move wg keygen to backend

backend/service/server.go

@@ -162,6 +162,8 @@ func (s *ServerService) GenKeypair(keyType string, options string) []string {
 		return s.generateTLSKeyPair(options)
 	case "reality":
 		return s.generateRealityKeyPair()
+	case "wireguard":
+		return generateWireGuardKey()
 	}
 
 	return []string{"Failed to generate keypair"}
@@ -192,3 +194,11 @@ func (s *ServerService) generateRealityKeyPair() []string {
 	publicKey := privateKey.PublicKey()
 	return []string{"PrivateKey: " + base64.RawURLEncoding.EncodeToString(privateKey[:]), "PublicKey: " + base64.RawURLEncoding.EncodeToString(publicKey[:])}
 }
+
+func generateWireGuardKey() []string {
+	privateKey, err := wgtypes.GeneratePrivateKey()
+	if err != nil {
+		return []string{"Failed to generate wireguard keypair: ", err.Error()}
+	}
+	return []string{"PrivateKey: " + privateKey.String(), "PublicKey: " + privateKey.PublicKey().String()}
+}