34 lines
959 B
TypeScript
34 lines
959 B
TypeScript
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import { hooks } from "@gnu-taler/web-util/lib/index.browser";
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import { StateUpdater } from "preact/hooks";
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/**
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* Has the information to reach and
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* authenticate at the bank's backend.
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*/
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export interface BackendStateType {
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url?: string;
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username?: string;
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password?: string;
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}
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/**
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* Return getters and setters for
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* login credentials and backend's
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* base URL.
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*/
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type BackendStateTypeOpt = BackendStateType | undefined;
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export function useBackendState(
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state?: BackendStateType,
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): [BackendStateTypeOpt, StateUpdater<BackendStateTypeOpt>] {
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const ret = hooks.useLocalStorage("backend-state", JSON.stringify(state));
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const retObj: BackendStateTypeOpt = ret[0] ? JSON.parse(ret[0]) : ret[0];
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const retSetter: StateUpdater<BackendStateTypeOpt> = function (val) {
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const newVal =
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val instanceof Function
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? JSON.stringify(val(retObj))
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: JSON.stringify(val);
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ret[1](newVal);
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};
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return [retObj, retSetter];
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}
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