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/*
This file is part of TALER
(C) 2016 GNUnet e.V.
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.
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
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { NotificationType, TalerErrorDetails } from "@gnu-taler/taler-util";
import { useEffect, useState } from "preact/hooks";
import * as wxApi from "../wxApi";
import { OperationFailedError } from "@gnu-taler/taler-wallet-core";
interface HookOk<T> {
hasError: false;
response: T;
}
export type HookError = HookGenericError | HookOperationalError
export interface HookGenericError {
hasError: true;
operational: false,
message: string;
}
export interface HookOperationalError {
hasError: true;
operational: true,
details: TalerErrorDetails;
}
export type HookResponse<T> = HookOk<T> | HookError | undefined;
//"withdraw-group-finished"
export function useAsyncAsHook<T>(
fn: () => Promise<T>,
updateOnNotification?: Array<NotificationType>,
): HookResponse<T> {
const [result, setHookResponse] = useState<HookResponse<T>>(undefined);
useEffect(() => {
async function doAsync() {
try {
const response = await fn();
setHookResponse({ hasError: false, response });
} catch (e) {
if (e instanceof OperationFailedError) {
setHookResponse({ hasError: true, operational: true, details: e.operationError });
} else if (e instanceof Error) {
setHookResponse({ hasError: true, operational: false, message: e.message });
}
}
}
doAsync();
if (updateOnNotification && updateOnNotification.length > 0) {
return wxApi.onUpdateNotification(updateOnNotification, () => {
doAsync();
});
}
}, []);
return result;
}
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