Add project files.

StockDAL/StockRepository.cs

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+using DataDomain;
+using DatamodelLibrary;
+using StockDAL.Interface;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StockDAL
+{
+    public class StockRepository : IStockRepository
+    {
+        public void SaveStockMember(StockMember stockMember)
+        {
+            using (var context = new StockContext())
+            {
+                var sm = context.Stocks.Add(stockMember);
+                context.SaveChanges();
+            }
+        }
+
+        public void UpdateActualPrice(int id, decimal price)
+        {
+            using var context = new StockContext();
+            var entity = (from stk in context.Stocks
+                          where stk.Id == id
+                          select stk).FirstOrDefault();
+
+            entity.ActValue = price;
+            entity.ActDate = DateTime.Today;
+
+            context.SaveChanges();
+        }
+
+        public void UpdateActualForSell(int id, int sellAmount, decimal sellPrice, DateTime sellDate)
+        {
+            using var context = new StockContext();
+            var entity = (from stk in context.Stocks
+                          where stk.Id == id
+                          select stk).FirstOrDefault();
+            var rest = entity.ActAmount - sellAmount;
+            entity.ActAmount = rest < 0 ? 0 : rest;
+            entity.SoldDate = DateTime.Today;
+            entity.SoldValue = sellAmount * sellPrice;
+
+            context.SaveChanges();
+        }
+
+
+        public IEnumerable<StockMember> GetAllStocks()
+        {
+            using var context = new StockContext();
+            var output = context.Stocks;
+            return output.ToList();
+        }
+
+        public IEnumerable<StockMember> GetAllRemainingStocks()
+        {
+            using var context = new StockContext();
+            var output = (from stk in context.Stocks
+                          where stk.SoldDate == null || stk.ActAmount > 0
+                          select stk).ToList();
+            return output;
+        }
+
+        public void RemoveAllStocks()
+        {
+            using var context = new StockContext();
+            context.Stocks.RemoveRange(GetAllStocks());
+            context.SaveChanges();
+        }
+
+        public void InsertMany(List<StockMember> stockMembers)
+        {
+            using var context = new StockContext();
+            context.Stocks.AddRange(stockMembers);
+            context.SaveChanges();
+        }
+
+        public void RestoreStockMembers(List<StockMember> stockMembers)
+        {
+            using var context = new StockContext();
+            using var transaction = context.Database.BeginTransaction();
+
+            try
+            {
+                var stocksToRemove = context.Stocks;
+                context.Stocks.RemoveRange(stocksToRemove);
+                var insertStocks = stockMembers.Select(o => new StockMember
+                {
+                    Id = 0,
+                    StockId = o.StockId,
+                    StockExtId = o.StockExtId,
+                    BuyDate = o.BuyDate,
+                    BuyValue = o.BuyValue,
+                    ActAmount = o.ActAmount,
+                    ActValue = o.ActValue,
+                    ActDate = o.ActDate,
+                    SoldValue = o.SoldValue,
+                    SoldDate = o.SoldDate,
+                    Comment = o.Comment,
+                    PostAmount = o.PostAmount
+                }).ToList();
+                context.Stocks.AddRange(insertStocks);
+                context.SaveChanges();
+                transaction.Commit();
+            }
+            catch (Exception ex)
+            {
+                throw new InvalidOperationException(ex.Message);
+            }
+        }
+    }
+}