commit new library

LuminousSales/Business/Business.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

LuminousSales/Business/Business/DealsBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+   public class DealsBusiness
+    {
+        private DealContext dealContext;
+
+    }
+}

LuminousSales/Business/Business/PermissionsBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+    public class PermissionsBusiness
+    {
+        private PermissionContext permissionContext;
+    }
+}

LuminousSales/Business/Business/ProductBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using LuminousSales.Data;
+using LuminousSales.Data.Model;
+
+namespace LuminousSales.Business
+{
+    public class ProductBusiness
+    {
+        private ProductContext productContext;
+
+        public List<Product> GetAll()
+        {
+            using (productContext = new ProductContext())
+            {
+                return productContext.Products.ToList();
+            }
+        }
+
+        public Product Get(int id)
+        {
+            using (productContext = new ProductContext())
+            {
+                return productContext.Products.Find(id);
+            }
+        }
+
+        public void Buy(Product product)
+        {
+            using (productContext = new ProductContext())
+            {
+                productContext.Products.Add(product);
+                productContext.SaveChanges();
+            }
+        }
+
+        public void Update(Product product)
+        {
+            using (productContext = new ProductContext())
+            {
+                var item = productContext.Products.Find(product.Id);
+                if (item != null)
+                {
+                    productContext.Entry(item).CurrentValues.SetValues(product);
+                    productContext.SaveChanges();
+                }
+            }
+        }
+
+        public void Sell(int id)
+        {
+            using (productContext = new ProductContext())
+            {
+                var product = productContext.Products.Find(id);
+                if (product != null)
+                {
+                    productContext.Products.Remove(product);
+                    productContext.SaveChanges();
+                }
+            }
+        }
+
+    }
+}

LuminousSales/Business/Business/RolesBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+   public class RolesBusiness
+    {
+        private RoleContext roleContext;
+    }
+}

LuminousSales/Business/Business/RolesToPermissionBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+    public class RolesToPermissionBusiness
+    {
+        private RolesToPermissionContext rolesToPermissionContext;
+
+    }
+}

LuminousSales/Business/Business/StocksBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+   public class StocksBusiness
+    {
+        private StockContext stockContext;
+    }
+}

LuminousSales/Business/Business/UsersBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+    public class UsersBusiness
+    {
+        private UserContext userContext;
+    }
+}

LuminousSales/Business/Business/UsersToRolesBusiness.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using LuminousSales.Data;
+
+namespace LuminousSales.Business
+{
+   public class UsersToRolesBusiness
+    {
+        private UsersToRolesContext usersToRolesContext;
+    }
+}