<?php

class DBConnect {
    private static $_singleton;
    private $_connection;

    const DB_USERNAME = "root";
    const DB_PASSWORD = "";
    const DB_HOST = "localhost";
    const DB_NAME = "SimpleChat";

    private function __construct() {
        $this->_connection = new PDO(
                    'mysql:host=' . self::DB_HOST . ';dbname=' . self::DB_NAME,
                    self::DB_USERNAME,
                    self::DB_PASSWORD
                );

        $this->_connection->exec("SET CHARACTER SET utf8");
    }

    public static function getInstance(): DBConnect {
        if(is_null(self::$_singleton)) {
            self::$_singleton = new DBConnect();
        }
        return self::$_singleton;
    }

    public function getHandler(): PDO {
        return $this->_connection;
    }
}