'use client';

import { useEffect, useState, useCallback, useRef } from 'react';
import { SignalRConnectionManager } from '@/lib/signalr/ConnectionManager';
import { SIGNALR_CONFIG } from '@/lib/signalr/config';
import { useAuthStore } from '@/stores/authStore';

export function useProjectHub(projectId?: string) {
  const isAuthenticated = useAuthStore((state) => state.isAuthenticated);
  const [connectionState, setConnectionState] = useState<
    'disconnected' | 'connecting' | 'connected' | 'reconnecting'
  >('disconnected');
  const managerRef = useRef<SignalRConnectionManager | null>(null);

  useEffect(() => {
    if (!isAuthenticated) return;

    const manager = new SignalRConnectionManager(
      SIGNALR_CONFIG.HUB_URLS.PROJECT
    );
    managerRef.current = manager;

    const unsubscribe = manager.onStateChange(setConnectionState);

    // 监听项目事件
    manager.on('ProjectUpdated', (data: any) => {
      console.log('[ProjectHub] Project updated:', data);
      // TODO: 触发项目数据重新加载
    });

    manager.on('IssueCreated', (issue: any) => {
      console.log('[ProjectHub] Issue created:', issue);
      // TODO: 添加到看板
    });

    manager.on('IssueUpdated', (issue: any) => {
      console.log('[ProjectHub] Issue updated:', issue);
      // TODO: 更新看板
    });

    manager.on('IssueDeleted', (data: { IssueId: string }) => {
      console.log('[ProjectHub] Issue deleted:', data);
      // TODO: 从看板移除
    });

    manager.on('IssueStatusChanged', (data: any) => {
      console.log('[ProjectHub] Issue status changed:', data);
      // TODO: 移动看板卡片
    });

    manager.on('UserJoinedProject', (data: any) => {
      console.log('[ProjectHub] User joined:', data);
    });

    manager.on('UserLeftProject', (data: any) => {
      console.log('[ProjectHub] User left:', data);
    });

    manager.on(
      'TypingIndicator',
      (data: { UserId: string; IssueId: string; IsTyping: boolean }) => {
        console.log('[ProjectHub] Typing indicator:', data);
        // TODO: 显示正在输入提示
      }
    );

    manager.start();

    return () => {
      unsubscribe();
      manager.stop();
    };
  }, [isAuthenticated]);

  // 加入项目房间
  const joinProject = useCallback(async (projectId: string) => {
    if (!managerRef.current) return;

    try {
      await managerRef.current.invoke('JoinProject', projectId);
      console.log(`[ProjectHub] Joined project ${projectId}`);
    } catch (error) {
      console.error('[ProjectHub] Error joining project:', error);
    }
  }, []);

  // 离开项目房间
  const leaveProject = useCallback(async (projectId: string) => {
    if (!managerRef.current) return;

    try {
      await managerRef.current.invoke('LeaveProject', projectId);
      console.log(`[ProjectHub] Left project ${projectId}`);
    } catch (error) {
      console.error('[ProjectHub] Error leaving project:', error);
    }
  }, []);

  // 发送正在输入指示器
  const sendTypingIndicator = useCallback(
    async (projectId: string, issueId: string, isTyping: boolean) => {
      if (!managerRef.current) return;

      try {
        await managerRef.current.invoke(
          'SendTypingIndicator',
          projectId,
          issueId,
          isTyping
        );
      } catch (error) {
        console.error('[ProjectHub] Error sending typing indicator:', error);
      }
    },
    []
  );

  // 当 projectId 变化时自动加入/离开
  useEffect(() => {
    if (connectionState === 'connected' && projectId) {
      joinProject(projectId);

      return () => {
        leaveProject(projectId);
      };
    }
  }, [connectionState, projectId, joinProject, leaveProject]);

  return {
    connectionState,
    joinProject,
    leaveProject,
    sendTypingIndicator,
    isConnected: connectionState === 'connected',
  };
}