diff --git a/MotorPlant/MotorPlantDatabaseImplement/Engine.cs b/MotorPlant/MotorPlantDatabaseImplement/Engine.cs
index 8a51aae..004be91 100644
--- a/MotorPlant/MotorPlantDatabaseImplement/Engine.cs
+++ b/MotorPlant/MotorPlantDatabaseImplement/Engine.cs
@@ -33,6 +33,8 @@ namespace MotorPlantDatabaseImplement.Models
         public virtual List<EngineComponent> Components { get; set; } = new();
         [ForeignKey("EngineId")]
         public virtual List<Order> Orders { get; set; } = new();
+        [ForeignKey("EngineId")]
+        public virtual List<ShopEngines> ShopEngines { get; set; } = new();
         public static Engine Create(MotorPlantDataBase context,
         EngineBindingModel model)
         {
diff --git a/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.Designer.cs b/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.Designer.cs
similarity index 67%
rename from MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.Designer.cs
rename to MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.Designer.cs
index 9e32da0..b68afd1 100644
--- a/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.Designer.cs
+++ b/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.Designer.cs
@@ -12,7 +12,7 @@ using MotorPlantDatabaseImplement;
 namespace MotorPlantDatabaseImplement.Migrations
 {
     [DbContext(typeof(MotorPlantDataBase))]
-    [Migration("20240308215333_InitialCreate")]
+    [Migration("20240502092321_Initial-Create")]
     partial class InitialCreate
     {
         /// <inheritdoc />
@@ -124,6 +124,59 @@ namespace MotorPlantDatabaseImplement.Migrations
                     b.ToTable("Orders");
                 });
 
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Adress")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("EngineMaxCount")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("OpeningDate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.ShopEngines", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("EngineId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("EngineId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopEngines");
+                });
+
             modelBuilder.Entity("MotorPlantDatabaseImplement.Models.EngineComponent", b =>
                 {
                     b.HasOne("MotorPlantDatabaseImplement.Models.Component", "Component")
@@ -152,6 +205,25 @@ namespace MotorPlantDatabaseImplement.Migrations
                         .IsRequired();
                 });
 
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.ShopEngines", b =>
+                {
+                    b.HasOne("MotorPlantDatabaseImplement.Models.Engine", "Engine")
+                        .WithMany("ShopEngines")
+                        .HasForeignKey("EngineId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("MotorPlantDatabaseImplement.Models.Shop", "Shop")
+                        .WithMany("Engines")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Engine");
+
+                    b.Navigation("Shop");
+                });
+
             modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Component", b =>
                 {
                     b.Navigation("EngineComponents");
@@ -162,6 +234,13 @@ namespace MotorPlantDatabaseImplement.Migrations
                     b.Navigation("Components");
 
                     b.Navigation("Orders");
+
+                    b.Navigation("ShopEngines");
+                });
+
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("Engines");
                 });
 #pragma warning restore 612, 618
         }
diff --git a/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.cs b/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.cs
similarity index 66%
rename from MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.cs
rename to MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.cs
index a857529..8f45944 100644
--- a/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240308215333_InitialCreate.cs
+++ b/MotorPlant/MotorPlantDatabaseImplement/Migrations/20240502092321_Initial-Create.cs
@@ -39,6 +39,22 @@ namespace MotorPlantDatabaseImplement.Migrations
                     table.PrimaryKey("PK_Engines", x => x.Id);
                 });
 
+            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),
+                    Adress = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    OpeningDate = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    EngineMaxCount = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Shops", x => x.Id);
+                });
+
             migrationBuilder.CreateTable(
                 name: "EngineComponents",
                 columns: table => new
@@ -90,6 +106,33 @@ namespace MotorPlantDatabaseImplement.Migrations
                         onDelete: ReferentialAction.Cascade);
                 });
 
+            migrationBuilder.CreateTable(
+                name: "ShopEngines",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    EngineId = 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_ShopEngines", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ShopEngines_Engines_EngineId",
+                        column: x => x.EngineId,
+                        principalTable: "Engines",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ShopEngines_Shops_ShopId",
+                        column: x => x.ShopId,
+                        principalTable: "Shops",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
             migrationBuilder.CreateIndex(
                 name: "IX_EngineComponents_ComponentId",
                 table: "EngineComponents",
@@ -104,6 +147,16 @@ namespace MotorPlantDatabaseImplement.Migrations
                 name: "IX_Orders_EngineId",
                 table: "Orders",
                 column: "EngineId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopEngines_EngineId",
+                table: "ShopEngines",
+                column: "EngineId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopEngines_ShopId",
+                table: "ShopEngines",
+                column: "ShopId");
         }
 
