BlacksmithWorkshop/BlacksmithWorkshop.sln

@@ -9,6 +9,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlacksmithWorkshopDataModel
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlacksmithWorkshopContracts", "BlacksmithWorkshopContracts\BlacksmithWorkshopContracts.csproj", "{EBDA1A18-346F-4427-BC86-ED41C062A75B}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlacksmithWorkshopBusinessLogic", "BlacksmithWorkshopBusinessLogic\BlacksmithWorkshopBusinessLogic.csproj", "{B3C97222-2894-4D74-B0D7-B3BEB347081D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -27,6 +29,10 @@ Global
 		{EBDA1A18-346F-4427-BC86-ED41C062A75B}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{EBDA1A18-346F-4427-BC86-ED41C062A75B}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{EBDA1A18-346F-4427-BC86-ED41C062A75B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B3C97222-2894-4D74-B0D7-B3BEB347081D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B3C97222-2894-4D74-B0D7-B3BEB347081D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B3C97222-2894-4D74-B0D7-B3BEB347081D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B3C97222-2894-4D74-B0D7-B3BEB347081D}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

BlacksmithWorkshop/BlacksmithWorkshopBusinessLogic/BlacksmithWorkshopBusinessLogic.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

BlacksmithWorkshop/BlacksmithWorkshopBusinessLogic/BusinessLogic/ComponentLogic.cs

@@ -0,0 +1,152 @@
+using BlacksmithWorkshopContracts.BindingModels;
+using BlacksmithWorkshopContracts.BusinessLogicsContracts;
+using BlacksmithWorkshopContracts.SearchModels;
+using BlacksmithWorkshopContracts.StoragesContracts;
+using BlacksmithWorkshopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlacksmithWorkshopBusinessLogic.BusinessLogic
+{
+    //класс, реализующий логику для компонентов
+    public class ComponentLogic : IComponentLogic
+    {
+        private readonly ILogger _logger;
+
+        private readonly IComponentStorage _componentStorage;
+
+        //конструктор
+        public ComponentLogic(ILogger<ComponentLogic> logger, IComponentStorage componentStorage)
+        {
+            _logger = logger;
+            _componentStorage = componentStorage;
+        }
+
+        //вывод отфильтрованного списка компонентов
+        public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComponentName:{ComponentName}. Id:{Id}", model?.ComponentName, model?.Id);
+
+            //list хранит весь список в случае, если model пришло со значением null на вход метода
+            var list = model == null ? _componentStorage.GetFullList() : _componentStorage.GetFilteredList(model);
+
+            if(list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+
+            return list;
+        }
+
+        //вывод конкретного компонента
+        public ComponentViewModel? ReadElement(ComponentSearchModel model)
+        {
+            if(model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            _logger.LogInformation("ReadElement. ComponentName:{Componentame}. Id:{Id}", model.ComponentName, model.Id);
+
+            var element = _componentStorage.GetElement(model);
+
+            if(element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;    
+            }
+
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+
+            return element;
+        }
+
+        //создание компонента
+        public bool Create(ComponentBindingModel model)
+        {
+            CheckModel(model);
+
+            if(_componentStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        //обновление компонента
+        public bool Update(ComponentBindingModel model)
+        {
+            CheckModel(model);
+
+            if(_componentStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        //удаление компонента
+        public bool Delete(ComponentBindingModel model)
+        {
+            CheckModel(model);
+
+            if (_componentStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        //проверка входного аргумента для методов Insert, Update и Delete
+        private void CheckModel(ComponentBindingModel model, bool withParams = true)
+        {
+            if(model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            //если без параметров?
+            if (!withParams)
+            {
+                return;
+            }
+
+            //проверка на наличие названия компонента
+            if (string.IsNullOrEmpty(model.ComponentName){
+                throw new ArgumentNullException("Нет названия компонента", nameof(model.ComponentName));
+            }
+
+            //проверка на наличие нормальной цены у компонента
+            if(model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Цен компонента должна быть больше 0", nameof(model.Cost));
+            }
+
+            _logger.LogInformation("Component. ComponentName:{ComponentName}. Cost:{Cost}. Id:{Id}", model.ComponentName, model.Cost, model.Id);
+            
+            //проверка на наличие такого же компонента в списке
+            var element = _componentStorage.GetElement(new ComponentSearchModel
+            {
+                ComponentName = model.ComponentName,
+            });
+
+            if(element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Компонент с таким названием уже есть");
+            }
+        }
+    }
+}