package helper

import (
	"hash/fnv"
	"math"
	"os"
)

func FileExists(filePath string) bool {
	_, err := os.Stat(filePath)
	return err == nil || os.IsExist(err)
}

func HashMod(hashStr string) int {
	hash := fnv.New32a()
	_, _ = hash.Write([]byte(hashStr))

	hashValue := hash.Sum32()
	return int(math.Mod(float64(hashValue), 32))
}