package utils

import (
	"crypto/rand"
	"encoding/hex"
	"io"

	"github.com/andybalholm/brotli"
	"github.com/klauspost/compress/flate"
	"github.com/klauspost/compress/gzip"
)

func GenerateActivationCode() string {
	bytes := make([]byte, 16)
	if _, err := rand.Read(bytes); err != nil {
		Logger.Fatalf("Error generating activation code: %v", err)
	}
	return hex.EncodeToString(bytes)
}

func DecompressResponseBody(encoding string, body io.Reader) (io.ReadCloser, error) {
    switch encoding {
    case "gzip":
        return gzip.NewReader(body)
    case "deflate":
        return flate.NewReader(body), nil
    case "br":
        return io.NopCloser(brotli.NewReader(body)), nil
    default:
        return io.NopCloser(body), nil
    }
}