Base64 should encode bytes rather than string representation of int64

[jiaoyuedave]

func main() {

	// Create a new Node with a Node number of 1
	node, err := snowflake.NewNode(1)
	if err != nil {
		fmt.Println(err)
		return
	}

	// Generate a snowflake ID.
	id := node.Generate()

	// Print out the ID in a few different ways.
	fmt.Println(id)
	fmt.Println(id.Base64())
	b := id.IntBytes()
	fmt.Println(base64.StdEncoding.EncodeToString(b[:]))
}

result:

-129775853767749632
LTEyOTc3NTg1Mzc2Nzc0OTYzMg==
/jLxjG/AEAA=

dig into souce, i found that base64 method use string representation of int64 for encoding, which make no sense:

// Base64 returns a base64 string of the snowflake ID
func (f ID) Base64() string {
	return base64.StdEncoding.EncodeToString(f.Bytes())
}

// Bytes returns a byte slice of the snowflake ID
func (f ID) Bytes() []byte {
	return []byte(f.String())
}

it only make representation much longer.

[bwmarrin]

Thanks for the report, and good catch on this. Let me look at it and decide what we can do.

[mehmetolgundev]

I think, there is no problem here. As I understand @jiaoyuedave ran the code in golang playground. In the golang playground, the time is before the snowflake default epoch. The generated id can never be negative number. This cannot be happened in real life. Also generated base64 result is correct according to the Id.