import { ipcMain,app,BrowserWindow } from 'electron';
import { getDeviceId, getWiredConnectionName,netmaskToCidr } from '../utils/utils';
const { exec } = require('child_process');
const { promisify } = require('util');
const execAsync = promisify(exec);

// 模拟grpc服务端
import { BTGrpcClient } from '../grpc/BTGrpcClient';
import { MockBTService } from '../grpc/MockBTService';

// 客户端和服务端 通信
const IS_TEST_MODE = true; // 设置为 false 时连接真实后端
const GRPC_SERVER_PORT = 50051;
// 先声明变量，但不立即初始化
let btGrpcClient: BTGrpcClient | null = null;
let mockServer: MockBTService | null = null;
let healthCheckInterval: NodeJS.Timeout | null = null; // 声明一个变量来存储定时器

const window = getBrowserWindowRuntime();

// 初始化 gRPC 客户端
async function initializeGrpc() {
  try {
    if (IS_TEST_MODE) {
      console.log('启动模拟 gRPC 服务器...');
      mockServer = new MockBTService();
      await mockServer.start(GRPC_SERVER_PORT);
      
      // 给一点时间让服务器启动
      await new Promise(resolve => setTimeout(resolve, 1000));
    }

    // 创建 BTGrpcClient 实例连接到gRPC服务
    btGrpcClient = new BTGrpcClient(); 
    
    // 注册进度回调函数，用于接收下载进度更新
    btGrpcClient.registerProgressCallback('all', (progress) => {
      const mainWindow = BrowserWindow.getFocusedWindow();
      if (mainWindow) {
        mainWindow.webContents.send('grpc-progress-update', progress);
      }
    });
    
    // 测试连接
    setTimeout(async () => {
      try {
        const connected = await btGrpcClient!.testConnection();
        console.log('gRPC 连接状态:', connected ? '已连接' : '未连接');
        
        const mainWindow = BrowserWindow.getFocusedWindow();
        if (mainWindow) {
          mainWindow.webContents.send('grpc-connection-status', {
            connected,
            isMock: IS_TEST_MODE
          });
        }
      } catch (error) {
        console.error('连接测试失败:', error);
      }
    }, 2000);

    // 启动健康检查
    startHealthCheck();

  } catch (error) {
    console.error('gRPC 初始化失败:', error);
  }
}

// 启动健康检查
function startHealthCheck() {
  if (healthCheckInterval) {
    clearInterval(healthCheckInterval);
  }
  
  healthCheckInterval = setInterval(async () => {
    try {
      if (!btGrpcClient) return;
      
      const isConnected = await btGrpcClient.testConnection();
      const mainWindow = BrowserWindow.getFocusedWindow();
      if (mainWindow) {
        mainWindow.webContents.send('grpc-connection-status', {
          connected: isConnected,
          state: btGrpcClient.getConnectionState(),
          isMock: IS_TEST_MODE
        });
      }
    } catch (error) {
      console.error('健康检查失败:', error);
    }
  }, 5000); // 每5秒检查一次
}


// 应用启动时初始化
app.whenReady().then(() => {
  initializeGrpc();
});

// 应用退出时清理
app.on('before-quit', async () => {
  if (healthCheckInterval) {
    clearInterval(healthCheckInterval);
  }
  
  if (mockServer) {
    await mockServer.stop();
  }
});

// 添加 gRPC 相关的 IPC 处理程序
ipcMain.handle('grpc-start-download', async (event, config) => {
  try {
    if (!btGrpcClient) {
      return { 
        success: false, 
        error: 'gRPC客户端未初始化' 
      };
    }

    console.log('开始gRPC下载:', config);
    // gRPC客户端向服务端发起 StartDownload 调用
    const result = await btGrpcClient.startDownload({
      torrent_url: config.torrentUrl,
      item_name: config.itemName,
      item_id: config.itemId
    });
    return { success: true, data: result };
  } catch (error: any) {
    console.error('gRPC下载失败:', error);
    return { 
      success: false, 
      error: error.message || '未知错误',
      details: error.details 
    };
  }
});

ipcMain.handle('grpc-stop-download', async (event, downloadId) => {
  try {
    if (!btGrpcClient) {
      return { 
        success: false, 
        error: 'gRPC客户端未初始化' 
      };
    }

    const result = await btGrpcClient.stopDownload(downloadId);
    return { success: true, data: result };
  } catch (error: any) {
    return { 
      success: false, 
      error: error.message || '未知错误' 
    };
  }
});

ipcMain.handle('grpc-check-connection', async () => {
  if (!btGrpcClient) {
    return { connected: false, error: 'gRPC客户端未初始化' };
  }
  
  return { 
    connected: btGrpcClient.isConnected(),
    state: btGrpcClient.getConnectionState()
  };
});

