fix storage before

AutomobilePlant/AutomobilePlantFileImplement/DataFileSingleton.cs

@@ -14,9 +14,11 @@ namespace AutomobilePlantFileImplement
         private readonly string ComponentFileName = "Component.xml";
         private readonly string OrderFileName = "Order.xml";
         private readonly string CarFileName = "Car.xml";
+        private readonly string ShopFileName = "Shop.xml";
         public List<Component> Components { get; private set; }
         public List<Order> Orders { get; private set; }
         public List<Car> Cars { get; private set; }
+        public List<Shop> Shops { get; private set; }
         public static DataFileSingleton GetInstance()
         {
             if (instance == null)
@@ -28,11 +30,13 @@ namespace AutomobilePlantFileImplement
         public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
         public void SaveCars() => SaveData(Cars, CarFileName, "Cars", 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)!)!;
             Cars = LoadData(CarFileName, "Car", x => Car.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)
         {

AutomobilePlant/AutomobilePlantFileImplement/Implements/ShopStorage.cs

@@ -0,0 +1,147 @@
+using AutomobilePlantContracts.BindingModels;
+using AutomobilePlantContracts.SearchModels;
+using AutomobilePlantContracts.StoragesContracts;
+using AutomobilePlantContracts.ViewModels;
+using AutomobilePlantDataModels.Models;
+using AutomobilePlantFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AutomobilePlantFileImplement.Implements
+{
+    public class ShopStorage : IShopStorage
+    {
+        private readonly DataFileSingleton source;
+        public ShopStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public ShopViewModel? GetElement(ShopSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Shops.FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
+        }
+
+        public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            return source.Shops
+                .Select(x => x.GetViewModel)
+                .Where(x => x.Name.Contains(model.Name ?? string.Empty))
+                .ToList();
+        }
+
+        public List<ShopViewModel> GetFullList()
+        {
+            return source.Shops.Select(shop => shop.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 ShopViewModel? Delete(ShopBindingModel model)
+        {
+            var shop = source.Shops.FirstOrDefault(x => x.Id == model.Id);
+            if (shop == null)
+            {
+                return null;
+            }
+            source.Shops.Remove(shop);
+            source.SaveShops();
+            return shop.GetViewModel;
+        }
+
+        public bool SellCar(ICarModel model, int count)
+        {
+            var car = source.Cars.FirstOrDefault(x => x.Id == model.Id);
+
+            if (car == null)
+            {
+                return false;
+            }
+
+            var countStore = count;
+
+            var shopCars = source.Shops.SelectMany(shop => shop.ShopCars.Where(c => c.Value.Item1.Id == car.Id));
+
+            foreach (var c in shopCars)
+            {
+                count -= c.Value.Item2;
+
+                if (count <= 0)
+                {
+                    break;
+                }
+            }
+
+            if (count > 0)
+            {
+                return false;
+            }
+
+            count = countStore;
+
+            foreach (var shop in source.Shops)
+            {
+                var cars = shop.ShopCars;
+
+                foreach (var c in cars.Where(x => x.Value.Item1.Id == car.Id))
+                {
+                    var min = Math.Min(c.Value.Item2, count);
+                    cars[c.Value.Item1.Id] = (c.Value.Item1, c.Value.Item2 - min);
+                    count -= min;
+
+                    if (count <= 0)
+                    {
+                        break;
+                    }
+                }
+
+                shop.Update(new ShopBindingModel
+                {
+                    Id = shop.Id,
+                    Name = shop.Name,
+                    Address = shop.Address,
+                    OpeningDate = shop.OpeningDate,
+                    ShopCars = cars
+                });
+
+                source.SaveShops();
+
+                if (count <= 0) break;
+            }
+
+            return count <= 0;
+        }
+    }
+}

AutomobilePlant/AutomobilePlantFileImplement/Models/Shop.cs

@@ -0,0 +1,110 @@
+using AutomobilePlantContracts.BindingModels;
+using AutomobilePlantContracts.ViewModels;
+using AutomobilePlantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace AutomobilePlantFileImplement.Models
+{
+    public class Shop : IShopModel
+    {
+        public int Id { get; private set; }
+        public string Name { get; private set; } = string.Empty;
+        public string Address { get; private set; } = string.Empty;
+        public DateTime OpeningDate { get; private set; }
+        public Dictionary<int, int> Cars { get; private set; } = new();
+        private Dictionary<int, (ICarModel, int)>? _shopCars = null;
+
+        public Dictionary<int, (ICarModel, int)> ShopCars
+        {
+            get
+            {
+                if (_shopCars == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _shopCars = Cars.ToDictionary(
+                        x => x.Key,
+                        y => ((source.Cars.FirstOrDefault(z => z.Id == y.Key) as ICarModel)!, y.Value)
+                    );
+                }
+                return _shopCars;
+            }
+        }
+
+        public static Shop? Create(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Address = model.Address,
+                OpeningDate = model.OpeningDate,
+                Cars = model.ShopCars.ToDictionary(x => x.Key, x => x.Value.Item2)
+            };
+        }
+
+        public static Shop? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                Name = element.Element("Name")!.Value,
+                Address = element.Element("Address")!.Value,
+                OpeningDate = Convert.ToDateTime(element.Element("OpeningDate")!.Value),
+                Cars = element.Element("ShopCars")!.Elements("ShopCar").ToDictionary(
+                    x => Convert.ToInt32(x.Element("Key")?.Value),
+                    x => Convert.ToInt32(x.Element("Value")?.Value)
+                )
+            };
+        }
+
+
+        public void Update(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Address = model.Address;
+            OpeningDate = model.OpeningDate;
+            if (model.ShopCars.Count > 0)
+            {
+                Cars = model.ShopCars.ToDictionary(x => x.Key, x => x.Value.Item2);
+                _shopCars = null;
+            }
+        }
+        public ShopViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Address = Address,
+            OpeningDate = OpeningDate,
+            ShopCars = ShopCars,
+        };
+
+        public XElement GetXElement => new(
+            "Shop",
+             new XAttribute("Id", Id),
+             new XElement("Name", Name),
+             new XElement("Address", Address),
+             new XElement("OpeningDate", OpeningDate.ToString()),
+             new XElement("ShopCars", Cars.Select(x =>
+             new XElement("ShopCar",
+             new XElement("Key", x.Key),
+             new XElement("Value", x.Value)))
+            .ToArray()));
+    }
+}