Готово, доделано полностью

CarRepairShop/CarRepairShopBusinessLogic/ShopLogic.cs

@@ -35,9 +35,46 @@ namespace CarRepairShopBusinessLogic
 
         public bool MakeSupply(ShopSearchModel model, IRepairModel repair, int count)
         {
+            _logger.LogInformation("Try to supply shop. ShopName:{ShopName}. Id:{Id}", model.Name, model.Id);
             if (model == null)
-                return false;
+            {
-            return _shopStorage.SupplyRepair(model, repair, count);
+                _logger.LogWarning("Read operation failed");
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (repair == null)
+            {
+                _logger.LogWarning("Read operation failed");
+                throw new ArgumentNullException(nameof(repair));
+            }
+            if (count <= 0)
+            {
+                _logger.LogWarning("Read operation failed");
+                throw new ArgumentNullException("Количество должно быть положительным числом");
+            }
+            ShopViewModel curModel = ReadElement(model);
+            if (curModel == null)
+            {
+                _logger.LogWarning("Read operation failed");
+                throw new ArgumentNullException(nameof(curModel));
+            }
+            if (curModel.ShopRepairs.TryGetValue(repair.Id, out var pair))
+            {
+                curModel.ShopRepairs[repair.Id] = (pair.Item1, pair.Item2 + count);
+            }
+            else
+            {
+                curModel.ShopRepairs.Add(repair.Id, (repair, count));
+            }
+            Update(new()
+            {
+                Id = curModel.Id,
+                ShopName = curModel.ShopName,
+                DateOpen = curModel.DateOpen,
+                Address = curModel.Address,
+                ShopRepairs = curModel.ShopRepairs,
+            });
+            _logger.LogInformation("Success. RepairName:{RepairName}. Id:{Id}. Supply:{count}", repair.RepairName, repair.Id, count);
+            return true;
         }
 
         public ShopViewModel ReadElement(ShopSearchModel model)

CarRepairShop/CarRepairShopContracts/StoragesContracts/IShopStorage.cs

@@ -13,6 +13,5 @@ namespace CarRepairShopContracts.StoragesContracts
         ShopViewModel? Insert(ShopBindingModel model);
         ShopViewModel? Update(ShopBindingModel model);
         ShopViewModel? Delete(ShopBindingModel model);
-        bool SupplyRepair(ShopSearchModel model, IRepairModel repair, int Count);
     }
 }

CarRepairShop/CarRepairShopListImplement/Implements/ShopStorage.cs

@@ -100,36 +100,5 @@ namespace CarRepairShopListImplement.Implements
             }
             return null;
         }
-
-        public bool SupplyRepair(ShopSearchModel model, IRepairModel repair, int count)
-        {
-            if (model == null)
-                throw new ArgumentNullException(nameof(model));
-            if (repair == null)
-                throw new ArgumentNullException(nameof(repair));
-            if (count <= 0)
-                throw new ArgumentNullException("Количество должно быть положительным числом");
-
-            ShopViewModel curModel = GetElement(model);
-            if (curModel == null)
-                throw new ArgumentNullException(nameof(curModel));
-            if (curModel.ShopRepairs.TryGetValue(repair.Id, out var pair))
-            {
-                curModel.ShopRepairs[repair.Id] = (pair.Item1, pair.Item2 + count);
-            }
-            else
-            {
-                curModel.ShopRepairs.Add(repair.Id, (repair, count));
-            }
-            Update(new()
-            {
-                Id = curModel.Id,
-                ShopName = curModel.ShopName,
-                DateOpen = curModel.DateOpen,
-                Address = curModel.Address,
-                ShopRepairs = curModel.ShopRepairs,
-            });
-            return true;
-        }
     }
 }