componentStorage

ComputerHardwareStore/ComputerHardwareStore.sln

@@ -9,7 +9,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputerHardwareStoreDataMo
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputerHardwareStoreContracts", "ComputerHardwareStoreContracts\ComputerHardwareStoreContracts.csproj", "{5F394E21-2597-432B-AE73-BBAFD8D9F50E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputerHardwareStoreBusinessLogic", "ComputerHardwareStoreBusinessLogic\ComputerHardwareStoreBusinessLogic.csproj", "{D32DEB60-AF40-46AF-8914-DC6A19BD66CD}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputerHardwareStoreBusinessLogic", "ComputerHardwareStoreBusinessLogic\ComputerHardwareStoreBusinessLogic.csproj", "{D32DEB60-AF40-46AF-8914-DC6A19BD66CD}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputerHardwareStoreDatabaseImplement", "ComputerHardwareStoreDatabaseImplement\ComputerHardwareStoreDatabaseImplement.csproj", "{09A57BE9-A653-4AAD-9FB2-1F8974F294CD}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -33,6 +35,10 @@ Global
 		{D32DEB60-AF40-46AF-8914-DC6A19BD66CD}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{D32DEB60-AF40-46AF-8914-DC6A19BD66CD}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{D32DEB60-AF40-46AF-8914-DC6A19BD66CD}.Release|Any CPU.Build.0 = Release|Any CPU
+		{09A57BE9-A653-4AAD-9FB2-1F8974F294CD}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{09A57BE9-A653-4AAD-9FB2-1F8974F294CD}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{09A57BE9-A653-4AAD-9FB2-1F8974F294CD}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{09A57BE9-A653-4AAD-9FB2-1F8974F294CD}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ComputerHardwareStore/ComputerHardwareStoreBusinessLogic/BusinessLogic/OrderLogic.cs

@@ -3,6 +3,7 @@ using ComputerHardwareStoreContracts.BusinessLogicsContracts;
 using ComputerHardwareStoreContracts.SearchModels;
 using ComputerHardwareStoreContracts.StorageContracts;
 using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Enums;
 using Microsoft.Extensions.Logging;
 
 namespace ComputerHardwareStoreBusinessLogic.BusinessLogic
@@ -78,7 +79,6 @@ namespace ComputerHardwareStoreBusinessLogic.BusinessLogic
             model.OrderProduct = element.OrderProduct;
             model.DateCreate = element.DateCreate;
             model.Status = element.Status;
-            model.Cost = element.Cost;
 
             if (model.Status != orderStatus - 1)
             {
@@ -106,9 +106,9 @@ namespace ComputerHardwareStoreBusinessLogic.BusinessLogic
             {
                 return;
             }
-            if (model.Cost <= 0)
+            if (model.Sum <= 0)
             {
-                throw new ArgumentNullException("Цена заказа должна быть больше 0", nameof(model.Cost));
+                throw new ArgumentNullException("Цена заказа должна быть больше 0", nameof(model.Sum));
             }
         }
     }

ComputerHardwareStore/ComputerHardwareStoreBusinessLogic/BusinessLogic/PurchaseLogic.cs

@@ -92,7 +92,7 @@ namespace ComputerHardwareStoreBusinessLogic.BusinessLogic
             {
                 return;
             }
-            if (string.IsNullOrEmpty(model.DateCreate))
+            if (model.DateCreate == null) // TODO чего блин, всмысле нет
             {
                 throw new ArgumentNullException("Нет даты создания покупки", nameof(model.Date));
             }

ComputerHardwareStore/ComputerHardwareStoreBusinessLogic/ComputerHardwareStoreBusinessLogic.csproj

@@ -6,6 +6,12 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="BusinessLogic\**" />
+    <EmbeddedResource Remove="BusinessLogic\**" />
+    <None Remove="BusinessLogic\**" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />
   </ItemGroup>

ComputerHardwareStore/ComputerHardwareStoreContracts/BindingModels/BuildBindingModel.cs

