import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQL {

        private String HOST = "";
        private String DATABASE = "";
        private String USER = "";
        private String PASSWORD = "";

        private Connection con;

        public MySQL(String host, String database, String user, String password) {
                this.HOST = host;
                this.DATABASE = database;
                this.USER = user;
                this.PASSWORD = password;

                connect();
        }

		public void connect() {
                try {
                        con = DriverManager.getConnection("jdbc:mysql://" + HOST + ":3306/" + DATABASE + "?autoReconnect=true", USER, PASSWORD);
                        System.out.println("[MySQL] Die Verbindung zur MySQL wurde hergestellt!");
                } catch (SQLException e) {
                        System.out.println("[MySQL] Die Verbindung zur MySQL ist fehlgeschlagen! Fehler: " + e.getMessage());
                }
        }

        public void close() {
                try {
                        if(con != null) {
                                con.close();
                                System.out.println("[MySQL] Die Verbindung zur MySQL wurde Erfolgreich beendet!");
                        }
                } catch (SQLException e) {
                        System.out.println("[MySQL] Fehler beim beenden der Verbindung zur MySQL! Fehler: " + e.getMessage());
                }
        }

        public void update(String qry) {
                try {
                        Statement st = con.createStatement();
                        st.executeUpdate(qry);
                        st.close();
                } catch (SQLException e) {
                        connect();
                        System.err.println(e);
                }
        }

        public ResultSet query(String qry) {
                ResultSet rs = null;

                try {
                        Statement st = con.createStatement();
                        rs = st.executeQuery(qry);
                } catch (SQLException e) {
                        connect();
                        System.err.println(e);
                }
                return rs;
        }
}