const { app, BrowserWindow } = require('electron')
const path = require('path')

console.log('=== 简单单实例测试 ===')

// 单实例检查
const gotTheLock = app.requestSingleInstanceLock()

if (!gotTheLock) {
  console.log('❌ 检测到已有实例运行，退出当前实例')
  app.quit()
} else {
  console.log('✅ 这是第一个实例，继续启动')
  
  let mainWindow = null
  
  // 监听第二个实例
  app.on('second-instance', (event, commandLine, workingDirectory) => {
    console.log('检测到第二个实例启动，激活现有实例')
    if (mainWindow) {
      if (mainWindow.isMinimized()) {
        mainWindow.restore()
      }
      mainWindow.show()
      mainWindow.focus()
    }
  })
  
  // 创建窗口
  function createWindow() {
    mainWindow = new BrowserWindow({
      width: 800,
      height: 600,
      webPreferences: {
        nodeIntegration: true,
        contextIsolation: false
      }
    })
    
    mainWindow.loadURL('data:text/html,<h1>单实例测试</h1><p>PID: ' + process.pid + '</p><p>时间: ' + new Date().toLocaleString() + '</p>')
    
    console.log('窗口已创建，PID:', process.pid)
    
    mainWindow.on('closed', () => {
      mainWindow = null
    })
  }
  
  app.whenReady().then(() => {
    console.log('应用已准备就绪')
    createWindow()
  })
  
  app.on('window-all-closed', () => {
    console.log('所有窗口已关闭')
    if (process.platform !== 'darwin') {
      app.quit()
    }
  })
  
  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow()
    }
  })
}