import { useState, useEffect } from 'react';
import { motion, AnimatePresence } from 'framer-motion';
import './index.css';
import { Sidebar, MainViewType } from './components/Sidebar';
import { ChatArea } from './components/ChatArea';
import { RightPanel } from './components/RightPanel';
import { SettingsLayout } from './components/Settings/SettingsLayout';
import { HandTaskPanel } from './components/HandTaskPanel';
import { SchedulerPanel } from './components/SchedulerPanel';
import { TeamCollaborationView } from './components/TeamCollaborationView';
import { useGatewayStore } from './store/gatewayStore';
import { useTeamStore } from './store/teamStore';
import { getStoredGatewayToken } from './lib/gateway-client';
import { pageVariants, defaultTransition, fadeInVariants } from './lib/animations';
import { Bot, Users } from 'lucide-react';
import { EmptyState } from './components/ui';

type View = 'main' | 'settings';

function App() {
  const [view, setView] = useState<View>('main');
  const [mainContentView, setMainContentView] = useState<MainViewType>('chat');
  const [selectedHandId, setSelectedHandId] = useState<string | undefined>(undefined);
  const [selectedTeamId, setSelectedTeamId] = useState<string | undefined>(undefined);
  const { connect, connectionState } = useGatewayStore();
  const { activeTeam, setActiveTeam, teams } = useTeamStore();

  useEffect(() => {
    document.title = 'ZCLAW';
  }, []);

  useEffect(() => {
    if (connectionState === 'disconnected') {
      const gatewayToken = getStoredGatewayToken();
      connect(undefined, gatewayToken).catch(() => {});
    }
  }, [connect, connectionState]);

  // 当切换到非 hands 视图时清除选中的 Hand
  const handleMainViewChange = (view: MainViewType) => {
    setMainContentView(view);
    if (view !== 'hands') {
      // 可选：清除选中的 Hand
      // setSelectedHandId(undefined);
    }
  };

  const handleSelectTeam = (teamId: string) => {
    const team = teams.find(t => t.id === teamId);
    if (team) {
      setActiveTeam(team);
      setSelectedTeamId(teamId);
    }
  };

  if (view === 'settings') {
    return <SettingsLayout onBack={() => setView('main')} />;
  }

  return (
    <div className="h-screen flex overflow-hidden text-gray-800 text-sm">
      {/* 左侧边栏 */}
      <Sidebar
        onOpenSettings={() => setView('settings')}
        onMainViewChange={handleMainViewChange}
        selectedHandId={selectedHandId}
        onSelectHand={setSelectedHandId}
        selectedTeamId={selectedTeamId}
        onSelectTeam={handleSelectTeam}
      />

      {/* 中间区域 */}
      <AnimatePresence mode="wait">
        <motion.main
          key={mainContentView}
          variants={pageVariants}
          initial="initial"
          animate="animate"
          exit="exit"
          transition={defaultTransition}
          className="flex-1 flex flex-col bg-white relative overflow-hidden"
        >
          {mainContentView === 'hands' && selectedHandId ? (
            <HandTaskPanel
              handId={selectedHandId}
              onBack={() => setSelectedHandId(undefined)}
            />
          ) : mainContentView === 'hands' ? (
            <EmptyState
              icon={<Bot className="w-8 h-8" />}
              title="Select a Hand"
              description="Choose an autonomous capability package from the list on the left to view its task list and execution results."
            />
          ) : mainContentView === 'workflow' ? (
            <motion.div
              variants={fadeInVariants}
              initial="initial"
              animate="animate"
              className="flex-1 overflow-y-auto"
            >
              <SchedulerPanel />
            </motion.div>
          ) : mainContentView === 'team' ? (
            activeTeam ? (
              <TeamCollaborationView teamId={activeTeam.id} />
            ) : (
              <EmptyState
                icon={<Users className="w-8 h-8" />}
                title="Select or Create a Team"
                description="Choose a team from the list on the left, or click + to create a new multi-Agent collaboration team."
              />
            )
          ) : (
            <ChatArea />
          )}
        </motion.main>
      </AnimatePresence>

      {/* 右侧边栏 */}
      <RightPanel />
    </div>
  );
}

export default App;