@@ -7,7 +7,8 @@ namespace ComputerHardwareStoreContracts.BindingModels
         public int Id { get; set; }
         public string Name { get; set; } = string.Empty;
         public double Price { get; set; }
-        public int VendorId { get; set; }
+        public IVendorModel Vendor { get; set; }
         public Dictionary<int, (IComponentModel, int)> BuildComponents { get; set; } = new();
+        public List<ICommentModel> Comments { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/BindingModels/ComponentBindingModel.cs

@@ -7,6 +7,6 @@ namespace ComputerHardwareStoreContracts.BindingModels
         public int Id { get; set; }
         public string Name { get; set; } = string.Empty;
         public double Cost { get; set; }
-        public int StoreKeeperId { get; set; }
+        public IStoreKeeperModel StoreKeeper { get; set; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/BindingModels/OrderBindingModel.cs

@@ -6,12 +6,10 @@ namespace ComputerHardwareStoreContracts.BindingModels
     public class OrderBindingModel : IOrderModel
     {
         public int Id { get; set; }
-        public int CannedId { get; set; }
-        public int Count { get; set; }
-        public double Cost { 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; }
-        public Dictionary<int, (IProductModel, int)> OrderProduct { get; set; } = new();
+        public DateTime? DateImplement { get; set; } = null;
+        public Dictionary<int, (IProductModel, int)> OrderProducts { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/BindingModels/PurchaseBindingModel.cs

@@ -8,7 +8,7 @@ namespace ComputerHardwareStoreContracts.BindingModels
         public int VendorId { get; set; }
         public double Cost { get; set; }
         public DateTime DateCreate { get; set; }
-        public Dictionary<int, (IBuildModel, int)> PurchaseBuild { get; set; } = new();
-        public Dictionary<int, (IProductModel, int)> PurchaseProduct { get; set; } = new();
+        public Dictionary<int, (IBuildModel, int)> PurchaseBuilds { get; set; } = new();
+        public Dictionary<int, (IProductModel, int)> PurchaseProducts { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/StorageContracts/IBuildStorage.cs

@@ -4,7 +4,7 @@ using ComputerHardwareStoreContracts.ViewModels;
 
 namespace ComputerHardwareStoreContracts.StorageContracts
 {
-    public interface IBuidStorage
+    public interface IBuildStorage
     {
         List<BuildViewModel> GetFullList();
         List<BuildViewModel> GetFilteredList(BuildSearchModel model);

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/BuildViewModel.cs

@@ -7,10 +7,11 @@ namespace ComputerHardwareStoreContracts.ViewModels
     {
         public int Id { get; set; }
         [DisplayName("Название сборки")]
-        public string Name { get; } = string.Empty;
+        public string Name { get; set; } = string.Empty;
         [DisplayName("Стоимость")]
-        public double Price { get; }
-        public int VendorId { get; }
-        public Dictionary<int, (IComponentModel, int)> BuildComponents { get; } = new();
+        public double Price { get; set; }
+        public IVendorModel Vendor { get; set; }
+        public Dictionary<int, (IComponentModel, int)> BuildComponents { get; set; } = new();
+        public List<ICommentModel> Comments { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/CommentViewModel.cs

@@ -7,6 +7,5 @@ namespace ComputerHardwareStoreContracts.ViewModels
         public int Id { get; set; }
         public DateTime Date { get; set; }
         public string Text { get; set; } = string.Empty;
-        public int BuildId { get; set; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/ComponentViewModel.cs

@@ -10,6 +10,6 @@ namespace ComputerHardwareStoreContracts.ViewModels
         public string Name { get; set; } = string.Empty;
         [DisplayName("Цена")]
         public double Cost { get; set; }
-        public int StoreKeeperId { get; set; }
+        public IStoreKeeperModel StoreKeeper { get; set; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/OrderViewModel.cs

