import deAccess from '@dorfteich/shared/i18n/de/access.json';
import deAuth from '@dorfteich/shared/i18n/de/auth.json';
import deComments from '@dorfteich/shared/i18n/de/comments.json';
import deCommon from '@dorfteich/shared/i18n/de/common.json';
import deEditor from '@dorfteich/shared/i18n/de/editor.json';
import deErrors from '@dorfteich/shared/i18n/de/errors.json';
import deExport from '@dorfteich/shared/i18n/de/export.json';
import deFiles from '@dorfteich/shared/i18n/de/files.json';
import deFont from '@dorfteich/shared/i18n/de/font.json';
import deGraph from '@dorfteich/shared/i18n/de/graph.json';
import deImport from '@dorfteich/shared/i18n/de/import.json';
import deLabels from '@dorfteich/shared/i18n/de/labels.json';
import deLegal from '@dorfteich/shared/i18n/de/legal.json';
import deLinks from '@dorfteich/shared/i18n/de/links.json';
import deMembers from '@dorfteich/shared/i18n/de/members.json';
import deNotifications from '@dorfteich/shared/i18n/de/notifications.json';
import dePlugins from '@dorfteich/shared/i18n/de/plugins.json';
import dePublic from '@dorfteich/shared/i18n/de/public.json';
import deQuotas from '@dorfteich/shared/i18n/de/quotas.json';
import deSearch from '@dorfteich/shared/i18n/de/search.json';
import deSetup from '@dorfteich/shared/i18n/de/setup.json';
import deApiTokens from '@dorfteich/shared/i18n/de/apiTokens.json';
import deSystem from '@dorfteich/shared/i18n/de/system.json';
import deTasks from '@dorfteich/shared/i18n/de/tasks.json';
import deUsers from '@dorfteich/shared/i18n/de/users.json';
import deWatches from '@dorfteich/shared/i18n/de/watches.json';
import deSettings from '@dorfteich/shared/i18n/de/settings.json';
import enAccess from '@dorfteich/shared/i18n/en/access.json';
import enAuth from '@dorfteich/shared/i18n/en/auth.json';
import enComments from '@dorfteich/shared/i18n/en/comments.json';
import enCommon from '@dorfteich/shared/i18n/en/common.json';
import enEditor from '@dorfteich/shared/i18n/en/editor.json';
import enErrors from '@dorfteich/shared/i18n/en/errors.json';
import enExport from '@dorfteich/shared/i18n/en/export.json';
import enFiles from '@dorfteich/shared/i18n/en/files.json';
import enFont from '@dorfteich/shared/i18n/en/font.json';
import enGraph from '@dorfteich/shared/i18n/en/graph.json';
import enImport from '@dorfteich/shared/i18n/en/import.json';
import enLabels from '@dorfteich/shared/i18n/en/labels.json';
import enLegal from '@dorfteich/shared/i18n/en/legal.json';
import enLinks from '@dorfteich/shared/i18n/en/links.json';
import enMembers from '@dorfteich/shared/i18n/en/members.json';
import enNotifications from '@dorfteich/shared/i18n/en/notifications.json';
import enPlugins from '@dorfteich/shared/i18n/en/plugins.json';
import enPublic from '@dorfteich/shared/i18n/en/public.json';
import enQuotas from '@dorfteich/shared/i18n/en/quotas.json';
import enSearch from '@dorfteich/shared/i18n/en/search.json';
import enSetup from '@dorfteich/shared/i18n/en/setup.json';
import enApiTokens from '@dorfteich/shared/i18n/en/apiTokens.json';
import enSystem from '@dorfteich/shared/i18n/en/system.json';
import enTasks from '@dorfteich/shared/i18n/en/tasks.json';
import enUsers from '@dorfteich/shared/i18n/en/users.json';
import enWatches from '@dorfteich/shared/i18n/en/watches.json';
import enSettings from '@dorfteich/shared/i18n/en/settings.json';
import i18n from 'i18next';
import LanguageDetector from 'i18next-browser-languagedetector';
import { initReactI18next } from 'react-i18next';

/**
 * Translation resources are bundled (no async loading): the whole catalog
 * is small, and the offline-capable editor (ADR 0003) must not depend on
 * fetching language files. Detection: ?lng=… wins, then the browser
 * language; the user-profile setting (issue #17) will be layered on top.
 */
void i18n
  .use(LanguageDetector)
  .use(initReactI18next)
  .init({
    resources: {
      en: {
        common: enCommon,
        comments: enComments,
        errors: enErrors,
        access: enAccess,
        auth: enAuth,
        settings: enSettings,
        editor: enEditor,
        export: enExport,
        files: enFiles,
        font: enFont,
        graph: enGraph,
        import: enImport,
        labels: enLabels,
        legal: enLegal,
        links: enLinks,
        members: enMembers,
        notifications: enNotifications,
        plugins: enPlugins,
        public: enPublic,
        quotas: enQuotas,
        search: enSearch,
        setup: enSetup,
        apiTokens: enApiTokens,
        system: enSystem,
        tasks: enTasks,
        users: enUsers,
        watches: enWatches,
      },
      de: {
        common: deCommon,
        comments: deComments,
        errors: deErrors,
        access: deAccess,
        auth: deAuth,
        settings: deSettings,
        editor: deEditor,
        export: deExport,
        files: deFiles,
        font: deFont,
        graph: deGraph,
        import: deImport,
        labels: deLabels,
        legal: deLegal,
        links: deLinks,
        members: deMembers,
        notifications: deNotifications,
        plugins: dePlugins,
        public: dePublic,
        quotas: deQuotas,
        search: deSearch,
        setup: deSetup,
        apiTokens: deApiTokens,
        system: deSystem,
        tasks: deTasks,
        users: deUsers,
        watches: deWatches,
      },
    },
    defaultNS: 'common',
    fallbackLng: 'en',
    supportedLngs: ['de', 'en'],
    interpolation: { escapeValue: false }, // React already escapes.
    detection: { order: ['querystring', 'navigator'], lookupQuerystring: 'lng', caches: [] },
  });

// Mirror the active language onto <html lang> (issue #163, WCAG 3.1.1):
// index.html ships a static fallback, and screen readers pick their voice
// from this attribute. Fires on init and on every later switch (e.g. the
// user-profile locale applied in auth-context).
i18n.on('languageChanged', (lng) => {
  document.documentElement.lang = lng;
});
if (i18n.resolvedLanguage) document.documentElement.lang = i18n.resolvedLanguage;

export default i18n;