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

let mainWindow;

function createWindow() {
  mainWindow = new BrowserWindow({ width: 800, height: 600 });
  mainWindow.loadFile('index.html');
  mainWindow.on('closed', function() {
    mainWindow = null;
  });
}

app.on('ready', createWindow);
app.on('window-all-closed', function() {
  if (process.platform !== 'darwin') {
    app.quit();
  }
});

app.on('activate', function() {
  if (mainWindow === null) {
    createWindow();
  }
});