83 lines
2.8 KiB
TypeScript
83 lines
2.8 KiB
TypeScript
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/*
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This file is part of GNU Taler
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(C) 2021 Taler Systems S.A.
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GNU Taler is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3, or (at your option) any later version.
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GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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*/
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/**
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*
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* @author Sebastian Javier Marchano (sebasjm)
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*/
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import { createContext, h, VNode } from 'preact'
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import { useCallback, useContext, useState } from 'preact/hooks'
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import { useBackendDefaultToken, useBackendURL } from '../hooks';
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interface BackendContextType {
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url: string;
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token?: string;
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triedToLog: boolean;
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resetBackend: () => void;
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clearAllTokens: () => void;
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addTokenCleaner: (c: () => void) => void;
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updateLoginStatus: (url: string, token?: string) => void;
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}
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const BackendContext = createContext<BackendContextType>({
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url: '',
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token: undefined,
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triedToLog: false,
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resetBackend: () => null,
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clearAllTokens: () => null,
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addTokenCleaner: () => null,
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updateLoginStatus: () => null,
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})
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function useBackendContextState(defaultUrl?: string, initialToken?: string): BackendContextType {
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const [url, triedToLog, changeBackend, resetBackend] = useBackendURL(defaultUrl);
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const [token, _updateToken] = useBackendDefaultToken(initialToken);
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const updateToken = (t?: string) => {
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_updateToken(t)
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}
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const tokenCleaner = useCallback(() => { updateToken(undefined) }, [])
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const [cleaners, setCleaners] = useState([tokenCleaner])
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const addTokenCleaner = (c: () => void) => setCleaners(cs => [...cs, c])
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const addTokenCleanerMemo = useCallback((c: () => void) => { addTokenCleaner(c) }, [tokenCleaner])
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const clearAllTokens = () => {
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cleaners.forEach(c => c())
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for (let i = 0; i < localStorage.length; i++) {
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const k = localStorage.key(i)
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if (k && /^backend-token/.test(k)) localStorage.removeItem(k)
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}
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resetBackend()
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}
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const updateLoginStatus = (url: string, token?: string) => {
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changeBackend(url);
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if (token) updateToken(token);
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};
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return { url, token, triedToLog, updateLoginStatus, resetBackend, clearAllTokens, addTokenCleaner: addTokenCleanerMemo }
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}
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export const BackendContextProvider = ({ children, defaultUrl, initialToken }: { children: any, defaultUrl?: string, initialToken?: string }): VNode => {
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const value = useBackendContextState(defaultUrl, initialToken)
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return h(BackendContext.Provider, { value, children });
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}
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export const useBackendContext = (): BackendContextType => useContext(BackendContext);
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