alby-hub/nip47/controllers/sign_message_controller.go

package controllers

import (
	"context"

	"github.com/getAlby/go-nostr"
	"github.com/getAlby/hub/logger"
	"github.com/getAlby/hub/nip47/models"
	"github.com/sirupsen/logrus"
)

type signMessageParams struct {
	Message string `json:"message"`
}

type signMessageResponse struct {
	Message   string `json:"message"`
	Signature string `json:"signature"`
}

func (controller *nip47Controller) HandleSignMessageEvent(ctx context.Context, nip47Request *models.Request, requestEventId uint, publishResponse publishFunc) {
	signParams := &signMessageParams{}
	resp := decodeRequest(nip47Request, signParams)
	if resp != nil {
		publishResponse(resp, nostr.Tags{})
		return
	}

	logger.Logger.WithFields(logrus.Fields{
		"request_event_id": requestEventId,
	}).Info("Signing message")

	signature, err := controller.lnClient.SignMessage(ctx, signParams.Message)
	if err != nil {
		logger.Logger.WithFields(logrus.Fields{
			"request_event_id": requestEventId,
		}).WithError(err).Error("Failed to sign message")
		publishResponse(&models.Response{
			ResultType: nip47Request.Method,
			Error:      mapNip47Error(err),
		}, nostr.Tags{})
		return
	}

	responsePayload := signMessageResponse{
		Message:   signParams.Message,
		Signature: signature,
	}

	publishResponse(&models.Response{
		ResultType: nip47Request.Method,
		Result:     responsePayload,
	}, nostr.Tags{})
}