code refactor

src/lib/i18n.js

@@ -0,0 +1,80 @@
+import { defaultLanguage, allLanguages } from '../locales/index.js'
+
+export function getAllLanguages() {
+    return allLanguages;
+}
+
+export function getLanguage(locale) {
+    return allLanguages[locale];
+}
+
+export function getDefaultLanguage() {
+    if (!window || !window.navigator) {
+        return defaultLanguage;
+    }
+
+    let browserLocale = window.navigator.browserLanguage || window.navigator.language;
+
+    if (!browserLocale) {
+        return defaultLanguage;
+    }
+
+    if (!allLanguages[browserLocale]) {
+        const locale = getLocaleFromLanguageAlias(browserLocale);
+
+        if (locale) {
+            browserLocale = locale;
+        }
+    }
+
+    if (!allLanguages[browserLocale]) {
+        return defaultLanguage;
+    }
+
+    return browserLocale;
+}
+
+export function getI18nOptions() {
+    return {
+        locale: defaultLanguage,
+        fallbackLocale: defaultLanguage,
+        formatFallbackMessages: true,
+        messages: (function () {
+            const messages = {};
+
+            for (let locale in allLanguages) {
+                if (!Object.prototype.hasOwnProperty.call(allLanguages, locale)) {
+                    continue;
+                }
+
+                const lang = allLanguages[locale];
+                messages[locale] = lang.content;
+            }
+
+            return messages;
+        })()
+    };
+}
+
+function getLocaleFromLanguageAlias(alias) {
+    for (let locale in allLanguages) {
+        if (!Object.prototype.hasOwnProperty.call(allLanguages, locale)) {
+            continue;
+        }
+
+        const lang = allLanguages[locale];
+        const aliases = lang.aliases;
+
+        if (!aliases || aliases.length < 1) {
+            continue;
+        }
+
+        for (let i = 0; i < aliases.length; i++) {
+            if (aliases[i] === alias) {
+                return locale;
+            }
+        }
+    }
+
+    return null;
+}