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Diffstat (limited to 'packages/merchant-backend-ui/src/hooks/index.ts')
-rw-r--r-- | packages/merchant-backend-ui/src/hooks/index.ts | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/packages/merchant-backend-ui/src/hooks/index.ts b/packages/merchant-backend-ui/src/hooks/index.ts new file mode 100644 index 000000000..19d672ad3 --- /dev/null +++ b/packages/merchant-backend-ui/src/hooks/index.ts @@ -0,0 +1,110 @@ +/* + 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 { StateUpdater, useCallback, useState } from "preact/hooks"; +import { ValueOrFunction } from '../utils/types'; + + +const calculateRootPath = () => { + const rootPath = typeof window !== undefined ? window.location.origin + window.location.pathname : '/' + return rootPath +} + +export function useBackendURL(url?: string): [string, boolean, StateUpdater<string>, () => void] { + const [value, setter] = useNotNullLocalStorage('backend-url', url || calculateRootPath()) + const [triedToLog, setTriedToLog] = useLocalStorage('tried-login') + + const checkedSetter = (v: ValueOrFunction<string>) => { + setTriedToLog('yes') + return setter(p => (v instanceof Function ? v(p) : v).replace(/\/$/, '')) + } + + const resetBackend = () => { + setTriedToLog(undefined) + } + return [value, !!triedToLog, checkedSetter, resetBackend] +} + +export function useBackendDefaultToken(): [string | undefined, StateUpdater<string | undefined>] { + return useLocalStorage('backend-token') +} + +export function useBackendInstanceToken(id: string): [string | undefined, StateUpdater<string | undefined>] { + const [token, setToken] = useLocalStorage(`backend-token-${id}`) + const [defaultToken, defaultSetToken] = useBackendDefaultToken() + + // instance named 'default' use the default token + if (id === 'default') { + return [defaultToken, defaultSetToken] + } + + return [token, setToken] +} + +export function useLang(initial?: string): [string, StateUpdater<string>] { + const browserLang = typeof window !== "undefined" ? navigator.language || (navigator as any).userLanguage : undefined; + const defaultLang = (browserLang || initial || 'en').substring(0, 2) + return useNotNullLocalStorage('lang-preference', defaultLang) +} + +export function useLocalStorage(key: string, initialValue?: string): [string | undefined, StateUpdater<string | undefined>] { + const [storedValue, setStoredValue] = useState<string | undefined>((): string | undefined => { + return typeof window !== "undefined" ? window.localStorage.getItem(key) || initialValue : initialValue; + }); + + const setValue = (value?: string | ((val?: string) => string | undefined)) => { + setStoredValue(p => { + const toStore = value instanceof Function ? value(p) : value + if (typeof window !== "undefined") { + if (!toStore) { + window.localStorage.removeItem(key) + } else { + window.localStorage.setItem(key, toStore); + } + } + return toStore + }) + }; + + return [storedValue, setValue]; +} + +export function useNotNullLocalStorage(key: string, initialValue: string): [string, StateUpdater<string>] { + const [storedValue, setStoredValue] = useState<string>((): string => { + return typeof window !== "undefined" ? window.localStorage.getItem(key) || initialValue : initialValue; + }); + + const setValue = (value: string | ((val: string) => string)) => { + const valueToStore = value instanceof Function ? value(storedValue) : value; + setStoredValue(valueToStore); + if (typeof window !== "undefined") { + if (!valueToStore) { + window.localStorage.removeItem(key) + } else { + window.localStorage.setItem(key, valueToStore); + } + } + }; + + return [storedValue, setValue]; +} + + |