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package ui
import (
"errors"
"fmt"
"net"
"strings"
"github.com/manifoldco/promptui"
)
var errEmptyValue = errors.New("value is empty")
// NotEmpty is a validation function that checks that the prompted string is not
// empty.
func NotEmpty() promptui.ValidateFunc {
return func(s string) error {
if strings.TrimSpace(s) == "" {
return errEmptyValue
}
return nil
}
}
// Address is a validation function that checks that the prompted string is a
// valid TCP address.
func Address() promptui.ValidateFunc {
return func(s string) error {
if _, _, err := net.SplitHostPort(s); err != nil {
return fmt.Errorf("%s is not an TCP address", s)
}
return nil
}
}
// IPAddress is validation function that checks that the prompted string is a
// valid IP address.
func IPAddress() promptui.ValidateFunc {
return func(s string) error {
if net.ParseIP(s) == nil {
return fmt.Errorf("%s is not an ip address", s)
}
return nil
}
}
// DNS is a validation function that checks that the prompted string is a valid
// DNS name or IP address.
func DNS() promptui.ValidateFunc {
return func(s string) error {
if strings.TrimSpace(s) == "" {
return errEmptyValue
}
if ip := net.ParseIP(s); ip != nil {
return nil
}
if _, _, err := net.SplitHostPort(s + ":443"); err != nil {
return fmt.Errorf("%s is not a valid DNS name or IP address", s)
}
return nil
}
}
// YesNo is a validation function that checks for a Yes/No answer.
func YesNo() promptui.ValidateFunc {
return func(s string) error {
s = strings.ToLower(strings.TrimSpace(s))
switch s {
case "y", "yes", "n", "no":
return nil
default:
return fmt.Errorf("%s is not a valid answer", s)
}
}
}
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