Dynamic loading of WebAssets in Webview in Flutter

I have a requirement that I need to create a webview dynamically where the web assets are stored online as a zip. On load of my mobile I need to download the file and unzip it and load it in the webview. For this, I have written the code. I am able to download, unzip and get the file access but, could not load it in the UI. Please look into my code and help me where I am wrong. Also, is it possible the load the assets of web dynamically or only with static approach it can be possible?

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:path_provider/path_provider.dart';
import 'package:firebase_storage/firebase_storage.dart' as firebase_storage;
import 'package:archive/archive.dart';
import 'package:flutter_inappwebview/flutter_inappwebview.dart';

class MyWebViewUsingInAppWebview extends StatelessWidget {
@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Webview Example'),
),
body: InAppWebView(
initialUrlRequest: URLRequest(url: Uri.parse('about:blank')),
onWebViewCreated: (InAppWebViewController webViewController) async {
await downloadAndUnzipFile(webViewController);
},
),
);
}

Future downloadAndUnzipFile(
InAppWebViewController webViewController) async {
String zipFilePath =
'files/forms-td-practice.zip'; // Replace with your zip file path

try {
  firebase_storage.Reference ref =
      firebase_storage.FirebaseStorage.instance.ref(zipFilePath);

  String downloadURL = await ref.getDownloadURL();

  Directory appDocDir = await getApplicationDocumentsDirectory();
  File localFile = File('${appDocDir.path}/example.zip');

  // Download the zip file to the local file system
  await ref.writeToFile(localFile);

  print('Zip file downloaded successfully! Saved to: ${localFile.path}');

  // Unzip the file
  String unzipPath =
      appDocDir.path; // Unzip to the app's documents directory
  List<int> bytes = localFile.readAsBytesSync();
  Archive archive = ZipDecoder().decodeBytes(bytes);

  for (ArchiveFile file in archive) {
    String fileName = '${unzipPath}/${file.name}';
    if (file.isFile) {
      File outFile = File(fileName);
      outFile.createSync(recursive: true);
      outFile.writeAsBytesSync(file.content);

      // If the current file is "index.html", load it into the WebView
      if (file.name == 'forms-td-practice/forms-td-practice/index.html') {
        webViewController.loadUrl(
            urlRequest:
                URLRequest(url: Uri.parse('file://${outFile.path}')));
      }
    }
  }

  print('Zip file extracted successfully!');
} catch (e) {
  print('Error downloading/unzipping file: $e');
}
}
}