add cancel

pkg/checkout/mutation-context.go

@@ -27,6 +27,7 @@ func NewCheckoutMutationRegistry(ctx *CheckoutMutationContext) actor.MutationReg
 		actor.NewMutation(HandleSetPickupPoint),
 		actor.NewMutation(HandleRemoveDelivery),
 		actor.NewMutation(HandleContactDetailsUpdated),
+		actor.NewMutation(HandlePaymentCancelled),
 	)
 	return reg
 }

pkg/checkout/mutation_cancel_payment.go

@@ -0,0 +1,30 @@
+package checkout
+
+import (
+	"errors"
+	"slices"
+
+	messages "git.k6n.net/go-cart-actor/proto/checkout"
+)
+
+func HandlePaymentCancelled(g *CheckoutGrain, m *messages.PaymentDeclined) error {
+
+	payment, found := g.FindPayment(m.PaymentId)
+	if !found {
+		return ErrPaymentNotFound
+	}
+	if payment.CompletedAt != nil {
+		return errors.New("payment already completed")
+	}
+	g.PaymentInProgress--
+	g.AmountInCentsStarted -= payment.Amount
+	g.Payments = removePayment(g.Payments, payment.PaymentId)
+
+	return nil
+}
+
+func removePayment(payment []*Payment, s string) []*Payment {
+	return slices.DeleteFunc(payment, func(p *Payment) bool {
+		return p.PaymentId == s
+	})
+}

pkg/checkout/mutation_delivery.go

@@ -11,13 +11,21 @@ func asPickupPoint(p *messages.PickupPoint, deliveryId uint32) *PickupPoint {
 	if p == nil {
 		return nil
 	}
+	if p.Address == nil {
+		return &PickupPoint{
+			Id:         p.Id,
+			Name:       p.Name,
+			DeliveryId: deliveryId,
+		}
+	}
 	return &PickupPoint{
-		Id:      p.Id,
-		Name:    p.Name,
-		Address: p.Address,
-		City:    p.City,
-		Country: p.Country,
-		Zip:     p.Zip,
+		DeliveryId: deliveryId,
+		Id:         p.Id,
+		Name:       p.Name,
+		Address:    &p.Address.AddressLine1,
+		City:       &p.Address.City,
+		Zip:        &p.Address.Zip,
+		Country:    &p.Address.Country,
 	}
 }
 

pkg/checkout/mutation_set_pickup_point.go

@@ -36,14 +36,7 @@ func HandleSetPickupPoint(g *CheckoutGrain, m *messages.SetPickupPoint) error {
 
 	for _, d := range g.Deliveries {
 		if d.Id == uint32(m.DeliveryId) {
-			d.PickupPoint = &PickupPoint{
-				Id:      m.PickupPoint.Id,
-				Name:    m.PickupPoint.Name,
-				Address: m.PickupPoint.Address,
-				City:    m.PickupPoint.City,
-				Zip:     m.PickupPoint.Zip,
-				Country: m.PickupPoint.Country,
-			}
+			d.PickupPoint = asPickupPoint(m.PickupPoint, d.Id)
 			return nil
 		}
 	}