gid_utils.go

package main

import (
	"fmt"
	"math/rand"
	"time"
)

func main() {

	var g GID
	fmt.Println(g)
}

type GID string

var GIDNumbers = []string{"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F"}

func NewRandomGID() GID {
	rand.Seed(time.Now().UnixNano())

	var gid string

	for len(gid) < 16 {
		numbers_lenght := len(GIDNumbers)
		x := rand.Intn(numbers_lenght)
		gid += GIDNumbers[x]
	}

	return GID(gid)
}

func StringToGID(n string) (GID, bool) {
	data := GID(n)
	check := CheckGID(data)

	return data, check
}

func CheckGID(n GID) bool {
	// lenght check
	if len(n) != 16 {
		return false
	}

	// in list control
	for _, n_value := range n {

		check := false
		for _, g_value := range GIDNumbers {
			if string(n_value) == g_value {
				check = true
				break
			}
		}

		if check != true {
			return false
		}
	}

	return true
}