add webauthn (passkey) support

internal/app/api/v0/model/models_authentication.go

@@ -1,6 +1,11 @@
 package model
 
-import "github.com/h44z/wg-portal/internal/domain"
+import (
+	"slices"
+	"strings"
+
+	"github.com/h44z/wg-portal/internal/domain"
+)
 
 type LoginProviderInfo struct {
 	Identifier  string `json:"Identifier" example:"google"`
@@ -39,3 +44,32 @@ type OauthInitiationResponse struct {
 	RedirectUrl string
 	State       string
 }
+
+type WebAuthnCredentialRequest struct {
+	Name string `json:"Name"`
+}
+type WebAuthnCredentialResponse struct {
+	ID        string `json:"ID"`
+	Name      string `json:"Name"`
+	CreatedAt string `json:"CreatedAt"`
+}
+
+func NewWebAuthnCredentialResponse(src domain.UserWebauthnCredential) WebAuthnCredentialResponse {
+	return WebAuthnCredentialResponse{
+		ID:        src.CredentialIdentifier,
+		Name:      src.DisplayName,
+		CreatedAt: src.CreatedAt.Format("2006-01-02 15:04:05"),
+	}
+}
+
+func NewWebAuthnCredentialResponses(src []domain.UserWebauthnCredential) []WebAuthnCredentialResponse {
+	credentials := make([]WebAuthnCredentialResponse, len(src))
+	for i := range src {
+		credentials[i] = NewWebAuthnCredentialResponse(src[i])
+	}
+	// Sort by CreatedAt, newest first
+	slices.SortFunc(credentials, func(i, j WebAuthnCredentialResponse) int {
+		return strings.Compare(i.CreatedAt, j.CreatedAt)
+	})
+	return credentials
+}