// This creates a simple hello world window
package main

import 	(
	"net"
	"strings"
	// "git.wit.org/wit/gui"
)

var DEBUGNET bool = false

// this doesn't work
/*
func watchNetworkInterfaces() {
	// Get list of network interfaces
	interfaces, _ := net.Interfaces()

	// Set up a notification channel
	notification := make(chan net.Interface)

	log(DEBUGNET, "watchNet()")
	// Start goroutine to watch for changes
	go func() {
		log(DEBUGNET, "watchNet() func")
		for {
			log(DEBUGNET, "forever loop start")
			// Check for changes in each interface
			for _, i := range interfaces {
				log(DEBUGNET, "something on i =", i)
				if status := i.Flags & net.FlagUp; status != 0 {
					notification <- i
					log(DEBUGNET, "something on i =", i)
				}
			}
			log(DEBUGNET, "forever loop end")
		}
	}()
}
*/

func IsIPv6(address string) bool {
	return strings.Count(address, ":") >= 2
}

func IsReal(ip *net.IP) bool {
	if (ip.IsPrivate() || ip.IsLoopback() || ip.IsLinkLocalUnicast()) {
		log(DEBUGNET, "\t\tIP is Real = false")
		return false
	} else {
		log(DEBUGNET, "\t\tIP is Real = true")
		return true
	}
}

func scanInterfaces() {
	ifaces, _ := net.Interfaces()
	me.ifnew = ifaces
	log(DEBUGNET, SPEW, ifaces)
	for _, i := range ifaces {
		addrs, _ := i.Addrs()
		// log("range ifaces = ", i)
		log("*net.Interface.Name = ", i.Name)
		log(args.VerboseNet, SPEW, i)
		log(DEBUGNET, SPEW, addrs)
		for _, addr := range addrs {
			log(DEBUGNET, "\taddr =", addr)
			log(DEBUGNET, SPEW, addrs)
			ips, _ := net.LookupIP(addr.String())
			log(DEBUGNET, "\tLookupIP(addr) =", ips)
			switch v := addr.(type) {
			case *net.IPNet:
				log(DEBUGNET, "\t\taddr.(type) = *net.IPNet")
				log(DEBUGNET, "\t\taddr.(type) =", v)
				ip := v.IP
				log(DEBUGNET, "\t\taddr.IP =", ip)
				var t string
				t = "IPv4"
				if (IsIPv6(ip.String())) {
					log(DEBUGNET, "\t\tIP is IPv6")
					t = "IPv6"
				} else {
					log(DEBUGNET, "\t\tIP is IPv4")
				}
				if (IsReal(&ip)) {
					log("\tIP is Real    ", t, i.Name, ip)
				} else {
					log("\tIP is not Real", t, i.Name, ip)
				}
				log(DEBUGNET, "\t\tIP is IsPrivate() =", ip.IsPrivate())
				log(DEBUGNET, "\t\tIP is IsLoopback() =", ip.IsLoopback())
				log(DEBUGNET, "\t\tIP is IsLinkLocalUnicast() =", ip.IsLinkLocalUnicast())
				// log("\t\tIP is () =", ip.())
			default:
				log(DEBUGNET, "\t\taddr.(type) = NO IDEA WHAT TO DO HERE v =", v)
			}
		}
	}
}