recurring-checklist/main.js

const { app, BrowserWindow, Menu, dialog, ipcMain } = require('electron');
const path = require('path');
const fs = require('fs/promises');
const APP_VERSION = require('./package.json').version;

let mainWindow;

function createWindow() {
  mainWindow = new BrowserWindow({
    width: 1200,
    height: 800,
    show: false, // avoid white flash; show when ready
    backgroundColor: '#121212',
    webPreferences: {
      nodeIntegration: true,
      contextIsolation: false
    },
    icon: path.join(__dirname, 'build', 'icon.ico')
  });

  // Use absolute path so packaged app can load index.html reliably
  mainWindow.loadFile(path.join(__dirname, 'index.html'));

  buildMenu();

  mainWindow.once('ready-to-show', () => {
    mainWindow.show();
  });
  
  // Open DevTools in development (comment out for production)
  // mainWindow.webContents.openDevTools();
}

ipcMain.handle('export-checklists', async (event, data) => {
  try {
    const parentWindow = BrowserWindow.fromWebContents(event.sender);
    const { canceled, filePath } = await dialog.showSaveDialog(parentWindow, {
      title: 'Save checklists',
      defaultPath: path.join(app.getPath('documents'), 'recurring-checklists.json'),
      filters: [{ name: 'JSON Files', extensions: ['json'] }]
    });

    if (canceled || !filePath) {
      return { canceled: true };
    }

    await fs.writeFile(filePath, data, 'utf-8');
    return { filePath };
  } catch (error) {
    return { error: error.message };
  }
});

ipcMain.handle('import-checklists', async (event) => {
  try {
    const parentWindow = BrowserWindow.fromWebContents(event.sender);
    const { canceled, filePaths } = await dialog.showOpenDialog(parentWindow, {
      title: 'Open checklist file',
      defaultPath: app.getPath('documents'),
      filters: [{ name: 'JSON Files', extensions: ['json'] }],
      properties: ['openFile']
    });

    if (canceled || !filePaths || filePaths.length === 0) {
      return { canceled: true };
    }

    const filePath = filePaths[0];
    const data = await fs.readFile(filePath, 'utf-8');
    return { filePath, data };
  } catch (error) {
    return { error: error.message };
  }
});

function buildMenu() {
  const template = [
    {
      label: 'Help',
      submenu: [
        {
          label: 'About',
          click: () => {
            dialog.showMessageBox({
              type: 'info',
              title: 'About',
              message: `Recurring Checklist — Build ${APP_VERSION}`,
              detail: [
                `Version ${APP_VERSION}`,
                '',
                'Copyright & Non-Distribution Disclaimer',
                '',
                '© Christian Bridges. All rights reserved.',
                '',
                'This material is protected by copyright law. No part of this work may be copied, reproduced, distributed, shared, published, uploaded, or transmitted in any form or by any means—electronic, mechanical, or otherwise—without the prior written permission of Christian Bridges.',
                '',
                'Unauthorized use, duplication, or distribution of this material is strictly prohibited.'
              ].join('\n')
            });
          }
        }
      ]
    }
  ];

  const menu = Menu.buildFromTemplate(template);
  Menu.setApplicationMenu(menu);
}

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

  app.on('activate', () => {
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow();
    }
  });
});

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