package database

import (
	"fmt"
	"net"
	"strings"

	"github.com/google/uuid"
)

func generateUUID() uuid.UUID {
	return uuid.New()
}

// detectIPVersion determines if a prefix is IPv4 (returns 4) or IPv6 (returns 6)
func detectIPVersion(prefix string) int {
	if strings.Contains(prefix, ":") {
		return ipVersionV6
	}

	return ipVersionV4
}

// prefixMaskLength returns the mask length of a prefix such as 192.0.2.0/24.
func prefixMaskLength(prefix string) (int, error) {
	_, network, err := net.ParseCIDR(prefix)
	if err != nil {
		return 0, fmt.Errorf("invalid prefix %s: %w", prefix, err)
	}
	maskLength, _ := network.Mask.Size()

	return maskLength, nil
}