chore: initial commit

internal/svc/shipping/event.go

@@ -0,0 +1,97 @@
+// Copyright (C) 2024 Declan Teevan
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+package shipping
+
+import (
+	"github.com/hexolan/stocklet/internal/pkg/messaging"
+	eventspb "github.com/hexolan/stocklet/internal/pkg/protogen/events/v1"
+	pb "github.com/hexolan/stocklet/internal/pkg/protogen/shipping/v1"
+)
+
+type EventOrderMetadata struct {
+	CustomerId string
+	ItemsPrice float32
+	TotalPrice float32
+}
+
+func PrepareShipmentAllocationEvent_Failed(orderId string, orderMetadata EventOrderMetadata, productQuantities map[string]int32) ([]byte, string, error) {
+	topic := messaging.Shipping_Shipment_Allocation_Topic
+	event := &eventspb.ShipmentAllocationEvent{
+		Revision: 1,
+
+		Type:    eventspb.ShipmentAllocationEvent_TYPE_FAILED,
+		OrderId: orderId,
+		OrderMetadata: &eventspb.ShipmentAllocationEvent_OrderMetadata{
+			CustomerId: orderMetadata.CustomerId,
+			ItemsPrice: orderMetadata.ItemsPrice,
+			TotalPrice: orderMetadata.TotalPrice,
+		},
+		ProductQuantities: productQuantities,
+	}
+
+	return messaging.MarshalEvent(event, topic)
+}
+
+func PrepareShipmentAllocationEvent_Allocated(orderId string, orderMetadata EventOrderMetadata, shipmentId string, productQuantities map[string]int32) ([]byte, string, error) {
+	topic := messaging.Shipping_Shipment_Allocation_Topic
+	event := &eventspb.ShipmentAllocationEvent{
+		Revision: 1,
+
+		Type:    eventspb.ShipmentAllocationEvent_TYPE_ALLOCATED,
+		OrderId: orderId,
+		OrderMetadata: &eventspb.ShipmentAllocationEvent_OrderMetadata{
+			CustomerId: orderMetadata.CustomerId,
+			ItemsPrice: orderMetadata.ItemsPrice,
+			TotalPrice: orderMetadata.TotalPrice,
+		},
+		ShipmentId:        shipmentId,
+		ProductQuantities: productQuantities,
+	}
+
+	return messaging.MarshalEvent(event, topic)
+}
+
+func PrepareShipmentAllocationEvent_AllocationReleased(orderId string, shipmentId string, shipmentItems []*pb.ShipmentItem) ([]byte, string, error) {
+	productQuantities := make(map[string]int32)
+	for _, item := range shipmentItems {
+		productQuantities[item.ProductId] = item.Quantity
+	}
+
+	topic := messaging.Shipping_Shipment_Allocation_Topic
+	event := &eventspb.ShipmentAllocationEvent{
+		Revision: 1,
+
+		Type:              eventspb.ShipmentAllocationEvent_TYPE_ALLOCATION_RELEASED,
+		OrderId:           orderId,
+		ShipmentId:        shipmentId,
+		ProductQuantities: productQuantities,
+	}
+
+	return messaging.MarshalEvent(event, topic)
+}
+
+func PrepareShipmentDispatchedEvent(orderId string, shipmentId string, productQuantities map[string]int32) ([]byte, string, error) {
+	topic := messaging.Shipping_Shipment_Dispatched_Topic
+	event := &eventspb.ShipmentDispatchedEvent{
+		Revision: 1,
+
+		OrderId:           orderId,
+		ShipmentId:        shipmentId,
+		ProductQuantities: productQuantities,
+	}
+
+	return messaging.MarshalEvent(event, topic)
+}