package common

import (
	"encoding/base64"
	"encoding/binary"
	"github.com/matchsystems/werr"
)

const (
	EncodingRawUrl = "encoring_row_url"
	EncodingRawStd = "encoring_row_std"
)

// GetEncoding Returns base64 encoding based on the provided string
func GetEncoding(encoding string) (*base64.Encoding, error) {
	switch encoding {
	case EncodingRawUrl:
		return base64.RawURLEncoding, nil
	case EncodingRawStd:
		return base64.RawStdEncoding, nil
	default:
		return nil, werr.Wrapf(ErrInvalidArgument, "unknown encoding %s", encoding)
	}
}

// float64ToBytes converts float64 to []byte
func float64ToBytes(f float64) []byte {
	buf := make([]byte, 8)
	binary.BigEndian.PutUint64(buf, uint64(f))
	return buf
}