@@ -1,15 +1,21 @@
-using ComputerHardwareStoreDataModels.Models;
+using ComputerHardwareStoreDataModels.Enums;
+using ComputerHardwareStoreDataModels.Models;
 using System.ComponentModel;
 
 namespace ComputerHardwareStoreContracts.ViewModels
 {
     public class OrderViewModel : IOrderModel
     {
+        [DisplayName("Номер")]
         public int Id { get; set; }
-        [DisplayName("Стоимость")]
-        public double Cost { get; set; }
+        [DisplayName("Сумма")]
+        public double Sum { get; set; }
+        [DisplayName("Статус")]
+        public OrderStatus Status { get; set; }
         [DisplayName("Дата создания")]
         public DateTime DateCreate { get; set; }
-        public Dictionary<int, (IProductModel, int)> OrderProduct { get; set; } = new();
+        [DisplayName("Дата выполнения")]
+        public DateTime? DateImplement { get; set; }
+        public Dictionary<int, (IProductModel, int)> OrderProducts { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/ProductViewModel.cs

@@ -10,8 +10,6 @@ namespace ComputerHardwareStoreContracts.ViewModels
         public string Name { get; set; } = string.Empty;
         [DisplayName("Цена")]
         public double Price { get; set; }
-        public Dictionary<int, (IComponentModel, int)> CannedComponents { get; set; } = new();
-
-        public Dictionary<int, (IComponentModel, int)> ProductComponents => throw new NotImplementedException();
+        public Dictionary<int, (IComponentModel, int)> ProductComponents { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreContracts/ViewModels/PurchaseViewModel.cs

@@ -13,8 +13,8 @@ namespace ComputerHardwareStoreContracts.ViewModels
         public int VendorId { get; set; }
         [DisplayName("Сумма")]
         public double Sum { get; set; }
-        public Dictionary<int, (IBuildModel, int)> PurchaseBuild { get; set; } = new();
+        public Dictionary<int, (IBuildModel, int)> PurchaseBuilds { get; set; } = new();
 
-        public Dictionary<int, (IProductModel, int)> PurchaseProduct { get; set; } = new();
+        public Dictionary<int, (IProductModel, int)> PurchaseProducts { get; set; } = new();
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDataModels/Models/IBuildModel.cs

@@ -4,7 +4,8 @@
     {
         string Name { get; }
         double Price { get; }
-        int VendorId { get; }
+        IVendorModel Vendor { get; }
         public Dictionary<int, (IComponentModel, int)> BuildComponents { get; }
+        public List<ICommentModel> Comments { get; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDataModels/Models/ICommentModel.cs

@@ -4,6 +4,5 @@
     {
         DateTime Date { get; }
         string Text { get; }
-        int BuildId { get; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDataModels/Models/IComponentModel.cs

@@ -4,6 +4,6 @@
     {
         string Name { get; }
         double Cost { get; }
-        int StoreKeeperId { get; }
+        IStoreKeeperModel StoreKeeper { get; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDataModels/Models/IOrderModel.cs

@@ -1,9 +1,13 @@
-namespace ComputerHardwareStoreDataModels.Models
+using ComputerHardwareStoreDataModels.Enums;
+
+namespace ComputerHardwareStoreDataModels.Models
 {
     public interface IOrderModel : IId
     {
-        double Cost { get; }
+        double Sum { get; }
+        OrderStatus Status { get; }
         DateTime DateCreate { get; }
-        public Dictionary<int, (IProductModel, int)> OrderProduct { get; }
+        DateTime? DateImplement { get; }
+        public Dictionary<int, (IProductModel, int)> OrderProducts { get; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDataModels/Models/IPurchaseModel.cs

@@ -5,7 +5,7 @@
         int VendorId { get; }
         double Cost { get; }
         DateTime DateCreate { get; }
-        public Dictionary<int, (IBuildModel, int)> PurchaseBuild { get; }
-        public Dictionary<int, (IProductModel, int)> PurchaseProduct { get; }
+        public Dictionary<int, (IBuildModel, int)> PurchaseBuilds { get; }
+        public Dictionary<int, (IProductModel, int)> PurchaseProducts { get; }
     }
 }

