Finished scoring system and started tests

Memory.Data/Memory.Data.csproj

@@ -6,6 +6,10 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="System.Data.SQLite" Version="1.0.119" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Memory.Logic\Memory.Logic.csproj" />
   </ItemGroup>

Memory.Data/ScoreHandler.cs

@@ -1,9 +1,47 @@
 using Memory.Logic;
+using System.Data.SQLite;
 
 namespace Memory.Data
 {
     public class ScoreHandler : IScoreHandler
     {
+        public const string URI = "Data Source=Scores.db;Version=3;";
 
+        public ScoreHandler()
+        {
+            using SQLiteConnection connection = new(URI);
+            connection.Open();
+            using SQLiteCommand command = new("CREATE TABLE IF NOT EXISTS Scores(ID INTEGER PRIMARY KEY, Name TEXT, Points INTEGER)", connection);
+            command.ExecuteNonQuery();
+            connection.Close();
+        }
+
+        public List<Score> GetTopScores()
+        {
+            List<Score> scores = [];
+            using SQLiteConnection connection = new(URI);
+            connection.Open();
+            using SQLiteCommand command = new("SELECT Name, Points FROM Scores ORDER BY Points DESC LIMIT 10", connection);
+            using (SQLiteDataReader reader = command.ExecuteReader())
+            {
+                while (reader.Read())
+                {
+                    scores.Add(new(reader.GetString(0), reader.GetInt32(1)));
+                }
+            }
+            connection.Close();
+            return scores;
+        }
+
+        public void WriteScore(Score score)
+        {
+            using SQLiteConnection connection = new(URI);
+            connection.Open();
+            using SQLiteCommand command = new("INSERT INTO Scores(Name, Points) VALUES(@Name, @Points)", connection);
+            command.Parameters.AddWithValue("@Name", score.Name);
+            command.Parameters.AddWithValue("@Points", score.Points);
+            command.ExecuteNonQuery();
+            connection.Close();
+        }
     }
 }