Initial commit

CardMarketServer/UsedRepository.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace CardMarketServer
+{
+    internal class UsedRepository : IUsedRepository
+    {
+        const string FILENAME = "usedList.csv";
+        public List<string> Query => File
+            .ReadLines(FILENAME)
+            .Select(l => l.Split(','))
+            .Select(p => new string(p[0]))
+            .ToList();
+
+        void insert(string key)
+        {
+            key += Environment.NewLine;
+            File.AppendAllText(FILENAME,key);
+        }
+
+        public void Insert(string bestellungid)
+        {
+            insert(bestellungid);
+        }
+    }
+}