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/ComputerHardwareStoreDBContext.cs

@@ -0,0 +1,42 @@
+using ComputerHardwareStoreDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace ComputerHardwareStoreDatabaseImplement
+{
+    public class ComputerHardwareStoreDBContext : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            /*
+                * в program добавить:
+                * // получаем строку подключения из файла конфигурации
+                * string connection = builder.Configuration.GetConnectionString("DefaultConnection");
+                * 
+                * // добавляем контекст ApplicationContext в качестве сервиса в приложение
+                * builder.Services.AddDbContext<ApplicationContext>(options => options.UseSqlServer(connection));
+                * 
+                * в appsettings:
+                * "ConnectionStrings": {
+                *      "DefaultConnection": "Host=localhost;Database=ProductBar_db;Username=compstore;Password=compstore"
+                * },
+            */
+
+            base.OnConfiguring(optionsBuilder);
+            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+            AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+        }
+        public virtual DbSet<Component> Components { set; get; }
+        public virtual DbSet<Product> Products { set; get; }
+        public virtual DbSet<ProductComponent> ProductComponents { set; get; }
+        public virtual DbSet<StoreKeeper> StoreKeepers { set; get; }
+        public virtual DbSet<Build> Builds { set; get; }
+        public virtual DbSet<Order> Orders { set; get; }
+        public virtual DbSet<OrderProduct> OrderProducts { set; get; }
+        public virtual DbSet<BuildComponent> BuildComponents { set; get; }
+        public virtual DbSet<Comment> Comments { set; get; }
+        public virtual DbSet<Vendor> Vendors { set; get; }
+        public virtual DbSet<Purchase> Purchases { set; get; }
+        public virtual DbSet<PurchaseBuild> PurchaseBuilds { set; get; }
+        public virtual DbSet<PurchaseProduct> PurchaseProducts { set; get; }
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/ComputerHardwareStoreDatabaseImplement.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.4" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputerHardwareStoreContracts\ComputerHardwareStoreContracts.csproj" />
+    <ProjectReference Include="..\ComputerHardwareStoreDataModels\ComputerHardwareStoreDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,85 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.SearchModels;
+using ComputerHardwareStoreContracts.StorageContracts;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDatabaseImplement.Models;
+
+namespace ComputerHardwareStoreDatabaseImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        public List<ComponentViewModel> GetFullList()
+        {
+            using var context = new ComputerHardwareStoreDBContext();
+            return context.Components
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new ();
+            }
+            using var context = new ComputerHardwareStoreDBContext();
+            return context.Components
+                .Where(x => x.Name.Contains(model.Name))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new ComputerHardwareStoreDBContext();
+            return context.Components
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Name)
+                && x.Name == model.Name)
+                || (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            using var context = new ComputerHardwareStoreDBContext();
+            var newComponent = Component.Create(context, model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            context.Components.Add(newComponent);
+            context.SaveChanges();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            using var context = new ComputerHardwareStoreDBContext();
+            var component = context.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            using var context = new ComputerHardwareStoreDBContext();
+            var element = context.Components.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Components.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Build.cs

