Flutter InAppWebView File Download Assistance

I'm encountering roadblocks with file downloads in Flutter's InAppWebView. The files need to be automatically downloaded to the device and opened for the user. The types of files I'm primarily dealing with are PDF, Microsoft Office files, and compressed (ZIP) files. The solution must work seamlessly on both iOS and Android.

Ideal Skills:
- Proficient in Flutter and Dart
- Experience with InAppWebView package
- Familiarity with file download handling in mobile apps
- Knowledge of cross-platform iOS and Android development
- Understanding of handling various file types in app

Please bid only if you have the relevant experience and skills. Thank you!