Сделаны библиотеки

AbstractComputerDataModel/ComputerShopDataModels.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+</Project>

AbstractComputerDataModel/Enums/OrderStatus.cs

@@ -0,0 +1,11 @@
+namespace ComputerShopDataModels.Enums
+{
+    public enum OrderStatus
+    {
+        Неизвестен = -1,
+        Принят = 0,
+        Выполняется = 1,
+        Готов = 2,
+        Выдан = 3
+    }
+}

AbstractComputerDataModel/Models/IComponentModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopDataModels.Models
+{
+    public interface IComponentModel
+    {
+        string ComponentName { get; }
+        double Cost { get; }
+    }
+}

AbstractComputerDataModel/Models/IComputerModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopDataModels.Models
+{
+    public interface IComputerModel
+    {
+        string ComputerName { get; }
+        double Price { get; }
+        Dictionary<int, (IComponentModel, int)> ComputerComponents { get; }
+    }
+}

AbstractComputerDataModel/Models/IId.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopDataModels.Models
+{
+    public interface IId
+    {
+        string Id { get; }
+    }
+}

AbstractComputerDataModel/Models/IOrderModel.cs

@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputerShopDataModels.Enums;
+
+namespace ComputerShopDataModels.Models
+{
+    public interface IOrderModel
+    {
+        int ComputerId { get; }
+        int Count { get; }
+        double Sum { get; }
+        OrderStatus Status { get; }
+        DateTime DateCreate { get; }
+        DateTime? DateImplement { get; }
+    }
+}

ComputerShopBusinessLogic/BusinessLogics/ComponentLogic.cs

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+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.BusinessLogicsContracts;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.StoragesContracts;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+
+namespace ComputerShopBusinessLogic.BusinessLogics
+{
+    public class ComponentLogic : IComponentLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IComponentStorage _componentStorage;
+        public ComponentLogic(ILogger<ComponentLogic> logger, IComponentStorage componentStorage)
+        {
+            _logger = logger;
+            _componentStorage = componentStorage;
+        }
+        public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComponentName:{ComponentName}. Id:{ Id}", model?.ComponentName, model?.Id);
+        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;
+        }
+        public ComponentViewModel? ReadElement(ComponentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ComponentName:{ComponentName}. 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;
+        }
+        public bool Create(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Update(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(ComponentBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_componentStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(ComponentBindingModel model, bool withParams =
+        true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                throw new ArgumentNullException("Нет названия компонента", nameof(model.ComponentName));
+            }
+            if (model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Cost));
+            }
+            _logger.LogInformation("Component. ComponentName:{ComponentName}. Cost:{ Cost}. Id: { Id} ", model.ComponentName, model.Cost, model.Id);
+            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");
+            }
+        }
+    }
+}

ComputerShopBusinessLogic/ComputerShopBusinessLogic.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputerShopContracts\ComputerShopContracts.csproj" />
+  </ItemGroup>
+
+</Project>

ComputerShopContracts/BindingModels/ComponentBindingModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputerShopDataModels.Models;
+
+namespace ComputerShopContracts.BindingModels
+{
+    public class ComponentBindingModel : IComponentModel
+    {
+        public int Id { get; set; }
+        public string ComponentName { get; set; } = string.Empty;
+        public double Cost { get; set; }
+    }
+}

ComputerShopContracts/BindingModels/ComputerBindingModel.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputerShopDataModels.Models;
+
+namespace ComputerShopContracts.BindingModels
+{
+    public class ComputerBindingModel : IComputerModel
+    {
+        public int Id { get; set; }
+        public string ComputerName { get; set; } = string.Empty;
+        public double Price { get; set; }
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get;
+            set;
+        } = new();
+    }
+}

ComputerShopContracts/BindingModels/OrderBindingModel.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputerShopDataModels.Models;
+using ComputerShopDataModels.Enums;
+
+namespace ComputerShopContracts.BindingModels
+{
+    public class OrderBindingModel : IOrderModel
+    {
+        public int Id { get; set; }
+        public int ComputerId { get; set; }
+        public int Count { get; set; }
+        public double Sum { get; set; }
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+        public DateTime? DateImplement { get; set; }
+    }
+}

ComputerShopContracts/BusinessLogicsContracts/IComponentLogic.cs

@@ -0,0 +1,20 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.BusinessLogicsContracts
+{
+    public interface IComponentLogic
+    {
+        List<ComponentViewModel>? ReadList(ComponentSearchModel? model);
+        ComponentViewModel? ReadElement(ComponentSearchModel model);
+        bool Create(ComponentBindingModel model);
+        bool Update(ComponentBindingModel model);
+        bool Delete(ComponentBindingModel model);
+    }
+}

ComputerShopContracts/BusinessLogicsContracts/IComputerLogic.cs

@@ -0,0 +1,20 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.BusinessLogicsContracts
+{
+    public interface IComputerLogic
+    {
+        List<ComputerViewModel>? ReadList(ComputerSearchModel? model);
+        ComputerViewModel? ReadElement(ComputerSearchModel model);
+        bool Create(ComputerBindingModel model);
+        bool Update(ComputerBindingModel model);
+        bool Delete(ComputerBindingModel model);
+    }
+}

