checkout

cart-grain.go

@@ -8,6 +8,7 @@ import (
 	"time"
 
 	messages "git.tornberg.me/go-cart-actor/proto"
+	klarna "github.com/Flaconi/go-klarna"
 )
 
 type CartId [16]byte
@@ -221,6 +222,11 @@ func (c *CartGrain) FindItemWithSku(sku string) (*CartItem, bool) {
 	return nil, false
 }
 
+func GetTaxAmount(total int, tax int) int {
+	taxD := 10000 / float64(tax)
+	return int(float64(total) / float64((1 + taxD)))
+}
+
 func (c *CartGrain) HandleMessage(message *Message, isReplay bool) (*FrameWithPayload, error) {
 	if message.TimeStamp == nil {
 		now := time.Now().Unix()
@@ -384,7 +390,52 @@ func (c *CartGrain) HandleMessage(message *Message, isReplay bool) (*FrameWithPa
 					break
 				}
 			}
-
+		}
+	case CreateCheckoutOrderType:
+		msg, ok := message.Content.(*messages.CreateCheckoutOrder)
+		if !ok {
+			err = fmt.Errorf("expected CreateCheckoutOrder")
+		} else {
+			orderLines := make([]*klarna.Line, 0, len(c.Items))
+			totalTax := 0
+			for _, item := range c.Items {
+				total := int(item.Price) * item.Quantity
+				taxAmount := GetTaxAmount(total, item.Tax)
+				totalTax += taxAmount
+				orderLines = append(orderLines, &klarna.Line{
+					Type:           "physical",
+					Reference:      item.Sku,
+					Name:           item.Name,
+					Quantity:       item.Quantity,
+					UnitPrice:      int(item.Price),
+					TaxRate:        int(item.Tax),
+					QuantityUnit:   "st",
+					TotalAmount:    total,
+					TotalTaxAmount: taxAmount,
+					ImageURL:       item.Image,
+				})
+			}
+			order := klarna.CheckoutOrder{
+				PurchaseCountry:    "SE",
+				PurchaseCurrency:   "SEK",
+				Locale:             "sv-se",
+				OrderAmount:        int(c.TotalPrice),
+				OrderTaxAmount:     totalTax,
+				OrderLines:         orderLines,
+				MerchantReference1: c.Id.String(),
+				MerchantURLS: &klarna.CheckoutMerchantURLS{
+					Terms:        msg.Terms,
+					Checkout:     msg.Checkout,
+					Confirmation: msg.Confirmation,
+					Push:         msg.Push,
+				},
+			}
+			orderPayload, err := json.Marshal(order)
+			if err != nil {
+				return nil, err
+			}
+			result := MakeFrameWithPayload(RemoteCreateOrderReply, 200, orderPayload)
+			return &result, nil
 		}
 	default:
 		err = fmt.Errorf("unknown message type %d", message.Type)