gmail-to-exchange365/electron/main.js

Complete Gmail to Exchange 365 migration tool with UI - Migrate emails, attachments, and folders seamlessly

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

let mainWindow;

function createWindow() {
  mainWindow = new BrowserWindow({
    width: 1000,
    height: 900,
    webPreferences: {
      nodeIntegration: false,
      contextIsolation: true,
      webSecurity: true
    },
    icon: path.join(__dirname, "../assets/icon.png"), // Optional icon
    title: "Gmail → Exchange Migrator"
  });

  // Load the local server
  const port = process.env.PORT || 3000;
  mainWindow.loadURL(`http://localhost:${port}`);

  // Open DevTools in development
  if (process.env.NODE_ENV === "development") {
    mainWindow.webContents.openDevTools();
  }

  mainWindow.on("closed", () => {
    mainWindow = null;
  });
}

// This method will be called when Electron has finished initialization
app.whenReady().then(() => {
  createWindow();

  app.on("activate", () => {
    // On macOS, re-create window when dock icon is clicked
    if (BrowserWindow.getAllWindows().length === 0) {
      createWindow();
    }
  });
});

// Quit when all windows are closed
app.on("window-all-closed", () => {
  // On macOS, keep app running even when all windows are closed
  if (process.platform !== "darwin") {
    app.quit();
  }
});

// Handle external links
app.on("web-contents-created", (event, contents) => {
  contents.on("new-window", (event, navigationUrl) => {
    event.preventDefault();
    // Open OAuth URLs in default browser
    if (navigationUrl.includes("login.microsoftonline.com") || 
        navigationUrl.includes("accounts.google.com")) {
      require("electron").shell.openExternal(navigationUrl);
    }
  });
});