package main

import (
	"fmt"
	"log"

	"github.com/google/gousb"
	"github.com/google/gousb/usbid"
)

/*
 USB Product IDs of the SCS devices:
    0xD010 SCS PTC-IIusb
    0xD011 SCS Tracker / DSP TNC
    0xD012 SCS P4dragon DR-7800
    0xD013 SCS P4dragon DR-7400
    0xD014 - not used
    0xD015 SCS PTC-IIIusb
    0xD016 - not used
    0xD017 - not used
*/

func lsusb() {
	// Only one context should be needed for an application.  It should always be closed.
	ctx := gousb.NewContext()
	defer ctx.Close()

	// OpenDevices is used to find the devices to open.
	devs, err := ctx.OpenDevices(func(desc *gousb.DeviceDesc) bool {
		// The usbid package can be used to print out human readable information.
		fmt.Printf("%03d.%03d %s:%s %s\n", desc.Bus, desc.Address, desc.Vendor, desc.Product, usbid.Describe(desc))
		fmt.Printf("  Protocol: %s\n", usbid.Classify(desc))
		fmt.Println(desc.Configs)
		return false
	})

	// All Devices returned from OpenDevices must be closed.
	defer func() {
		for _, d := range devs {
			d.Close()
		}
	}()

	// OpenDevices can occasionally fail, so be sure to check its return value.
	if err != nil {
		log.Fatalf("list: %s", err)
	}

	for _, dev := range devs {
		// Once the device has been selected from OpenDevices, it is opened
		// and can be interacted with.
		_ = dev
	}
}