[hw-3] loms service

cart/internal/clients/loms/service.go

@@ -0,0 +1,56 @@
+package loms
+
+import (
+	"context"
+	"fmt"
+
+	"route256/cart/internal/domain/entity"
+	"route256/cart/internal/domain/model"
+
+	pbLoms "route256/pkg/api/loms/v1"
+)
+
+type Service struct {
+	grpcClient pbLoms.LOMSClient
+}
+
+func NewLomsService(grpcClient pbLoms.LOMSClient) *Service {
+	return &Service{
+		grpcClient: grpcClient,
+	}
+}
+
+func (s *Service) OrderCreate(ctx context.Context, cart *model.Cart) (int64, error) {
+	items := make([]*pbLoms.OrderItem, len(cart.Items))
+	for i, item := range cart.Items {
+		items[i] = &pbLoms.OrderItem{
+			Sku:   int64(item.Product.Sku),
+			Count: item.Count,
+		}
+	}
+
+	req := &pbLoms.OrderCreateRequest{
+		UserId: int64(cart.UserID),
+		Items:  items,
+	}
+
+	resp, err := s.grpcClient.OrderCreate(ctx, req)
+	if err != nil {
+		return 0, fmt.Errorf("grpcClient.OrderCreate: %w", err)
+	}
+
+	return resp.OrderId, nil
+}
+
+func (s *Service) StocksInfo(ctx context.Context, sku entity.Sku) (uint32, error) {
+	req := &pbLoms.StocksInfoRequest{
+		Sku: int64(sku),
+	}
+
+	resp, err := s.grpcClient.StocksInfo(ctx, req)
+	if err != nil {
+		return 0, fmt.Errorf("grpcClient.StocksInfo: %w", err)
+	}
+
+	return resp.Count, nil
+}