import { useEffect, useMemo, useState } from 'react';
import { MoonStar, SunMedium, X } from 'lucide-react';
import {
  useAppStore,
} from './store/appStore';
import { useBotsSync } from './hooks/useBotsSync';
import { ImageFactoryModule } from './modules/images/ImageFactoryModule';
import { BotWizardModule } from './modules/onboarding/BotWizardModule';
import { BotDashboardModule } from './modules/dashboard/BotDashboardModule';
import { pickLocale } from './i18n';
import { appZhCn } from './i18n/app.zh-cn';
import { appEn } from './i18n/app.en';
import './App.css';

function App() {
  const { theme, setTheme, locale, setLocale, activeBots } = useAppStore();
  const [showImageFactory, setShowImageFactory] = useState(false);
  const [showCreateWizard, setShowCreateWizard] = useState(false);
  useBotsSync();
  const t = pickLocale(locale, { 'zh-cn': appZhCn, en: appEn });
  const urlView = useMemo(() => {
    const params = new URLSearchParams(window.location.search);
    const forcedBotId =
      (params.get('botId') || params.get('bot_id') || params.get('id') || '').trim();
    const compactRaw = (params.get('compact') || params.get('h5') || params.get('mobile') || '').trim().toLowerCase();
    const compactByFlag = ['1', 'true', 'yes', 'on'].includes(compactRaw);
    const compactMode = compactByFlag || forcedBotId.length > 0;
    return { forcedBotId, compactMode };
  }, []);

  useEffect(() => {
    const forced = urlView.forcedBotId;
    if (!forced) {
      document.title = t.title;
      return;
    }
    const bot = activeBots[forced];
    const botName = String(bot?.name || '').trim();
    document.title = botName ? `${t.title} - ${botName}` : `${t.title} - ${forced}`;
  }, [activeBots, t.title, urlView.forcedBotId]);

  return (
    <div className={`app-shell ${urlView.compactMode ? 'app-shell-compact' : ''}`} data-theme={theme}>
      <div className="app-frame">
        <header className="app-header">
          <div className="row-between app-header-top">
            <div className="app-title">
              <img src="/app-bot-icon.svg" alt="Nanobot" className="app-title-icon" />
              <div>
                <h1>{t.title}</h1>
              </div>
            </div>

            <div className="global-switches">
              <div className="switch-compact">
                <button
                  className={`switch-btn ${theme === 'dark' ? 'active' : ''}`}
                  onClick={() => setTheme('dark')}
                  title={t.dark}
                  aria-label={t.dark}
                >
                  <MoonStar size={14} />
                </button>
                <button
                  className={`switch-btn ${theme === 'light' ? 'active' : ''}`}
                  onClick={() => setTheme('light')}
                  title={t.light}
                  aria-label={t.light}
                >
                  <SunMedium size={14} />
                </button>
              </div>

              <div className="switch-compact">
                <button
                  className={`switch-btn switch-btn-lang ${locale === 'zh' ? 'active' : ''}`}
                  onClick={() => setLocale('zh')}
                  title={t.zh}
                  aria-label={t.zh}
                >
                  <span>ZH</span>
                </button>
                <button
                  className={`switch-btn switch-btn-lang ${locale === 'en' ? 'active' : ''}`}
                  onClick={() => setLocale('en')}
                  title={t.en}
                  aria-label={t.en}
                >
                  <span>EN</span>
                </button>
              </div>
            </div>
          </div>
        </header>

        <main className="main-stage">
          <BotDashboardModule
            onOpenCreateWizard={() => setShowCreateWizard(true)}
            onOpenImageFactory={() => setShowImageFactory(true)}
            forcedBotId={urlView.forcedBotId || undefined}
            compactMode={urlView.compactMode}
          />
        </main>
      </div>

      {!urlView.compactMode && showImageFactory && (
        <div className="modal-mask app-modal-mask" onClick={() => setShowImageFactory(false)}>
          <div className="modal-card app-modal-card" onClick={(e) => e.stopPropagation()}>
            <div className="modal-title-row modal-title-with-close">
              <div className="modal-title-main">
                <h3>{t.nav.images.title}</h3>
              </div>
              <div className="modal-title-actions">
                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowImageFactory(false)} title={t.close} aria-label={t.close}>
                  <X size={14} />
                </button>
              </div>
            </div>
            <div className="app-modal-body">
              <ImageFactoryModule />
            </div>
          </div>
        </div>
      )}

      {!urlView.compactMode && showCreateWizard && (
        <div className="modal-mask app-modal-mask" onClick={() => setShowCreateWizard(false)}>
          <div className="modal-card app-modal-card" onClick={(e) => e.stopPropagation()}>
            <div className="modal-title-row modal-title-with-close">
              <div className="modal-title-main">
                <h3>{t.nav.onboarding.title}</h3>
              </div>
              <div className="modal-title-actions">
                <button className="btn btn-secondary btn-sm icon-btn" onClick={() => setShowCreateWizard(false)} title={t.close} aria-label={t.close}>
                  <X size={14} />
                </button>
              </div>
            </div>
            <div className="app-modal-body">
              <BotWizardModule
                onCreated={() => {
                  setShowCreateWizard(false);
                }}
                onGoDashboard={() => setShowCreateWizard(false)}
              />
            </div>
          </div>
        </div>
      )}
    </div>
  );
}

export default App;