All done

SoftwareInstallation/SoftwareInstallation/FormShop.cs

@@ -57,8 +57,9 @@ namespace SoftwareInstallationView
                     ShopName = nameTextBox.Text,
                     ShopAddress = addressTextBox.Text,
                     OpeningDate = openingDatePicker.Value.Date,
-                    PackageMaxCount = (int)numericUpDown.Value
-                };
+                    PackageMaxCount = (int)numericUpDown.Value,
+                    ShopPackages = _listStores
+				};
                 var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
                 if (!operationResult)
                 {

SoftwareInstallation/SoftwareInstallationBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -67,6 +67,7 @@ namespace SoftwareInstallationBusinessLogic.BusinessLogics
             model.Status = newStatus;
 
             if (model.Status == OrderStatus.Выдан)
+            {
                 model.DateImplement = DateTime.Now;
 
                 var package = _packageStorage.GetElement(new() { Id = viewModel.PackageId });
@@ -81,8 +82,8 @@ namespace SoftwareInstallationBusinessLogic.BusinessLogics
                     throw new Exception($"AddPackage operation failed. Store is full.");
                 }
             }
-            else
-            {
+
+            else {
                 model.DateImplement = viewModel.DateImplement;
             }
 

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Implements/OrderStorage.cs

@@ -40,7 +40,7 @@ namespace SoftwareInstallationDatabaseImplement.Implements
 
             using var context = new SoftwareInstallationDatabase();
 
-            return context.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+            return context.Orders.Include(x => x.Package).FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
         }
 
         public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
@@ -64,15 +64,14 @@ namespace SoftwareInstallationDatabaseImplement.Implements
 
         public OrderViewModel? Insert(OrderBindingModel model)
         {
-            var newOrder = Order.Create(model);
+			using var context = new SoftwareInstallationDatabase();
+			var newOrder = Order.Create(context, model);
 
             if (newOrder == null)
             {
                 return null;
             }
 
-            using var context = new SoftwareInstallationDatabase();
-
             context.Orders.Add(newOrder);
             context.SaveChanges();
 
@@ -83,7 +82,7 @@ namespace SoftwareInstallationDatabaseImplement.Implements
         {
             using var context = new SoftwareInstallationDatabase();
 
-            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
+            var order = context.Orders.Include(x => x.Package).FirstOrDefault(x => x.Id == model.Id);
 
