30 changed files with 1165 additions and 10 deletions
--- a/FoodOrders/FoodOrders.sln
+++ b/FoodOrders/FoodOrders.sln
@ -9,9 +9,11 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FoodOrdersDataModels", "Foo
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FoodOrdersContracts", "FoodOrdersContracts\FoodOrdersContracts.csproj", "{5527E07B-9B94-4735-93FB-49267F0B8038}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodOrdersBusinessLogic", "FoodOrdersBusinessLogic\FoodOrdersBusinessLogic.csproj", "{4C44A99E-7D02-4D07-9714-9414423B560E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FoodOrdersBusinessLogic", "FoodOrdersBusinessLogic\FoodOrdersBusinessLogic.csproj", "{4C44A99E-7D02-4D07-9714-9414423B560E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodOrdersListImplement", "FoodOrdersListImplement\FoodOrdersListImplement.csproj", "{A4012AB3-40FB-4FF6-A55A-E593AB80A153}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FoodOrdersListImplement", "FoodOrdersListImplement\FoodOrdersListImplement.csproj", "{A4012AB3-40FB-4FF6-A55A-E593AB80A153}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FoodOrdersFileImplement", "FoodOrdersFileImplement\FoodOrdersFileImplement.csproj", "{E5B30B3F-30CF-4D4D-80E6-22A2EA20CC9C}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@ -39,6 +41,10 @@ Global
 		{A4012AB3-40FB-4FF6-A55A-E593AB80A153}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{A4012AB3-40FB-4FF6-A55A-E593AB80A153}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{A4012AB3-40FB-4FF6-A55A-E593AB80A153}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E5B30B3F-30CF-4D4D-80E6-22A2EA20CC9C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E5B30B3F-30CF-4D4D-80E6-22A2EA20CC9C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E5B30B3F-30CF-4D4D-80E6-22A2EA20CC9C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E5B30B3F-30CF-4D4D-80E6-22A2EA20CC9C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
--- a/FoodOrders/FoodOrders/FoodOrdersView.csproj
+++ b/FoodOrders/FoodOrders/FoodOrdersView.csproj
@ -27,6 +27,7 @@
  <ItemGroup>
    <ProjectReference Include="..\FoodOrdersBusinessLogic\FoodOrdersBusinessLogic.csproj" />
    <ProjectReference Include="..\FoodOrdersContracts\FoodOrdersContracts.csproj" />
+    <ProjectReference Include="..\FoodOrdersFileImplement\FoodOrdersFileImplement.csproj" />
    <ProjectReference Include="..\FoodOrdersListImplement\FoodOrdersListImplement.csproj" />
  </ItemGroup>

--- a/FoodOrders/FoodOrders/FormCreateOrder.cs
+++ b/FoodOrders/FoodOrders/FormCreateOrder.cs
@ -45,9 +45,9 @@ namespace FoodOrdersView
                try
                {
                    int id = Convert.ToInt32(comboBoxDish.SelectedValue);
-                    var product = _logicD.ReadElement(new DishSearchModel { Id = id });
+                    var dish = _logicD.ReadElement(new DishSearchModel { Id = id });
                    int count = Convert.ToInt32(textBoxCount.Text);
-                    textBoxSum.Text = Math.Round(count * (product?.Price ?? 0), 2).ToString();
+                    textBoxSum.Text = Math.Round(count * (dish?.Price ?? 0), 2).ToString();
                    _logger.LogInformation("Расчет суммы заказа");
                }
                catch (Exception ex)
--- a/FoodOrders/FoodOrders/FormSellCars.Designer.cs
+++ b/FoodOrders/FoodOrders/FormSellCars.Designer.cs
@ -0,0 +1,120 @@
+namespace FoodOrdersView
+{
+    partial class FormSellDishes
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            buttonCancel = new Button();
+            buttonSell = new Button();
+            labelDish = new Label();
+            labelCount = new Label();
+            comboBoxDish = new ComboBox();
+            textBoxCount = new TextBox();
+            SuspendLayout();
+            // 
+            // buttonCancel
+            // 
+            buttonCancel.Location = new Point(383, 167);
+            buttonCancel.Name = "buttonCancel";
+            buttonCancel.Size = new Size(112, 34);
+            buttonCancel.TabIndex = 0;
+            buttonCancel.Text = "Отмена";
+            buttonCancel.UseVisualStyleBackColor = true;
+            buttonCancel.Click += ButtonCancel_Click;
+            // 
+            // buttonSell
+            // 
+            buttonSell.Location = new Point(265, 167);
+            buttonSell.Name = "buttonSell";
+            buttonSell.Size = new Size(112, 34);
+            buttonSell.TabIndex = 1;
+            buttonSell.Text = "Продать";
+            buttonSell.UseVisualStyleBackColor = true;
+            buttonSell.Click += ButtonSell_Click;
+            // 
+            // labelDish
+            // 
+            labelDish.AutoSize = true;
+            labelDish.Location = new Point(12, 37);
+            labelDish.Name = "labelDish";
+            labelDish.Size = new Size(118, 25);
+            labelDish.TabIndex = 2;
+            labelDish.Text = "Блюдо:";
+            // 
+            // labelCount
+            // 
+            labelCount.AutoSize = true;
+            labelCount.Location = new Point(12, 81);
+            labelCount.Name = "labelCount";
+            labelCount.Size = new Size(111, 25);
+            labelCount.TabIndex = 3;
+            labelCount.Text = "Количество:";
+            // 
+            // comboBoxDish
+            // 
+            comboBoxDish.DropDownStyle = ComboBoxStyle.DropDownList;
+            comboBoxDish.FormattingEnabled = true;
+            comboBoxDish.Location = new Point(129, 37);
+            comboBoxDish.Name = "comboBoxDish";
+            comboBoxDish.Size = new Size(318, 33);
+            comboBoxDish.TabIndex = 4;
+            // 
+            // textBoxCount
+            // 
