/**
 * @license
 * Copyright 2025-2026 NomiFun (nomifun.com)
 * SPDX-License-Identifier: Apache-2.0
 */

// Runtime patches must be imported early
import './utils/ui/runtimePatches';

// Browser adapter setup
import '@/common/adapter/browser';

// React and core dependencies
import type { PropsWithChildren } from 'react';
import React, { useEffect, useState } from 'react';
import { createRoot } from 'react-dom/client';

// Context providers
import { AuthProvider } from './hooks/context/AuthContext';
import { FeedbackProvider } from './hooks/context/FeedbackContext';
import { ThemeProvider } from './hooks/context/ThemeContext';

// Arco Design
import { ConfigProvider } from '@arco-design/web-react';
// Configure Arco Design to use React 18's createRoot, fixing Message component's CopyReactDOM.render error
import '@arco-design/web-react/es/_util/react-19-adapter';
import '@arco-design/web-react/dist/css/arco.css';
import enUS from '@arco-design/web-react/es/locale/en-US';
import zhCN from '@arco-design/web-react/es/locale/zh-CN';
import { useTranslation } from 'react-i18next';

// Styles
import 'uno.css';
import './styles/arco-override.css';
import './styles/themes/index.css';

// Config service — kick off initialization before i18n / theme modules load,
// so their startup paths (which await configService.whenReady()) observe the
// authoritative settings from the backend instead of the empty cache.
import { configService } from '@/common/config/configService';
configService.initialize().catch((err) => {
  console.error('Failed to initialize config:', err);
});

// i18n
import './services/i18n';
import { registerPwa } from './services/registerPwa';

import { mutate as swrMutate } from 'swr';
import { DETECTED_AGENTS_SWR_KEY, fetchDetectedAgents } from './utils/model/agentTypes';
import { repairAllCronJobTimeZonesOnce } from '@renderer/pages/cron/repairCronJobTimeZone';

// Components and utilities
import Layout from './components/layout/Layout';
import Router from './components/layout/Router';
import Sider from './components/layout/Sider';
import { useAuth } from './hooks/context/AuthContext';
import { ConversationHistoryProvider } from './hooks/context/ConversationHistoryContext';
import HOC from './utils/ui/HOC';

const arcoLocales: Record<string, typeof enUS> = {
  'zh-CN': zhCN,
  'en-US': enUS,
};

const AppProviders: React.FC<PropsWithChildren> = ({ children }) =>
  React.createElement(
    AuthProvider,
    null,
    React.createElement(ThemeProvider, null, React.createElement(FeedbackProvider, null, children))
  );

const Config: React.FC<PropsWithChildren> = ({ children }) => {
  const {
    i18n: { language },
  } = useTranslation();
  const arcoLocale = arcoLocales[language] ?? enUS;

  return React.createElement(ConfigProvider, { theme: { primaryColor: '#4E5969' }, locale: arcoLocale }, children);
};

const Main = () => {
  const { ready } = useAuth();
  const [configReady, setConfigReady] = useState(false);

  useEffect(() => {
    if (!ready) return;
    // Prefetch `/api/agents` in parallel with configService.initialize() and
    // seed the shared SWR cache so the Guid page's model/mode selectors can
    // read `handshake.available_models` on the very first render — without
    // waiting for a session to be created.
    Promise.all([
      configService.initialize().catch((err) => {
        console.error('Failed to initialize config:', err);
      }),
      fetchDetectedAgents()
        .then((agents) => swrMutate(DETECTED_AGENTS_SWR_KEY, agents, false))
        .catch((err) => {
          console.error('Failed to prefetch agents:', err);
        }),
    ]).finally(() => setConfigReady(true));
  }, [ready]);

  useEffect(() => {
    if (!ready) return;
    void repairAllCronJobTimeZonesOnce();
  }, [ready]);

  if (!ready || !configReady) {
    return null;
  }

  return (
    <Router
      layout={
        <ConversationHistoryProvider>
          <Layout sider={<Sider />} />
        </ConversationHistoryProvider>
      }
    />
  );
};

const App = HOC.Wrapper(Config)(Main);

void registerPwa();

const root = createRoot(document.getElementById('root')!);
root.render(
  <AppProviders>
    <App />
  </AppProviders>
);