             if (order == null)
             {

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Implements/ShopStorage.cs

@@ -0,0 +1,178 @@
+using Microsoft.EntityFrameworkCore;
+using SoftwareInstallationContracts.BindingModels;
+using SoftwareInstallationContracts.SearchModels;
+using SoftwareInstallationContracts.StoragesContracts;
+using SoftwareInstallationContracts.ViewModels;
+using SoftwareInstallationDatabaseImplement.Models;
+using SoftwareInstallationDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SoftwareInstallationDatabaseImplement.Implements
+{
+	public class ShopStorage : IShopStorage
+	{
+		public ShopViewModel? Delete(ShopBindingModel model)
+		{
+			using var context = new SoftwareInstallationDatabase();
+
+			var element = context.Shops
+				.Include(x => x.Packages)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Shops.Remove(element);
+				context.SaveChanges();
+
+				return element.GetViewModel;
+			}
+
+			return null;
+		}
+
+		public ShopViewModel? GetElement(ShopSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new SoftwareInstallationDatabase();
+
+			return context.Shops
+				.Include(x => x.Packages)
+				.ThenInclude(x => x.Package)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ShopName) && x.ShopName == model.ShopName) || (model.Id.HasValue && x.Id == model.Id))
+				?.GetViewModel;
+		}
+
+		public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ShopName))
+			{
+				return new();
+			}
+
+			using var context = new SoftwareInstallationDatabase();
+
+			return context.Shops
+					.Include(x => x.Packages)
+					.ThenInclude(x => x.Package)
+					.Where(x => x.ShopName.Contains(model.ShopName))
+					.ToList()
+					.Select(x => x.GetViewModel)
+					.ToList();
+		}
+
+		public List<ShopViewModel> GetFullList()
+		{
+			using var context = new SoftwareInstallationDatabase();
+			return context.Shops
+					.Include(x => x.Packages)
+					.ThenInclude(x => x.Package)
+					.ToList()
+					.Select(x => x.GetViewModel)
+					.ToList();
+		}
+
+		public ShopViewModel? Insert(ShopBindingModel model)
+		{
+			using var context = new SoftwareInstallationDatabase();
+			var newShop = Shop.Create(context, model);
+			if (newShop == null)
+			{
+				return null;
+			}
+			context.Shops.Add(newShop);
+			context.SaveChanges();
+			return newShop.GetViewModel;
+		}
+
+		public bool SellPackage(IPackageModel model, int quantity)
+		{
+			using var context = new SoftwareInstallationDatabase();
+
+			if (context.Shops
+					.Include(x => x.Packages)
+					.ThenInclude(x => x.Package)
+					.ToList()
+					.Where(x => x.ShopPackages.ContainsKey(model.Id)).Select(x => x.PackageMaxCount).Sum() < quantity)
+			{
+				return false;
+			}
+
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				foreach (var Shop in context.Shops
+					.Include(x => x.Packages)
+					.ThenInclude(x => x.Package)
+					.ToList()
+					.Where(x => x.ShopPackages.ContainsKey(model.Id)))
+				{
+					int countInCurrentShop = Shop.ShopPackages[model.Id].Item2;
+					if (countInCurrentShop <= quantity)
+					{
+						var elem = context.ShopPackages
+							.Where(x => x.PackageId == model.Id)
+							.FirstOrDefault(x => x.ShopId == Shop.Id);
+						context.ShopPackages.Remove(elem);
+						Shop.ShopPackages.Remove(model.Id);
+						quantity -= countInCurrentShop;
+					}
+					else
+					{
+						Shop.ShopPackages[model.Id] = (Shop.ShopPackages[model.Id].Item1, countInCurrentShop - quantity);
+						quantity = 0;
+						Shop.UpdatePackage(context, new()
+						{
+							Id = Shop.Id,
+							ShopPackages = Shop.ShopPackages,
+						});
+					}
+					if (quantity == 0)
+					{
+						context.SaveChanges();
+						transaction.Commit();
+						return true;
+					}
+				}
+				transaction.Rollback();
+				return false;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public ShopViewModel? Update(ShopBindingModel model)
+		{
+			using var context = new SoftwareInstallationDatabase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var Shop = context.Shops.FirstOrDefault(rec => rec.Id == model.Id);
+				if (Shop == null)
+				{
+					return null;
+				}
+				Shop.Update(model);
+				Shop.UpdatePackage(context, model);
+				context.SaveChanges();
+				transaction.Commit();
+				return Shop.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+	}
+}

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Migrations/20240429151038_AddShopModel.Designer.cs

@@ -0,0 +1,248 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using SoftwareInstallationDatabaseImplement;
+
+#nullable disable
+
+namespace SoftwareInstallationDatabaseImplement.Migrations
+{
+    [DbContext(typeof(SoftwareInstallationDatabase))]
+    [Migration("20240429151038_AddShopModel")]
+    partial class AddShopModel
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.2")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder);
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("PackageId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("int");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PackageId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Package", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("PackageName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Packages");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.PackageComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PackageId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("PackageId");
+
+                    b.ToTable("PackageComponents");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("OpeningDate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("PackageMaxCount")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ShopAddress")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.ShopPackage", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PackageId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PackageId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopPackages");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Package", "Package")
+                        .WithMany("Orders")
+                        .HasForeignKey("PackageId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Package");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.PackageComponent", b =>
+                {
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Component", "Component")
+                        .WithMany("PackageComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Package", "Package")
+                        .WithMany("Components")
+                        .HasForeignKey("PackageId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Package");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.ShopPackage", b =>
+                {
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Package", "Package")
+                        .WithMany()
+                        .HasForeignKey("PackageId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Shop", "Shop")
+                        .WithMany("Packages")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Package");
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("PackageComponents");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Package", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("Packages");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Migrations/20240429151038_AddShopModel.cs