@@ -0,0 +1,90 @@
+
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using Microsoft.EntityFrameworkCore.Metadata.Internal;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Runtime.InteropServices;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Build : IBuildModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public double Price { get; set; }
+
+        private Dictionary<int, (IComponentModel, int)>? _buildComponents = null;
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> BuildComponents
+        {
+            get
+            {
+                if (_buildComponents == null)
+                {
+                    _buildComponents = Components
+                        .ToDictionary(bc => bc.ComponentId, bc =>
+                        (bc.Component as IComponentModel, bc.Count));
+                }
+                return _buildComponents;
+            }   
+        }
+        [ForeignKey("BuildId")]
+        public virtual List<BuildComponent> Components { get; set; } = new();
+        [ForeignKey("BuildId")]
+
+        public virtual List<Comment> Comments { get; set; } = new();
+        [NotMapped]
+        List<ICommentModel> IBuildModel.Comments => Comments.Select(c => c as ICommentModel).ToList();
+
+        public virtual Vendor Vendor { get; private set; } = new();
+        IVendorModel IBuildModel.Vendor => Vendor as IVendorModel;
+
+        public static Build? Create(ComputerHardwareStoreDBContext context, BuildBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Price = model.Price,
+                Vendor = context.Vendors.First(v => v.Id == model.Vendor.Id),
+                Components = context.Components
+                    .Where(c => model.BuildComponents.ContainsKey(c.Id))
+                    .Select(c => new BuildComponent()
+                    {
+                        BuildId = model.Id,
+                        ComponentId = c.Id,
+                        Component = c,
+                        Count = model.BuildComponents[c.Id].Item2
+                    }).ToList()
+            };
+        }
+
+        public void Update(BuildBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = string.IsNullOrEmpty(model.Name) ? Name : model.Name;
+            Price = model.Price;
+        }
+
+        public BuildViewModel GetViewModel() => new()
+        {
+            Id = Id,
+            Name = Name,
+            Price = Price,
+            Vendor = Vendor,
+            Comments = Comments.Select(c => c as ICommentModel).ToList(),
+            BuildComponents = BuildComponents
+        };
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/BuildComponent.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class BuildComponent
+    {
+        public int Id { get; set; }
+        [Required]
+        public int BuildId { get; set; }
+        [Required]
+        public int ComponentId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Build Build { get; set; } = new();
+        public virtual Component Component { get; set; } = new();
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Comment.cs

@@ -0,0 +1,48 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Comment : ICommentModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public DateTime Date { get; set; }
+        [Required]
+        public string Text { get; set; } = string.Empty;
+        [Required]
+        public int BuildId { get; set; }
+        public static Comment? Create(CommentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Id = model.Id,
+                Date = model.Date,
+                Text = model.Text,
+                BuildId = model.BuildId,
+            };
+        }
+
+        public void Update(CommentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Text = model.Text;
+        }
+
+        public CommentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Date = Date,
+            Text = Text,
+        };
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Component.cs

@@ -0,0 +1,54 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+        [Required]
+        public double Cost { get; set; }
+        [Required]
+        public virtual StoreKeeper? StoreKeeper { get; set; }
+        [NotMapped]
+        IStoreKeeperModel IComponentModel.StoreKeeper => throw new NotImplementedException();
+
+        [ForeignKey("ComponentId")]
+        public virtual List<ProductComponent> ProductComponents { get; set; } = new();
+        public static Component? Create(ComputerHardwareStoreDBContext context, ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Cost = model.Cost,
+                StoreKeeper = context.StoreKeepers.First(x => x.Id == model.StoreKeeper.Id)
+            };
+        }
+        public void Update (ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = string.IsNullOrEmpty(model.Name) ? Name : model.Name;
+            Cost = model.Cost;
+        }
+
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Cost = Cost
+        };
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Order.cs

@@ -0,0 +1,84 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Enums;
+using ComputerHardwareStoreDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public int Count { get; set; }
+        [Required]
+        public double Sum { get; set; }
+        [Required]
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+        [Required]
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+        public DateTime? DateImplement { get; set; }
+
+        private Dictionary<int, (IProductModel, int)>? _orderProducts = null;
+        [NotMapped]
+        public Dictionary<int, (IProductModel, int)> OrderProducts 
+        {
+            get
+            {
+                if (_orderProducts == null)
+                {
+                    _orderProducts = Products
+                        .ToDictionary(
+                            op => op.ProductId, 
+                            op => (op.Product as IProductModel, op.Count));
+                }
+                return _orderProducts;
+            }
+        }
+        [ForeignKey("OrderId")]
+        public virtual List<OrderProduct> Products { get; set; } = new();
+        public static Order? Create(ComputerHardwareStoreDBContext context, OrderBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement,
+                Products = context.Products
+                    .Where(p => model.OrderProducts.ContainsKey(p.Id))
+                    .Select(p => new OrderProduct()
+                    {
+                        OrderId = model.Id,
+                        ProductId = p.Id,
+                        Product = p,
+                        Count = model.OrderProducts[p.Id].Item2
+                    })
+                    .ToList()
+            };
+        }
+        public void Update(OrderBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+        };
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/OrderProduct.cs

