// Encode encodes uuid.UUID into a string using the least significant bits
// (LSB) first according to the alphabet. if the most significant bits (MSB)
// are 0, the string might be shorter.
func (su *ShortUUID) Encode(u uuid.UUID) string {
var num big.Int
num.SetString(strings.Replace(u.String(), "-", "", 4), 16)
// Calculate encoded length.
factor := math.Log(float64(25)) / math.Log(float64(su.alphabet.Length()))
length := math.Ceil(factor * float64(len(u.Bytes())))
return su.numToString(&num, int(length))
}
func NewCursorFromSource(eventID uuid.UUID, createdAt time.Time) CursorEvents {
res := make([]byte, lengthCursor)
copy(res, eventID.Bytes())
b2, err := createdAt.MarshalBinary()
if err != nil {
println("[WARNING] marshal time", err.Error())
}
copy(res[16:], b2)
return CursorEvents(Base64(res))
}