add service

pkg/errors/codes.go

@@ -6,6 +6,8 @@ const (
 	AuthInvalidToken       = "AUTH_INVALID_TOKEN"
 	RefreshInvalid         = "REFRESH_INVALID"
 	InviteLimitReached     = "INVITE_LIMIT_REACHED"
+	InviteInvalidOrExpired = "INVITE_INVALID_OR_EXPIRED"
+	EmailAlreadyExists     = "EMAIL_ALREADY_EXISTS"
 	InsufficientBalance    = "INSUFFICIENT_BALANCE"
 	UserNotFound           = "USER_NOT_FOUND"
 	RequestNotFound        = "REQUEST_NOT_FOUND"

pkg/errors/errors.go

@@ -51,6 +51,14 @@ func NewInternalError(code, message string, err error) *AppError {
 	}
 }
 
+func IsBusinessError(err error, code string) bool {
+	var appErr *AppError
+	if !errors.As(err, &appErr) {
+		return false
+	}
+	return appErr.Type == BusinessError && appErr.Code == code
+}
+
 func ToGRPCError(err error, zapLogger *zap.Logger, method string) error {
 	if err == nil {
 		return nil
@@ -85,8 +93,10 @@ func ToGRPCError(err error, zapLogger *zap.Logger, method string) error {
 		return status.Error(codes.Unauthenticated, appErr.Message)
 	case InviteLimitReached:
 		return status.Error(codes.ResourceExhausted, appErr.Message)
-	case InsufficientBalance:
+	case InsufficientBalance, InviteInvalidOrExpired:
 		return status.Error(codes.FailedPrecondition, appErr.Message)
+	case EmailAlreadyExists:
+		return status.Error(codes.AlreadyExists, appErr.Message)
 	case UserNotFound, RequestNotFound:
 		return status.Error(codes.NotFound, appErr.Message)
 	default: