refactor(desktop): extract error handling into modules/errors.ts

surfsense_desktop/src/modules/errors.ts

@@ -0,0 +1,33 @@
+import { app, clipboard, dialog } from 'electron';
+
+export function showErrorDialog(title: string, error: unknown): void {
+  const err = error instanceof Error ? error : new Error(String(error));
+  console.error(`${title}:`, err);
+
+  if (app.isReady()) {
+    const detail = err.stack || err.message;
+    const buttonIndex = dialog.showMessageBoxSync({
+      type: 'error',
+      buttons: ['OK', process.platform === 'darwin' ? 'Copy Error' : 'Copy error'],
+      defaultId: 0,
+      noLink: true,
+      message: title,
+      detail,
+    });
+    if (buttonIndex === 1) {
+      clipboard.writeText(`${title}\n${detail}`);
+    }
+  } else {
+    dialog.showErrorBox(title, err.stack || err.message);
+  }
+}
+
+export function registerGlobalErrorHandlers(): void {
+  process.on('uncaughtException', (error) => {
+    showErrorDialog('Unhandled Error', error);
+  });
+
+  process.on('unhandledRejection', (reason) => {
+    showErrorDialog('Unhandled Promise Rejection', reason);
+  });
+}