move langage-code-to-country-code mapping into ssr filename

i18n/README.md

@@ -6,6 +6,8 @@ Translation files can be created out of the templates [template.pot](https://git
 
 All translated languages get an own chat channel that just people who use this language can access.
 
+If a language code differs from the country code of a wanted flag, it can be defined in the ssr filename, like `ssr-en-gb.po` would be the english language, with the flag of Great Britain.
+
 ## With poedit
 
 ### Create new translation

i18n/template-ssr.pot

@@ -98,19 +98,19 @@ msgstr ""
 msgid "Loading..."
 msgstr ""
 
-#: src/ssr/PopUp.jsx:62
+#: src/ssr/PopUp.jsx:55
 msgid "ppfun"
 msgstr ""
 
-#: src/ssr/PopUp.jsx:63
+#: src/ssr/PopUp.jsx:56
 msgid "PixelPlanet.Fun PopUp"
 msgstr ""
 
-#: src/ssr/Main.jsx:71
+#: src/ssr/Main.jsx:64
 msgid "PixelPlanet.Fun"
 msgstr ""
 
-#: src/ssr/Main.jsx:72
+#: src/ssr/Main.jsx:65
 msgid "Place color pixels on an map styled canvas with other players online"
 msgstr ""
 

src/core/ttag.js

@@ -4,7 +4,6 @@
 import { TTag } from 'ttag';
 import cookie from 'cookie';
 
-import { languageFromLocalisation } from '../utils/location';
 import { getLangsOfJsAsset } from './assets';
 
 // eslint-disable-next-line max-len
@@ -12,23 +11,37 @@ const localeImports = require.context('../../i18n', false, /^\.[/\\]ssr-.+\.po$/
 
 const ttags = {};
 
+export const availableLangs = [];
+
 (() => {
   const langs = localeImports.keys();
   const jsLangs = getLangsOfJsAsset('client');
 
   if (jsLangs.includes('en')) {
     ttags.en = new TTag();
+    availableLangs.push(['en', 'gb']);
   }
 
   for (let i = 0; i < langs.length; i += 1) {
     const file = langs[i];
     // ./ssr-de.po
-    const lang = file.replace('./ssr-', '').replace('.po', '').toLowerCase();
+    let lang = file.replace('./ssr-', '').replace('.po', '').toLowerCase();
+    let flag = lang;
+    /*
+     * in cases where the language code and country code differ,
+     * the country code can be given seperately in the file name
+     * i.e.: ./ssr-en-gb.po
+     */
+    const seperator = lang.indexOf('-');
+    if (seperator !== -1) {
+      [lang, flag] = lang.split('-');
+    }
     if (jsLangs.includes(lang)) {
       const ttag = new TTag();
       ttag.addLocale(lang, localeImports(file).default);
       ttag.useLocale(lang);
       ttags[lang] = ttag;
+      availableLangs.push([lang, flag]);
     }
   }
 })();
@@ -37,6 +50,31 @@ export function getTTag(lang) {
   return ttags[lang] || ttags.en || Object.values(ttags)[0];
 }
 
+/*
+ * gets preferred language out of localisation string
+ * @param location string (like from accept-language header)
+ * @return language code
+ */
+function languageFromLocalisation(localisation) {
+  if (!localisation) {
+    return 'en';
+  }
+  let lang = localisation;
+  let i = lang.indexOf('-');
+  if (i !== -1) {
+    lang = lang.slice(0, i);
+  }
+  i = lang.indexOf(',');
+  if (i !== -1) {
+    lang = lang.slice(0, i);
+  }
+  i = lang.indexOf(';');
+  if (i !== -1) {
+    lang = lang.slice(0, i);
+  }
+  return lang.toLowerCase();
+}
+
 /*
  * express middleware for getting language
  * It checks the lang cookie, and if not present,

src/ssr/Main.jsx

@@ -6,19 +6,12 @@
 import { createHash } from 'crypto';
 import etag from 'etag';
 
-import { langCodeToCC } from '../utils/location';
-import ttags, { getTTag } from '../core/ttag';
+import { getTTag, availableLangs as langs } from '../core/ttag';
 import { getJsAssets, getCssAssets } from '../core/assets';
 import socketEvents from '../socket/socketEvents';
 import { BACKUP_URL } from '../core/config';
 import { getHostFromRequest } from '../utils/ip';
 
-/*
- * generate language list
- */
-const langs = Object.keys(ttags)
-  .map((l) => [l, langCodeToCC(l)]);
-
 /*
  * values that we pass to client scripts
  */

src/ssr/PopUp.jsx

@@ -6,19 +6,12 @@
 /* eslint-disable max-len */
 import etag from 'etag';
 
-import { langCodeToCC } from '../utils/location';
-import ttags, { getTTag } from '../core/ttag';
+import { getTTag, availableLangs as langs } from '../core/ttag';
 import socketEvents from '../socket/socketEvents';
 import { getJsAssets, getCssAssets } from '../core/assets';
 import { BACKUP_URL } from '../core/config';
 import { getHostFromRequest } from '../utils/ip';
 
-/*
- * generate language list
- */
-const langs = Object.keys(ttags)
-  .map((l) => [l, langCodeToCC(l)]);
-
 /*
  * values that we pass to client scripts
  */

src/utils/location.js

@@ -1,50 +0,0 @@
-/*
- * provide location and lang specific features
- */
-
-/*
- * gets preferred language out of localisation string
- * @param location string (like from accept-language header)
- * @return language code
- */
-export function languageFromLocalisation(localisation) {
-  if (!localisation) {
-    return 'en';
-  }
-  let lang = localisation;
-  let i = lang.indexOf('-');
-  if (i !== -1) {
-    lang = lang.slice(0, i);
-  }
-  i = lang.indexOf(',');
-  if (i !== -1) {
-    lang = lang.slice(0, i);
-  }
-  i = lang.indexOf(';');
-  if (i !== -1) {
-    lang = lang.slice(0, i);
-  }
-  return lang.toLowerCase();
-}
-
-/*
- * get country code to language code for displaying flags
- * to languages
- * @param lang 2-char lang code
- * @return 2-char country code
- */
-const lang2CC = {
-  en: 'gb',
-  dz: 'bt',
-  hy: 'am',
-  uk: 'ua',
-  ca: 'ct',
-  sr: 'rs',
-  be: 'by',
-  kk: 'kz',
-  da: 'dk',
-  fa: 'ir',
-};
-export function langCodeToCC(lang) {
-  return lang2CC[lang] || lang;
-}