@@ -0,0 +1,78 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace SoftwareInstallationDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddShopModel : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Shops",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    ShopName = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    ShopAddress = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    OpeningDate = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    PackageMaxCount = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Shops", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ShopPackages",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    PackageId = table.Column<int>(type: "int", nullable: false),
+                    ShopId = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ShopPackages", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ShopPackages_Packages_PackageId",
+                        column: x => x.PackageId,
+                        principalTable: "Packages",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ShopPackages_Shops_ShopId",
+                        column: x => x.ShopId,
+                        principalTable: "Shops",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopPackages_PackageId",
+                table: "ShopPackages",
+                column: "PackageId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopPackages_ShopId",
+                table: "ShopPackages",
+                column: "ShopId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ShopPackages");
+
+            migrationBuilder.DropTable(
+                name: "Shops");
+        }
+    }
+}

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Migrations/SoftwareInstallationDatabaseModelSnapshot.cs

@@ -121,6 +121,59 @@ namespace SoftwareInstallationDatabaseImplement.Migrations
                     b.ToTable("PackageComponents");
                 });
 
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<DateTime>("OpeningDate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("PackageMaxCount")
+                        .HasColumnType("int");
+
+                    b.Property<string>("ShopAddress")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.ShopPackage", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("PackageId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("PackageId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopPackages");
+                });
+
             modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Order", b =>
                 {
                     b.HasOne("SoftwareInstallationDatabaseImplement.Models.Package", "Package")
@@ -151,6 +204,25 @@ namespace SoftwareInstallationDatabaseImplement.Migrations
                     b.Navigation("Package");
                 });
 
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.ShopPackage", b =>
+                {
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Package", "Package")
+                        .WithMany()
+                        .HasForeignKey("PackageId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("SoftwareInstallationDatabaseImplement.Models.Shop", "Shop")
+                        .WithMany("Packages")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Package");
+
+                    b.Navigation("Shop");
+                });
+
             modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Component", b =>
                 {
                     b.Navigation("PackageComponents");
@@ -162,6 +234,11 @@ namespace SoftwareInstallationDatabaseImplement.Migrations
 
                     b.Navigation("Orders");
                 });
+
+            modelBuilder.Entity("SoftwareInstallationDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("Packages");
+                });
 #pragma warning restore 612, 618
         }
     }

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Models/Order.cs

@@ -33,7 +33,7 @@ namespace SoftwareInstallationDatabaseImplement.Models
 
         public virtual Package Package { get; set; }
 
-        public static Order? Create(OrderBindingModel? model)
+        public static Order? Create(SoftwareInstallationDatabase context, OrderBindingModel? model)
         {
             if (model == null)
             {
@@ -48,8 +48,9 @@ namespace SoftwareInstallationDatabaseImplement.Models
                 Sum = model.Sum,
                 Status = model.Status,
                 DateCreate = model.DateCreate,
-                DateImplement = model.DateImplement
-            };
+                DateImplement = model.DateImplement,
+                Package = context.Packages.First(x => x.Id == model.PackageId)
+			};
         }
 
         public void Update(OrderBindingModel model)

