret
@@ -28,6 +31,9 @@ def __init__(
         self.user_endpoint = user_endpoint
         self.user_id_fn = user_id_fn
         self.group_scopes = group_scopes if group_scopes is not None else []
+        self.code_challenge = code_challenge
+        self.code_challenge_method = code_challenge_method
+        self.code_verifier = code_verifier
 
     def _name(self):
         raise Exception("Not implemented")