+            textBoxCount.Location = new Point(129, 81);
+            textBoxCount.Name = "textBoxCount";
+            textBoxCount.Size = new Size(318, 31);
+            textBoxCount.TabIndex = 5;
+            // 
+            // FormSellDishes
+            // 
+            AutoScaleDimensions = new SizeF(10F, 25F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(507, 213);
+            Controls.Add(textBoxCount);
+            Controls.Add(comboBoxDish);
+            Controls.Add(labelCount);
+            Controls.Add(labelDish);
+            Controls.Add(buttonSell);
+            Controls.Add(buttonCancel);
+            Name = "FormSellDishes";
+            Text = "Продажа блюд";
+            Load += FormSellDishes_Load;
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+
+        private Button buttonCancel;
+        private Button buttonSell;
+        private Label labelDish;
+        private Label labelCount;
+        private ComboBox comboBoxDish;
+        private TextBox textBoxCount;
+    }
+}
--- a/FoodOrders/FoodOrders/FormSellCars.cs
+++ b/FoodOrders/FoodOrders/FormSellCars.cs
@ -0,0 +1,92 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.BusinessLogicsContracts;
+using FoodOrdersContracts.SearchModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace FoodOrdersView
+{
+    public partial class FormSellDishes : Form
+    {
+        private readonly ILogger _logger;
+        private readonly IDishLogic _logicC;
+        private readonly IShopLogic _logicS;
+        public FormSellDishes(ILogger<FormCreateOrder> logger, IDishLogic logicC, IShopLogic logicS)
+        {
+            InitializeComponent();
+            _logger = logger;
+            _logicC = logicC;
+            _logicS = logicS;
+        }
+
+        private void FormSellDishes_Load(object sender, EventArgs e)
+        {
+            _logger.LogInformation("Загрузка блюд под продажу");
+            try
+            {
+                var list = _logicC.ReadList(null);
+                if (list != null)
+                {
+                    comboBoxDish.DisplayMember = "DishName";
+                    comboBoxDish.ValueMember = "Id";
+                    comboBoxDish.DataSource = list;
+                    comboBoxDish.SelectedItem = null;
+                }
+
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка загрузки списка блюд");
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        private void ButtonSell_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxCount.Text))
+            {
+                MessageBox.Show("Заполните поле 'Количество'", "Ошибка",
+               MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (comboBoxDish.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите блюдо", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            _logger.LogInformation("Продажа блюд");
+            try
+            {
+                var operationResult = _logicS.SellDishes(_logicC.ReadElement
+                    (new DishSearchModel { DishName = comboBoxDish.Text})!,
+                    Convert.ToInt32(textBoxCount.Text));
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при продаже блюд. В магазинах недостаточно блюд.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение",
+                    MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка продажи блюд");
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+            }
+        }
+        private void ButtonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}
--- a/FoodOrders/FoodOrders/FormSellCars.resx
+++ b/FoodOrders/FoodOrders/FormSellCars.resx
@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
--- a/FoodOrders/FoodOrders/FormShop.Designer.cs
+++ b/FoodOrders/FoodOrders/FormShop.Designer.cs
@ -41,6 +41,8 @@
            this.textBoxAddress = new System.Windows.Forms.TextBox();
            this.labelDateOfOpening = new System.Windows.Forms.Label();
            this.dateTimePicker = new System.Windows.Forms.DateTimePicker();
+            this.textBoxCapacity = new System.Windows.Forms.TextBox();
+            this.labelCapacity = new System.Windows.Forms.Label();
            this.groupBox.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
            this.SuspendLayout();
@ -157,11 +159,31 @@
            this.dateTimePicker.Size = new System.Drawing.Size(200, 23);
            this.dateTimePicker.TabIndex = 6;
            // 
+            // textBoxCapacity
+            // 
+            this.textBoxCapacity.Location = new System.Drawing.Point(417, 57);
+            this.textBoxCapacity.Margin = new System.Windows.Forms.Padding(2);
+            this.textBoxCapacity.Name = "textBoxCapacity";
+            this.textBoxCapacity.Size = new System.Drawing.Size(200, 23);
+            this.textBoxCapacity.TabIndex = 10;
+            // 
+            // labelCapacity
+            // 
+            this.labelCapacity.AutoSize = true;
+            this.labelCapacity.Location = new System.Drawing.Point(324, 60);
+            this.labelCapacity.Margin = new System.Windows.Forms.Padding(2, 0, 2, 0);
+            this.labelCapacity.Name = "labelCapacity";
+            this.labelCapacity.Size = new System.Drawing.Size(80, 15);
+            this.labelCapacity.TabIndex = 9;
+            this.labelCapacity.Text = "Вместимость";
+            // 
            // FormShop
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(639, 335);
+            this.Controls.Add(this.textBoxCapacity);
+            this.Controls.Add(this.labelCapacity);
            this.Controls.Add(this.dateTimePicker);
            this.Controls.Add(this.labelDateOfOpening);
            this.Controls.Add(this.textBoxAddress);
@ -194,5 +216,7 @@
        private TextBox textBoxAddress;
