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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 { TranslatedString } from "@gnu-taler/taler-util";
import { useNotNullLocalStorage } from "@gnu-taler/web-util/lib/index.browser";
import { ComponentChildren, createContext, h, VNode } from "preact";
import { StateUpdater, useContext } from "preact/hooks";
/**
*
* @author Sebastian Javier Marchano (sebasjm)
*/
export type Type = {
pageState: PageStateType;
pageStateSetter: StateUpdater<PageStateType>;
};
const initial: Type = {
pageState: {},
pageStateSetter: () => {
null;
},
};
const Context = createContext<Type>(initial);
export const usePageContext = (): Type => useContext(Context);
export const PageStateProvider = ({
children,
}: {
children: ComponentChildren;
}): VNode => {
const [pageState, pageStateSetter] = usePageState();
return h(Context.Provider, {
value: { pageState, pageStateSetter },
children,
});
};
/**
* Wrapper providing defaults.
*/
function usePageState(
state: PageStateType = {},
): [PageStateType, StateUpdater<PageStateType>] {
const ret = useNotNullLocalStorage("page-state", JSON.stringify(state));
const retObj: PageStateType = JSON.parse(ret[0]);
const retSetter: StateUpdater<PageStateType> = function (val) {
const newVal =
val instanceof Function
? JSON.stringify(val(retObj))
: JSON.stringify(val);
ret[1](newVal);
};
//when moving from one page to another
//clean up the info and error bar
function removeLatestInfo(val: any): ReturnType<typeof retSetter> {
const updater = typeof val === "function" ? val : (c: any) => val;
return retSetter((current: any) => {
const cleanedCurrent: PageStateType = {
...current,
info: undefined,
errors: undefined,
timestamp: new Date().getTime(),
};
return updater(cleanedCurrent);
});
}
return [retObj, removeLatestInfo];
}
export type ErrorMessage = {
description?: string;
title: TranslatedString;
debug?: string;
};
/**
* Track page state.
*/
export interface PageStateType {
currentWithdrawalOperationId?: string;
}
export interface ObservedStateType {
error: ErrorMessage | undefined;
info: TranslatedString | undefined;
}
export const errorListeners: Array<(error: ErrorMessage) => void> = [];
export const infoListeners: Array<(info: TranslatedString) => void> = [];
export function notifyError(error: ErrorMessage) {
errorListeners.forEach((cb) => cb(error));
}
export function notifyInfo(info: TranslatedString) {
infoListeners.forEach((cb) => cb(info));
}
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