добавлены нужные файлы в ...Implements, а также доделана бизнес логика. остались формы

SushiBarBusinessLogic/ShopLogic.cs

@@ -5,6 +5,7 @@ using SushiBarContracts.SearchModel;
 using SushiBarContracts.StoragesContracts;
 using SushiBarContracts.ViewModels;
 using SushiBarDataModels;
+using SushiBarDataModels.Models;
 
 namespace SushiBarBusinessLogic
 {
@@ -52,19 +53,91 @@ namespace SushiBarBusinessLogic
         public bool Create(ShopBindingModel model)
         {
             CheckModel(model);
+            if(_shopStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Вставка в хранилище прервана");
+                return false;
+            }
+            return true;
         }
 
-        private bool CheckModel(ShopBindingModel model, bool withParams = true)
+        public bool Update(ShopBindingModel model)
+        {
+            CheckModel(model);
+            if(_shopStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Обновление прервано");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ShopBindingModel model)
+        {
+            CheckModel(model);
+            if(_shopStorage?.Delete(model) == null)
+            {
+                _logger.LogWarning("Удаление прервано");
+                return false;
+            }
+            return true;
+        }
+
+        public bool AddSushiInShop(ShopSearchModel model, ISushiModel sushi, int count)
+        {
+            if (model == null) throw new ArgumentNullException(nameof(model));
+            if(count <= 0)
+                throw new ArgumentException(nameof(count));
+            _logger.LogInformation("AddSushiInShop. ShopName:{ShopName}.Id:{ Id}", model.Name, model.Id);
+
+            var element = _shopStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("Не добавлено");
+                return false;
+            }
+            if (element.ShopSushis.TryGetValue(sushi.Id, out var samesushi))
+            {
+                element.ShopSushis[sushi.Id] = (sushi, samesushi.Item2 + count);
+                _logger.LogInformation("Same sushi found by supply. Added {0} of {1} in {2} shop", count, sushi.SushiName, element.Name);
+            }
+            else
+            {
+                element.ShopSushis[sushi.Id] = (sushi, count);
+                _logger.LogInformation("New sushi added by supply. Added {0} of {1} in {2} shop", count, sushi.SushiName, element.Name);
+            }
+
+            _shopStorage.Update(new()
+            {
+                Id = element.Id,
+                Name = element.Name,
+                Address = element.Address,
+                DateOpening = element.DateOpening,
+                ShopSushis = element.ShopSushis
+            });
+
+            return true;
+        }
+
+        private void CheckModel(ShopBindingModel model, bool withParams = true)
         {
             if(model == null) 
-                throw new ArgumentNullException($"{nameof(model)} is null");
+                throw new ArgumentNullException($"{nameof(model)} является null");
-            if (!withParams) return false;
+            if (!withParams) return;
             if (string.IsNullOrEmpty(model.Name))
             {
                 throw new ArgumentNullException("Нет такого магазина", nameof(model.Name));
             }
             _logger.LogInformation("Shop. ShopName:{ShopName}.Address:{ Address}. Id:{ Id}", 
-                model.ShopName, model.Address, model.Id);
+                model.Name, model.Address, model.Id);
+            var element = _shopStorage.GetElement(new ShopSearchModel
+            {
+                Name = model.Name,
+            });
+            if(element != null && element.Id != model.Id && element.Name == model.Name)
+            {
+                throw new InvalidOperationException("Такой магазин с таким названием уже есть");
+            }
         }
     }
 }

SushiBarDataModels/ShopBindingModel.cs

@@ -1,6 +0,0 @@
-namespace SushiBarDataModels
-{
-    public class ShopBindingModel : IShopModel
-    {
-    }
-}

SushiBarListImplements/DataListSingleton.cs

@@ -8,11 +8,14 @@ namespace SushiBarListImplement
         public List<Component> Components { get; set; }
         public List<Order> Orders { get; set; }
         public List<Sushi> Sushis { get; set; }
+        public List<Shop> Shops { get; set; }
+
         private DataListSingleton()
         {
             Components = new List<Component>();
             Orders = new List<Order>();
             Sushis = new List<Sushi>();
+            Shops = new List<Shop>();
         }
         public static DataListSingleton GetInstance()
         {