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class OrderProduct
+    {
+        public int Id { get; set; }
+        [Required]
+        public int OrderId { get; set; }
+        [Required]
+        public int ProductId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Product Product { get; set; } = new();
+        public virtual Order Order { get; set; } = new();
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Product.cs

@@ -0,0 +1,98 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Product : IProductModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public double Price { get; set; }
+        private Dictionary<int, (IComponentModel, int)>? _productComponents = null;
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> ProductComponents
+        {
+            get
+            {
+                if (_productComponents == null)
+                {
+                    _productComponents = Components
+                        .ToDictionary(c => c.ComponentId, c => (c.Component as IComponentModel, c.Count));
+                }
+                return _productComponents;
+            }
+        }
+        [ForeignKey("ProductId")]
+        public virtual List<ProductComponent> Components { get; set; } = new();
+        [ForeignKey("ProductId")]
+        public virtual List<Order> Orders { get; set; } = new();
+        public static Product Create(ComputerHardwareStoreDBContext context, ProductBindingModel model)
+        {
+            return new Product()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Price = model.Price,
+                Components = context.Components
+                    .Where(c => model.ProductComponents.ContainsKey(c.Id))
+                    .Select(c => new ProductComponent()
+                    {
+                        ProductId = model.Id,
+                        ComponentId = c.Id,
+                        Component = c,
+                        Count = model.ProductComponents[c.Id].Item2
+                    }).ToList(),
+            };
+        }
+        public void Update(ProductBindingModel model)
+        {
+            Name = string.IsNullOrEmpty(model.Name) ? Name : model.Name;
+            Price = model.Price;
+            
+        }
+        public ProductViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Price = Price,
+            ProductComponents = ProductComponents
+        };
+
+        public static void UpdateComponents(ComputerHardwareStoreDBContext context, ProductBindingModel model)
+        {
+            var productComponents = context.ProductComponents
+                .Where(pc => pc.ProductId == model.Id)
+                .ToList();
+            if (productComponents.Count != 0 && productComponents.Count > 0)
+            {
+                // удалили те, которых нет в модели
+                context.ProductComponents
+                    .Where(pc => !model.ProductComponents.ContainsKey(pc.ComponentId))
+                    .ExecuteDelete();
+                // обновили количество у существующих записей
+                productComponents
+                    .ForEach(updateComponent =>
+                    {
+                        updateComponent.Count = model.ProductComponents[updateComponent.ComponentId].Item2;
+                        model.ProductComponents.Remove(updateComponent.ComponentId);
+                    });  
+            }
+            // добавили новые
+            context.ProductComponents
+                .AddRange(model.ProductComponents.Values
+                .Select(val => new ProductComponent()
+                {
+                    ProductId = model.Id,
+                    ComponentId = val.Item1.Id,
+                    Count = val.Item2
+                }));
+            context.SaveChanges();
+        }
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/ProductComponent.cs

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class ProductComponent
+    {
+        public int Id { get; set; }
+        [Required]
+        public int ProductId { get; set; }
+        [Required]
+        public int ComponentId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Component Component { get; set; } = new();
+        public virtual Product Product { get; set; } = new();
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Purchase.cs

