feat: implement passkey-based authentication

internal/gateway/handlers/register/handlers.go

@@ -0,0 +1,52 @@
+package register
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/go-webauthn/webauthn/protocol"
+	"github.com/labstack/echo/v4"
+	"github.com/onsonr/sonr/crypto/mpc"
+	"github.com/onsonr/sonr/pkg/common/response"
+)
+
+func HandleCreateProfile(c echo.Context) error {
+	dat := CreateProfileData{
+		FirstNumber: 1,
+		LastNumber:  2,
+	}
+	return response.TemplEcho(c, ProfileFormView(dat))
+}
+
+func HandlePasskeyStart(c echo.Context) error {
+	challenge, _ := protocol.CreateChallenge()
+	handle := c.FormValue("handle")
+	firstName := c.FormValue("first_name")
+	lastName := c.FormValue("last_name")
+
+	ks, err := mpc.NewKeyset()
+	if err != nil {
+		return echo.NewHTTPError(http.StatusInternalServerError, err.Error())
+	}
+	dat := RegisterPasskeyData{
+		Address:       ks.Address(),
+		Handle:        handle,
+		Name:          fmt.Sprintf("%s %s", firstName, lastName),
+		Challenge:     challenge.String(),
+		CreationBlock: "00001",
+	}
+	return response.TemplEcho(c, LinkCredentialView(dat))
+}
+
+func HandlePasskeyFinish(c echo.Context) error {
+	// Get the raw credential JSON string
+	credentialJSON := c.FormValue("credential")
+	if credentialJSON == "" {
+		return echo.NewHTTPError(http.StatusBadRequest, "missing credential data")
+	}
+	_, err := extractCredentialDescriptor(credentialJSON)
+	if err != nil {
+		return err
+	}
+	return response.TemplEcho(c, LoadingVaultView())
+}