package s6netdev

import (
	"fmt"
	"strings"
)

func (t *S6SvcTree) CreateIfaceService(iface string) *S6Svc {
	return t.S6New(S6SvcName(fmt.Sprintf("interface.%s.create", iface)), &S6SvcTypes.Oneshot)
}

func (t *S6SvcTree) LinkIfaceService(iface string) *S6Svc {
	return t.S6New(S6SvcName(fmt.Sprintf("interface.%s.link", iface)), &S6SvcTypes.Oneshot)
}

func (t *S6SvcTree) Services(i Iface) (r []*S6Svc) {
	r = append(r, t.ConfigureServices(i)...)
	r = append(r, t.ReadyServices(i)...)
	return
}

func (t *S6SvcTree) ConfigureServices(i Iface) (r []*S6Svc) {
	svc_create := t.CreateIfaceService(i.Name)
	r = append(r, svc_create)

	// Defaults to be overridden
	svc_create.Up = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", i.Name),
		fmt.Sprintf("ip link add $INTERFACE type %s", i.Type.str),
	}, "\n")
	svc_create.Down = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", i.Name),
		"ip link del dev $INTERFACE",
	}, "\n")

	for _, v := range i.Type.deps {
		// External dummy services, should be ignored at commit
		cs := t.S6New(S6SvcName(v), &S6SvcTypes.Oneshot)
		svc_create.S6Children(cs)
	}

	// Overrides
	switch i.Type {
	case &NetdevIfTypes.Phys:
		fallthrough
	case &NetdevIfTypes.Loopback:
		{
			svc_create.Up = strings.Join([]string{
				NETDEV_EXECLINE_HEADER,
				ExeclineDefine("INTERFACE", i.Name),
				"bcnm-waitif 1 $INTERFACE",
			}, "\n")
			svc_create.Down = ""
		}
	case &NetdevIfTypes.Vlan:
		{
			svc_create.Up = strings.Join([]string{
				NETDEV_EXECLINE_HEADER,
				ExeclineDefine("INTERFACE", i.Name),
				ExeclineDefine("PARENT", i.Parent.Name),
				ExeclineDefine("VLAN", fmt.Sprintf("%d", i.VlanId)),
				fmt.Sprintf("ip link add link $PARENT name $INTERFACE type %s id $VLAN", i.Type.str),
			}, "\n")
			svc_create.S6Children(t.CreateIfaceService(i.Parent.Name))
		}
	case &NetdevIfTypes.Vrf:
		{
			// Default if no table defined
			if i.Table == 0 {
				i.Table = RouteTable(512)
			}
			svc_create.Up = strings.Join([]string{
				NETDEV_EXECLINE_HEADER,
				ExeclineDefine("INTERFACE", i.Name),
				ExeclineDefine("TABLE", fmt.Sprintf("%d", i.Table)),
				fmt.Sprintf("ip link add $INTERFACE type %s table $TABLE", i.Type.str),
			}, "\n")
		}
	case &NetdevIfTypes.Wireguard:
		{
			t.NetdevDependBundleStage(i.Name, "configure", t.NetdevWireguardConfig(i))
		}
	}

	for _, v := range i.Slaves {
		r = append(r, t.NetdevEnslaveInterface(v.Name, i.Name))
	}

	for _, v := range i.Properties {
		r = append(r, t.NetdevIfaceProp(i, v))
	}

	if i.DHCP.V4 {
		r = append(r, t.NetdevIfaceDHCP(i, 4))
	}
	if i.DHCP.V6 {
		r = append(r, t.NetdevIfaceDHCP(i, 6))
	}

	for _, v := range i.Sysctls.V4 {
		r = append(r, t.NetdevIfaceIpSysctl(i, 4, v))
	}
	for _, v := range i.Sysctls.V6 {
		r = append(r, t.NetdevIfaceIpSysctl(i, 6, v))
	}

	for _, v := range i.Addresses {
		r = append(r, t.NetdevIfaceAddr(i, v))
	}
	for _, v := range i.Routes {
		r = append(r, t.NetdevRoute(i, v))
	}

	if i.MACAddr != nil {
		r = append(r, t.NetdevConfigureIfaceMAC(i, i.MACAddr))
	}

	bundle_configure := t.NetdevDependBundleStage(i.Name, "configure", svc_create)
	r = append(r, bundle_configure)
	r = append(r, svc_create.Children...)

	return
}

func (t *S6SvcTree) ReadyServices(i Iface) (r []*S6Svc) {
	svc_link := t.S6New(S6SvcName(fmt.Sprintf("interface.%s.link", i.Name)), &S6SvcTypes.Oneshot)
	r = append(r, svc_link)

	svc_link.Up = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", i.Name),
		"ip link set dev $INTERFACE up",
	}, "\n")
	svc_link.Down = strings.Join([]string{
		NETDEV_EXECLINE_HEADER,
		ExeclineDefine("INTERFACE", i.Name),
		"ip link set dev $INTERFACE down",
	}, "\n")
	svc_link.S6Children(t.netdevCreateBundleStage(i.Name, "configure"))

	bundle_ready := t.NetdevDependBundleStage(i.Name, "ready", svc_link)
	r = append(r, bundle_ready)

	return
}