public class MySQL {

    private Connection conn;

    public void connect(String host, String database, int port, String user, String password){
        if(!isConnected()){
            try {
                conn = DriverManager.getConnection("jdbc:mysql://" + host + ":" + port + "/" + database, user, password);
                System.out.println("Connexion etablie avec la base de donnees");
            } catch (SQLException e) {
                e.printStackTrace();
                System.out.println("Connexion refuse avec la base de donnees");
            }
        }
    }

    public void disconnect(){
        if(isConnected()){
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

    public boolean isConnected(){
        try {
            if((conn == null) || (conn.isClosed()) || (conn.isValid(5))){
                return false;
            }
            return true;
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return false;
    }

    public Connection getConnection(){
        return conn;
    }

    public void update(Player p){
        try {
        	PreparedStatement ps = Main.getInstance().mysql.getConnection().prepareStatement("SELECT * FROM `serveur` WHERE `player_uuid`='"+ p.getUniqueId().toString() +"'");
            ResultSet rs = ps.executeQuery();
            if(rs.next()){
                PreparedStatement update = Main.getInstance().mysql.getConnection().prepareStatement("UPDATE `serveur` SET `pseudo`='"+ p.getName() +"', `ip`='"+ p.getAddress().getHostString() +":"+ p.getAddress().getPort() +"' WHERE `player_uuid`='"+ p.getUniqueId().toString() +"'");
                update.executeUpdate();
                update.close();
            }else{
                PreparedStatement insert = Main.getInstance().mysql.getConnection().prepareStatement("INSERT INTO `serveur` (player_uuid, pseudo, ip, grade, argent) VALUES ('"+ p.getUniqueId().toString() +"', '"+ p.getName() +"', '"+ p.getAddress().getHostString() +":"+ p.getAddress().getPort() +"', '"+ RankUnit.JOUEUR.getPower() +"', '0')");
                insert.executeUpdate();
                insert.close();
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public boolean exist(String playerName){
    	try {
            PreparedStatement ps = Main.getInstance().mysql.getConnection().prepareStatement("SELECT * FROM `serveur` WHERE `pseudo`='"+ playerName +"'");
            ResultSet rs = ps.executeQuery();
            return rs.next();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return false;
    }

    public String getName(UUID uuid){
        try {
            PreparedStatement ps = Main.getInstance().mysql.getConnection().prepareStatement("SELECT `pseudo` FROM `serveur` WHERE `player_uuid`='"+ uuid +"'");
            ResultSet rs = ps.executeQuery();
            if(rs.next()){
                return rs.getString("pseudo");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
		return null;
    }

    public UUID getUUID(String playerName){
        try {
            PreparedStatement ps = Main.getInstance().mysql.getConnection().prepareStatement("SELECT `player_uuid` FROM `serveur` WHERE `pseudo`='"+ playerName +"'");
            ResultSet rs = ps.executeQuery();
            if(rs.next()){
                return UUID.fromString(rs.getString("player_uuid"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
		return null;
    }