package gzip

import (
	"bytes"
	"compress/gzip"
	"io/ioutil"
)

func GZIPEn(data []byte) ([]byte, error) {
	var b bytes.Buffer
	gz, err := gzip.NewWriterLevel(&b, gzip.BestCompression)
	if err != nil {
		return nil, err
	}

	if _, err := gz.Write([]byte(data)); err != nil {
		return nil, err
	}
	if err := gz.Flush(); err != nil {
		return nil, err
	}
	if err := gz.Close(); err != nil {
		return nil, err
	}

	return b.Bytes(), nil
}

func GZIPDe(in []byte) ([]byte, error) {
	reader, err := gzip.NewReader(bytes.NewReader(in))
	if err != nil {
		var out []byte
		return out, err
	}
	defer reader.Close()
	return ioutil.ReadAll(reader)
}