farmstar-survey-backend/pkg/custodial/custodial.go

package custodial

import (
	"context"

	"github.com/carlmjohnson/requests"
)

type (
	CustodialClient struct {
		endpoint string
	}

	SignTransferPayload struct {
		Amount         uint   `json:"amount"`
		From           string `json:"from"`
		To             string `json:"to"`
		VoucherAddress string `json:"voucherAddress"`
	}

	CustodialResponse struct {
		Ok     bool `json:"ok"`
		Result struct {
			TrackingId string `json:"trackingId"`
		} `json:"result"`
	}
)

func New(endpoint string) *CustodialClient {
	return &CustodialClient{
		endpoint: endpoint,
	}
}

func (cc *CustodialClient) SignTransfer(ctx context.Context, payload SignTransferPayload) (string, error) {
	var resp CustodialResponse

	if err := requests.
		URL(cc.endpoint).
		BodyJSON(&payload).
		ToJSON(&resp).
		Fetch(ctx); err != nil {
		return "", err
	}

	return resp.Result.TrackingId, nil
}