make dojo decline payment in case of signature required

cmd/hardlink/main.go

@@ -34,7 +34,7 @@ import (
 )
 
 const (
-	buildVersion     = "1.3.1"
+	buildVersion     = "1.3.2"
 	serviceName      = "hardlink"
 	pollingFrequency = 8 * time.Second
 )

internal/dojo/client.go

@@ -154,6 +154,8 @@ func (c *Client) waitForTerminalSession(ctx context.Context, terminalSessionID s
 	ticker := time.NewTicker(time.Second)
 	defer ticker.Stop()
 
+	signatureRejected := false
+
 	for {
 		session, err := c.getTerminalSession(ctx, terminalSessionID)
 		if err != nil {
@@ -163,13 +165,28 @@ func (c *Client) waitForTerminalSession(ctx context.Context, terminalSessionID s
 		log.Println("session status:", session.Status)
 
 		switch strings.ToLower(session.Status) {
-		case types.ResultInitiateRequested, types.ResultInitiated, types.ResultAuthorized,
-			types.ResultCancelRequested, types.ResultSignatureRequired:
-			// Still processing. For this integration payment intents use captureMode Auto,
-			// so Authorized is expected to continue to Captured.
+		case types.ResultInitiateRequested, types.ResultInitiated, types.ResultAuthorized, types.ResultCancelRequested:
 
-		case types.ResultCaptured, types.ResultCancelled, types.ResultCanceled, types.ResultDeclined, types.ResultExpired,
-			types.ResultSignatureAccepted, types.ResultSignatureRejected /*, types.ResultSignatureRequired*/ :
+		case types.ResultSignatureRequired:
+			if !signatureRejected {
+				rejectedSession, err := c.rejectSignature(ctx, terminalSessionID)
+				if err != nil {
+					return nil, err
+				}
+
+				signatureRejected = true
+
+				if rejectedSession != nil {
+					switch strings.ToLower(rejectedSession.Status) {
+					case types.ResultCaptured, types.ResultCancelled, types.ResultCanceled, types.ResultDeclined,
+						types.ResultExpired, types.ResultSignatureAccepted, types.ResultSignatureRejected:
+						return rejectedSession, nil
+					}
+				}
+			}
+
+		case types.ResultCaptured, types.ResultCancelled, types.ResultCanceled, types.ResultDeclined,
+			types.ResultExpired, types.ResultSignatureAccepted, types.ResultSignatureRejected:
 			return session, nil
 
 		default:
@@ -184,6 +201,21 @@ func (c *Client) waitForTerminalSession(ctx context.Context, terminalSessionID s
 	}
 }
 
+func (c *Client) rejectSignature(ctx context.Context, terminalSessionID string) (*terminalSessionResponse, error) {
+	payload := signatureVerificationRequest{
+		Accepted: false,
+	}
+
+	var response terminalSessionResponse
+	path := "/terminal-sessions/" + url.PathEscape(terminalSessionID) + "/signature"
+
+	if err := c.doJSON(ctx, http.MethodPut, path, payload, true, &response); err != nil {
+		return nil, fmt.Errorf("reject Dojo signature verification: %w", err)
+	}
+
+	return &response, nil
+}
+
 func (c *Client) getTerminalSession(ctx context.Context, terminalSessionID string) (*terminalSessionResponse, error) {
 	var response terminalSessionResponse
 	path := "/terminal-sessions/" + url.PathEscape(terminalSessionID)
@@ -249,7 +281,10 @@ func (c *Client) baseResult(req paymentsvc.SaleRequest, details *paymentDetails)
 	result.CardNumber = details.Card.CardNumber
 	result.CardType = details.Card.CardType
 	result.ExpiryDate = details.Card.ExpiryDate
-	result.LastFourDigits = details.Card.CardNumber
+	result.LastFourDigits = details.Card.Last4PAN
+	if result.LastFourDigits == "" {
+		result.LastFourDigits = lastFour(details.Card.CardNumber)
+	}
 
 	return result
 }

internal/dojo/types.go

@@ -25,6 +25,10 @@ type terminalSessionSale struct {
 	PaymentIntentID string `json:"paymentIntentId"`
 }
 
+type signatureVerificationRequest struct {
+	Accepted bool `json:"accepted"`
+}
+
 type terminalSessionResponse struct {
 	ID             string          `json:"id"`
 	Status         string          `json:"status"`

release notes.md

@@ -2,6 +2,9 @@
 
 builtVersion is a const in main.go
 
+#### 1.3.2 - 20 July 2026
+make dojo decline payment in case of signature required
+
 #### 1.3.1 - 17 July 2026
 added receipt printing functionality to the Dojo and Paybridge payment flow