fix(mobileconfig): too many underscores for the file name

Author: SapphoSys

src/lib/mobileconfig/export.ts

@@ -7,8 +7,11 @@ import type { MobileConfigExportResult, MobileConfigGenerationOptions } from '$t
 import { downloadFile } from '$utils/misc';
 
 export const getMobileConfigFileName = (account: Pick<Account, 'name'>) => {
-  const safeName = account.name.replace(/[^a-z0-9]/gi, '_').toLowerCase();
-  return `${safeName}_caldav${MOBILE_CONFIG_EXTENSION}`;
+  const safeName = account.name
+    .replace(/[^a-z0-9]+/gi, '_')
+    .replace(/^_+|_+$/g, '')
+    .toLowerCase();
+  return `${safeName ? `${safeName}_` : ''}caldav${MOBILE_CONFIG_EXTENSION}`;
 };
 
 const isSaveDialogCancellation = (error: unknown) => {

src/tests/lib/mobileconfig/index.test.ts

@@ -22,7 +22,11 @@ describe('mobileconfig core helpers', () => {
 
   it('creates a filesystem-safe export filename', () => {
     expect(getMobileConfigFileName({ name: 'Work & Personal' })).toBe(
-      'work___personal_caldav.mobileconfig',
+      'work_personal_caldav.mobileconfig',
     );
+    expect(getMobileConfigFileName({ name: 'chloe (fastmail)' })).toBe(
+      'chloe_fastmail_caldav.mobileconfig',
+    );
+    expect(getMobileConfigFileName({ name: '✨' })).toBe('caldav.mobileconfig');
   });
 });