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event.go
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event.go
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// 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 warehouse
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/warehouse/v1"
)
type EventOrderMetadata struct {
CustomerId string
ItemsPrice float32
TotalPrice float32
}
func PrepareStockCreatedEvent(productStock *pb.ProductStock) ([]byte, string, error) {
topic := messaging.Warehouse_Stock_Created_Topic
event := &eventspb.StockCreatedEvent{
Revision: 1,
ProductId: productStock.ProductId,
Quantity: productStock.Quantity,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockAddedEvent(productId string, amount int32, reservationId *string) ([]byte, string, error) {
topic := messaging.Warehouse_Stock_Added_Topic
event := &eventspb.StockAddedEvent{
Revision: 1,
ProductId: productId,
Amount: amount,
ReservationId: reservationId,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockRemovedEvent(productId string, amount int32, reservationId *string) ([]byte, string, error) {
topic := messaging.Warehouse_Stock_Removed_Topic
event := &eventspb.StockRemovedEvent{
Revision: 1,
ProductId: productId,
Amount: amount,
ReservationId: reservationId,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockReservationEvent_Failed(orderId string, orderMetadata EventOrderMetadata, insufficientStockProductIds []string) ([]byte, string, error) {
topic := messaging.Warehouse_Reservation_Failed_Topic
event := &eventspb.StockReservationEvent{
Revision: 1,
Type: eventspb.StockReservationEvent_TYPE_INSUFFICIENT_STOCK,
OrderId: orderId,
OrderMetadata: &eventspb.StockReservationEvent_OrderMetadata{
CustomerId: orderMetadata.CustomerId,
ItemsPrice: orderMetadata.ItemsPrice,
TotalPrice: orderMetadata.TotalPrice,
},
InsufficientStock: insufficientStockProductIds,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockReservationEvent_Reserved(orderId string, orderMetadata EventOrderMetadata, reservationId string, reservationStock map[string]int32) ([]byte, string, error) {
topic := messaging.Warehouse_Reservation_Reserved_Topic
event := &eventspb.StockReservationEvent{
Revision: 1,
Type: eventspb.StockReservationEvent_TYPE_STOCK_RESERVED,
OrderId: orderId,
OrderMetadata: &eventspb.StockReservationEvent_OrderMetadata{
CustomerId: orderMetadata.CustomerId,
ItemsPrice: orderMetadata.ItemsPrice,
TotalPrice: orderMetadata.TotalPrice,
},
ReservationId: reservationId,
ReservationStock: reservationStock,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockReservationEvent_Returned(orderId string, reservationId string, reservedStock []*pb.ReservationStock) ([]byte, string, error) {
reservationStock := make(map[string]int32)
for _, item := range reservedStock {
reservationStock[item.ProductId] = item.Quantity
}
topic := messaging.Warehouse_Reservation_Returned_Topic
event := &eventspb.StockReservationEvent{
Revision: 1,
Type: eventspb.StockReservationEvent_TYPE_STOCK_RESERVED,
OrderId: orderId,
ReservationId: reservationId,
ReservationStock: reservationStock,
}
return messaging.MarshalEvent(event, topic)
}
func PrepareStockReservationEvent_Consumed(orderId string, reservationId string, reservedStock []*pb.ReservationStock) ([]byte, string, error) {
reservationStock := make(map[string]int32)
for _, item := range reservedStock {
reservationStock[item.ProductId] = item.Quantity
}
topic := messaging.Warehouse_Reservation_Consumed_Topic
event := &eventspb.StockReservationEvent{
Revision: 1,
Type: eventspb.StockReservationEvent_TYPE_STOCK_CONSUMED,
OrderId: orderId,
ReservationId: reservationId,
ReservationStock: reservationStock,
}
return messaging.MarshalEvent(event, topic)
}