update

pkg/checkout/checkout-grain.go

@@ -100,7 +100,7 @@ type CheckoutGrain struct {
 }
 
 func NewCheckoutGrain(id uint64, cartId cart.CartId, cartVersion uint64, ts time.Time, cartState *cart.CartGrain) *CheckoutGrain {
-	return &CheckoutGrain{
+	r := &CheckoutGrain{
 		lastDeliveryId: 0,
 		lastGiftcardId: 0,
 		lastAccess:     ts,
@@ -110,9 +110,12 @@ func NewCheckoutGrain(id uint64, cartId cart.CartId, cartVersion uint64, ts time
 		CartVersion:    cartVersion,
 		Deliveries:     []*CheckoutDelivery{},
 		Payments:       []*Payment{},
-		CartState:      cartState,
-		CartTotalPrice: cartState.TotalPrice,
 	}
+	if cartState != nil {
+		r.CartState = cartState
+		r.CartTotalPrice = cartState.TotalPrice
+	}
+	return r
 }
 
 func (c *CheckoutGrain) GetId() uint64 {

pkg/checkout/mutation_initialize_checkout.go

@@ -28,17 +28,19 @@ func HandleInitializeCheckout(g *CheckoutGrain, m *messages.InitializeCheckout)
 	if m == nil {
 		return fmt.Errorf("InitializeCheckout: nil payload")
 	}
-	if m.OrderId == "" {
-		return fmt.Errorf("InitializeCheckout: missing orderId")
-	}
-	if m.CartState != nil {
+	// if g.OrderId == "" {
+	// 	return fmt.Errorf("InitializeCheckout: missing orderId")
+	// }
+	if g.CartState != nil {
 		return fmt.Errorf("InitializeCheckout: checkout already initialized")
 	}
 
 	err := json.Unmarshal(m.CartState.Value, &g.CartState)
 	if err != nil {
-		return fmt.Errorf("InitializeCheckout: failed to unmarshal cart state: %w", err)
+		return err
 	}
 
+	g.CartTotalPrice = g.CartState.TotalPrice
+
 	return nil
 }