        private Label labelDateOfOpening;
        private DateTimePicker dateTimePicker;
+        private TextBox textBoxCapacity;
+        private Label labelCapacity;
    }
 }
--- a/FoodOrders/FoodOrders/FormShop.cs
+++ b/FoodOrders/FoodOrders/FormShop.cs
@ -35,6 +35,7 @@ namespace FoodOrdersView
                        textBoxName.Text = view.ShopName;
                        textBoxAddress.Text = view.Address;
                        dateTimePicker.Value = view.DateOfOpening;
+                        textBoxCapacity.Text = view.Capacity.ToString();
                        _shopDishes = view.ShopDishes ?? new Dictionary<int, (IDishModel, int)>();
                        LoadData();
                    }
@ -81,6 +82,11 @@ namespace FoodOrdersView
               MessageBoxIcon.Error);
                return;
            }
+            if (string.IsNullOrEmpty(textBoxCapacity.Text) || dataGridView.Rows.Cast<DataGridViewRow>().Sum(x => Convert.ToInt32(x.Cells[2].Value)) > Convert.ToInt32(textBoxCapacity.Text))
+            {
+               MessageBox.Show("Заполните вместимость корректно", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+               return;
+            }
            _logger.LogInformation("Сохранение магазина");
            try
            {
@ -90,7 +96,8 @@ namespace FoodOrdersView
                    ShopName = textBoxName.Text,
                    Address = textBoxAddress.Text,
                    DateOfOpening = dateTimePicker.Value.Date,
-                    ShopDishes = _shopDishes
+                    ShopDishes = _shopDishes,
+                    Capacity = Convert.ToInt32(textBoxCapacity.Text)
                };
                var operationResult = _id.HasValue ? _logicS.Update(model) : _logicS.Create(model);
                if (!operationResult)
--- a/FoodOrders/FoodOrders/FormShops.Designer.cs
+++ b/FoodOrders/FoodOrders/FormShops.Designer.cs
@ -33,6 +33,7 @@
            this.buttonDelete = new System.Windows.Forms.Button();
            this.buttonUpdate = new System.Windows.Forms.Button();
            this.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonSellDishes = new System.Windows.Forms.Button();
            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
            this.SuspendLayout();
            // 
@ -85,11 +86,23 @@
            this.dataGridView.Size = new System.Drawing.Size(404, 342);
            this.dataGridView.TabIndex = 4;
            // 
+            // buttonSellDishes
+            // 
+            this.buttonSellDishes.Location = new System.Drawing.Point(409, 264);
+            this.buttonSellDishes.Margin = new System.Windows.Forms.Padding(2);
+            this.buttonSellDishes.Name = "buttonSellDishes";
+            this.buttonSellDishes.Size = new System.Drawing.Size(133, 23);
+            this.buttonSellDishes.TabIndex = 6;
+            this.buttonSellDishes.Text = "Продажа блюд";
+            this.buttonSellDishes.UseVisualStyleBackColor = true;
+            this.buttonSellDishes.Click += new System.EventHandler(this.ButtonSellDishes_Click);
+            // 
            // FormShops
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(554, 342);
+            this.Controls.Add(this.buttonSellDishes);
            this.Controls.Add(this.dataGridView);
            this.Controls.Add(this.buttonUpdate);
            this.Controls.Add(this.buttonDelete);
@ -110,5 +123,6 @@
        private Button buttonDelete;
        private Button buttonUpdate;
        private DataGridView dataGridView;
+        private Button buttonSellDishes;
    }
 }
--- a/FoodOrders/FoodOrders/FormShops.cs
+++ b/FoodOrders/FoodOrders/FormShops.cs
@ -95,5 +95,16 @@ namespace FoodOrdersView
                }
            }
        }
+        private void ButtonSellDishes_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormSellDishes));
+            if (service is FormSellDishes form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
    }
 }
--- a/FoodOrders/FoodOrders/Program.cs
+++ b/FoodOrders/FoodOrders/Program.cs
@ -3,7 +3,7 @@ using FoodOrdersContracts.StoragesContracts;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;
-using FoodOrdersListImplement.Implements;
+using FoodOrdersFileImplement.Implements;
 using FoodOrdersBusinessLogic.BusinessLogics;

 namespace FoodOrdersView
@ -54,6 +54,7 @@ namespace FoodOrdersView
            services.AddTransient<FormShops>();
            services.AddTransient<FormShop>();
            services.AddTransient<FormDeliveryDishes>();
+            services.AddTransient<FormSellDishes>();
        }
    }
 }
--- a/FoodOrders/FoodOrdersBusinessLogic/BusinessLogics/OrderLogic.cs
+++ b/FoodOrders/FoodOrdersBusinessLogic/BusinessLogics/OrderLogic.cs
@ -12,10 +12,14 @@ namespace FoodOrdersBusinessLogic.BusinessLogics
    {
        private readonly ILogger _logger;
        private readonly IOrderStorage _orderStorage;
-        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        private readonly IShopLogic _logicS;
+        private readonly IDishStorage _dishStorage;
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage, IShopLogic logicS, IDishStorage dishStorage)
        {
            _logger = logger;
            _orderStorage = orderStorage;
+            _logicS = logicS;
+            _dishStorage = dishStorage;
        }

        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
@ -110,6 +114,10 @@ namespace FoodOrdersBusinessLogic.BusinessLogics
            {
                model.DateImplement = viewModel.DateImplement;
            }
+            if (model.Status == OrderStatus.Выдан && !_logicS.AddDishes(_dishStorage.GetElement(new DishSearchModel { Id = viewModel.DishId })!, viewModel.Count))
