From 9c8debb5ed1a39c26d2cc7d897b5720ebd4fadf5 Mon Sep 17 00:00:00 2001
From: Laura Hausmann <laura@hausmann.dev>
Date: Fri, 12 Jul 2024 17:48:54 +0200
Subject: [PATCH] [backend/masto-client] Improve error message when requesting
 an oauth token with a grant_type other than authorization_code

---
 Iceshrimp.Backend/Controllers/Mastodon/AuthController.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Iceshrimp.Backend/Controllers/Mastodon/AuthController.cs b/Iceshrimp.Backend/Controllers/Mastodon/AuthController.cs
index a43b8164..4b2d6d9c 100644
--- a/Iceshrimp.Backend/Controllers/Mastodon/AuthController.cs
+++ b/Iceshrimp.Backend/Controllers/Mastodon/AuthController.cs
@@ -89,7 +89,7 @@ public class AuthController(DatabaseContext db, MetaService meta) : ControllerBa
 	{
 		//TODO: app-level access (grant_type = "client_credentials")
 		if (request.GrantType != "authorization_code")
-			throw GracefulException.BadRequest("Invalid grant_type");
+			throw GracefulException.BadRequest($"Invalid grant_type, only authorization_code is supported.");
 		var token = await db.OauthTokens.FirstOrDefaultAsync(p => p.Code == request.Code &&
 		                                                          p.App.ClientId == request.ClientId &&
 		                                                          p.App.ClientSecret == request.ClientSecret);