feat(app): add i18n support

Author: kbrownlees-csl

docker-compose.yml

@@ -16,6 +16,7 @@ services:
       DATA_DIR: '/data/tmp'
       NODE_ENV: 'production'
       REDIS_HOST: 'redis'
+      LOCALE: 'cn'
     ports:
       - '3000:3000'
     depends_on:

docs/install-server.md

@@ -47,6 +47,7 @@ some config items have to be changed:
 
 -   `local`.`storageDir` change to your directory, make sure have read/write permissions.
 -   `local`.`downloadUrl` replace `127.0.0.1` to your machine ip.
+-   `local`.`locale` either `cn` or `en`.
 -   `common`.`dataDir` change to your directory,make sure have read/write permissions.
 -   `jwt`.`tokenSecret` get the random string from `https://www.grc.com/passwords.htm`, and replace the value `INSERT_RANDOM_TOKEN_KEY`.
 -   `db` config: `username`,`password`,`host`,`port` change to your own

src/app.ts

@@ -7,6 +7,7 @@ import helmet from 'helmet';
 import { logger } from 'kv-logger';
 import { AppError, NotFound } from './core/app-error';
 import { config } from './core/config';
+import { i18n } from "./core/i81n"
 import { Req, Res, withLogger } from './core/middleware';
 import { accessKeysRouter } from './routes/accessKeys';
 import { accountRouter } from './routes/account';
@@ -23,10 +24,27 @@ app.use(
         contentSecurityPolicy: false,
     }),
 );
+
+
+
 // view engine setup
 app.set('views', path.join(__dirname, '../views'));
 app.set('view engine', 'pug');
 
+// translations
+
+app.use(i18n.init)
+
+app.use(function(req, res, next) {
+    // express helper for natively supported engines
+    // @ts-ignore
+    res.locals.__ = res.__ = function() {
+        return i18n.__.apply(req, arguments);
+    };
+
+    next();
+});
+
 app.use(bodyParser.json());
 app.use(bodyParser.urlencoded({ extended: false }));
 app.use(cookieParser());

src/core/config.ts

@@ -85,6 +85,7 @@ export const config = {
             'http://127.0.0.1:3000/download',
         // public static download spacename.
         public: '/download',
+        locale: process.env.LOCALE || 'cn'
     },
     jwt: {
         // Recommended: 63 random alpha-numeric characters

src/core/i81n.ts

@@ -0,0 +1,11 @@
+import { I18n } from 'i18n'
+import path from "path"
+import { config } from "./config"
+
+export const i18n = new I18n({
+    locales: ['cn', 'en'],
+    directory: path.join(__dirname, '../../locales'),
+    defaultLocale: 'cn'
+})
+
+i18n.setLocale(config.local.locale)