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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/>
*/
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
import { useState } from "preact/hooks";
export interface Options {
slowTolerance: number;
}
export interface AsyncOperationApi<T> {
request: (...a: unknown[]) => void;
cancel: () => void;
data: T | undefined;
isSlow: boolean;
isLoading: boolean;
error: string | undefined;
}
export function useAsync<T>(
fn?: (...args: unknown[]) => Promise<T>,
{ slowTolerance: tooLong }: Options = { slowTolerance: 1000 },
): AsyncOperationApi<T> {
const [data, setData] = useState<T | undefined>(undefined);
const [isLoading, setLoading] = useState<boolean>(false);
const [error, setError] = useState<string>();
const [isSlow, setSlow] = useState(false);
const request = async (...args: unknown[]) => {
if (!fn) return;
setLoading(true);
const handler = setTimeout(() => {
setSlow(true);
}, tooLong);
try {
const result = await fn(...args);
setData(result);
} catch (error) {
setError(error instanceof Error ? error.message : String(error));
}
setLoading(false);
setSlow(false);
clearTimeout(handler);
};
function cancel(): void {
setLoading(false);
setSlow(false);
}
return {
request,
cancel,
data,
isSlow,
isLoading,
error,
};
}
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