         /// <inheritdoc />
@@ -115,11 +168,17 @@ namespace MotorPlantDatabaseImplement.Migrations
             migrationBuilder.DropTable(
                 name: "Orders");
 
+            migrationBuilder.DropTable(
+                name: "ShopEngines");
+
             migrationBuilder.DropTable(
                 name: "Components");
 
             migrationBuilder.DropTable(
                 name: "Engines");
+
+            migrationBuilder.DropTable(
+                name: "Shops");
         }
     }
 }
diff --git a/MotorPlant/MotorPlantDatabaseImplement/Migrations/MotorPlantDataBaseModelSnapshot.cs b/MotorPlant/MotorPlantDatabaseImplement/Migrations/MotorPlantDataBaseModelSnapshot.cs
index 7479b8f..db6ef98 100644
--- a/MotorPlant/MotorPlantDatabaseImplement/Migrations/MotorPlantDataBaseModelSnapshot.cs
+++ b/MotorPlant/MotorPlantDatabaseImplement/Migrations/MotorPlantDataBaseModelSnapshot.cs
@@ -121,6 +121,59 @@ namespace MotorPlantDatabaseImplement.Migrations
                     b.ToTable("Orders");
                 });
 
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Adress")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<int>("EngineMaxCount")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("OpeningDate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.ShopEngines", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("EngineId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("EngineId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopEngines");
+                });
+
             modelBuilder.Entity("MotorPlantDatabaseImplement.Models.EngineComponent", b =>
                 {
                     b.HasOne("MotorPlantDatabaseImplement.Models.Component", "Component")
@@ -149,6 +202,25 @@ namespace MotorPlantDatabaseImplement.Migrations
                         .IsRequired();
                 });
 
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.ShopEngines", b =>
+                {
+                    b.HasOne("MotorPlantDatabaseImplement.Models.Engine", "Engine")
+                        .WithMany("ShopEngines")
+                        .HasForeignKey("EngineId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("MotorPlantDatabaseImplement.Models.Shop", "Shop")
+                        .WithMany("Engines")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Engine");
+
+                    b.Navigation("Shop");
+                });
+
             modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Component", b =>
                 {
                     b.Navigation("EngineComponents");
@@ -159,6 +231,13 @@ namespace MotorPlantDatabaseImplement.Migrations
                     b.Navigation("Components");
 