SushiBarListImplements/Implements/ShopStorage.cs

@@ -0,0 +1,108 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.SearchModel;
+using SushiBarContracts.StoragesContracts;
+using SushiBarContracts.ViewModels;
+using SushiBarListImplement;
+using SushiBarListImplements.Models;
+
+namespace SushiBarListImplements.Implements
+{
+    public class ShopStorage : IShopStorage
+    {
+        private DataListSingleton _source;
+        public ShopStorage(DataListSingleton source)
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+
+        public List<ShopViewModel> GetFullList()
+        {
+            var result = new List<ShopViewModel>();
+            foreach (var shop in _source.Shops)
+            {
+                result.Add(shop.GetViewModel);
+            }
+            return result;
+        }
+
+        public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+        {
+            var result = new List<ShopViewModel>();
+            if (model == null || !model.Id.HasValue)
+            {
+                return result;
+            }
+            foreach (var shop in _source.Shops)
+            {
+                if (shop.Id == model.Id)
+                {
+                    result.Add(shop.GetViewModel);
+                }
+            }
+            return result;
+        }
+
+        public ShopViewModel? GetElement(ShopSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            foreach (var shop in _source.Shops)
+            {
+                if (shop.Id == model.Id)
+                {
+                    return shop.GetViewModel;
+                }
+            }
+            return null;
+        }
+
+        public ShopViewModel? Insert(ShopBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var shop in _source.Shops)
+            {
+                if (model.Id <= shop.Id)
+                {
+                    model.Id = shop.Id + 1;
+                }
+            }
+
+            var newShop = Shop.Create(model);
+            if (newShop == null)
+            {
+                return null;
+            }
+            _source.Shops.Add(newShop);
+            return newShop.GetViewModel;
+        }
+
+        public ShopViewModel? Update(ShopBindingModel model)
+        {
+            foreach (var shop in _source.Shops)
+            {
+                if (shop.Id == model.Id)
+                {
+                    shop.Update(model);
+                    return shop.GetViewModel;
+                }
+            }
+            return null;
+        }
+
+        public ShopViewModel? Delete(ShopBindingModel model)
+        {
+            for (int i = 0; i < _source.Shops.Count; ++i)
+            {
+                if (_source.Shops[i].Id == model.Id)
+                {
+                    var element = _source.Shops[i];
+                    _source.Shops.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+    }
+}

SushiBarListImplements/Models/Shop.cs

@@ -0,0 +1,56 @@
+using SushiBarContracts.BindingModel;
+using SushiBarContracts.ViewModels;
+using SushiBarDataModels;
+using SushiBarDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SushiBarListImplements.Models
+{
+    public class Shop : IShopModel
+    {
+        public int Id { get; private set; }
+        public string Name { get; private set; }
+        public string Address { get; private set; }
+        public DateTime DateOpening { get; private set; } = DateTime.Now;
+        public Dictionary<int, (ISushiModel, int)> ShopSushis
+        {
+            get;
+            private set;
+        } = new Dictionary<int, (ISushiModel, int)>();
+
+        public static Shop? Create(ShopBindingModel? model)
+        {
+            if(model == null) return null;
+            return new Shop()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Address = model.Address,
+                DateOpening = model.DateOpening,
+                ShopSushis = model.ShopSushis
+            };
+        }
+
+        public void Update(ShopBindingModel? model)
+        {
+            if (model == null) return;
+            Name = model.Name;
+            Address = model.Address;
+            DateOpening = model.DateOpening;
+            ShopSushis = model.ShopSushis;
+        }
+
+        public ShopViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Address = Address,
+            DateOpening = DateOpening,
+            ShopSushis = ShopSushis
+        };
+    }
+}