//go:build linux || freebsd
// +build linux freebsd

package compression

import (
	"compress/gzip"
	"io"
)

type gzipDecompressor struct{ *BaseDecompressor }

func NewGzipDecompressor() *gzipDecompressor {
	return &gzipDecompressor{NewBaseDecompressor("gzip", []string{"gzip"}, []string{".gz"})}
}

// ✅ Oprava: returns (io.Reader, error)
func (g *gzipDecompressor) Reader(r io.Reader) (io.ReadCloser, error) {
	return gzip.NewReader(r)
}

type gzipCompressor struct{ name string }

func NewGzipCompressor() *gzipCompressor { return &gzipCompressor{name: "gzip"} }
func (g *gzipCompressor) Name() string   { return g.name }
func (g *gzipCompressor) Writer(w io.Writer) (io.WriteCloser, error) {
	return gzip.NewWriter(w), nil
}

func init() { Register(NewGzipDecompressor()) }