package water

import "io"

// Interface is a TUN/TAP interface.
type Interface struct {
	isTAP bool
	io.ReadWriteCloser
	name string
}

// Create a new TAP interface whose name is ifName.
// If ifName is empty, a default name (tap0, tap1, ... ) will be assigned.
// ifName should not exceed 16 bytes.
func NewTAP(ifName string) (ifce *Interface, err error) {
	return newTAP(ifName)
}

// Create a new TUN interface whose name is ifName.
// If ifName is empty, a default name (tap0, tap1, ... ) will be assigned.
// ifName should not exceed 16 bytes.
func NewTUN(ifName string) (ifce *Interface, err error) {
	return newTUN(ifName)
}

// Returns true if ifce is a TUN interface, otherwise returns false;
func (ifce *Interface) IsTUN() bool {
	return !ifce.isTAP
}

// Returns true if ifce is a TAP interface, otherwise returns false;
func (ifce *Interface) IsTAP() bool {
	return ifce.isTAP
}

// Returns the interface name of ifce, e.g. tun0, tap1, etc..
func (ifce *Interface) Name() string {
	return ifce.name
}