                     b.Navigation("Orders");
+
+                    b.Navigation("ShopEngines");
+                });
+
+            modelBuilder.Entity("MotorPlantDatabaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("Engines");
                 });
 #pragma warning restore 612, 618
         }
diff --git a/MotorPlant/MotorPlantDatabaseImplement/MotorPlantDataBase.cs b/MotorPlant/MotorPlantDatabaseImplement/MotorPlantDataBase.cs
index 41ab4eb..74c0884 100644
--- a/MotorPlant/MotorPlantDatabaseImplement/MotorPlantDataBase.cs
+++ b/MotorPlant/MotorPlantDatabaseImplement/MotorPlantDataBase.cs
@@ -16,7 +16,7 @@ optionsBuilder)
         {
             if (optionsBuilder.IsConfigured == false)
             {
-                optionsBuilder.UseSqlServer(@"Data Source=DESKTOP-ETBGTEE;Initial Catalog=MotorPlantDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+                optionsBuilder.UseSqlServer(@"Data Source=DESKTOP-ETBGTEE;Initial Catalog=MotorPlantHardDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
             }
             base.OnConfiguring(optionsBuilder);
         }
@@ -24,6 +24,7 @@ optionsBuilder)
         public virtual DbSet<Engine> Engines { set; get; }
         public virtual DbSet<EngineComponent> EngineComponents { set; get; }
         public virtual DbSet<Order> Orders { set; get; }
-
+        public virtual DbSet<Shop> Shops { get; set; }
+        public virtual DbSet<ShopEngines> ShopEngines { get; set; }
     }
 }
diff --git a/MotorPlant/MotorPlantDatabaseImplement/Shop.cs b/MotorPlant/MotorPlantDatabaseImplement/Shop.cs
new file mode 100644
index 0000000..1e56eab
--- /dev/null
+++ b/MotorPlant/MotorPlantDatabaseImplement/Shop.cs
@@ -0,0 +1,107 @@
+using MotorPlantContracts.BindingModels;
+using MotorPlantContracts.ViewModels;
+using MotorPlantDataModels.Models;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MotorPlantDatabaseImplement.Models
+{
+    public class Shop : IShopModel
+    {
+        public int Id { get; set; }
+        public string ShopName { get; set; } = string.Empty;
+        public string Adress { get; set; } = string.Empty;
+        public DateTime OpeningDate { get; set; }
+        public int EngineMaxCount { get; set; }
+        private Dictionary<int, (IEngineModel, int)>? _shopEngines = null;
+        public Dictionary<int, (IEngineModel, int)> ShopEngines
+        {
+            get
+            {
+                if (_shopEngines == null)
+                {
+                    if (_shopEngines == null)
+                    {
+                        _shopEngines = Engines
+                                .ToDictionary(recSP => recSP.EngineId, recSP => (recSP.Engine as IEngineModel, recSP.Count));
+                    }
+                    return _shopEngines;
+                }
+                return _shopEngines;
+            }
+        }
+
+        [ForeignKey("ShopId")]
+        public List<ShopEngines> Engines { get; set; } = new();
+        public static Shop Create(MotorPlantDataBase context, ShopBindingModel model)
+        {
+            return new Shop()
+            {
+                Id = model.Id,
+                ShopName = model.ShopName,
+                Adress = model.Adress,
+                OpeningDate = model.OpeningDate,
+                Engines = model.ShopEngines.Select(x => new ShopEngines
+                {
+                    Engine = context.Engines.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList(),
+                EngineMaxCount = model.EngineMaxCount
+            };
+        }
+        public void Update(ShopBindingModel model)
+        {
+            ShopName = model.ShopName;
+            Adress = model.Adress;
+            OpeningDate = model.OpeningDate;
+            EngineMaxCount = model.EngineMaxCount;
+        }
+        public ShopViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ShopName = ShopName,
+            Adress = Adress,
+            OpeningDate = OpeningDate,
+            ShopEngines = ShopEngines,
+            EngineMaxCount = EngineMaxCount
+        };
+        public void UpdateEngines(MotorPlantDataBase context, ShopBindingModel model)
+        {
+            var ShopEngines = context.ShopEngines.Where(rec => rec.ShopId == model.Id).ToList();
+            if (ShopEngines != null && ShopEngines.Count > 0)
+            {
+                context.ShopEngines.RemoveRange(ShopEngines.Where(rec => !model.ShopEngines.ContainsKey(rec.EngineId)));
+                context.SaveChanges();
+                ShopEngines = context.ShopEngines.Where(rec => rec.ShopId == model.Id).ToList();
+                foreach (var updateEngine in ShopEngines)
+                {
+                    updateEngine.Count = model.ShopEngines[updateEngine.EngineId].Item2;
+                    model.ShopEngines.Remove(updateEngine.EngineId);
+                }
+                context.SaveChanges();
+            }
+            var shop = context.Shops.First(x => x.Id == Id);
+            foreach (var ar in model.ShopEngines)
+            {
+                context.ShopEngines.Add(new ShopEngines
+                {
+                    Shop = shop,
+                    Engine = context.Engines.First(x => x.Id == ar.Key),
+                    Count = ar.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _shopEngines = null;
+        }
+        public void EnginesDictionatyUpdate(MotorPlantDataBase context)
+        {
+            UpdateEngines(context, new ShopBindingModel
+            {
+                Id = Id,
+                ShopEngines = ShopEngines,
+            });
+        }
+    }
+}
diff --git a/MotorPlant/MotorPlantDatabaseImplement/ShopEngines.cs b/MotorPlant/MotorPlantDatabaseImplement/ShopEngines.cs
new file mode 100644
index 0000000..69a9f38
--- /dev/null
+++ b/MotorPlant/MotorPlantDatabaseImplement/ShopEngines.cs
@@ -0,0 +1,24 @@
+using MotorPlantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MotorPlantDatabaseImplement.Models
+{
+    public class ShopEngines
+    {
+        public int Id { get; set; }
+        [Required]
+        public int EngineId { get; set; }
+        [Required]
+        public int ShopId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Shop Shop { get; set; } = new();
+        public virtual Engine Engine { get; set; } = new();
+    }
+}
diff --git a/MotorPlant/MotorPlantDatabaseImplement/ShopStorage.cs b/MotorPlant/MotorPlantDatabaseImplement/ShopStorage.cs
new file mode 100644
index 0000000..61d9d34
--- /dev/null
