package utils import ( "math" "strings" ) func MaskPhoneNumber(phoneNumber string) string { if phoneNumber == "" { return phoneNumber } numToMask := math.Min(5, float64(len(phoneNumber))) mask := strings.Repeat("*", int(numToMask)) firstMasked := phoneNumber[:int(numToMask)-1] lastMasked := phoneNumber[9:] maskedPhoneNumber := firstMasked + mask + lastMasked return maskedPhoneNumber }