Disable GitHub OAuth on blocks if not configured

autogpt_platform/backend/backend/blocks/github/_auth.py

@@ -7,10 +7,17 @@
 from pydantic import SecretStr
 
 from backend.data.model import CredentialsField, CredentialsMetaInput
+from backend.util.settings import Secrets
+
+secrets = Secrets()
+GITHUB_OAUTH_IS_CONFIGURED = bool(
+    secrets.github_client_id and secrets.github_client_secret
+)
 
 GithubCredentials = APIKeyCredentials | OAuth2Credentials
 GithubCredentialsInput = CredentialsMetaInput[
-    Literal["github"], Literal["api_key", "oauth2"]
+    Literal["github"],
+    Literal["api_key", "oauth2"] if GITHUB_OAUTH_IS_CONFIGURED else Literal["api_key"],
 ]
 
 
@@ -23,7 +30,9 @@ def GithubCredentialsField(scope: str) -> GithubCredentialsInput:
     """  # noqa
     return CredentialsField(
         provider="github",
-        supported_credential_types={"api_key", "oauth2"},
+        supported_credential_types=(
+            {"api_key", "oauth2"} if GITHUB_OAUTH_IS_CONFIGURED else {"api_key"}
+        ),
         required_scopes={scope},
         description="The GitHub integration can be used with OAuth, "
         "or any API key with sufficient permissions for the blocks it is used on.",