package main

import (
	"fmt"
	"log"
	"net"

	"github.com/crip/ripv2"
	"github.com/crip/ripv2/routes"
	"github.com/crip/rtable"
)

func main() {
	rip := ripv2.New()
	routes := routes.New()
	addr := net.UDPAddr{
		Port: 520,
		IP:   net.ParseIP("224.0.0.9"),
	}
	iface := net.Interface{
		Name:  "enp1s0f1",
		Flags: net.FlagMulticast,
	}
	conn, err := net.ListenMulticastUDP("udp4", &iface, &addr)
	if err != nil {
		log.Fatalln(err)
	}
	defer conn.Close()
	buff := make([]byte, 1024)

	log.Println("Running")
	routes.Timer()
	for {
		n, UDPAddr, err := conn.ReadFromUDP(buff)
		if err != nil {
			log.Fatalln(err)
		}
		_ = UDPAddr

		if err := rip.MParse(&buff, n); err != nil {
			log.Fatalln(err)
		}
		routes.ParseRoutes(*UDPAddr, &rip.RIP)
		for _, v := range routes.Routes {
			fmt.Printf("Route:%s\tSubnet:%s\tNexthop:%s\tMetric:%d\tTime: %v\n", v.Addr.String(), v.Subnet.String(), v.Nexthop.String(), v.Metric, v.TTL.Unix())
		}
		rtable.Add(routes)
		fmt.Println("")
	}
}