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/*
This file is part of GNU Taler
(C) 2022 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { useLocalStorage } from "@gnu-taler/web-util/browser";
import { Settings, defaultSettings } from "../platform/api.js";
function parse_json_or_undefined<T>(str: string | undefined): T | undefined {
if (str === undefined) return undefined;
try {
return JSON.parse(str);
} catch {
return undefined;
}
}
export function useSettings(): [
Readonly<Settings>,
<T extends keyof Settings>(key: T, value: Settings[T]) => void,
] {
const { value, update } = useLocalStorage("wallet-settings");
const parsed: Settings = parse_json_or_undefined(value) ?? defaultSettings;
function updateField<T extends keyof Settings>(k: T, v: Settings[T]) {
const newValue = { ...parsed, [k]: v };
const json = JSON.stringify(newValue);
update(json);
}
return [parsed, updateField];
}
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