+++ b/MotorPlant/MotorPlantDatabaseImplement/ShopStorage.cs
@@ -0,0 +1,182 @@
+using Microsoft.EntityFrameworkCore;
+using MotorPlantContracts.BindingModels;
+using MotorPlantContracts.SearchModels;
+using MotorPlantContracts.StoragesContracts;
+using MotorPlantContracts.ViewModels;
+using MotorPlantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MotorPlantDatabaseImplement.Implements
+{
+    public class ShopStorage : IShopStorage
+    {
+        public List<ShopViewModel> GetFullList()
+        {
+            using var context = new MotorPlantDataBase();
+            return context.Shops.Include(x => x.Engines).ThenInclude(x => x.Engine).ToList().
+                Select(x => x.GetViewModel).ToList();
+        }
+        public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ShopName))
+            {
+                return new();
+            }
+            using var context = new MotorPlantDataBase();
+            return context.Shops.Include(x => x.Engines).ThenInclude(x => x.Engine).Where(x => x.ShopName.Contains(model.ShopName)).
+                ToList().Select(x => x.GetViewModel).ToList();
+        }
+        public ShopViewModel? GetElement(ShopSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+            {
+                return new();
+            }
+            using var context = new MotorPlantDataBase();
+            return context.Shops.Include(x => x.Engines).ThenInclude(x => x.Engine)
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.ShopName) && x.ShopName == model.ShopName) ||
+                (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public ShopViewModel? Insert(ShopBindingModel model)
+        {
+            using var context = new MotorPlantDataBase();
+            var newShop = Shop.Create(context, model);
+            if (newShop == null)
+            {
+                return null;
+            }
+            context.Shops.Add(newShop);
+            context.SaveChanges();
+            return newShop.GetViewModel;
+        }
+        public ShopViewModel? Update(ShopBindingModel model)
+        {
+            using var context = new MotorPlantDataBase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var shop = context.Shops.FirstOrDefault(x => x.Id == model.Id);
+                if (shop == null)
+                {
+                    return null;
+                }
+                shop.Update(model);
+                context.SaveChanges();
+                shop.UpdateEngines(context, model);
+                transaction.Commit();
+                return shop.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        public ShopViewModel? Delete(ShopBindingModel model)
+        {
+            using var context = new MotorPlantDataBase();
+            var shop = context.Shops.Include(x => x.Engines).FirstOrDefault(x => x.Id == model.Id);
+            if (shop != null)
+            {
+                context.Shops.Remove(shop);
+                context.SaveChanges();
+                return shop.GetViewModel;
+            }
+            return null;
+        }
+        public bool RestockingShops(SupplyBindingModel model)
+        {
+            using var context = new MotorPlantDataBase();
+            var transaction = context.Database.BeginTransaction();
+            var Shops = context.Shops.Include(x => x.Engines).ThenInclude(x => x.Engine).ToList().
+                Where(x => x.EngineMaxCount > x.ShopEngines.Select(x => x.Value.Item2).Sum()).ToList();
+            if (model == null)
+            {
+                return false;
+            }
+            try
+            {
+                foreach (Shop shop in Shops)
+                {
+                    int difference = shop.EngineMaxCount - shop.ShopEngines.Select(x => x.Value.Item2).Sum();
+                    int refill = Math.Min(difference, model.Count);
+                    model.Count -= refill;
+                    if (shop.ShopEngines.ContainsKey(model.EngineId))
+                    {
+                        var datePair = shop.ShopEngines[model.EngineId];
+                        datePair.Item2 += refill;
+                        shop.ShopEngines[model.EngineId] = datePair;
+                    }
+                    else
+                    {
+                        var Engine = context.Engines.First(x => x.Id == model.EngineId);
+                        shop.ShopEngines.Add(model.EngineId, (Engine, refill));
+                    }
+                    shop.EnginesDictionatyUpdate(context);
+                    if (model.Count == 0)
+                    {
+                        transaction.Commit();
+                        return true;
+                    }
+                }
+                transaction.Rollback();
+                return false;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        public bool Sale(SupplySearchModel model)
+        {
+            using var context = new MotorPlantDataBase();
+            var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var shops = context.Shops.Include(x => x.Engines).ThenInclude(x => x.Engine).ToList().
+                    Where(x => x.ShopEngines.ContainsKey(model.EngineId.Value)).OrderByDescending(x => x.ShopEngines[model.EngineId.Value].Item2).ToList();
+
+                foreach (var shop in shops)
+                {
+                    int residue = model.Count.Value - shop.ShopEngines[model.EngineId.Value].Item2;
+                    if (residue > 0)
+                    {
+                        shop.ShopEngines.Remove(model.EngineId.Value);
+                        shop.EnginesDictionatyUpdate(context);
+                        context.SaveChanges();
+                        model.Count = residue;
+
+                    }
+                    else
+                    {
+                        if (residue == 0)
+                            shop.ShopEngines.Remove(model.EngineId.Value);
+                        else
+                        {
+                            var dataPair = shop.ShopEngines[model.EngineId.Value];
+                            dataPair.Item2 = -residue;
+                            shop.ShopEngines[model.EngineId.Value] = dataPair;
+                        }
+
+                        shop.EnginesDictionatyUpdate(context);
+                        transaction.Commit();
+                        return true;
+                    }
+                }
+                transaction.Rollback();
+                return false;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+    }
+}