Desktop App to produce Autoinstall USB

[ehharvey]

(): optional goal

• [ ] Downloads Ubuntu ISO
• [x] Discovers USB Drives that have an Ubuntu installation on it
• [ ] (Formats/Partitions USB Drive as Fat32*)
• [ ] (Extracts ISO onto USB)
• [x] Records user VPN authentication secret(s)
• [x] Insert secret information (rn: just Tailscale VPN secrets) onto USB
• [x] Inserts Autoinstall (user-data, meta-data) files onto USB
• [ ] Figure out how to add built desktop apps (Mac, Windows, Linux) to GitHub releases

See desktop app workflow for more details

7zip in flutter

• We have a way to do so by including 7zip as an asset and then writing it to disk + running it
• The harder part is recreating the ISO (xorriso)
• For now, let's skip worrying about how to get 7zip/xorriso working

USB management in flutter

• No easy cross platform way to format or partition USB drives
• Let's skip for now

[Gabeele]

It's not possible to directly detect whether a USB drive has a particular operating system or ISO installed through Flutter, as Flutter is a framework for building user interfaces and doesn't have direct access to the underlying system.

However, you can detect whether a USB drive is connected and retrieve information about its name, path, and storage capacity using the flutter_usb_detector package. Here's an example of how you could use it:

First, add flutter_usb_detector to your pubspec.yaml file:

yaml

dependencies:
  flutter_usb_detector: ^1.0.0

Then, import the package and use the FlutterUsbDetector class to detect connected USB drives and retrieve information about them:

dart

import 'package:flutter/material.dart';
import 'package:flutter_usb_detector/flutter_usb_detector.dart';

class UsbDetectorPage extends StatefulWidget {
  @override
  _UsbDetectorPageState createState() => _UsbDetectorPageState();
}

class _UsbDetectorPageState extends State<UsbDetectorPage> {
  List<UsbDevice> devices = [];

  @override
  void initState() {
    super.initState();
    FlutterUsbDetector().startListening(onDeviceDetected);
  }

  @override
  void dispose() {
    FlutterUsbDetector().stopListening();
    super.dispose();
  }

  void onDeviceDetected(UsbDevice device) {
    setState(() {
      devices.add(device);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('USB Detector'),
      ),
      body: ListView.builder(
        itemCount: devices.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(devices[index].name),
            subtitle: Text('Capacity: ${devices[index].capacity}'),
            trailing: Icon(Icons.usb),
          );
        },
      ),
    );
  }
}

This code sets up a ListView that displays the names and capacities of connected USB drives, and adds any detected drives to the devices list. When a USB drive is connected, the onDeviceDetected function is called with a UsbDevice object that contains information about the drive, including its name, path, and capacity.

To check whether a particular USB drive contains a Ubuntu ISO, you would need to inspect the contents of the drive programmatically. One way to do this would be to use the dart:io library to search for files with a particular name or extension, such as ubuntu.iso. However, keep in mind that this would not guarantee that the file found is actually a valid Ubuntu ISO or that it has been installed correctly.