feat: automatic termination of older sessions on login (temporary until release 4);

fix: login controller method not returning tokens

backend/internal/services/auth.go

@@ -303,6 +303,15 @@ func (a *authServiceImpl) Login(request models.LoginRequest) (*models.LoginRespo
 		return nil, returnedError
 	}
 
+	// Until release 4, only 1 session at a time is supported
+	if err = db.TXQueries.TerminateAllSessionsForUserByUsername(db.CTX, request.Username); err != nil {
+		a.log.Error(
+			"Failed to terminate older sessions for user trying to log in",
+			zap.String("username", request.Username),
+			zap.Error(err))
+		return nil, errs.ErrServerError
+	}
+
 	session, err = db.TXQueries.CreateSession(db.CTX, database.CreateSessionParams{
 		// TODO: use actual values for session metadata
 		UserID: userRow.ID,