95 lines
2.7 KiB
TypeScript
95 lines
2.7 KiB
TypeScript
// Copyright: Ankitects Pty Ltd and contributors
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// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
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import pb from "./fluent_proto";
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import "intl-pluralrules";
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import { FluentBundle, FluentResource, FluentNumber } from "@fluent/bundle/compat";
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type RecordVal = number | string | FluentNumber;
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function formatNumbers(args?: Record<string, RecordVal>): void {
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if (!args) {
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return;
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}
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for (const key of Object.keys(args)) {
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if (typeof args[key] === "number") {
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args[key] = new FluentNumber(args[key] as number, {
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maximumFractionDigits: 2,
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});
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}
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}
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}
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export class I18n {
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bundles: FluentBundle[] = [];
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langs: string[] = [];
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TR = pb.FluentProto.FluentString;
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tr(id: pb.FluentProto.FluentString, args?: Record<string, RecordVal>): string {
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formatNumbers(args);
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const key = this.keyName(id);
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for (const bundle of this.bundles) {
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const msg = bundle.getMessage(key);
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if (msg && msg.value) {
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return bundle.formatPattern(msg.value, args);
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}
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}
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return `missing key: ${key}`;
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}
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supportsVerticalText(): boolean {
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const firstLang = this.bundles[0].locales[0];
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return (
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firstLang.startsWith("ja") ||
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firstLang.startsWith("zh") ||
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firstLang.startsWith("ko")
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);
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}
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direction(): string {
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const firstLang = this.bundles[0].locales[0];
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if (
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firstLang.startsWith("ar") ||
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firstLang.startsWith("he") ||
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firstLang.startsWith("fa")
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) {
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return "rtl";
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} else {
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return "ltr";
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}
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}
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weekdayLabel(n: number): string {
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const firstLang = this.bundles[0].locales[0];
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return new Date(86_400_000 * (3 + n)).toLocaleDateString(firstLang, {
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weekday: "narrow",
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});
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}
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private keyName(msg: pb.FluentProto.FluentString): string {
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return this.TR[msg].toLowerCase().replace(/_/g, "-");
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}
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}
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export async function setupI18n(): Promise<I18n> {
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const i18n = new I18n();
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const resp = await fetch("/_anki/i18nResources", { method: "POST" });
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if (!resp.ok) {
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throw Error(`unexpected reply: ${resp.statusText}`);
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}
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const json = await resp.json();
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for (const i in json.resources) {
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const text = json.resources[i];
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const lang = json.langs[i];
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const bundle = new FluentBundle([lang, "en-US"]);
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const resource = new FluentResource(text);
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bundle.addResource(resource);
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i18n.bundles.push(bundle);
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}
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i18n.langs = json.langs;
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return i18n;
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}
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