site: attempt to guess default language

(from the browser's preferences set via navigator.language and
navigator.languages)

1 files changed, 18 insertions, 1 deletions

diff --git a/site/i18n.js b/site/i18n.js
index 38ffe7b..5f882c5 100644
--- a/site/i18n.js
+++ b/site/i18n.js
@@ -54,7 +54,6 @@ let locale = "en";
 // is found, it returns the key as a fallback value
 // (therefore, keys should themselves be understandable texts)
 export function _(key) {
-    console.log("getting translation for ", locale, key);
     return !(locale in langs) ? key
         : !(key in langs[locale]) ? key
         : langs[locale][key]
@@ -64,4 +63,22 @@ export function setLang (loc) {
     locale = loc;
 }
 
+/// attempt to set the site's language to the browser's preference.
+/// in case it's not supported it tries any of the languages in
+/// navigator.languages, and then falls back to english.
+export function tryBrowserDefaultLang () {
+    let guess = navigator.language;
+    if (guess in langs) {
+        setLang(lang);
+    } else {
+        for (var lang of navigator.languages) {
+            if (lang in langs) {
+                setLang (lang);
+                return;
+            }
+        }
+        setLang("en");
+    }
+}
+
 export default _;