+            {
+                throw new Exception("В магазинах нет места под блюда из заказа.");
+            }
            CheckModel(model, false);
            if (_orderStorage.Update(model) == null)
            {
--- a/FoodOrders/FoodOrdersBusinessLogic/BusinessLogics/ShopLogic.cs
+++ b/FoodOrders/FoodOrdersBusinessLogic/BusinessLogics/ShopLogic.cs
@ -60,6 +60,10 @@ namespace FoodOrdersBusinessLogic.BusinessLogics
                _logger.LogWarning("Shop not found");
                return false;
            }
+            if (element.Capacity - element.ShopDishes.Sum(x => x.Value.Item2) < count)
+            {
+                throw new InvalidOperationException("В магазине нет места под такое количество блюд");
+            }
            if (element.ShopDishes.ContainsKey(dish.Id))
            {
                element.ShopDishes[dish.Id] = (dish, element.ShopDishes[dish.Id].Item2 + count);
@ -74,7 +78,8 @@ namespace FoodOrdersBusinessLogic.BusinessLogics
                ShopName = element.ShopName,
                Address = element.Address,
                DateOfOpening = element.DateOfOpening,
-                ShopDishes = element.ShopDishes
+                ShopDishes = element.ShopDishes,
+                Capacity = element.Capacity
            });
            return true;
        }
@ -144,5 +149,36 @@ namespace FoodOrdersBusinessLogic.BusinessLogics
                throw new InvalidOperationException("Магазин с таким названием уже есть");
            }
        }
+        public bool SellDishes(IDishModel dish, int count)
+        {
+            return _shopStorage.SellDishes(dish, count);
+        }
+        public bool AddDishes(IDishModel dish, int count)
+        {
+            if (dish == null || count < 1)
+            {
+                return false;
+            }
+            List<ShopViewModel> shopsList = _shopStorage.GetFullList();
+            if (shopsList.Sum(x => x.Capacity) - shopsList.Sum(x => x.ShopDishes.Sum(y => y.Value.Item2)) < count)
+            {
+                return false;
+            }
+            foreach (ShopViewModel shop in shopsList)
+            {
+                int emptySpace = shop.Capacity - shop.ShopDishes.Sum(x => x.Value.Item2);
+                if (emptySpace < count)
+                {
+                    DeliveryDishes(new ShopSearchModel { Id = shop.Id }, dish, emptySpace);
+                    count -= emptySpace;
+                }
+                else
+                {
+                    DeliveryDishes(new ShopSearchModel { Id = shop.Id }, dish, count);
+                    break;
+                }
+            }
+            return true;
+        }
    }
 }
--- a/FoodOrders/FoodOrdersContracts/BindingModels/ShopBindingModel.cs
+++ b/FoodOrders/FoodOrdersContracts/BindingModels/ShopBindingModel.cs
@ -9,5 +9,6 @@ namespace FoodOrdersContracts.BindingModels
        public string Address { get; set; } = string.Empty;
        public DateTime DateOfOpening { get; set; } = DateTime.Now;
        public Dictionary<int, (IDishModel, int)> ShopDishes { get; set; } = new();
+        public int Capacity { get; set; }
    }
 }
--- a/FoodOrders/FoodOrdersContracts/BuisnessLogicsContracts/IShopLogic.cs
+++ b/FoodOrders/FoodOrdersContracts/BuisnessLogicsContracts/IShopLogic.cs
@ -13,5 +13,7 @@ namespace FoodOrdersContracts.BusinessLogicsContracts
        bool Update(ShopBindingModel model);
        bool Delete(ShopBindingModel model);
        bool DeliveryDishes(ShopSearchModel model, IDishModel dish, int count);
+        bool SellDishes(IDishModel dish, int count);
+        bool AddDishes(IDishModel dish, int count);
    }
 }
--- a/FoodOrders/FoodOrdersContracts/StoragesContracts/IShopStorage.cs
+++ b/FoodOrders/FoodOrdersContracts/StoragesContracts/IShopStorage.cs
@ -1,6 +1,7 @@
 using FoodOrdersContracts.BindingModels;
 using FoodOrdersContracts.SearchModels;
 using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Models;

 namespace FoodOrdersContracts.StoragesContracts
 {
@ -12,5 +13,6 @@ namespace FoodOrdersContracts.StoragesContracts
        ShopViewModel? Insert(ShopBindingModel model);
        ShopViewModel? Update(ShopBindingModel model);
        ShopViewModel? Delete(ShopBindingModel model);
+        bool SellDishes(IDishModel dish, int count);
    }
 }
--- a/FoodOrders/FoodOrdersContracts/ViewModels/ShopViewModel.cs
+++ b/FoodOrders/FoodOrdersContracts/ViewModels/ShopViewModel.cs
@ -12,6 +12,8 @@ namespace FoodOrdersContracts.ViewModels
        public string Address { get; set; } = string.Empty;
        [DisplayName("Дата открытия")]
        public DateTime DateOfOpening { get; set; } = DateTime.Now;
+        [DisplayName("Вместимость")]
+        public int Capacity { get; set; } = 0;
        public Dictionary<int, (IDishModel, int)> ShopDishes { get; set; } = new();
    }
 }
--- a/FoodOrders/FoodOrdersDataModels/Models/IShopModel.cs
+++ b/FoodOrders/FoodOrdersDataModels/Models/IShopModel.cs
@ -6,5 +6,6 @@
        string Address { get; }
        DateTime DateOfOpening { get; }
        Dictionary<int, (IDishModel, int)> ShopDishes { get; }
+        int Capacity { get; }
    }
 }
--- a/FoodOrders/FoodOrdersFileImplement/DataFileSingleton.cs
+++ b/FoodOrders/FoodOrdersFileImplement/DataFileSingleton.cs
@ -0,0 +1,52 @@
+using FoodOrdersFileImplement.Models;
+using System.Xml.Linq;
+namespace FoodOrdersFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string DishFileName = "Dish.xml";
+        private readonly string ShopFileName = "Shop.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Dish> Dishes { get; private set; }
+        public List<Shop> Shops { get; private set; }
+        public static DataFileSingleton GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new DataFileSingleton();
