Reload page on system resume to fix stale Messenger connection

After a system suspend/wake cycle, the long-poll/WebSocket connection to
messenger.com is silently broken. This adds a powerMonitor 'resume' listener
that waits for network connectivity via ensureOnline(), then reloads the page
to restore the connection without user intervention.

Fixes #103

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Author: worthyfarmstead-rgb

source/index.ts

@@ -12,6 +12,7 @@ import {
 	MenuItemConstructorOptions,
 	systemPreferences,
 	nativeTheme,
+	powerMonitor,
 } from 'electron';
 import {ipcMain as ipc} from 'electron-better-ipc';
 import {autoUpdater} from 'electron-updater';
@@ -430,6 +431,15 @@ function createMainWindow(): BrowserWindow {
 
 	const {webContents} = mainWindow;
 
+	// Reload the page on system resume to restore the Messenger connection,
+	// which is lost when the computer sleeps. Wait for network connectivity
+	// before reloading to avoid a blank page on slow reconnects.
+	// See: https://github.com/sindresorhus/caprine/issues/103
+	powerMonitor.on('resume', async () => {
+		await ensureOnline();
+		webContents.reload();
+	});
+
 	webContents.on('dom-ready', async () => {
 		// Set window title to Caprine
 		mainWindow.setTitle(app.name);