From e18d2b2f8403703d21fd77b9f7bfa11b52c0d9cc Mon Sep 17 00:00:00 2001
From: Tomas Bures <bures@d3s.mff.cuni.cz>
Date: Sun, 18 Nov 2018 07:05:27 +0100
Subject: [PATCH] Added fake language option to the client to ease localization

---
 client/src/lib/i18n.js | 48 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/client/src/lib/i18n.js b/client/src/lib/i18n.js
index 3f994196..c9ee794c 100644
--- a/client/src/lib/i18n.js
+++ b/client/src/lib/i18n.js
@@ -6,6 +6,43 @@ import {getUrl} from "./urls";
 
 import commonEn from "../../../locales/common/en";
 
+function convertToFake(dict) {
+    function convertValueToFakeLang(str) {
+        let from = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*()-_=+\\|`~[{]};:'\",<.>/?";
+        let to = "ɐqɔpǝɟƃɥıɾʞʅɯuodbɹsʇnʌʍxʎz∀ԐↃᗡƎℲ⅁HIſӼ⅂WNOԀÒᴚS⊥∩ɅＭX⅄Z0123456789¡@#$%ᵥ⅋⁎()-_=+\\|,~[{]};:,„´<.>/¿";
+
+        return str.replace(/(\{\{[^\}]+\}\}|%s)/g, '\x00\x04$1\x00').split('\x00').map(c => {
+            if (c.charAt(0) === '\x04') {
+                return c;
+            }
+            let r = '';
+            for (let i = 0, len = c.length; i < len; i++) {
+                let pos = from.indexOf(c.charAt(i));
+                if (pos < 0) {
+                    r += c.charAt(i);
+                } else {
+                    r += to.charAt(pos);
+                }
+            }
+            return r;
+        }).join('\x00').replace(/[\x00\x04]/g, '');
+    }
+
+    function _convertToFake(dict) {
+        for (const key in dict) {
+            const val = dict[key];
+
+            if (typeof val === 'string') {
+                dict[key] = convertValueToFakeLang(val);
+            } else {
+                _convertToFake(val);
+            }
+        }
+    }
+
+    return _convertToFake(dict);
+}
+
 i18n
     .use(LanguageDetector)
     .init({
@@ -13,6 +50,9 @@ i18n
         resources: {
             en: {
                 common: commonEn
+            },
+            en_fake: {
+                common: convertToFake(commonEn)
             }
         },
 
@@ -27,6 +67,14 @@ i18n
             wait: true
         },
 
+        detection: {
+            order: ['querystring', 'cookie', 'localStorage', 'navigator'],
+            lookupQuerystring: 'language',
+            lookupCookie: 'i18next',
+            lookupLocalStorage: 'i18nextLng',
+            caches: ['localStorage']
+        },
+
         debug: true
     })