+            }
+            return instance;
+        }
+        public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
+        public void SaveDishes() => SaveData(Dishes, DishFileName, "Dishes", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        public void SaveShops() => SaveData(Shops, ShopFileName, "Shops", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Dishes = LoadData(DishFileName, "Dish", x => Dish.Create(x)!)!;
+            Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+            Shops = LoadData(ShopFileName, "Shop", x => Shop.Create(x)!)!;
+        }
+        private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
+        {
+            if (File.Exists(filename))
+            {
+                return XDocument.Load(filename)?.Root?.Elements(xmlNodeName)?.Select(selectFunction)?.ToList();
+            }
+            return new List<T>();
+        }
+        private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
+        {
+            if (data != null)
+            {
+                new XDocument(new XElement(xmlNodeName, data.Select(selectFunction).ToArray())).Save(filename);
+            }
+        }
+    }
+}
+
--- a/FoodOrders/FoodOrdersFileImplement/FoodOrdersFileImplement.csproj
+++ b/FoodOrders/FoodOrdersFileImplement/FoodOrdersFileImplement.csproj
@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\FoodOrdersContracts\FoodOrdersContracts.csproj" />
+    <ProjectReference Include="..\FoodOrdersDataModels\FoodOrdersDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/FoodOrders/FoodOrdersFileImplement/Implements/ComponentStorage.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Implements/ComponentStorage.cs
@ -0,0 +1,74 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersFileImplement.Models;
+using FoodOrdersFileImplement;
+
+namespace FoodOrdersFileImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataFileSingleton _source;
+        public ComponentStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+        public List<ComponentViewModel> GetFullList()
+        {
+            return _source.Components.Select(x => x.GetViewModel).ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            return _source.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        //FirstOrDefault выбирается первый или ничего, то есть вернёт первое совпадение или null
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return _source.Components.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = _source.Components.Count > 0 ? _source.Components.Max(x => x.Id) + 1 : 1;
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            _source.Components.Add(newComponent);
+            _source.SaveComponents();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            var component = _source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            _source.SaveComponents();
+            return component.GetViewModel;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            var element = _source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                _source.Components.Remove(element);
+                _source.SaveComponents();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Implements/DishStorage.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Implements/DishStorage.cs
@ -0,0 +1,74 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersFileImplement.Models;
+using System.Reflection.Metadata;
+
+namespace FoodOrdersFileImplement.Implements
+{
+    public class DishStorage : IDishStorage
+    {
+        private readonly DataFileSingleton _source;
+        public DishStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+        public List<DishViewModel> GetFullList()
+        {
+            return _source.Dishes.Select(x => x.GetViewModel).ToList();
+        }
+        public List<DishViewModel> GetFilteredList(DishSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.DishName))
+            {
+                return new();
+            }
+            return _source.Dishes.Where(x => x.DishName.Contains(model.DishName)).Select(x => x.GetViewModel).ToList();
+        }
+        public DishViewModel? GetElement(DishSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.DishName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return _source.Dishes.FirstOrDefault(x => (!string.IsNullOrEmpty(model.DishName) && x.DishName == model.DishName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public DishViewModel? Insert(DishBindingModel model)
+        {
+            model.Id = _source.Dishes.Count > 0 ? _source.Dishes.Max(x => x.Id) + 1 : 1;
+            var newDoc = Dish.Create(model);
+            if (newDoc == null)
+            {
+                return null;
+            }
+            _source.Dishes.Add(newDoc);
+            _source.SaveDishes();
+            return newDoc.GetViewModel;
+        }
+
+        public DishViewModel? Update(DishBindingModel model)
+        {
+            var dish = _source.Dishes.FirstOrDefault(x => x.Id == model.Id);
+            if (dish == null)
+            {
+                return null;
+            }
+            dish.Update(model);
+            _source.SaveDishes();
+            return dish.GetViewModel;
+        }
+
+        public DishViewModel? Delete(DishBindingModel model)
+        {
+            var document = _source.Dishes.FirstOrDefault(x => x.Id == model.Id);
+            if (document == null)
+            {
+                return null;
+            }
+            document.Update(model);
+            _source.SaveDishes();
+            return document.GetViewModel;
+        }
