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Diffstat (limited to 'packages/merchant-backoffice-ui/src/hooks/async.ts')
-rw-r--r-- | packages/merchant-backoffice-ui/src/hooks/async.ts | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/packages/merchant-backoffice-ui/src/hooks/async.ts b/packages/merchant-backoffice-ui/src/hooks/async.ts new file mode 100644 index 000000000..fd550043b --- /dev/null +++ b/packages/merchant-backoffice-ui/src/hooks/async.ts @@ -0,0 +1,76 @@ +/* + This file is part of GNU Taler + (C) 2021 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"; +import { cancelPendingRequest } from "./backend"; + +export interface Options { + slowTolerance: number, +} + +export interface AsyncOperationApi<T> { + request: (...a: any) => void, + cancel: () => void, + data: T | undefined, + isSlow: boolean, + isLoading: boolean, + error: string | undefined +} + +export function useAsync<T>(fn?: (...args: any) => 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<any>(undefined); + const [isSlow, setSlow] = useState(false) + + const request = async (...args: any) => { + if (!fn) return; + setLoading(true); + + const handler = setTimeout(() => { + setSlow(true) + }, tooLong) + + try { + const result = await fn(...args); + setData(result); + } catch (error) { + setError(error); + } + setLoading(false); + setSlow(false) + clearTimeout(handler) + }; + + function cancel() { + cancelPendingRequest() + setLoading(false); + setSlow(false) + } + + return { + request, + cancel, + data, + isSlow, + isLoading, + error + }; +} |