Build human-readable ID using Base32 in Go

human_readable_id_base32.go

package main

import (
	"encoding/base32"
	"fmt"
)

func main() {

	id := 202790

	// Assume the ID is 32-bit integer, fill the slice of size 4 bytes with bits
	data := []byte{ byte((id >> 24) & 0xff), byte((id >> 16) & 0xff), byte((id >> 8) & 0xff), byte(id & 0xff)}
	padding := base32.NoPadding
	str := base32.StdEncoding.WithPadding(padding).EncodeToString(data)
	fmt.Println(str) // AABRQJQ

	decodedBytes, _ := base32.StdEncoding.WithPadding(padding).DecodeString(str)
	fmt.Println(decodedBytes) // [0 3 24 38]
	decodedID := int(decodedBytes[0]) << 24 + int(decodedBytes[1]) << 16 + int(decodedBytes[2]) << 8 + int(decodedBytes[3])

	fmt.Println(decodedID)

}