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/*
This file is part of GNU Taler
(C) 2021-2024 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 {StateUpdater, useState} from "preact/hooks";
import { ValueOrFunction } from "../utils/types.js";
export function useBackendURL(
url?: string,
): [string, StateUpdater<string>] {
const [value, setter] = useSimpleLocalStorage(
"auditor-base-url",
url || calculateRootPath(),
);
const checkedSetter = (v: ValueOrFunction<string>) => {
return setter((p) => (v instanceof Function ? v(p ?? "") : v).replace(/\/$/, ""));
};
return [value!, checkedSetter];
}
const calculateRootPath = () => {
const rootPath =
typeof window !== undefined
? window.location.origin + window.location.pathname
: "/";
/**
* By default, auditor backend serves the html content
* from the /webui root. This should cover most of the
* cases and the rootPath will be the auditor backend
* URL where the instances are
*/
return rootPath.replace("/webui/", "");
};
export function useSimpleLocalStorage(
key: string,
initialValue?: string,
): [string | undefined, StateUpdater<string | undefined>] {
const [storedValue, setStoredValue] = useState<string | undefined>(
(): string | undefined => {
return typeof window !== "undefined"
? window.localStorage.getItem(key) || initialValue
: initialValue;
},
);
const setValue = (
value?: string | ((val?: string) => string | undefined),
) => {
setStoredValue((p) => {
const toStore = value instanceof Function ? value(p) : value;
if (typeof window !== "undefined") {
if (!toStore) {
window.localStorage.removeItem(key);
} else {
window.localStorage.setItem(key, toStore);
}
}
return toStore;
});
};
return [storedValue, setValue];
}
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