test

SushiBar/SushiBarFileImplement/DataFileSingleton.cs

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+using SushiBarFileImplement.Models;
+using System.Xml.Linq;
+
+namespace SushiBarFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string IngredientFileName = "Ingredient.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string SushiFileName = "Sushi.xml";
+        public List<Ingredient> Ingredients { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Sushi> ListSushi { get; private set; }
+        public static DataFileSingleton GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new DataFileSingleton();
+            }
+            return instance;
+        }
+        public void SaveIngredients() => SaveData(Ingredients, IngredientFileName,
+            "Ingredients", x => x.GetXElement);
+        public void SaveListSushi() => SaveData(ListSushi, SushiFileName,
+            "ListSushi", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Ingredients = LoadData(IngredientFileName, "Ingredient", x => Ingredient.Create(x)!)!;
+            ListSushi = LoadData(SushiFileName, "Sushi", x => Sushi.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);
+            }
+        }
+    }
+}

SushiBar/SushiBarFileImplement/Implements/IngredientStorage.cs

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+using SushiBarContracts.BindingModels;
+using SushiBarContracts.SearchModels;
+using SushiBarContracts.StoragesContracts;
+using SushiBarContracts.ViewModels;
+using SushiBarFileImplement.Models;
+
+namespace SushiBarFileImplement.Implements
+{
+    public class IngredientStorage : IIngredientStorage
+    {
+        private readonly DataFileSingleton source;
+        public IngredientStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<IngredientViewModel> GetFullList()
+        {
+            return source.Ingredients.Select(x => x.GetViewModel).ToList();
+        }
+        public List<IngredientViewModel> GetFilteredList(IngredientSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.IngredientName))
+            {
+                return new();
+            }
+            return source.Ingredients.Where(x => 
+                x.IngredientName.Contains(model.IngredientName)).Select(x => x.GetViewModel).ToList();
+        }
+        public IngredientViewModel? GetElement(IngredientSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.IngredientName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Ingredients.FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.IngredientName) && x.IngredientName == 
+                model.IngredientName) || (model.Id.HasValue && x.Id == model.Id)) ?.GetViewModel;
+        }
+        public IngredientViewModel? Insert(IngredientBindingModel model)
+        {
+            model.Id = source.Ingredients.Count > 0 ? source.Ingredients.Max(x => x.Id) + 1 : 1;
+            var newIngredient = Ingredient.Create(model);
+            if (newIngredient == null)
+            {
+                return null;
+            }
+            source.Ingredients.Add(newIngredient);
+            source.SaveIngredients();
+            return newIngredient.GetViewModel;
+        }
+        public IngredientViewModel? Update(IngredientBindingModel model)
+        {
+            var ingredient = source.Ingredients.FirstOrDefault(x => x.Id == model.Id);
+            if (ingredient == null)
+            {
+                return null;
+            }
+            ingredient.Update(model);
+            source.SaveIngredients();
+            return ingredient.GetViewModel;
+        }
+        public IngredientViewModel? Delete(IngredientBindingModel model)
+        {
+            var element = source.Ingredients.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Ingredients.Remove(element);
+                source.SaveIngredients();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

SushiBar/SushiBarFileImplement/Implements/OrderStorage.cs

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+using SushiBarContracts.BindingModels;
+using SushiBarContracts.SearchModels;
+using SushiBarContracts.StoragesContracts;
+using SushiBarContracts.ViewModels;
+using SushiBarFileImplement.Models;
+
+namespace SushiBarFileImplement.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.Equals(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;
+            foreach (var sushi in source.ListSushi)
+            {
+                if (sushi.Id == order.SushiId)
+                {
+                    viewModel.SushiName = sushi.SushiName;
+                    break;
+                }
+            }
+            return viewModel;
+        }
+        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 GetViewModel(newOrder);
+        }
+
+        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 GetViewModel(order);
+        }
+
+        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 GetViewModel(element);
+            }
+            return null;
+        }
+    }
+}

SushiBar/SushiBarFileImplement/Implements/SushiStorage.cs

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+using SushiBarContracts.BindingModels;
+using SushiBarContracts.SearchModels;
+using SushiBarContracts.StoragesContracts;
+using SushiBarContracts.ViewModels;
+using SushiBarFileImplement.Models;
+
+namespace SushiBarFileImplement.Implements
+{
+    public class SushiStorage : ISushiStorage
+    {
+        private readonly DataFileSingleton source;
+        public SushiStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<SushiViewModel> GetFullList()
+        {
+            return source.ListSushi.Select(x => x.GetViewModel).ToList();
+        }
+        public List<SushiViewModel> GetFilteredList(SushiSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.SushiName))
+            {
+                return new();
+            }
+            return source.ListSushi.Where(x =>
+                x.SushiName.Contains(model.SushiName)).Select(x => x.GetViewModel).ToList();
+        }
+        public SushiViewModel? GetElement(SushiSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.SushiName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.ListSushi.FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.SushiName) && x.SushiName ==
+                model.SushiName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+        public SushiViewModel? Insert(SushiBindingModel model)
+        {
+            model.Id = source.ListSushi.Count > 0 ? source.ListSushi.Max(x => x.Id) + 1 : 1;
+            var newSushi = Sushi.Create(model);
+            if (newSushi == null)
+            {
+                return null;
+            }
+            source.ListSushi.Add(newSushi);
+            source.SaveListSushi();
+            return newSushi.GetViewModel;
+        }
+        public SushiViewModel? Update(SushiBindingModel model)
+        {
+            var sushi = source.ListSushi.FirstOrDefault(x => x.Id == model.Id);
+            if (sushi == null)
+            {
+                return null;
+            }
+            sushi.Update(model);
+            source.SaveListSushi();
+            return sushi.GetViewModel;
+        }
+        public SushiViewModel? Delete(SushiBindingModel model)
+        {
+            var element = source.ListSushi.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.ListSushi.Remove(element);
+                source.SaveListSushi();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

