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import express from "express";
import hbs from "express-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', 'ja'],
supportedLngs: ['en', '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 = hbs.create({
defaultLayout: "main",
partialsDir: ["views/partials/"],
layoutsDir: "views/layouts/",
helpers: {
plural: function (number: number, text: string) {
var singular = number === 1;
// If no text parameter was given, just return a conditional s.
if (typeof text !== "string") return singular ? "" : "s";
// Split with regex into group1/group2 or group1(group3)
var match = text.match(/^([^()\/]+)(?:\/(.+))?(?:\((\w+)\))?/);
// If no match, just append a conditional s.
if (!match) return text + (singular ? "" : "s");
// We have a good match, so fire away
return (
(singular && match[1]) || // Singular case
match[2] || // Plural case: 'bagel/bagels' --> bagels
match[1] + (match[3] || "s")
); // Plural case: 'bagel(s)' or 'bagel' --> bagels
},
json: function (context: any) {
return JSON.stringify(context);
},
// i18nextヘルパーを追加
...getI18nHelpers()
},
});
// 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;
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