// 重新连接 gRPC
ipcMain.handle('grpc-reconnect', async () => {
  try {
    if (btGrpcClient) {
      btGrpcClient.reconnect();
      return { success: true, message: '正在重新连接' };
    } else {
      await initializeGrpc();
      return { success: true, message: '正在初始化连接' };
    }
  } catch (error: any) {
    return { 
      success: false, 
      error: error.message || '重新连接失败' 
    };
  }
});


// 监听渲染进程发送的消息
ipcMain.handle('getPlatform', () => {
  return `hi, i'm from ${process.platform}`;
});

// 窗口控制:最小化，退出全屏
ipcMain.on('close-app', () => {
  app.quit();
});

ipcMain.on('minimize-app', () => {
  window?.minimize();
});

ipcMain.on('exit-kiosk', () => {
  if (window) {
    window.setFullScreen(false);
  }
});


ipcMain.handle('get-deviceid',async()=>{
  const deviceId = await getDeviceId();
  console.log(`Using device ID: ${deviceId}`);
  // TODO:传给后端
})

/* IPC 处理应用有线网络配置 */
ipcMain.handle('apply-wired-config',async(event,config)=>{
  // return {
  //   success: true,
  //   message: '网络配置已成功应用'
  // };
  try{
    console.log('应用网络配置:', config);
    // 获取有线连接名称
    const connectionName = await getWiredConnectionName();
    console.log('有线连接名称:', connectionName);
    
    if(config.method==='static'){
      // 使用nmcli配置静态IP，需要使用sudo权限，一次性设置所有参数
      let modifyCmd = `echo "unis@123" | sudo -S nmcli connection modify "${connectionName}" ipv4.method manual ipv4.addresses "${config.ipv4}/${netmaskToCidr(config.subnetMask)}" ipv4.gateway "${config.ipv4Gateway}"`;
      const dnsServers = [config.primaryDns, config.secondaryDns].filter(Boolean).join(',');
      modifyCmd += ` ipv4.dns "${dnsServers}"`;
      
      // 添加 IPv6 配置（如果存在 ipv6Gateway）????ipv6和长度需要吗？ui只写了ipv6网关
      // ipv6PrefixLength 是 IPv6 地址的前缀长度，类似于 IPv4 中的子网掩码。????
      if (config.ipv6 && config.ipv6Gateway) {
        modifyCmd += ` ipv6.method manual ipv6.addresses "${config.ipv6}/${config.ipv6PrefixLength || 64}" ipv6.gateway "${config.ipv6Gateway}"`;
      }

      // 执行配置命令
      console.log('执行命令:', modifyCmd.replace('unis@123', '***'));
      await execAsync(modifyCmd);
      
      // 重新激活连接
      await execAsync(`echo "unis@123" | sudo -S nmcli connection up "${connectionName}"`);
        
    }else{
      // DHCP配置，一次性设置所有参数
      const modifyCmd = `echo "unis@123" | sudo -S nmcli connection modify "${connectionName}" ipv4.method auto ipv4.addresses "" ipv4.gateway "" ipv4.dns ""`;
      
      // 执行配置命令
      console.log('执行命令:', modifyCmd.replace('unis@123', '***'));
      await execAsync(modifyCmd);
      
      // 重新激活连接
      await execAsync(`echo "unis@123" | sudo -S nmcli connection up "${connectionName}"`);
    }
    return {
      success: true,
      message: '网络配置已成功应用'
    };
  }catch(error:unknown){
    console.error('应用网络配置失败:', error);
    return {
      success: false,
      message: `配置失败: ${error instanceof Error ? error.message : String(error || '未知错误')}`
    };
  }
})