89 lines
3.0 KiB
TypeScript
89 lines
3.0 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import * as fs from 'node:fs';
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import {hasLocaleFile} from '@fluxer/i18n/src/io/LocaleFilePath';
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import {parseYamlRecord} from '@fluxer/i18n/src/io/ParseYamlRecord';
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import {buildTemplates} from '@fluxer/i18n/src/runtime/BuildTemplates';
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import {getTemplate} from '@fluxer/i18n/src/runtime/GetTemplate';
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import type {I18nConfig, I18nResult, I18nState, TemplateCompiler} from '@fluxer/i18n/src/runtime/I18nTypes';
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interface I18nModule<TKey extends string, TValue, TVariables> {
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getTemplate(key: TKey, locale: string | null, variables: TVariables): I18nResult<TKey, TValue>;
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hasLocale(locale: string): boolean;
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getLoadedLocales(): Set<string>;
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reset(): void;
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getState(): I18nState<TKey, TValue, TVariables>;
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}
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export function createI18n<TKey extends string, TValue, TVariables>(
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config: I18nConfig<TKey, TValue, TVariables>,
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compile: TemplateCompiler<TValue, TVariables>,
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): I18nModule<TKey, TValue, TVariables> {
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const onWarning = config.onWarning ?? console.warn;
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const state: I18nState<TKey, TValue, TVariables> = {
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loadedLocales: new Set(),
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templatesByLocale: new Map(),
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messageFormatCache: new Map(),
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config: {...config, onWarning},
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};
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loadDefaultLocale();
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function loadDefaultLocale(): void {
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if (!fs.existsSync(state.config.defaultMessagesFile)) {
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onWarning(`Default messages bundle not found: ${state.config.defaultMessagesFile}`);
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return;
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}
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const raw = fs.readFileSync(state.config.defaultMessagesFile, 'utf8');
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const parsed = parseYamlRecord(raw);
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const templates = buildTemplates(parsed, state.config, state.config.defaultMessagesFile);
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state.templatesByLocale.set(state.config.defaultLocale, templates);
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state.loadedLocales.add(state.config.defaultLocale);
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}
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return {
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getTemplate(key: TKey, locale: string | null, variables: TVariables): I18nResult<TKey, TValue> {
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return getTemplate(state, key, locale, variables, compile);
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},
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hasLocale(locale: string): boolean {
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return hasLocaleFile(locale, state.config.localesPath, state.config.defaultLocale);
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},
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getLoadedLocales(): Set<string> {
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return new Set(state.loadedLocales);
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},
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reset(): void {
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state.loadedLocales.clear();
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state.templatesByLocale.clear();
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state.messageFormatCache.clear();
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loadDefaultLocale();
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},
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getState(): I18nState<TKey, TValue, TVariables> {
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return state;
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},
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};
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}
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