@@ -0,0 +1,158 @@
+
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using Microsoft.EntityFrameworkCore;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Purchase : IPurchaseModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public int VendorId { get; set; }
+        [Required]
+        public double Cost { get; set; }
+        [Required]
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+        private Dictionary<int, (IBuildModel, int)>? _purchaseBuilds = null;
+        [NotMapped]
+        public Dictionary<int, (IBuildModel, int)> PurchaseBuilds
+        {
+            get
+            {
+                if (_purchaseBuilds == null)
+                {
+                    _purchaseBuilds = Builds
+                        .ToDictionary(op => op.BuildId, op => (op.Build as IBuildModel, op.Count));
+                }
+                return _purchaseBuilds;
+            }
+        }
+
+        [ForeignKey("PurchaseId")]
+        public virtual List<PurchaseBuild> Builds { get; set; } = new();
+        private Dictionary<int, (IProductModel, int)>? _purchaseProducts = null;
+        [NotMapped]
+        public Dictionary<int, (IProductModel, int)> PurchaseProducts
+        {
+            get
+            {
+                if (_purchaseProducts == null)
+                {
+                    _purchaseProducts = Products
+                        .ToDictionary(op => op.ProductId, op => (op.Product as IProductModel, op.Count));
+                }
+                return _purchaseProducts;
+            }
+        }
+        [ForeignKey("PurchaseId")]
+        public virtual List<PurchaseProduct> Products { get; set; } = new();
+
+        public static Purchase Create(ComputerHardwareStoreDBContext context, PurchaseBindingModel model)
+        {
+            return new Purchase()
+            {
+                Id = model.Id,
+                Cost = model.Cost,
+                DateCreate = model.DateCreate,
+                Builds = context.Builds
+                    .Where(b => model.PurchaseBuilds.ContainsKey(b.Id))
+                    .Select(b => new PurchaseBuild()
+                    {
+                        PurchaseId = model.Id,
+                        BuildId = b.Id,
+                        Build = b,
+                        Count = model.PurchaseProducts[b.Id].Item2
+                    }).ToList(),
+                Products = context.Products
+                    .Where(p => model.PurchaseProducts.ContainsKey(p.Id))
+                    .Select (p => new PurchaseProduct()
+                    {
+                        PurchaseId = model.Id,
+                        ProductId = p.Id,
+                        Product = p,
+                        Count = model.PurchaseProducts[p.Id].Item2
+                    })
+                    .ToList()
+            };
+        }
+        public void Update(PurchaseBindingModel model)
+        {
+            Cost = model.Cost;
+
+        }
+        public PurchaseViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Cost = Cost,
+            DateCreate = DateCreate,
+            PurchaseBuilds = PurchaseBuilds,
+            PurchaseProducts = PurchaseProducts
+        };
+
+        public static void UpdateBuilds(ComputerHardwareStoreDBContext context, PurchaseBindingModel model)
+        {
+            var productBuilds = context.PurchaseBuilds
+                .Where(pc => pc.PurchaseId == model.Id)
+                .ToList();
+            if (productBuilds.Count != 0 && productBuilds.Count > 0)
+            {
+                // удалили те, которых нет в модели
+                context.PurchaseBuilds
+                    .Where(pc => !model.PurchaseBuilds.ContainsKey(pc.BuildId))
+                    .ExecuteDelete();
+                // обновили количество у существующих записей
+                productBuilds
+                    .ForEach(updateBuild =>
+                    {
+                        updateBuild.Count = model.PurchaseBuilds[updateBuild.BuildId].Item2;
+                        model.PurchaseBuilds.Remove(updateBuild.BuildId);
+                    });
+            }
+            // добавили новые
+            context.PurchaseBuilds
+                .AddRange(model.PurchaseBuilds.Values
+                .Select(val => new PurchaseBuild()
+                {
+                    PurchaseId = model.Id,
+                    BuildId = val.Item1.Id,
+                    Count = val.Item2
+                }));
+            context.SaveChanges();
+        }
+
+        public static void UpdateProducts(ComputerHardwareStoreDBContext context, PurchaseBindingModel model)
+        {
+            var productProducts = context.PurchaseProducts
+                .Where(pc => pc.PurchaseId == model.Id)
+                .ToList();
+            if (productProducts.Count != 0 && productProducts.Count > 0)
+            {
+                // удалили те, которых нет в модели
+                context.PurchaseProducts
+                    .Where(pc => !model.PurchaseProducts.ContainsKey(pc.ProductId))
+                    .ExecuteDelete();
+                // обновили количество у существующих записей
+                productProducts
+                    .ForEach(updateProduct =>
+                    {
+                        updateProduct.Count = model.PurchaseProducts[updateProduct.ProductId].Item2;
+                        model.PurchaseProducts.Remove(updateProduct.ProductId);
+                    });
+            }
+            // добавили новые
+            context.PurchaseProducts
+                .AddRange(model.PurchaseProducts.Values
+                .Select(val => new PurchaseProduct()
+                {
+                    PurchaseId = model.Id,
+                    ProductId = val.Item1.Id,
+                    Count = val.Item2
+                }));
+            context.SaveChanges();
+        }
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/PurchaseBuild.cs

