67 lines
2.3 KiB
C#
67 lines
2.3 KiB
C#
using Memory.Logic;
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using System.Data.SQLite;
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namespace Memory.Data
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{
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public class ScoreHandler : IScoreHandler
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{
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public const string URI = "Data Source=Scores.db;Version=3;";
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private bool IsTop10(int points)
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{
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using SQLiteConnection connection = new(URI);
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connection.Open();
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using SQLiteCommand command = new("SELECT Points FROM Scores ORDER BY Points DESC LIMIT 1 OFFSET 9", connection);
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using SQLiteDataReader reader = command.ExecuteReader();
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if (!reader.Read())
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{
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connection.Close();
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return true;
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}
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int lowest = reader.GetInt32(0);
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connection.Close();
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return points > lowest;
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}
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public ScoreHandler()
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{
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using SQLiteConnection connection = new(URI);
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connection.Open();
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using SQLiteCommand command = new("CREATE TABLE IF NOT EXISTS Scores(ID INTEGER PRIMARY KEY, Name TEXT, Points INTEGER)", connection);
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command.ExecuteNonQuery();
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connection.Close();
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}
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public List<Score> GetTopScores()
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{
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List<Score> scores = [];
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using SQLiteConnection connection = new(URI);
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connection.Open();
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using SQLiteCommand command = new("SELECT Name, Points FROM Scores ORDER BY Points DESC LIMIT 10", connection);
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using SQLiteDataReader reader = command.ExecuteReader();
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while (reader.Read())
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{
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scores.Add(new(reader.GetString(0), reader.GetInt32(1)));
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}
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connection.Close();
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return scores;
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}
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public bool WriteScore(Score score)
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{
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if (IsTop10(score.Points))
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{
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using SQLiteConnection connection = new(URI);
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connection.Open();
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using SQLiteCommand command = new("INSERT INTO Scores(Name, Points) VALUES(@Name, @Points)", connection);
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command.Parameters.AddWithValue("@Name", score.Name);
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command.Parameters.AddWithValue("@Points", score.Points);
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command.ExecuteNonQuery();
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connection.Close();
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return true;
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}
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return false;
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}
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}
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}
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