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Models/Shop.cs

@@ -0,0 +1,110 @@
+using SoftwareInstallationDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SoftwareInstallationContracts.BindingModels;
+using SoftwareInstallationContracts.ViewModels;
+
+namespace SoftwareInstallationDatabaseImplement.Models
+{
+	public class Shop : IShopModel
+	{
+		[Required]
+		public string ShopName { get; private set; } = string.Empty;
+		[Required]
+		public string ShopAddress { get; private set; } = string.Empty;
+		[Required]
+		public DateTime OpeningDate { get; private set; }
+		[Required]
+		public int PackageMaxCount { get; private set; }
+
+		public int Id { get; private set; }
+
+
+		private Dictionary<int, (IPackageModel, int)> _ShopPackages = null;
+		[NotMapped]
+		public Dictionary<int, (IPackageModel, int)> ShopPackages
+		{
+			get
+			{
+				if (_ShopPackages == null)
+				{
+					_ShopPackages = Packages
+							.ToDictionary(recPC => recPC.PackageId, recPC => (recPC.Package as IPackageModel, recPC.Count));
+				}
+				return _ShopPackages;
+			}
+		}
+
+		[ForeignKey("ShopId")]
+		public virtual List<ShopPackage> Packages { get; set; } = new();
+
+		public static Shop Create(SoftwareInstallationDatabase context, ShopBindingModel model)
+		{
+			return new Shop()
+			{
+				Id = model.Id,
+				ShopName = model.ShopName,
+				ShopAddress = model.ShopAddress,
+				OpeningDate = model.OpeningDate,
+				PackageMaxCount = model.PackageMaxCount,
+				Packages = model.ShopPackages.Select(x => new ShopPackage
+				{
+					Package = context.Packages.First(y => y.Id == x.Key),
+					Count = x.Value.Item2
+				}).ToList()
+			};
+		}
+
+		public void Update(ShopBindingModel model)
+		{
+			ShopName = model.ShopName;
+			ShopAddress = model.ShopAddress;
+			OpeningDate = model.OpeningDate;
+			PackageMaxCount = model.PackageMaxCount;
+		}
+
+		public ShopViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ShopName = ShopName,
+			ShopAddress = ShopAddress,
+			OpeningDate = OpeningDate,
+			PackageMaxCount = PackageMaxCount,
+			ShopPackages = ShopPackages
+		};
+
+		public void UpdatePackage(SoftwareInstallationDatabase context, ShopBindingModel model)
+		{
+			var ShopPackages = context.ShopPackages.Where(rec => rec.ShopId == model.Id).ToList();
+			if (ShopPackages != null && ShopPackages.Count > 0)
+			{   // удалили те, которых нет в модели
+				context.ShopPackages.RemoveRange(ShopPackages.Where(rec => !model.ShopPackages.ContainsKey(rec.PackageId)));
+				context.SaveChanges();
+				// обновили количество у существующих записей
+				foreach (var updatePackage in ShopPackages)
+				{
+					updatePackage.Count = model.ShopPackages[updatePackage.PackageId].Item2;
+					model.ShopPackages.Remove(updatePackage.PackageId);
+				}
+				context.SaveChanges();
+			}
+			var Shop = context.Shops.First(x => x.Id == Id);
+			foreach (var sp in model.ShopPackages)
+			{
+				context.ShopPackages.Add(new ShopPackage
+				{
+					Shop = Shop,
+					Package = context.Packages.First(x => x.Id == sp.Key),
+					Count = sp.Value.Item2
+				});
+				context.SaveChanges();
+			}
+			_ShopPackages = null;
+		}
+	}
+}

SoftwareInstallation/SoftwareInstallationDatabaseImplement/Models/ShopPackage.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SoftwareInstallationDatabaseImplement.Models
+{
+	public class ShopPackage
+	{
+		public int Id { get; set; }
+
+		[Required]
+		public int PackageId { get; set; }
+
+		[Required]
+		public int ShopId { get; set; }
+
+		[Required]
+		public int Count { get; set; }
+
+		public virtual Shop Shop { get; set; } = new();
+
+		public virtual Package Package { get; set; } = new();
+	}
+}

SoftwareInstallation/SoftwareInstallationDatabaseImplement/SoftwareInstallationDatabase.cs

@@ -15,7 +15,7 @@ namespace SoftwareInstallationDatabaseImplement
         {
             if (optionsBuilder.IsConfigured == false)
             {
-                optionsBuilder.UseSqlServer(@"Data Source=DESKTOP-SPMUS7R;Initial Catalog=SoftwareInstallationDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+                optionsBuilder.UseSqlServer(@"Data Source=DESKTOP-SPMUS7R;Initial Catalog=SoftwareInstallationHardDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
             }
             base.OnConfiguring(optionsBuilder);
         }
@@ -23,5 +23,7 @@ namespace SoftwareInstallationDatabaseImplement
         public virtual DbSet<Package> Packages { set; get; }
         public virtual DbSet<PackageComponent> PackageComponents { set; get; }
         public virtual DbSet<Order> Orders { set; get; }
-    }
+		public virtual DbSet<Shop> Shops { set; get; }
+		public virtual DbSet<ShopPackage> ShopPackages { set; get; }
+	}
 }