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resources/frontend/core/i18n/index.js

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+import Vue from 'vue';
+import VueI18n from 'vue-i18n';
+import { getModuleList, ModuleLoaderInterceptor } from '@/moduleLoader';
+import merge from 'lodash/merge';
+import veeValidateEn from 'vee-validate/dist/locale/en.json';
+import veeValidateRu from 'vee-validate/dist/locale/ru.json';
+import moment from 'moment';
+import * as Sentry from '@sentry/vue';
+
+export function getLangCookie() {
+    const v = document.cookie.match('(^|;) ?lang=([^;]*)(;|$)');
+    return v ? v[2] : null;
+}
+
+// Set root domain cookie, ex: *.cattr.app
+export function setLangCookie(lang) {
+    const rootDomain = location.hostname.split('.').reverse().splice(0, 2).reverse().join('.');
+    document.cookie = 'lang=' + lang + '; domain=' + rootDomain;
+}
+
+// Get the browser language
+export function getUserLang() {
+    return typeof navigator.language !== 'undefined' && navigator.language.length
+        ? navigator.language.substring(0, 2).toLowerCase()
+        : 'en';
+}
+
+Vue.use(VueI18n);
+
+let messages = {
+    en: require('./locales/en'),
+    ru: require('./locales/ru'),
+};
+
+let pluralizationRules = {};
+
+ModuleLoaderInterceptor.on('loaded', () => {
+    const modules = Object.values(getModuleList()).map(i => {
+        return i.moduleInstance;
+    });
+
+    modules.forEach(m => {
+        const moduleMessages = m.getLocalizationData();
+        merge(messages, moduleMessages);
+        merge(pluralizationRules, m.getPluralizationRules());
+    });
+});
+
+merge(messages, {
+    en: {
+        validation: veeValidateEn.messages,
+    },
+    ru: {
+        validation: veeValidateRu.messages,
+    },
+});
+
+merge(pluralizationRules, require('./pluralizationRules'));
+
+const locale = getLangCookie() || getUserLang();
+
+Sentry.setTag('locale', locale);
+
+moment.locale(locale);
+
+const i18n = new VueI18n({
+    locale: locale,
+    fallbackLocale: 'en',
+    silentFallbackWarn: true,
+    messages,
+    pluralizationRules,
+});
+
+export default i18n;