import express from "express"; import hbs, { ExpressHandlebars } from "express-handlebars"; import Handlebars from 'handlebars'; import cookieParser from "cookie-parser"; import i18next from "i18next"; import Backend from "i18next-fs-backend"; import { LanguageDetector, handle } from 'i18next-http-middleware'; import { createRequire } from 'module'; import { fileURLToPath } from 'url'; import { dirname } from 'path'; import path from 'path'; const require = createRequire(import.meta.url); const handlebarsI18next = require('handlebars-i18next'); // ESモジュールで__dirnameを再現 const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); import routes from "./routes.js"; import frontend from "./routes/frontend.js"; import activitypub from "./routes/activitypub.js"; import event from "./routes/event.js"; import group from "./routes/group.js"; import staticPages from "./routes/static.js"; import magicLink from "./routes/magicLink.js"; import { initEmailService } from "./lib/email.js"; import { getI18nHelpers } from "./helpers.js"; import { activityPubContentType, alternateActivityPubContentType, } from "./lib/activitypub.js"; const app = express(); app.locals.sendEmails = initEmailService(); // ESモジュールで__dirnameを再現する部分を関数化 const getLocalesPath = () => { const __filename = fileURLToPath(import.meta.url); const __dirname = dirname(__filename); return path.join(__dirname, '..', 'locales'); }; async function initializeApp() { // Cookies // app.use(cookieParser()); // i18next configuration await i18next .use(Backend) .use(LanguageDetector) .init({ backend: { loadPath: path.join(getLocalesPath(), '{{lng}}.json'), }, fallbackLng: 'en', preload: ['en-US', 'ja'], supportedLngs: ['en','en-US', 'ja'], nonExplicitSupportedLngs: true, load: 'languageOnly', debug: true, detection: { order: ['header', 'cookie'], lookupHeader: 'accept-language', lookupCookie: 'i18next', caches: ['cookie'] }, interpolation: { escapeValue: false } }); app.use(handle(i18next)); // 言語を明示的に切り替える app.use((req, res, next) => { const currentLanguage = i18next.language; i18next.changeLanguage(req.language); const newLanguage = i18next.language; console.log('Language Change:', { header: req.headers['accept-language'], detected: req.language, currentLanguage: currentLanguage, newLanguage: newLanguage }); next(); }); // デバッグ用 app.use((req, res, next) => { console.log('Language Detection:', { header: req.headers['accept-language'], detected: req.language, i18next: i18next.language }); next(); }); // View engine // const hbsInstance: ExpressHandlebars = hbs.create({ defaultLayout: "main", partialsDir: ["views/partials/"], layoutsDir: "views/layouts/", helpers: { json: function (context: any) { return JSON.stringify(context); }, // i18nextヘルパーを追加 ...getI18nHelpers(), plural: function (key: string, count: number, options: any) { // ★plural ヘルパーを登録 const translation = i18next.t(key, { count: count }); return translation; } }, }); // i18nextHelperの呼び出し方法を変更 if (typeof handlebarsI18next === 'function') { handlebarsI18next(hbsInstance.handlebars, i18next); } else if (typeof handlebarsI18next.default === 'function') { handlebarsI18next.default(hbsInstance.handlebars, i18next); } else { console.error('handlebars-i18next helper is not properly loaded'); } app.engine("handlebars", hbsInstance.engine); app.set("view engine", "handlebars"); app.set("hbsInstance", hbsInstance); // Static files // app.use(express.static("public")); // Body parser // app.use(express.json({ type: alternateActivityPubContentType })); app.use(express.json({ type: activityPubContentType })); app.use(express.json({ type: "application/json" })); app.use(express.urlencoded({ extended: true })); // Router // app.use("/", staticPages); app.use("/", frontend); app.use("/", activitypub); app.use("/", event); app.use("/", group); app.use("/", magicLink); app.use("/", routes); } initializeApp().catch(console.error); export default app;