// src/pages/agent-office/AgentOffice.jsx
import { useState, useEffect, useCallback } from 'react';
import { useAgentManager } from './hooks/useAgentManager.js';
import { useOfficeCanvas } from './hooks/useOfficeCanvas.js';
import TopBar from './components/TopBar.jsx';
import SidePanel from './components/SidePanel.jsx';
import './AgentOffice.css';

export default function AgentOffice() {
  const {
    agents, pendingTasks, notifications, connected,
    refreshTrigger, clearNotifications
  } = useAgentManager();

  const {
    canvasRef, updateAgentState, setAgentNotification,
    setTheme, setZoom, hitTest, getZoom, wasDragging
  } = useOfficeCanvas();

  const [selectedAgent, setSelectedAgent] = useState(null);
  const [theme, setThemeState] = useState(localStorage.getItem('agent-office-theme') || 'modern');
  const [zoom, setZoomState] = useState(2);

  // WebSocket 상태 → 캔버스 동기화
  useEffect(() => {
    for (const [id, agentState] of Object.entries(agents)) {
      updateAgentState(id, agentState.state, agentState.detail);
    }
  }, [agents, updateAgentState]);

  // 알림 → 캔버스 동기화
  useEffect(() => {
    for (const [id, count] of Object.entries(notifications)) {
      setAgentNotification(id, count);
    }
  }, [notifications, setAgentNotification]);

  // 캔버스 클릭 핸들러
  const handleCanvasClick = useCallback((e) => {
    if (wasDragging()) return; // 드래그 후 발생하는 클릭 무시
    const result = hitTest(e.clientX, e.clientY);
    if (result.type === 'agent') {
      setSelectedAgent(result.id);
      clearNotifications(result.id);
      setAgentNotification(result.id, 0);
    } else {
      setSelectedAgent(null);
    }
  }, [hitTest, clearNotifications, setAgentNotification, wasDragging]);

  // 테마 변경
  const handleThemeChange = useCallback((name) => {
    setThemeState(name);
    setTheme(name);
  }, [setTheme]);

  // 줌 변경
  const handleZoomChange = useCallback((level) => {
    setZoomState(level);
    setZoom(level);
  }, [setZoom]);

  // 선택된 에이전트의 pending task
  const pendingTask = selectedAgent
    ? pendingTasks.find(t => t.agent_id === selectedAgent)
    : null;

  return (
    <div className="ao-root">
      <TopBar
        connected={connected}
        theme={theme}
        onThemeChange={handleThemeChange}
        zoom={zoom}
        onZoomChange={handleZoomChange}
      />

      <div className="ao-main">
        <canvas
          ref={canvasRef}
          className="ao-canvas"
          onClick={handleCanvasClick}
        />

        {selectedAgent && (
          <SidePanel
            agentId={selectedAgent}
            agentState={agents[selectedAgent]}
            pendingTask={pendingTask}
            onClose={() => setSelectedAgent(null)}
            refreshTrigger={refreshTrigger}
          />
        )}
      </div>
    </div>
  );
}

export function Component() {
  return <AgentOffice />;
}