fix: make login_for optional

frontend/src/lib/hooks/login-for.ts

@@ -1,10 +1,11 @@
 type UseLoginForProps = {
   login_for?: "oidc" | "app";
-  compiledParams: string;
+  params: URLSearchParams;
 };
 
 export const useLoginFor = (props: UseLoginForProps): string => {
-  const { login_for, compiledParams } = props;
+  const { login_for, params } = props;
+  const compiledParams = params.toString() ? "?" + params.toString() : "";
 
   switch (login_for) {
     case "oidc":
@@ -12,6 +13,9 @@ export const useLoginFor = (props: UseLoginForProps): string => {
     case "app":
       return "/continue" + compiledParams;
     default:
+      if (params.get("redirect_uri")) {
+        return "/continue" + compiledParams
+      }
       return "/logout";
   }
 };

frontend/src/lib/hooks/screen-params.ts

@@ -27,16 +27,10 @@ export function useScreenParams(params: URLSearchParams): ScreenParams {
   return parsed.data;
 }
 
-export function recompileScreenParams(params: ScreenParams): string {
-  const p = new URLSearchParams(
+export function searchParamsFromObject(obj: Object): URLSearchParams {
+  return new URLSearchParams(
     Object.fromEntries(
-      Object.entries(params).filter(([, v]) => v !== undefined),
+      Object.entries(obj).filter(([, v]) => v !== undefined),
     ) as Record<string, string>,
-  ).toString();
-
-  if (p.length > 0) {
-    return "?" + p;
-  }
-
-  return "";
+  );
 }