cart-service/src/main/java/com/drinkool/controllers/ManagerController.java

@@ -1,7 +1,6 @@
 package com.drinkool.controllers;
 
 import com.drinkool.Role;
-import io.smallrye.mutiny.Uni;
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
 import jakarta.ws.rs.PathParam;
@@ -15,7 +14,7 @@ import org.eclipse.microprofile.rest.client.inject.RegisterRestClient;
 public interface ManagerController {
 	@GET
 	@Path(Role.Manager + "/{id}/payment-qr")
-	public Uni<Response> getManagerPaymentQr(
+	public Response getManagerPaymentQr(
 		@PathParam("id") UUID id,
 		@QueryParam("amount") Long amount,
 		@QueryParam("cartId") String cartId

cart-service/src/main/java/com/drinkool/dtos/Cart.java

@@ -15,4 +15,6 @@ public class Cart {
 	public UUID userId;
 	public UUID eateryId;
 	public List<CartItem> items;
+	public long totalAmount;
+	public String paymentQrUrl;
 }

cart-service/src/main/java/com/drinkool/dtos/CartItem.java

@@ -11,4 +11,7 @@ public class CartItem {
 
 	public String productId;
 	public Integer quantity;
+
+	public Double priceAtTimeOfAdding;
+	public Double subTotal;
 }

cart-service/src/main/java/com/drinkool/services/CartService.java

@@ -2,6 +2,7 @@ package com.drinkool.services;
 
 import com.drinkool.InternalValue;
 import com.drinkool.controllers.EateryController;
+import com.drinkool.controllers.ManagerController;
 import com.drinkool.dtos.Cart;
 import com.drinkool.dtos.CartItem;
 import io.quarkus.redis.datasource.RedisDataSource;
@@ -35,6 +36,10 @@ public class CartService {
 	@RestClient
 	EateryController eateryController;
 
+	@Inject
+	@RestClient
+	ManagerController managerController;
+
 	private final HashCommands<String, String, String> hashCommands;
 	private final ValueCommands<String, String> valueCommands;
 
@@ -67,7 +72,7 @@ public class CartService {
 						userId != null ? userId : "GUEST",
 						"_metadata_eatery",
 						eateryId.toString(),
-						"_metadata_ownerId",
+						"_metadata_eateryManagerId",
 						ownerId
 					)
 				);
@@ -90,27 +95,56 @@ public class CartService {
 	@Query("getCart")
 	public Cart getCart(@Name("cartId") UUID cartId) throws GraphQLException {
 		String key = "cart:" + cartId;
+		String priceKey = "cart_prices:" + cartId;
 
 		Map<String, String> data = hashCommands.hgetall(key);
+		Map<String, String> itemPrices = hashCommands.hgetall(priceKey);
+		String managerId = hashCommands.hget(key, "_metadata_eateryManagerId");
 
 		if (data.isEmpty()) {
 			throw new GraphQLException("NotFoundCart");
 		}
 
-		List<CartItem> items = new ArrayList<>();
+		Cart cart = new Cart();
+		cart.Id = cartId;
+		cart.eateryId = UUID.fromString(data.get("_metadata_eatery"));
+		cart.userId = UUID.fromString(data.get("_metadata_owner"));
+		cart.items = new ArrayList<>();
 
-		data.forEach((k, v) -> {
-			if (!k.startsWith("_")) {
-				items.add(new CartItem(k, Integer.parseInt(v)));
-			}
-		});
+		long total = 0;
 
-		return new Cart(
-			cartId,
-			UUID.fromString(data.get("_metadata_owner")),
-			UUID.fromString(data.get("_metadata_eatery")),
-			items
-		);
+		for (Map.Entry<String, String> entry : data.entrySet()) {
+			String field = entry.getKey();
+			if (field.startsWith("_metadata_")) continue;
+
+			Integer qty = Integer.parseInt(entry.getValue());
+			Double price = Double.parseDouble(itemPrices.getOrDefault(field, "0"));
+			Double subTotal = qty * price;
+
+			CartItem item = new CartItem();
+			item.productId = field;
+			item.quantity = qty;
+			item.priceAtTimeOfAdding = price;
+			item.subTotal = subTotal;
+
+			cart.items.add(item);
+			total += subTotal;
+		}
+		cart.totalAmount = total;
+
+		try {
+			Response response = managerController.getManagerPaymentQr(
+				UUID.fromString(managerId),
+				total,
+				cartId.toString()
+			);
+
+			cart.paymentQrUrl = response.readEntity(String.class);
+		} catch (Exception e) {
+			cart.paymentQrUrl = "";
+		}
+
+		return cart;
 	}
 
 	@Mutation("addItem")