@@ -0,0 +1,18 @@
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class PurchaseBuild
+    {
+        public int Id { get; set; }
+        [Required]
+        public int PurchaseId { get; set; }
+        [Required]
+        public int BuildId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Purchase Purchase { get; set; } = new();
+        public virtual Build Build { get; set; } = new();
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/PurchaseProduct.cs

@@ -0,0 +1,18 @@
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+   public class PurchaseProduct
+   {
+        public int Id { get; set; }
+        [Required]
+        public int PurchaseId { get; set; }
+        [Required]
+        public int ProductId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Purchase Purchase { get; set; } = new();
+        public virtual Product Product { get; set; } = new();
+   }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/StoreKeeper.cs

@@ -0,0 +1,56 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class StoreKeeper : IStoreKeeperModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+        [Required]
+
+        public string Login { get; private set; } = string.Empty;
+        [Required]
+        public string Password { get; private set; } = string.Empty;
+        [ForeignKey("StoreKeeperId")]
+        public virtual List<Product> Products { get; set; } = new();
+        [ForeignKey("StoreKeeperId")]
+        public virtual List<Component> Components { get; set; } = new();
+
+        public static StoreKeeper? Create(ComputerHardwareStoreDBContext context, StoreKeeperBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new StoreKeeper()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Login = model.Login,
+                Password = model.Password,
+            };
+        }
+        public void Update(StoreKeeperBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = string.IsNullOrEmpty(model.Name) ? Name : model.Name;
+            Password = string.IsNullOrEmpty(model.Password) ? Password : model.Password;
+        }
+
+        public StoreKeeperViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Login = Login,
+            Password = Password
+        };
+    }
+}

ComputerHardwareStore/ComputerHardwareStoreDatabaseImplement/Models/Vendor.cs

@@ -0,0 +1,57 @@
+using ComputerHardwareStoreContracts.BindingModels;
+using ComputerHardwareStoreContracts.ViewModels;
+using ComputerHardwareStoreDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ComputerHardwareStoreDatabaseImplement.Models
+{
+    public class Vendor : IVendorModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+        [Required]
+
+        public string Login { get; private set; } = string.Empty;
+        [Required]
+
+        public string Password { get; private set; } = string.Empty;
+        [ForeignKey("VendorId")]
+        public virtual List<Purchase> Purchases { get; set; } = new();
+        [ForeignKey("VendorId")]
+        public virtual List<Build> Builds { get; set; } = new();
+
+        public static Vendor? Create(ComputerHardwareStoreDBContext context, VendorBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Vendor()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Login = model.Login,
+                Password = model.Password,
+            };
+        }
+        public void Update(VendorBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = string.IsNullOrEmpty(model.Name) ? Name : model.Name;
+            Password = string.IsNullOrEmpty(model.Password) ? Password : model.Password;
+        }
+
+        public VendorViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Login = Login,
+            Password = Password
+        };
+    }
+}