SushiBar/SushiBarFileImplement/Models/Ingredient.cs

@@ -0,0 +1,59 @@
+using SushiBarContracts.BindingModels;
+using SushiBarContracts.ViewModels;
+using SushiBarDataModels.Models;
+using System.Xml.Linq;
+
+namespace SushiBarFileImplement.Models
+{
+    public class Ingredient : IIngredientModel
+    {
+        public int Id { get; private set; }
+        public string IngredientName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Ingredient? Create(IngredientBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Ingredient()
+            {
+                Id = model.Id,
+                IngredientName = model.IngredientName,
+                Cost = model.Cost
+            };
+        }
+        public static Ingredient? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Ingredient()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                IngredientName = element.Element("IngredientName")!.Value,
+                Cost = Convert.ToDouble(element.Element("Cost")!.Value)
+            };
+        }
+        public void Update(IngredientBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            IngredientName = model.IngredientName;
+            Cost = model.Cost;
+        }
+        public IngredientViewModel GetViewModel => new()
+        {
+            Id = Id,
+            IngredientName = IngredientName,
+            Cost = Cost
+        };
+        public XElement GetXElement => new("Ingredient",
+        new XAttribute("Id", Id),
+        new XElement("IngredientName", IngredientName),
+        new XElement("Cost", Cost.ToString()));
+    }
+}

SushiBar/SushiBarFileImplement/Models/Order.cs

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+using SushiBarContracts.BindingModels;
+using SushiBarContracts.ViewModels;
+using SushiBarDataModels.Enums;
+using SushiBarDataModels.Models;
+using System.Xml.Linq;
+
+namespace SushiBarFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+        public int SushiId { get; private set; }
+        public int Count { get; private set; }
+        public double Sum { get; private set; }
+        public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;
+        public DateTime DateCreate { get; private set; } = DateTime.Now;
+        public DateTime? DateImplement { get; private set; }
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                SushiId = model.SushiId,
+                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;
+            }
+            return new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                SushiId = Convert.ToInt32(element.Element("SushiId")!.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 void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            SushiId = SushiId,
+            Count = Count,
+            Sum = Sum,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+            Id = Id,
+            Status = Status,
+        };
+
+        public XElement GetXElement => new("Order",
+          new XAttribute("Id", Id),
+          new XElement("SushiId", SushiId),
+          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()));
+    }
+}

SushiBar/SushiBarFileImplement/Models/Sushi.cs

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+using SushiBarContracts.BindingModels;
+using SushiBarContracts.ViewModels;
+using SushiBarDataModels.Models;
+using System.Xml.Linq;
+
+namespace SushiBarFileImplement.Models
+{
+    public class Sushi : ISushiModel
+    {
+        public int Id { get; private set; }
+        public string SushiName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, int> Ingredients { get; private set; } = new();
+        private Dictionary<int, (IIngredientModel, int)>? _productIngredients = null;
+        public Dictionary<int, (IIngredientModel, int)> SushiIngredients
+        {
+            get
+            {
+                if (_productIngredients == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _productIngredients = Ingredients.ToDictionary(x => x.Key, y => ((source.Ingredients.FirstOrDefault(z => z.Id == y.Key) as IIngredientModel)!, y.Value));
+                }
+                return _productIngredients;
+            }
+        }
+        public static Sushi? Create(SushiBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Sushi()
+            {
+                Id = model.Id,
+                SushiName = model.SushiName,
+                Price = model.Price,
+                Ingredients = model.SushiIngredients.ToDictionary(x => x.Key, x => x.Value.Item2)
+            };
+        }
+        public static Sushi? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Sushi()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                SushiName = element.Element("SushiName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Ingredients = element.Element("SushiIngredients")!.Elements("SushiIngredient").ToDictionary(x => 
+                    Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(SushiBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            SushiName = model.SushiName;
+            Price = model.Price;
+            Ingredients = model.SushiIngredients.ToDictionary(x => x.Key, x => 
+                x.Value.Item2);
+            _productIngredients = null;
+        }
+        public SushiViewModel GetViewModel => new()
+        {
+            Id = Id,
+            SushiName = SushiName,
+            Price = Price,
+            SushiIngredients = SushiIngredients
+        };
+        public XElement GetXElement => new("Sushi",
+        new XAttribute("Id", Id),
+        new XElement("SushiName", SushiName),
+        new XElement("Price", Price.ToString()),
+        new XElement("SushiIngredients", Ingredients.Select(x => new XElement("SushiIngredient",
+            new XElement("Key", x.Key), new XElement("Value", x.Value))).ToArray()));
+    }
+}

SushiBar/SushiBarFileImplement/SushiBarFileImplement.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="..\SushiBarContracts\SushiBarContracts.csproj" />
+    <ProjectReference Include="..\SushiBarDataModels\SushiBarDataModels.csproj" />
+  </ItemGroup>
+
+</Project>