логика заказов

ComputerHardwareStore/ComputerHardwareStoreBusinessLogic/BusinessLogic/OrderLogic.cs

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+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.BusinessLogicsContracts;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.StorageContracts;
+using ComputerHardwareStoreContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+
+namespace ComputerHardwareStoreBusinessLogic.BusinessLogic
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IOrderStorage _orderStorage;
+
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        {
+            _logger = logger;
+            _orderStorage = orderStorage;
+        }
+
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. OrderId:{Id}", model?.Id);
+            var list = model == null ? _orderStorage.GetFullList() : _orderStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public bool CreateOrder(OrderBindingModel model)
+        {
+            CheckModel(model);
+
+            if (model.Status != OrderStatus.Неизвестен)
+                return false;
+            model.Status = OrderStatus.Принят;
+
+            if (_orderStorage.Insert(model) == null)
+            {
+                model.Status = OrderStatus.Неизвестен;
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool TakeOrderInWork(OrderBindingModel model)
+        {
+            return ToNextStatus(model, OrderStatus.Выполняется);
+        }
+
+        public bool FinishOrder(OrderBindingModel model)
+        {
+            return ToNextStatus(model, OrderStatus.Готов);
+        }
+
+        public bool DeliveryOrder(OrderBindingModel model)
+        {
+            return ToNextStatus(model, OrderStatus.Выдан);
+        }
+
+        public bool ToNextStatus(OrderBindingModel model, OrderStatus orderStatus)
+        {
+            CheckModel(model, false);
+            var element = _orderStorage.GetElement(new OrderSearchModel()
+            {
+                Id = model.Id
+            });
+            if (element == null)
+            {
+                throw new ArgumentNullException(nameof(element));
+            }
+
+            model.OrderProduct = element.OrderProduct;
+            model.DateCreate = element.DateCreate;
+            model.Status = element.Status;
+            model.Cost = element.Cost;
+
+            if (model.Status != orderStatus - 1)
+            {
+                _logger.LogWarning("Status update to " + orderStatus + " operation failed");
+                return false;
+            }
+            model.Status = orderStatus;
+
+            if (_orderStorage.Update(model) == null)
+            {
+                model.Status--;
+                _logger.LogWarning("Changing status operation faled");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Цена заказа должна быть больше 0", nameof(model.Cost));
+            }
+        }
+    }
+}