Add 'apps/mobile/' from commit '5fa30f365f21531094cd4d2045042bb4f1370ac3'

git-subtree-dir: apps/mobile
git-subtree-mainline: 86f8987dff
git-subtree-split: 5fa30f365f

apps/mobile/lib/auth-oauth.ts

@@ -0,0 +1,15 @@
+import type { createAuthClient } from "better-auth/react";
+
+type AuthClient = ReturnType<typeof createAuthClient>;
+
+type OAuth2SignIn = (input: {
+  providerId: string;
+  callbackURL: string;
+}) => Promise<{ error?: { message?: string } | null }>;
+
+export async function signInWithAuthentik(authClient: AuthClient, callbackURL: string) {
+  return (authClient.signIn as unknown as { oauth2: OAuth2SignIn }).oauth2({
+    providerId: "authentik",
+    callbackURL,
+  });
+}