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/*
This file is part of GNU Taler
(C) 2021-2023 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/>
*/
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
import { StateUpdater, useCallback, useEffect, useState } from "preact/hooks";
import { ValueOrFunction } from "../utils/types.js";
import { useMemoryStorage } from "@gnu-taler/web-util/browser";
import { useMatchMutate } from "./backend.js";
const calculateRootPath = () => {
const rootPath =
typeof window !== undefined
? window.location.origin + window.location.pathname
: "/";
return rootPath;
};
export function useBackendURL(
url?: string,
): [string, boolean, StateUpdater<string>, () => void] {
const [value, setter] = useNotNullLocalStorage(
"backend-url",
url || calculateRootPath(),
);
const [triedToLog, setTriedToLog] = useLocalStorage("tried-login");
const checkedSetter = (v: ValueOrFunction<string>) => {
setTriedToLog("yes");
return setter((p) => (v instanceof Function ? v(p) : v).replace(/\/$/, ""));
};
const resetBackend = () => {
setTriedToLog(undefined);
};
return [value, !!triedToLog, checkedSetter, resetBackend];
}
export function useBackendDefaultToken(
initialValue?: string,
): [string | undefined, ((d: string | undefined) => void)] {
// uncomment for testing
initialValue = "secret-token:secret" as string | undefined
const { update: setToken, value: token, reset } = useMemoryStorage(`backend-token`, initialValue)
const clearCache = useMatchMutate()
useEffect(() => {
clearCache()
}, [token])
function updateToken(
value: (string | undefined)
): void {
if (value === undefined) {
reset()
} else {
setToken(value)
}
}
return [token, updateToken];
}
export function useBackendInstanceToken(
id: string,
): [string | undefined, ((d: string | undefined) => void)] {
const { update: setToken, value: token, reset } = useMemoryStorage(`backend-token-${id}`)
const [defaultToken, defaultSetToken] = useBackendDefaultToken();
// instance named 'default' use the default token
if (id === "default") {
return [defaultToken, defaultSetToken];
}
function updateToken(
value: (string | undefined)
): void {
if (value === undefined) {
reset()
} else {
setToken(value)
}
}
return [token, updateToken];
}
export function useLang(initial?: string): [string, StateUpdater<string>] {
const browserLang =
typeof window !== "undefined"
? navigator.language || (navigator as any).userLanguage
: undefined;
const defaultLang = (browserLang || initial || "en").substring(0, 2);
return useNotNullLocalStorage("lang-preference", defaultLang);
}
export function useLocalStorage(
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];
}
export function useNotNullLocalStorage(
key: string,
initialValue: string,
): [string, StateUpdater<string>] {
const [storedValue, setStoredValue] = useState<string>((): string => {
return typeof window !== "undefined"
? window.localStorage.getItem(key) || initialValue
: initialValue;
});
const setValue = (value: string | ((val: string) => string)) => {
const valueToStore = value instanceof Function ? value(storedValue) : value;
setStoredValue(valueToStore);
if (typeof window !== "undefined") {
if (!valueToStore) {
window.localStorage.removeItem(key);
} else {
window.localStorage.setItem(key, valueToStore);
}
}
};
return [storedValue, setValue];
}
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