Flutter + Firebase storage on the web, work around

firebase_storage_web.dart

// Note this is just a workaround until the offical support of web

// We would need to add these as well
//// ignore_for_file: avoid_web_libraries_in_flutter
//import 'dart:html';
//import 'package:mime/mime.dart';
//import 'package:firebase/firebase.dart' as fb;

// Some upload button is pressed
onPressed: () async {          
  InputElement uploadInput = FileUploadInputElement();
  uploadInput.click();
  uploadInput.onChange.listen((e) async {
    
    final files = uploadInput.files;
    
    if (files.length == 1) {
      final file = files[0];
      final reader = new FileReader();
      reader.onLoadEnd.listen((e) { });
      reader.readAsDataUrl(file);
    }

    File file = files[0];

    // Define destination at server
    fb.StorageReference ref = fb.app('[DEFAULT]').storage().ref('company/logo');
    fb.StorageReference logo = ref.child( file.name );
    var metadata = UploadMetadata(contentType: lookupMimeType(file.name));

    fb.UploadTask uploadTask = logo.put( file, metadata );

    // Optional progress bar
    ProgressDialog pr = ProgressDialog(context, type: ProgressDialogType.Normal, isDismissible: false);
    pr.update( message: tr(context, 'please_wait') );
    pr.show();

    await uploadTask.future.then((UploadTaskSnapshot snapshot){
      pr.update(message: tr(context, 'upload_completed'), progressWidget: Icon(Icons.check_circle_outline, color: Colors.green, size: 58,));
      
      Future.delayed(Duration(seconds: 1)).then((value) {
        pr.hide().whenComplete(() {
          snapshot.ref.getDownloadURL().then((dynamic uri){
            // uri is the link to the uploaded file
            companyService.updateProfile( {'logo': uri.toString()}, (){} );
          });
        });
      });
      
    });
  });
}