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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 { i18n, setupI18n } from "@gnu-taler/taler-util";
import { ComponentChildren, createContext, h, VNode } from "preact";
import { useContext, useEffect } from "preact/hooks";
import { useLang } from "../hooks/index.js";
export type InternationalizationAPI = typeof i18n;
interface Type {
lang: string;
supportedLang: { [id in keyof typeof supportedLang]: string };
changeLanguage: (l: string) => void;
i18n: InternationalizationAPI;
}
const supportedLang = {
es: "Espanol [es]",
en: "English [en]",
fr: "Francais [fr]",
de: "Deutsch [de]",
sv: "Svenska [sv]",
it: "Italiane [it]",
navigator: "Defined by navigator",
};
const initial = {
lang: "en",
supportedLang,
changeLanguage: () => {
// do not change anything
},
i18n,
};
const Context = createContext<Type>(initial);
interface Props {
initial?: string;
children: ComponentChildren;
forceLang?: string;
source: Record<string, any>;
}
// Outmost UI wrapper.
export const TranslationProvider = ({
initial,
children,
forceLang,
source,
}: Props): VNode => {
const { value: lang, update: changeLanguage } = useLang(initial);
useEffect(() => {
if (forceLang) {
changeLanguage(forceLang);
}
});
useEffect(() => {
setupI18n(lang, source);
}, [lang]);
if (forceLang) {
setupI18n(forceLang, source);
} else {
setupI18n(lang, source);
}
return h(Context.Provider, {
value: { lang, changeLanguage, supportedLang, i18n },
children,
});
};
export const useTranslationContext = (): Type => useContext(Context);
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