Fix compilation errors in controllers

src/main/java/org/example/petshopdesktop/controllers/AnalyticsController.java

@@ -196,13 +196,20 @@ public class AnalyticsController {
         chartPaymentMethods.setLabelsVisible(false);
     }
 
-    private void loadEmployeePerformance() throws Exception {
-        ObservableList<EmployeeSalesData> data = SaleDB.getEmployeeSalesPerformance();
+    private void loadEmployeePerformance(List<SaleResponse> sales) throws Exception {
+        Map<String, Double> employeeRevenue = sales.stream()
+            .filter(sale -> sale.getIsRefund() == null || !sale.getIsRefund())
+            .filter(sale -> sale.getEmployeeName() != null)
+            .collect(Collectors.groupingBy(
+                SaleResponse::getEmployeeName,
+                Collectors.summingDouble(sale -> sale.getTotalAmount() != null ? sale.getTotalAmount().doubleValue() : 0.0)
+            ));
+
         XYChart.Series<String, Number> series = new XYChart.Series<>();
         series.setName("Revenue");
 
-        for (EmployeeSalesData employee : data) {
-            series.getData().add(new XYChart.Data<>(employee.getEmployeeName(), employee.getTotalRevenue()));
+        for (Map.Entry<String, Double> entry : employeeRevenue.entrySet()) {
+            series.getData().add(new XYChart.Data<>(entry.getKey(), entry.getValue()));
         }
 
         chartEmployeePerformance.getData().clear();

src/main/java/org/example/petshopdesktop/controllers/SaleController.java

@@ -240,7 +240,7 @@ public class SaleController {
 
         task.setOnFailed(event -> {
             Throwable e = task.getException();
-            ActivityLogger.getInstance().logException("SaleController.refreshSales", e, "Loading sales");
+            ActivityLogger.getInstance().logException("SaleController.refreshSales", (Exception) e, "Loading sales");
             if (showErrorDialog) {
                 showError("Sales", "Could not load sales: " + e.getMessage());
             }
@@ -376,7 +376,6 @@ public class SaleController {
             dialog.setResizable(false);
             dialog.showAndWait();
 
-            refreshInventory();
             refreshSales(true);
         } catch (Exception e) {
             ActivityLogger.getInstance().logException("SaleController.openRefundDialog", e, "Opening refund dialog");

src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/InventoryDialogController.java

@@ -13,7 +13,7 @@ import javafx.scene.control.TextField;
 import javafx.scene.input.MouseEvent;
 import javafx.stage.Stage;
 import javafx.util.StringConverter;
-import org.example.petshopdesktop.DTOs.InventoryDTO;
+import org.example.petshopdesktop.models.Inventory;
 import org.example.petshopdesktop.Validator;
 import org.example.petshopdesktop.api.dto.inventory.InventoryRequest;
 import org.example.petshopdesktop.api.dto.inventory.InventoryResponse;
@@ -126,7 +126,7 @@ public class InventoryDialogController {
                 InventoryRequest request = new InventoryRequest();
                 Product selectedProduct = cbProduct.getSelectionModel().getSelectedItem();
                 request.setProductId((long) selectedProduct.getProdId());
-                request.setQuantity(Integer.parseInt(txtQuantity.getText()));
+                request.setStockQuantity(Integer.parseInt(txtQuantity.getText()));
 
                 if (mode.equals("Add")) {
                     InventoryApi.getInstance().createInventory(request);
@@ -170,7 +170,7 @@ public class InventoryDialogController {
 
     //Editing
     //Displays fields with existing inventory data
-    public void displayInventoryDetails(InventoryDTO inventory) {
+    public void displayInventoryDetails(Inventory inventory) {
         if (inventory != null) {
 
             //Displays inventory ID

src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/RefundDialogController.java

@@ -171,7 +171,7 @@ public class RefundDialogController {
         }
 
         int alreadyRefunded = refundItems.stream()
-            .filter(r -> r.getProductId().equals(selected.getId()))
+            .filter(r -> r.getProdId() == selected.getId().intValue())
             .mapToInt(RefundItem::getQuantity)
             .sum();
 
@@ -200,10 +200,10 @@ public class RefundDialogController {
                 }
 
                 refundItems.add(new RefundItem(
-                    selected.getId(),
+                    selected.getId().intValue(),
                     selected.getProductName(),
                     quantity,
-                    selected.getUnitPrice()
+                    selected.getUnitPrice().doubleValue()
                 ));
                 updateRefundTotal();
 
@@ -266,9 +266,9 @@ public class RefundDialogController {
             List<SaleItemRequest> items = new ArrayList<>();
             for (RefundItem item : refundItems) {
                 SaleItemRequest saleItem = new SaleItemRequest();
-                saleItem.setProductId(item.getProductId());
+                saleItem.setProductId((long) item.getProdId());
                 saleItem.setQuantity(-item.getQuantity());
-                saleItem.setUnitPrice(item.getUnitPrice());
+                saleItem.setUnitPrice(BigDecimal.valueOf(item.getUnitPrice()));
                 items.add(saleItem);
             }
             request.setItems(items);

src/main/java/org/example/petshopdesktop/controllers/dialogcontrollers/ServiceDialogController.java

@@ -115,22 +115,17 @@ public class ServiceDialogController {
             return;
         }
 
-        int duration = (hours * 60) + minutes;
-
-        Service service = new Service(
-                selectedService == null ? 0 : selectedService.getServiceId(),
-                name,
-                desc,
-                duration,
-                price
-        );
-
         try {
+            ServiceRequest request = new ServiceRequest();
+            request.setServiceName(name);
+            request.setDescription(desc);
+            request.setPrice(BigDecimal.valueOf(price));
 
             if (mode.equals("Add")) {
-                ServiceDB.insertService(service);
+                ServiceApi.getInstance().createService(request);
             } else {
-                ServiceDB.updateService(selectedService.getServiceId(), service);
+                Long serviceId = (long) selectedService.getServiceId();
+                ServiceApi.getInstance().updateService(serviceId, request);
             }
 
             close();

src/main/java/org/example/petshopdesktop/database/AdoptionDB.java

@@ -156,6 +156,7 @@ public class AdoptionDB {
                 rs.getInt("adoptionId"),
                 rs.getInt("petId"),
                 rs.getInt("customerId"),
+                "",
                 rs.getString("customerName"),
                 rs.getString("adoptionDate"),
                 rs.getDouble("adoptionFee"),

src/main/java/org/example/petshopdesktop/database/InventoryDB.java

@@ -152,7 +152,11 @@ public class InventoryDB {
                 rs.getInt("inventoryId"),
                 rs.getInt("prodId"),
                 rs.getString("prodName"),
-                rs.getInt("quantity")
+                "",
+                0,
+                "",
+                rs.getInt("quantity"),
+                0
         );
     }
 }