add validation

Signed-off-by: bryans-go <[email protected]>

pkg/views/gitprovider/select.go

@@ -7,6 +7,7 @@ import (
 	"errors"
 	"fmt"
 	"log"
+	"regexp"
 	"slices"
 
 	"github.com/charmbracelet/huh"
@@ -146,6 +147,16 @@ func GitProviderSelectionView(gitProviderAddView *apiclient.SetGitProviderConfig
 					if *gitProviderAddView.SigningMethod != "none" && str == "" {
 						return errors.New("signing key cannot be blank when a signing method is selected")
 					}
+					if *gitProviderAddView.SigningMethod == "gpg" {
+						if err := isValidGPGKey(str); err != nil {
+							return err
+						}
+					}
+					if *gitProviderAddView.SigningMethod == "ssh" {
+						if err := isValidSSHKey(str); err != nil {
+							return err
+						}
+					}
 					return nil
 				}),
 		).WithHeight(5).WithHideFunc(func() bool {
@@ -163,6 +174,22 @@ func GitProviderSelectionView(gitProviderAddView *apiclient.SetGitProviderConfig
 	}
 }
 
+func isValidGPGKey(key string) error {
+	gpgKeyPattern := regexp.MustCompile(`^[A-Fa-f0-9]{16,40}$`)
+	if !gpgKeyPattern.MatchString(key) {
+		return errors.New("invalid GPG key: must be 16-40 hexadecimal characters")
+	}
+	return nil
+}
+
+func isValidSSHKey(key string) error {
+	sshKeyPattern := regexp.MustCompile(`^(ssh-(rsa|ed25519|dss)|ecdsa-sha2-nistp(256|384|521))\s+[A-Za-z0-9+/=]+$`)
+	if !sshKeyPattern.MatchString(key) {
+		return errors.New("invalid SSH key: must start with valid SSH key type (e.g., ssh-rsa, ssh-ed25519)")
+	}
+	return nil
+}
+
 func providerRequiresUsername(gitProviderId string) bool {
 	return gitProviderId == "bitbucket" || gitProviderId == "bitbucket-server" || gitProviderId == "aws-codecommit"
 }