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/*
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 { createContext, h, VNode } from 'preact'
import { useCallback, useContext, useState } from 'preact/hooks'
import { useBackendDefaultToken, useBackendURL } from "../hooks/index.js";
interface BackendContextType {
url: string;
token?: string;
triedToLog: boolean;
resetBackend: () => void;
clearAllTokens: () => void;
addTokenCleaner: (c: () => void) => void;
updateLoginStatus: (url: string, token?: string) => void;
}
const BackendContext = createContext<BackendContextType>({
url: '',
token: undefined,
triedToLog: false,
resetBackend: () => null,
clearAllTokens: () => null,
addTokenCleaner: () => null,
updateLoginStatus: () => null,
})
function useBackendContextState(defaultUrl?: string, initialToken?: string): BackendContextType {
const [url, triedToLog, changeBackend, resetBackend] = useBackendURL(defaultUrl);
const [token, _updateToken] = useBackendDefaultToken(initialToken);
const updateToken = (t?: string) => {
_updateToken(t)
}
const tokenCleaner = useCallback(() => { updateToken(undefined) }, [])
const [cleaners, setCleaners] = useState([tokenCleaner])
const addTokenCleaner = (c: () => void) => setCleaners(cs => [...cs, c])
const addTokenCleanerMemo = useCallback((c: () => void) => { addTokenCleaner(c) }, [tokenCleaner])
const clearAllTokens = () => {
cleaners.forEach(c => c())
for (let i = 0; i < localStorage.length; i++) {
const k = localStorage.key(i)
if (k && /^backend-token/.test(k)) localStorage.removeItem(k)
}
resetBackend()
}
const updateLoginStatus = (url: string, token?: string) => {
changeBackend(url);
if (token) updateToken(token);
};
return { url, token, triedToLog, updateLoginStatus, resetBackend, clearAllTokens, addTokenCleaner: addTokenCleanerMemo }
}
export const BackendContextProvider = ({ children, defaultUrl, initialToken }: { children: any, defaultUrl?: string, initialToken?: string }): VNode => {
const value = useBackendContextState(defaultUrl, initialToken)
return h(BackendContext.Provider, { value, children });
}
export const useBackendContext = (): BackendContextType => useContext(BackendContext);
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