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Implements/OrderStorage.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Implements/OrderStorage.cs
@ -0,0 +1,84 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersFileImplement.Models;
+using System.Reflection;
+using System.Security.Cryptography.X509Certificates;
+
+namespace FoodOrdersFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton _source;
+        public OrderStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+        public List<OrderViewModel> GetFullList()
+        {
+            return _source.Orders.Select(x => GetViewModel(x)).ToList();
+        }
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+            return _source.Orders.Where(x => x.Id == model.Id).Select(x => GetViewModel(x)).ToList();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return _source.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        private OrderViewModel GetViewModel(Order order)
+        {
+            var viewModel = order.GetViewModel;
+            viewModel.DishName = _source.Dishes.FirstOrDefault(x => (x.Id == order.DishId))?.DishName;
+            return viewModel;
+        }
+
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            var order = _source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            order.Update(model);
+            _source.SaveOrders();
+            return order.GetViewModel;
+        }
+
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            model.Id = _source.Orders.Count > 0 ? _source.Orders.Max(x => x.Id) + 1 : 1;
+            var newOrder = Order.Create(model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+            _source.Orders.Add(newOrder);
+            _source.SaveOrders();
+            return newOrder.GetViewModel;
+        }
+
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            var order = _source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            order.Update(model);
+            _source.SaveOrders();
+            return order.GetViewModel;
+        }
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Implements/ShopStorage.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Implements/ShopStorage.cs
@ -0,0 +1,123 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Models;
+using FoodOrdersFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoodOrdersFileImplement.Implements
+{
+    public class ShopStorage : IShopStorage
+    {
+        private readonly DataFileSingleton source;
+        public ShopStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public ShopViewModel? Delete(ShopBindingModel model)
+        {
+            var element = source.Shops.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Shops.Remove(element);
+                source.SaveShops();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public ShopViewModel? GetElement(ShopSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Shops
+            .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();
+            }
+            return source.Shops
+            .Where(x => x.ShopName.Contains(model.ShopName))
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+
+        public List<ShopViewModel> GetFullList()
+        {
+            return source.Shops.Select(x => x.GetViewModel).ToList();
+        }
+
+        public ShopViewModel? Insert(ShopBindingModel model)
+        {
+            model.Id = source.Shops.Count > 0 ? source.Shops.Max(x =>
+           x.Id) + 1 : 1;
+            var newShop = Shop.Create(model);
+            if (newShop == null)
+            {
+                return null;
+            }
+            source.Shops.Add(newShop);
+            source.SaveShops();
+            return newShop.GetViewModel;
+        }
+
+        public ShopViewModel? Update(ShopBindingModel model)
+        {
+            var shop = source.Shops.FirstOrDefault(x => x.Id ==
+           model.Id);
+            if (shop == null)
+            {
+                return null;
+            }
+            shop.Update(model);
+            source.SaveShops();
+            return shop.GetViewModel;
+        }
+        public bool SellDishes(IDishModel dish, int count)
+        {
+            if (dish == null || count < 1) return false;
+            List<Shop> shopsWithDish = source.Shops.Where(x => x.ShopDishes.ContainsKey(dish.Id)).ToList();
+            if (shopsWithDish.Sum(x => x.ShopDishes[dish.Id].Item2) < count)
+            {
+                return false;
+            }
+            foreach(var shop in shopsWithDish)
+            {
+                int dishInShopCount = shop.ShopDishes[dish.Id].Item2;
+                if(count - dishInShopCount >= 0)
+                {
+                    count -= dishInShopCount;
+                    shop.ShopDishes.Remove(dish.Id);
+                }
+                else
+                {
+                    shop.ShopDishes[dish.Id] = (dish, shop.ShopDishes[dish.Id].Item2 - count);
+                    count = 0;
+                }
+                Update(new ShopBindingModel
+                {
+                    Id = shop.Id,
+                    ShopName = shop.ShopName,
+                    Address = shop.Address,
+                    DateOfOpening = shop.DateOfOpening,
+                    ShopDishes = shop.ShopDishes,
+                    Capacity = shop.Capacity
+                });
+                if (count == 0) break;
+            }
+            return true;
+        }
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Models/Component.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Models/Component.cs
@ -0,0 +1,60 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Models;
+using System.Xml.Linq;
