package main

import (
	"fmt"
	"log"
	"os"

	"git.redxen.eu/nnd/s6-netdev"
)

func main() {
	var (
		err error
		l   = log.New(os.Stderr, "s6-netdev: ", log.Ltime|log.Lshortfile|log.Lmsgprefix)
		ifs = make(s6netdev.IfMap)
	)
	t := s6netdev.S6NewTree()

	// Loopback
	ifs.AddIf(&s6netdev.Iface{
		Name: "lo",
		Type: &s6netdev.NetdevIfTypes.Loopback,
	})

	// Physical interfaces
	for _, v := range []string{"p1s0", "p9s0"} {
		ifs.AddIf(&s6netdev.Iface{
			Name: fmt.Sprintf("en%s", v),
			Type: &s6netdev.NetdevIfTypes.Phys,
		})
	}

	// Bridge interfaces
	ifs.AddIf(&s6netdev.Iface{
		Name: "br-home",
		Type: &s6netdev.NetdevIfTypes.Bridge,
		DHCP: s6netdev.DHCP_IP{V4: true},
		Properties: []s6netdev.Property{
			{Key: "stp_state", Value: "0", Default: "0"},
			{Key: "mcast_snooping", Value: "0", Default: "1"},
		},
		Sysctls: s6netdev.Sysctl_IP{
			// No IPv6 autoconf
			V6: []s6netdev.Property{
				{Key: "accept_ra", Value: "0", Default: "0"},
			},
		},
	})

	ifs.AddIf(&s6netdev.Iface{
		Name: "br-main",
		Type: &s6netdev.NetdevIfTypes.Bridge,
		Properties: []s6netdev.Property{
			{Key: "stp_state", Value: "0", Default: "0"},
			{Key: "mcast_snooping", Value: "0", Default: "1"},
		},
	})

	// VRFs
	ifs.AddIf(&s6netdev.Iface{
		Name:  "vrf-v6",
		Type:  &s6netdev.NetdevIfTypes.Vrf,
		Table: 10,
	})

	for _, m := range []struct {
		Master string
		Slaves []string
	}{
		{
			Master: "vrf-v6",
			Slaves: []string{
				"br-main",
			},
		},
		{
			Master: "br-main",
			Slaves: []string{
				"enp1s0",
			},
		},
		{
			Master: "br-home",
			Slaves: []string{
				"enp9s0",
			},
		},
	} {
		master := ifs[m.Master]
		for _, slave := range m.Slaves {
			master.Slaves = append(master.Slaves, ifs[slave])
		}
		ifs[m.Master] = master
	}

	// Unreachable routes
	ifs["lo"].Routes = append(ifs["lo"].Routes, s6netdev.Route{
		Default: true,
		IPver:   6,
		Type:    "unreachable",
		Vrf:     ifs["vrf-v6"],
		Metric:  4278198272,
	})

	for _, v := range ifs {
		t.Services(*v)
	}

	for _, v := range t.S6Services() {
		if s6netdev.NetdevIsDummy(v.Name) {
			continue
		}
		l.Printf("Commiting %s\n", v.Name)
		if err = t.S6CommitService(v); err != nil {
			l.Fatalf("Failed to commit %s, %s\n", v.Name, err)
		}
	}
}