package tunnel

import (
	"compress/gzip"
	"encoding/gob"
	"io"
)

type DataFrame struct {
	ID      ID
	Type    Type
	Payload []byte
}

func (d *DataFrame) Encode(w io.Writer) error {
	gz := gzip.NewWriter(w)
	defer gz.Close()
	gob := gob.NewEncoder(gz)
	return gob.Encode(d)
}

func (d *DataFrame) Decode(r io.Reader) error {
	gz, err := gzip.NewReader(r)
	if err != nil {
		return err
	}
	defer gz.Close()
	gob := gob.NewDecoder(gz)
	return gob.Decode(d)
}

func (d *DataFrame) Read(p []byte) (int, error) {
	return copy(p, d.Payload), nil
}

func (d *DataFrame) Write(p []byte) (int, error) {
	return copy(d.Payload, p), nil
}