лабораторная 2

ComputersShop/ComputersShop.sln

@@ -3,15 +3,17 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.1.32421.90
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopView", "ComputersShop\ComputersShopView.csproj", "{44901912-5016-4C1D-8FB0-B4AF6577D27D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopView", "ComputersShop\ComputersShopView.csproj", "{44901912-5016-4C1D-8FB0-B4AF6577D27D}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopDataModels", "ComputersShopDataModels\ComputersShopDataModels.csproj", "{C89D20B1-2A19-4652-9477-C5EA596FAE58}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopDataModels", "ComputersShopDataModels\ComputersShopDataModels.csproj", "{C89D20B1-2A19-4652-9477-C5EA596FAE58}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{188B642F-C773-4F09-A369-C64849A768AE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{188B642F-C773-4F09-A369-C64849A768AE}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{946DAAFE-F189-4516-9DDB-3E77ED4B8665}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{946DAAFE-F189-4516-9DDB-3E77ED4B8665}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopListImplement", "ComputersShopImplement\ComputersShopListImplement.csproj", "{DA9CE365-F11F-4607-9003-C9EABE4198BB}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopListImplement", "ComputersShopImplement\ComputersShopListImplement.csproj", "{DA9CE365-F11F-4607-9003-C9EABE4198BB}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopFileImplement", "ComputersShopFileImplement\ComputersShopFileImplement.csproj", "{E40EB0BF-429F-4D39-BD09-E7E2F28F9086}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +41,10 @@ Global
 		{DA9CE365-F11F-4607-9003-C9EABE4198BB}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{DA9CE365-F11F-4607-9003-C9EABE4198BB}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{DA9CE365-F11F-4607-9003-C9EABE4198BB}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E40EB0BF-429F-4D39-BD09-E7E2F28F9086}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E40EB0BF-429F-4D39-BD09-E7E2F28F9086}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E40EB0BF-429F-4D39-BD09-E7E2F28F9086}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E40EB0BF-429F-4D39-BD09-E7E2F28F9086}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ComputersShop/ComputersShop/ComputersShopView.csproj

@@ -26,6 +26,7 @@
   <ItemGroup>
     <ProjectReference Include="..\ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj" />
     <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopFileImplement\ComputersShopFileImplement.csproj" />
     <ProjectReference Include="..\ComputersShopImplement\ComputersShopListImplement.csproj" />
   </ItemGroup>
 

ComputersShop/ComputersShop/Program.cs

@@ -1,7 +1,7 @@
 using ComputersShopBusinessLogic;
 using ComputersShopContracts.BusinessLogicsContracts;
 using ComputersShopContracts.StoragesContracts;
-using ComputersShopListImplement.Implements;
+using ComputersShopFileImplement.Implements;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;

ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs

@@ -0,0 +1,53 @@
+using ComputersShopFileImplement.Models;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement
+{
+    internal class DataFileSingleton
+    {
+
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string ComputerFileName = "Computer.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Computer> Computers { 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 SaveComputers() => SaveData(Computers, ComputerFileName, "Computers", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Computers = LoadData(ComputerFileName, "Computer", x => Computer.Create(x)!)!;
+            Orders = LoadData(OrderFileName, "Order", x => Order.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);
+            }
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,85 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+
+namespace ComputersShopFileImplement.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();
+        }
+        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;
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,75 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        private readonly DataFileSingleton source;
+        public ComputerStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<ComputerViewModel> GetFullList()
+        {
+            return source.Computers
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return new();
+            }
+            return source.Computers
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Computers.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) && x.ComputerName == model.ComputerName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            model.Id = source.Computers.Count > 0 ? source.Computers.Max(x => x.Id) + 1 : 1;
+            var newComputer = Computer.Create(model);
+            if (newComputer == null)
+            {
+                return null;
+            }
+            source.Computers.Add(newComputer);
+            source.SaveComputers();
+            return newComputer.GetViewModel;
+        }
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            var manufacture = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (manufacture == null)
+            {
+                return null;
+            }
+            manufacture.Update(model);
+            source.SaveComputers();
+            return manufacture.GetViewModel;
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            var element = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Computers.Remove(element);
+                source.SaveComputers();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,87 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        private OrderViewModel AddManufactureName(OrderViewModel model)
+        {
+            model.ComputerName = source.Computers.SingleOrDefault(x => x.Id == model.ComputerId)?.ComputerName ?? string.Empty;
+            return model;
+        }
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders
+                .Select(x => AddManufactureName(x.GetViewModel))
+                .ToList();
+        }
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (model.Id == null)
+            {
+                return new();
+            }
+            return source.Orders
+                .Where(x => x.Id == model.Id)
+                .Select(x => AddManufactureName(x.GetViewModel))
+                .ToList();
+        }
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            var order = source.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+            if (order == null)
+            {
+                return null;
+            }
+            return AddManufactureName(order);
+        }
+        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;
+        }
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            var element = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Orders.Remove(element);
+                source.SaveOrders();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
+

ComputersShop/ComputersShopFileImplement/Models/Component.cs

@@ -0,0 +1,59 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.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()));
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Computer.cs

@@ -0,0 +1,76 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; private set; }
+        public string ComputerName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, int> Components { get; private set; } = new();
+        private Dictionary<int, (IComponentModel, int)>? _computerComponents = null;
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get
+            {
+                if (_computerComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _computerComponents = Components.ToDictionary(x => x.Key, y => ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!, y.Value));
+                }
+                return _computerComponents;
+            }
+        }
+        public static Computer? Create(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                Components = model.ComputerComponents.ToDictionary(x => x.Key, x
+               => x.Value.Item2)
+            };
+        }
+        public static Computer? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerName = element.Element("ComputerName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components = element.Element("ComputerComponents")!.Elements("ComputerComponent").ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+            Components = model.ComputerComponents.ToDictionary(x => x.Key, x => x.Value.Item2);
+            _computerComponents = null;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+        public XElement GetXElement => new("Computer", new XAttribute("Id", Id), new XElement("ComputerName", ComputerName), new XElement("Price", Price.ToString()), new XElement("ComputerComponents", Components.Select(x => new XElement("ComputerComponent", new XElement("Key", x.Key), new XElement("Value", x.Value))).ToArray()));
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Order.cs

@@ -0,0 +1,101 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+
+        public int ComputerId { get; private set; }
+
+        public int Count { get; private set; }
+
+        public double Sum { get; private set; }
+
+        public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+
+        public DateTime DateCreate { get; set; } = DateTime.Now;
+
+        public DateTime? DateImplement { get; set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ComputerId = model.ComputerId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement
+            };
+        }
+
+        public static Order? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            DateTime? dateImplement = null;
+            if (element.Element("DateImplement")!.Value != "")
+            {
+                dateImplement = Convert.ToDateTime(element.Element("DateImplement")!.Value);
+            }
+            return new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerId = Convert.ToInt32(element.Element("ComputerId")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Status = (OrderStatus)Convert.ToInt32(element.Element("Status")!.Value),
+                DateCreate = Convert.ToDateTime(element.Element("DateCreate")!.Value),
+                DateImplement = dateImplement
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            if (model.DateImplement != null)
+            {
+                DateImplement = model.DateImplement;
+            }
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerId = ComputerId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+
+        public XElement GetXElement => new
+       (
+       "Order",
+       new XAttribute("Id", Id),
+       new XElement("ComputerId", ComputerId),
+       new XElement("Count", Count),
+       new XElement("Sum", Sum),
+       new XElement("Status", (int)Status),
+       new XElement("DateCreate", DateCreate),
+       new XElement("DateImplement", DateImplement)
+       );
+    }
+}