ComputerShopContracts/BusinessLogicsContracts/IOrderLogic.cs

@@ -0,0 +1,20 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.BusinessLogicsContracts
+{
+    internal interface IOrderLogic
+    {
+        List<OrderViewModel>? ReadList(OrderSearchModel? model);
+        bool CreateOrder(OrderBindingModel model);
+        bool TakeOrderInWork(OrderBindingModel model);
+        bool FinishOrder(OrderBindingModel model);
+        bool DeliveryOrder(OrderBindingModel model);
+    }
+}

ComputerShopContracts/ComputerShopContracts.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AbstractComputerDataModel\ComputerShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputerShopContracts/SearchModels/ComponentSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.SearchModels
+{
+    public class ComponentSearchModel
+    {
+        public int? Id { get; set; }
+        public string? ComponentName { get; set; }
+    }
+}

ComputerShopContracts/SearchModels/ComputerSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.SearchModels
+{
+    public class ComputerSearchModel
+    {
+        public int? Id { get; set; }
+        public string? ComputerName { get; set; }
+    }
+}

ComputerShopContracts/SearchModels/OrderSearchModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.SearchModels
+{
+    public class OrderSearchModel
+    {
+        public int? Id { get; set; }
+    }
+}

ComputerShopContracts/StoragesContracts/IComponentStorage.cs

@@ -0,0 +1,21 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.StoragesContracts
+{
+    public interface IComponentStorage
+    {
+        List<ComponentViewModel> GetFullList();
+        List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
+        ComponentViewModel? GetElement(ComponentSearchModel model);
+        ComponentViewModel? Insert(ComponentBindingModel model);
+        ComponentViewModel? Update(ComponentBindingModel model);
+        ComponentViewModel? Delete(ComponentBindingModel model);
+    }
+}

ComputerShopContracts/StoragesContracts/IComputerStorage.cs

@@ -0,0 +1,21 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.StoragesContracts
+{
+    public interface IComputerStorage
+    {
+        List<ComputerViewModel> GetFullList();
+        List<ComputerViewModel> GetFilteredList(ComputerSearchModel model);
+        ComputerViewModel? GetElement(ComputerSearchModel model);
+        ComputerViewModel? Insert(ComputerBindingModel model);
+        ComputerViewModel? Update(ComputerBindingModel model);
+        ComputerViewModel? Delete(ComputerBindingModel model);
+    }
+}

ComputerShopContracts/StoragesContracts/IOrderStorage.cs

@@ -0,0 +1,21 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.StoragesContracts
+{
+    public interface IOrderStorage
+    {
+        List<OrderViewModel> GetFullList();
+        List<OrderViewModel> GetFilteredList(OrderSearchModel model);
+        OrderViewModel? GetElement(OrderSearchModel model);
+        OrderViewModel? Insert(OrderBindingModel model);
+        OrderViewModel? Update(OrderBindingModel model);
+        OrderViewModel? Delete(OrderBindingModel model);
+    }
+}

ComputerShopContracts/ViewModels/ComponentViewModel.cs

@@ -0,0 +1,19 @@
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.ViewModels
+{
+    public class ComponentViewModel : IComponentModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название компонента")]
+        public string ComponentName { get; set; } = string.Empty;
+        [DisplayName("Цена")]
+        public double Cost { get; set; }
+    }
+}

ComputerShopContracts/ViewModels/ComputerViewModel.cs

@@ -0,0 +1,24 @@
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.ViewModels
+{
+    public class ComputerViewModel : IComputerModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Название изделия")]
+        public string ComputerName { get; set; } = string.Empty;
+        [DisplayName("Цена")]
+        public double Price { get; set; }
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get;
+            set;
+        } = new();
+    }
+}

ComputerShopContracts/ViewModels/OrderViewModel.cs

@@ -0,0 +1,30 @@
+using ComputerShopDataModels.Enums;
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopContracts.ViewModels
+{
+    public class OrderViewModel : IOrderModel
+    {
+        [DisplayName("Номер")]
+        public int Id { get; set; }
+        public int ComputerId { get; set; }
+        [DisplayName("Изделие")]
+        public string ComputerName { get; set; } = string.Empty;
+        [DisplayName("Количество")]
+        public int Count { get; set; }
+        [DisplayName("Сумма")]
+        public double Sum { get; set; }
+        [DisplayName("Статус")]
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+        [DisplayName("Дата создания")]
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+        [DisplayName("Дата выполнения")]
+        public DateTime? DateImplement { get; set; }
+    }
+}

ComputerShopListImplement/ComputerShopListImplement.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\AbstractComputerDataModel\ComputerShopDataModels.csproj" />
+    <ProjectReference Include="..\ComputerShopContracts\ComputerShopContracts.csproj" />
+  </ItemGroup>
+
+</Project>

ComputerShopListImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,108 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.StoragesContracts;
+using ComputerShopContracts.ViewModels;
+using ComputerShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataListSingleton _source;
+        public ComponentStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+        public List<ComponentViewModel> GetFullList()
+        {
+            var result = new List<ComponentViewModel>();
+            foreach (var component in _source.Components)
+            {
+                result.Add(component.GetViewModel);
+            }
+            return result;
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel
+        model)
+        {
+            var result = new List<ComponentViewModel>();
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return result;
+            }
+            foreach (var component in _source.Components)
+            {
+                if (component.ComponentName.Contains(model.ComponentName))
+                {
+                    result.Add(component.GetViewModel);
+                }
+            }
+            return result;
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var component in _source.Components)
+            {
+                if ((!string.IsNullOrEmpty(model.ComponentName) &&
+                component.ComponentName == model.ComponentName) ||
+                (model.Id.HasValue && component.Id == model.Id))
+                {
+                    return component.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var component in _source.Components)
+            {
+                if (model.Id <= component.Id)
+                {
+                    model.Id = component.Id + 1;
+                }
+            }
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            _source.Components.Add(newComponent);
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            foreach (var component in _source.Components)
+            {
+                if (component.Id == model.Id)
+                {
+                    component.Update(model);
+                    return component.GetViewModel;
+                }
+            }
+            return null;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            for (int i = 0; i < _source.Components.Count; ++i)
+            {
+                if (_source.Components[i].Id == model.Id)
+                {
+                    var element = _source.Components[i];
+                    _source.Components.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+    }
+}

ComputerShopListImplement/Models/Component.cs

@@ -0,0 +1,47 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.ViewModels;
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        public string ComponentName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Component? Create(ComponentBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public void Update(ComponentBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+    }
+}

ComputerShopListImplement/Models/Computer.cs

@@ -0,0 +1,54 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.ViewModels;
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; private set; }
+        public string ComputerName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get;
+            private set;
+        } = new Dictionary<int, (IComponentModel, int)>();
+        public static Computer? Create(ComputerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                ComputerComponents = model.ComputerComponents
+            };
+        }
+        public void Update(ComputerBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+            ComputerComponents = model.ComputerComponents;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+    }
+}

ComputerShopListImplement/Models/DataListSingleton.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Models
+{
+    public class DataListSingleton
+    {
+        private static DataListSingleton? _instance;
+        public List<Component> Components { get; set; }
+        //public List<Order> Orders { get; set; }
+        public List<Computer> Computers { get; set; }
+        private DataListSingleton()
+        {
+            Components = new List<Component>();
+            //Orders = new List<Order>();
+            Computers = new List<Computer>();
+        }
+        public static DataListSingleton GetInstance()
+        {
+            if (_instance == null)
+            {
+                _instance = new DataListSingleton();
+            }
+            return _instance;
+        }
+    }
+}

ComputersShop/ComputersShop.csproj

@@ -8,4 +8,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
+  </ItemGroup>
+
 </Project>

ComputersShop/ComputersShop.sln

@@ -5,6 +5,14 @@ VisualStudioVersion = 17.3.32819.101
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShop", "ComputersShop.csproj", "{7BE0F575-7A99-4161-BCD0-4F14E5AC7B95}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerShopDataModels", "..\AbstractComputerDataModel\ComputerShopDataModels.csproj", "{07BF1453-7129-45C4-AB54-AFC38F1E579D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerShopContracts", "..\ComputerShopContracts\ComputerShopContracts.csproj", "{4684F24F-29DC-496C-803F-0877E5100939}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerShopBusinessLogic", "..\ComputerShopBusinessLogic\ComputerShopBusinessLogic.csproj", "{8A6D08BB-449A-4C35-81CA-F82B6293D241}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerShopListImplement", "..\ComputerShopListImplement\ComputerShopListImplement.csproj", "{D632C3A7-3E0E-4B53-B2B4-696A9F6B8D38}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -15,6 +23,22 @@ Global
 		{7BE0F575-7A99-4161-BCD0-4F14E5AC7B95}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7BE0F575-7A99-4161-BCD0-4F14E5AC7B95}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7BE0F575-7A99-4161-BCD0-4F14E5AC7B95}.Release|Any CPU.Build.0 = Release|Any CPU
+		{07BF1453-7129-45C4-AB54-AFC38F1E579D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{07BF1453-7129-45C4-AB54-AFC38F1E579D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{07BF1453-7129-45C4-AB54-AFC38F1E579D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{07BF1453-7129-45C4-AB54-AFC38F1E579D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4684F24F-29DC-496C-803F-0877E5100939}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4684F24F-29DC-496C-803F-0877E5100939}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4684F24F-29DC-496C-803F-0877E5100939}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4684F24F-29DC-496C-803F-0877E5100939}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8A6D08BB-449A-4C35-81CA-F82B6293D241}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8A6D08BB-449A-4C35-81CA-F82B6293D241}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8A6D08BB-449A-4C35-81CA-F82B6293D241}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8A6D08BB-449A-4C35-81CA-F82B6293D241}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D632C3A7-3E0E-4B53-B2B4-696A9F6B8D38}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D632C3A7-3E0E-4B53-B2B4-696A9F6B8D38}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D632C3A7-3E0E-4B53-B2B4-696A9F6B8D38}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D632C3A7-3E0E-4B53-B2B4-696A9F6B8D38}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE