Use separate _fetch_token method

flask_discord/_http.py

@@ -8,7 +8,7 @@ import abc
 from . import configs
 from . import exceptions
 
-from flask import session
+from flask import session, request
 from collections.abc import Mapping
 from requests_oauthlib import OAuth2Session
 
@@ -58,6 +58,14 @@ class DiscordOAuth2HttpClient(abc.ABC):
     def _token_updater(token):
         session["DISCORD_OAUTH2_TOKEN"] = token
 
+    def _fetch_token(self):
+        discord = self._make_session(state=session.get("DISCORD_OAUTH2_STATE"))
+        return discord.fetch_token(
+            configs.DISCORD_TOKEN_URL,
+            client_secret=self.__client_secret,
+            authorization_response=request.url
+        )
+
     def _make_session(self, token: str = None, state: str = None, scope: list = None) -> OAuth2Session:
         """A low level method used for creating OAuth2 session.
 

flask_discord/client.py

@@ -91,12 +91,7 @@ class DiscordOAuth2Session(_http.DiscordOAuth2HttpClient):
         """
         if request.values.get("error"):
             return request.values["error"]
-        discord = self._make_session(state=session.get("DISCORD_OAUTH2_STATE"))
-        token = discord.fetch_token(
-            configs.DISCORD_TOKEN_URL,
-            client_secret=self.__client_secret,
-            authorization_response=request.url
-        )
+        token = self._fetch_token()
         self._token_updater(token)
 
     def revoke(self):