+namespace FoodOrdersFileImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        public string ComponentName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Component? Create(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public static Component? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComponentName = element.Element("ComponentName")!.Value,
+                Cost = Convert.ToDouble(element.Element("Cost")!.Value)
+            };
+        }
+        public void Update(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+        public XElement GetXElement => new(
+            "Component",
+            new XAttribute("Id", Id),
+            new XElement("ComponentName", ComponentName),
+            new XElement("Cost", Cost.ToString())
+        );
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Models/Dish.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Models/Dish.cs
@ -0,0 +1,94 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Models;
+using FoodOrdersFileImplement;
+using System.Xml.Linq;
+namespace FoodOrdersFileImplement.Models
+{
+    public class Dish : IDishModel
+    {
+        public int Id { get; private set; }
+
+        public string DishName { get; private set; } = string.Empty;
+
+        public double Price { get; private set; }
+
+        //словарь для файла, так как нам в файле нужно хранить просто id компонента и его количество
+        public Dictionary<int, int> Components { get; private set; } = new();
+
+        private Dictionary<int, (IComponentModel, int)>? _dishComponents = null;
+
+        public Dictionary<int, (IComponentModel, int)> DishComponents
+        {
+            get
+            {
+                if (_dishComponents == null)
+                {
+                    var _source = DataFileSingleton.GetInstance();
+                    _dishComponents = Components.ToDictionary(x => x.Key, y => ((_source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!, y.Value));
+                }
+                return _dishComponents;
+            }
+        }
+        public static Dish? Create(DishBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Dish()
+            {
+                Id = model.Id,
+                DishName = model.DishName,
+                Price = model.Price,
+                Components = model.DishComponents.ToDictionary(x => x.Key, x => x.Value.Item2)
+            };
+        }
+        public static Dish? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Dish()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                DishName = element.Element("DishName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components = element.Element("DishComponents")!.Elements("DishComponent").ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(DishBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            DishName = model.DishName;
+            Price = model.Price;
+            Components = model.DishComponents.ToDictionary(x => x.Key, x => x.Value.Item2);
+            //обнуляем словарь, чтобы в случае обновления, у нас был в дальнейшем сформирован актуальный словарь
+            // с помощью get метода
+            _dishComponents = null;
+        }
+        public DishViewModel GetViewModel => new()
+        {
+            Id = Id,
+            DishName = DishName,
+            Price = Price,
+            DishComponents = DishComponents
+        };
+
+        public XElement GetXElement => new(
+            "Dish",
+            new XAttribute("Id", Id),
+            new XElement("DishName", DishName),
+            new XElement("Price", Price.ToString()),
+            new XElement("DishComponents", Components.Select(x =>
+                new XElement("DishComponent",
+                new XElement("Key", x.Key),
+                new XElement("Value", x.Value))).ToArray()
+            )
+        );
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Models/Order.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Models/Order.cs
@ -0,0 +1,86 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Enums;
+using FoodOrdersDataModels.Models;
+using System.Reflection.Metadata;
+using System.Xml.Linq;
+
+namespace FoodOrdersFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+        public int DishId { get; private set; }
+        public int Count { get; private set; }
+        public double Sum { get; private set; }
+        public OrderStatus Status { get; private set; }
+        public DateTime DateCreate { get; private set; }
+        public DateTime? DateImplement { get; private set; }
+
+        public static Order? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                DishId = Convert.ToInt32(element.Element("DishId")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Status = (OrderStatus)Enum.Parse(typeof(OrderStatus), element.Element("Status")!.Value),
+                DateCreate = Convert.ToDateTime(element.Element("DateCreate")!.Value),
+                DateImplement = string.IsNullOrEmpty(element.Element("DateImplement")!.Value) ? null : Convert.ToDateTime(element.Element("DateImplement")!.Value)
+            };
+        }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order
+            {
+                Id = model.Id,
+                DishId = model.DishId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement,
+            };
+        }
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            DishId = DishId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+
+        public XElement GetXElement => new(
+          "Order",
+           new XAttribute("Id", Id),
+           new XElement("DishId", DishId.ToString()),
+           new XElement("Count", Count.ToString()),
