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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 { TalerErrorDetail, TalerError } from "@gnu-taler/taler-util";
import { useEffect, useMemo, useState } from "preact/hooks";
import { BackgroundError } from "../wxApi.js";
export interface HookOk<T> {
hasError: false;
response: T;
}
export type HookError = HookGenericError | HookOperationalError;
export interface HookGenericError {
hasError: true;
type: "error";
message: string;
}
export interface HookOperationalError {
hasError: true;
type: "taler";
message: string;
details: TalerErrorDetail;
}
interface WithRetry {
retry: () => void;
}
export type HookResponse<T> = HookOk<T> | HookError | undefined;
export type HookResponseWithRetry<T> =
| ((HookOk<T> | HookError) & WithRetry)
| undefined;
export function useAsyncAsHook<T>(
fn: () => Promise<T | false>,
deps?: unknown[],
): HookResponseWithRetry<T> {
const [result, setHookResponse] = useState<HookResponse<T>>(undefined);
const args = useMemo(
() => ({
fn,
}),
deps || [],
);
async function doAsync(): Promise<void> {
try {
const response = await args.fn();
if (response === false) return;
setHookResponse({ hasError: false, response });
} catch (e) {
if (e instanceof TalerError) {
setHookResponse({
hasError: true,
type: "taler",
message: e.message,
details: e.errorDetail,
});
} else if (e instanceof BackgroundError) {
setHookResponse({
hasError: true,
type: "taler",
message: e.message,
details: e.errorDetail,
});
} else if (e instanceof Error) {
setHookResponse({
hasError: true,
type: "error",
message: e.message,
});
}
}
}
useEffect(() => {
doAsync();
}, [args]);
if (!result) return undefined;
return { ...result, retry: doAsync };
}
|
