feat: custom exceptions instead of direct fastapi.httpexceptions

Resolves #2

src/auth/service.py

@@ -13,9 +13,10 @@ from joserfc.errors import ExpiredTokenError
 from joserfc.jwk import KeySet
 from urllib.request import urlopen
 
-from fastapi import Depends, HTTPException
+from fastapi import Depends
 from fastapi.security import OpenIdConnect
 
+from src.auth.exceptions import UnauthorizedException
 from src.auth.config import auth_settings
 from src.user.service import add_user_to_db
 
@@ -50,8 +51,7 @@ async def get_current_user(oidc_auth_string: oidc_dependency) -> dict[str, Any]:
 	try:
 		claims_requests.validate(token.claims)
 	except ExpiredTokenError:
-		raise HTTPException(status_code=401, detail="Token expired")
-
+		raise UnauthorizedException(message="Token is expired")
 	db_id = await add_user_to_db(token.claims)
 
 	token.claims["db_id"] = db_id