+           new XElement("Sum", Sum.ToString()),
+           new XElement("Status", Status.ToString()),
+           new XElement("DateCreate", DateCreate.ToString()),
+           new XElement("DateImplement", DateImplement.ToString())
+      );
+    }
+}
--- a/FoodOrders/FoodOrdersFileImplement/Models/Shop.cs
+++ b/FoodOrders/FoodOrdersFileImplement/Models/Shop.cs
@ -0,0 +1,97 @@
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.ViewModels;
+using FoodOrdersDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace FoodOrdersFileImplement.Models
+{
+    public class Shop : IShopModel
+    {
+        public string ShopName { get; private set; } = string.Empty;
+        public string Address { get; private set; } = string.Empty;
+        public DateTime DateOfOpening { get; private set; } = DateTime.Now;
+        public int Capacity { get; private set; } = 0;
+        public int Id { get; private set; }
+        public Dictionary<int, int> Dishes { get; private set; } = new();
+        public Dictionary<int, (IDishModel, int)>? _shopDishes = null;
+        public Dictionary<int, (IDishModel, int)> ShopDishes
+        {
+            get
+            {
+                if (_shopDishes == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _shopDishes = Dishes.ToDictionary(x => x.Key, y =>
+                    ((source.Dishes.FirstOrDefault(z => z.Id == y.Key) as IDishModel)!, y.Value));
+                }
+                return _shopDishes;
+            }
+        }
+        public static Shop? Create(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = model.Id,
+                ShopName = model.ShopName,
+                Address = model.Address,
+                DateOfOpening = model.DateOfOpening,
+                Dishes = model.ShopDishes.ToDictionary(x => x.Key, x => x.Value.Item2),
+                Capacity = model.Capacity
+            };
+        }
+        public static Shop? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ShopName = element.Element("ShopName")!.Value,
+                Address = element.Element("Address")!.Value,
+                DateOfOpening = Convert.ToDateTime(element.Element("DateOfOpening")!.Value),
+                Dishes = element.Element("ShopDishes")!.Elements("ShopDish").ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value)),
+                Capacity = Convert.ToInt32(element.Element("Capacity")!.Value)
+            };
+        }
+        public void Update(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ShopName = model.ShopName;
+            Address = model.Address;
+            DateOfOpening = model.DateOfOpening;
+            Dishes = model.ShopDishes.ToDictionary(x => x.Key, x => x.Value.Item2);
+            Capacity = model.Capacity;
+        }
+        public ShopViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ShopName = ShopName,
+            Address = Address,
+            DateOfOpening = DateOfOpening,
+            ShopDishes = ShopDishes,
+            Capacity = Capacity
+        };
+        public XElement GetXElement => new("Shop",
+        new XAttribute("Id", Id),
+        new XElement("ShopName", ShopName),
+        new XElement("Address", Address),
+        new XElement("DateOfOpening", DateOfOpening.ToString()),
+        new XElement("ShopDishes", Dishes.Select(x => new XElement("ShopDish", new XElement("Key", x.Key), new XElement("Value", x.Value))).ToArray()),
+        new XElement("Capacity",Capacity.ToString()));
+    }
+}
--- a/FoodOrders/FoodOrdersListImplement/Implements/ShopStorage.cs
+++ b/FoodOrders/FoodOrdersListImplement/Implements/ShopStorage.cs
@ -3,6 +3,7 @@ using FoodOrdersContracts.SearchModels;
 using FoodOrdersContracts.StoragesContracts;
 using FoodOrdersContracts.ViewModels;
 using FoodOrdersListImplement.Models;
+using FoodOrdersDataModels.Models;

 namespace FoodOrdersListImplement.Implements
 {
@ -96,5 +97,9 @@ namespace FoodOrdersListImplement.Implements
            }
            return null;
        }
+        public bool SellDishes(IDishModel dish, int count)
+        {
+            throw new NotImplementedException();
+        }
    }
 }
--- a/FoodOrders/FoodOrdersListImplement/Models/Shop.cs
+++ b/FoodOrders/FoodOrdersListImplement/Models/Shop.cs
@ -13,6 +13,7 @@ namespace FoodOrdersListImplement.Models
        public string Address { get; private set; } = string.Empty;
        public DateTime DateOfOpening { get; private set; } = DateTime.Now;
        public Dictionary<int, (IDishModel, int)> ShopDishes { get; private set; } = new Dictionary<int, (IDishModel, int)>();
+        public int Capacity { get; private set; } = 0;
        public static Shop? Create(ShopBindingModel? model)
        {
            if (model == null)
@ -25,7 +26,8 @@ namespace FoodOrdersListImplement.Models
                ShopName = model.ShopName,
                Address = model.Address,
                DateOfOpening = model.DateOfOpening,
-                ShopDishes = model.ShopDishes
+                ShopDishes = model.ShopDishes,
+                Capacity = model.Capacity
            };
        }
        public void Update(ShopBindingModel? model)
@ -38,6 +40,7 @@ namespace FoodOrdersListImplement.Models
            Address = model.Address;
            DateOfOpening = model.DateOfOpening;
            ShopDishes = model.ShopDishes;
+            Capacity = model.Capacity;
        }
        public ShopViewModel GetViewModel => new()
        {
@ -45,7 +48,8 @@ namespace FoodOrdersListImplement.Models
            ShopName = ShopName,
            Address = Address,
            DateOfOpening = DateOfOpening,
-            ShopDishes = ShopDishes
+            ShopDishes = ShopDishes,
+            Capacity = Capacity
        };
    }
 }