checkout

api-tests/cart.http

@@ -23,7 +23,7 @@ DELETE https://cart.tornberg.me/api/12345/1
 
 ### Set delivery
 
-POST https://cart.tornberg.me/api/12345/delivery
+POST https://cart.tornberg.me/api/1002/delivery
 Content-Type: application/json
 
 {

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)

cart-grain_test.go

@@ -16,6 +16,13 @@ func GetMessage(t uint16, data interface{}) *Message {
 	}
 }
 
+func TestTaxAmount(t *testing.T) {
+	taxAmount := GetTaxAmount(12500, 2500)
+	if taxAmount != 2500 {
+		t.Errorf("Expected 2500, got %d\n", taxAmount)
+	}
+}
+
 func TestAddToCartShortCut(t *testing.T) {
 	grain, err := spawn(ToCartId("kalle"))
 	if err != nil {

go.mod

@@ -11,6 +11,7 @@ require (
 )
 
 require (
+	github.com/Flaconi/go-klarna v0.0.0-20230216165926-e2f708c721d9 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect

go.sum

@@ -1,3 +1,5 @@
+github.com/Flaconi/go-klarna v0.0.0-20230216165926-e2f708c721d9 h1:U5gu3M9/khqtvgg6iRKo0+nxGEfPHWFHRlKrbZvFxIY=
+github.com/Flaconi/go-klarna v0.0.0-20230216165926-e2f708c721d9/go.mod h1:+LVFV9FXH5cwN1VcU30WcNYRs5FhkEtL7/IqqTD42cU=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=

message-types.go

@@ -3,10 +3,11 @@ package main
 const (
 	AddRequestType = 1
 	AddItemType    = 2
-	//AddDeliveryType    = 3
+
-	RemoveItemType     = 4
+	RemoveItemType          = 4
-	RemoveDeliveryType = 5
+	RemoveDeliveryType      = 5
-	ChangeQuantityType = 6
+	ChangeQuantityType      = 6
-	SetDeliveryType    = 7
+	SetDeliveryType         = 7
-	SetPickupPointType = 8
+	SetPickupPointType      = 8
+	CreateCheckoutOrderType = 9
 )

packet.go

@@ -6,6 +6,7 @@ const (
 	ResponseBody              = FrameType(0x03)
 	RemoteGetStateReply       = FrameType(0x04)
 	RemoteHandleMutationReply = FrameType(0x05)
+	RemoteCreateOrderReply    = FrameType(0x06)
 )
 
 // type CartPacket struct {

pool-server.go

@@ -1,9 +1,11 @@
 package main
 
 import (
+	"bytes"
 	"encoding/json"
 	"log"
 	"net/http"
+	"os"
 	"strconv"
 
 	messages "git.tornberg.me/go-cart-actor/proto"
@@ -198,6 +200,50 @@ func (s *PoolServer) HandleAddRequest(w http.ResponseWriter, r *http.Request) er
 	return s.WriteResult(w, reply)
 }
 
+var (
+	APIUsername = os.Getenv("KLARNA_API_USERNAME")
+	APIPassword = os.Getenv("KLARNA_API_PASSWORD")
+)
+
+func (s *PoolServer) HandleCheckout(w http.ResponseWriter, r *http.Request) error {
+	id := r.PathValue("id")
+
+	reply, err := s.pool.Process(ToCartId(id), Message{
+		Type: CreateCheckoutOrderType,
+		Content: &messages.CreateCheckoutOrder{
+			Terms:        "https://tornberg.me/terms",
+			Checkout:     "https://tornberg.me/checkout",
+			Confirmation: "https://tornberg.me/confirmation",
+			Push:         "https://cart.tornberg.me/push",
+		},
+	})
+	if err != nil {
+		return err
+	}
+	if reply.StatusCode != 200 {
+		return s.WriteResult(w, reply)
+	}
+
+	req, err := http.NewRequest("POST", "https://api.playground.klarna.com/checkout/v3/orders", bytes.NewReader(reply.Payload))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Add("Content-Type", "application/json")
+	req.SetBasicAuth(APIUsername, APIPassword)
+
+	res, err := http.DefaultClient.Do(req)
+	if nil != err {
+		return err
+	}
+
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(res.Body)
+
+	w.Write(buf.Bytes())
+	return nil
+}
+
 func (s *PoolServer) Serve() *http.ServeMux {
 	mux := http.NewServeMux()
 	mux.HandleFunc("GET /{id}", ErrorHandler(s.HandleGet))
@@ -208,5 +254,7 @@ func (s *PoolServer) Serve() *http.ServeMux {
 	mux.HandleFunc("POST /{id}/delivery", ErrorHandler(s.HandleSetDelivery))
 	mux.HandleFunc("DELETE /{id}/delivery/{deliveryId}", ErrorHandler(s.HandleRemoveDelivery))
 	mux.HandleFunc("PUT /{id}/delivery/{deliveryId}/pickupPoint", ErrorHandler(s.HandleSetPickupPoint))
+	mux.HandleFunc("GET /{id}/checkout", ErrorHandler(s.HandleCheckout))
+
 	return mux
 }

proto/messages.pb.go

@@ -304,6 +304,10 @@ type SetDelivery struct {
 	Provider    string       `protobuf:"bytes,1,opt,name=Provider,proto3" json:"provider,omitempty"`
 	Items       []int64      `protobuf:"varint,2,rep,packed,name=Items,proto3" json:"items,omitempty"`
 	PickupPoint *PickupPoint `protobuf:"bytes,3,opt,name=PickupPoint,proto3,oneof" json:"pickupPoint,omitempty"`
+	Country     string       `protobuf:"bytes,4,opt,name=Country,proto3" json:"country,omitempty"`
+	Zip         string       `protobuf:"bytes,5,opt,name=Zip,proto3" json:"zip,omitempty"`
+	Address     *string      `protobuf:"bytes,6,opt,name=Address,proto3,oneof" json:"address,omitempty"`
+	City        *string      `protobuf:"bytes,7,opt,name=City,proto3,oneof" json:"city,omitempty"`
 }
 
 func (x *SetDelivery) Reset() {
@@ -357,6 +361,34 @@ func (x *SetDelivery) GetPickupPoint() *PickupPoint {
 	return nil
 }
 
