main.js

const { app, BrowserWindow, screen, ipcMain, Tray, Menu, nativeImage } = require('electron');
const path = require('path');
const fs = require('fs');
const { execSync } = require('child_process');

let win = null;
let tray = null;
const BAR_H = 1;
const DATA_PATH = path.join(app.getPath('userData'), 'notes-data.json');

function getStartupEnabled() {
  return app.getLoginItemSettings().openAtLogin;
}

function setStartup(enable) {
  app.setLoginItemSettings({
    openAtLogin: enable,
    path: process.execPath,
    args: []
  });
}

function loadData() {
  try {
    if (fs.existsSync(DATA_PATH)) {
      return JSON.parse(fs.readFileSync(DATA_PATH, 'utf8'));
    }
  } catch (e) {}
  return { cols: { g: [], b: [], r: [] } };
}

function saveData(data) {
  try {
    fs.writeFileSync(DATA_PATH, JSON.stringify(data, null, 2), 'utf8');
  } catch (e) {}
}

function createWindow() {
  const { width } = screen.getPrimaryDisplay().workAreaSize;

  win = new BrowserWindow({
    x: 0,
    y: 0,
    width: width,
    height: BAR_H,
    frame: false,
    transparent: true,
    alwaysOnTop: true,
    skipTaskbar: true,
    resizable: false,
    movable: false,
    focusable: true,
    webPreferences: {
      preload: path.join(__dirname, 'preload.js'),
      contextIsolation: true,
      nodeIntegration: false
    }
  });

  win.setAlwaysOnTop(true, 'screen-saver');
  win.loadFile('renderer.html');

  win.on('blur', () => {
    win.webContents.send('window-blur');
  });
}

function createTray() {
  const img = nativeImage.createEmpty();
  tray = new Tray(img);
  tray.setToolTip('TopBar Notes');

  const updateMenu = () => {
    const startupOn = getStartupEnabled();
    const menu = Menu.buildFromTemplate([
      { label: 'TopBar Notes', enabled: false },
      { type: 'separator' },
      {
        label: 'Launch at Windows startup',
        type: 'checkbox',
        checked: startupOn,
        click: () => {
          setStartup(!startupOn);
          updateMenu();
        }
      },
      { type: 'separator' },
      { label: 'Quit', click: () => app.quit() }
    ]);
    tray.setContextMenu(menu);
  };

  updateMenu();
  tray.on('click', () => {
    if (win) win.show();
  });
}

app.whenReady().then(() => {
  createWindow();
  createTray();

  ipcMain.handle('expand-window', () => {
    const { width, height } = screen.getPrimaryDisplay().workAreaSize;
    const expandH = Math.min(480, Math.floor(height * 0.6));
    win.setBounds({ x: 0, y: 0, width, height: expandH }, false);
    win.setAlwaysOnTop(true, 'screen-saver');
  });

  ipcMain.handle('collapse-window', () => {
    const { width } = screen.getPrimaryDisplay().workAreaSize;
    win.setBounds({ x: 0, y: 0, width, height: BAR_H }, false);
    win.setAlwaysOnTop(true, 'screen-saver');
  });

  ipcMain.handle('quit-app', () => app.quit());

  ipcMain.handle('load-data', () => loadData());
  ipcMain.handle('save-data', (_, data) => saveData(data));
});

app.on('window-all-closed', () => {});