+func (x *SetDelivery) GetCountry() string {
+	if x != nil {
+		return x.Country
+	}
+	return ""
+}
+
+func (x *SetDelivery) GetZip() string {
+	if x != nil {
+		return x.Zip
+	}
+	return ""
+}
+
+func (x *SetDelivery) GetAddress() string {
+	if x != nil && x.Address != nil {
+		return *x.Address
+	}
+	return ""
+}
+
+func (x *SetDelivery) GetCity() string {
+	if x != nil && x.City != nil {
+		return *x.City
+	}
+	return ""
+}
+
 type SetPickupPoint struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -580,6 +612,75 @@ func (x *RemoveDelivery) GetId() int64 {
 	return 0
 }
 
+type CreateCheckoutOrder struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Terms        string `protobuf:"bytes,1,opt,name=Terms,proto3" json:"terms,omitempty"`
+	Checkout     string `protobuf:"bytes,2,opt,name=Checkout,proto3" json:"checkout,omitempty"`
+	Confirmation string `protobuf:"bytes,3,opt,name=Confirmation,proto3" json:"confirmation,omitempty"`
+	Push         string `protobuf:"bytes,4,opt,name=Push,proto3" json:"push,omitempty"`
+}
+
+func (x *CreateCheckoutOrder) Reset() {
+	*x = CreateCheckoutOrder{}
+	mi := &file_messages_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *CreateCheckoutOrder) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*CreateCheckoutOrder) ProtoMessage() {}
+
+func (x *CreateCheckoutOrder) ProtoReflect() protoreflect.Message {
+	mi := &file_messages_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use CreateCheckoutOrder.ProtoReflect.Descriptor instead.
+func (*CreateCheckoutOrder) Descriptor() ([]byte, []int) {
+	return file_messages_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *CreateCheckoutOrder) GetTerms() string {
+	if x != nil {
+		return x.Terms
+	}
+	return ""
+}
+
+func (x *CreateCheckoutOrder) GetCheckout() string {
+	if x != nil {
+		return x.Checkout
+	}
+	return ""
+}
+
+func (x *CreateCheckoutOrder) GetConfirmation() string {
+	if x != nil {
+		return x.Confirmation
+	}
+	return ""
+}
+
+func (x *CreateCheckoutOrder) GetPush() string {
+	if x != nil {
+		return x.Push
+	}
+	return ""
+}
+
 var File_messages_proto protoreflect.FileDescriptor
 
 var file_messages_proto_rawDesc = []byte{
@@ -612,7 +713,7 @@ var file_messages_proto_rawDesc = []byte{
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@@ -620,41 +721,57 @@ var file_messages_proto_rawDesc = []byte{
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+	0x33,
 }
 
 var (
@@ -669,16 +786,17 @@ func file_messages_proto_rawDescGZIP() []byte {
 	return file_messages_proto_rawDescData
 }
 
-var file_messages_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_messages_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
 var file_messages_proto_goTypes = []any{
-	(*AddRequest)(nil),     // 0: messages.AddRequest
+	(*AddRequest)(nil),          // 0: messages.AddRequest
-	(*AddItem)(nil),        // 1: messages.AddItem
+	(*AddItem)(nil),             // 1: messages.AddItem
-	(*RemoveItem)(nil),     // 2: messages.RemoveItem
+	(*RemoveItem)(nil),          // 2: messages.RemoveItem
-	(*ChangeQuantity)(nil), // 3: messages.ChangeQuantity
+	(*ChangeQuantity)(nil),      // 3: messages.ChangeQuantity
-	(*SetDelivery)(nil),    // 4: messages.SetDelivery
+	(*SetDelivery)(nil),         // 4: messages.SetDelivery
-	(*SetPickupPoint)(nil), // 5: messages.SetPickupPoint
+	(*SetPickupPoint)(nil),      // 5: messages.SetPickupPoint
-	(*PickupPoint)(nil),    // 6: messages.PickupPoint
+	(*PickupPoint)(nil),         // 6: messages.PickupPoint
-	(*RemoveDelivery)(nil), // 7: messages.RemoveDelivery
+	(*RemoveDelivery)(nil),      // 7: messages.RemoveDelivery
+	(*CreateCheckoutOrder)(nil), // 8: messages.CreateCheckoutOrder
 }
 var file_messages_proto_depIdxs = []int32{
 	6, // 0: messages.SetDelivery.PickupPoint:type_name -> messages.PickupPoint
@@ -704,7 +822,7 @@ func file_messages_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_messages_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   8,
+			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

proto/messages.proto

@@ -62,3 +62,10 @@ message PickupPoint {
 message RemoveDelivery {
 		int64 Id = 1;
 }
+
+message CreateCheckoutOrder {
+	string Terms = 1;
+	string Checkout = 2;
+	string Confirmation = 3;
+	string Push = 4;
+}