<?php
namespace ProVM\Common\Service\Database;

class DSN {
  public $engine;
  public function __construct(string $engine) {
    $this->engine = $engine;
  }
  public $pairs;
  public function addPair($name, $value) {
    if ($this->pairs === null) {
      $this->pairs = [];
    }
    $this->pairs []= [$name, $value];
    return $this;
  }
  public function __toString() {
    return implode(':', [
      $this->engine,
      implode(';', array_map(function($item) {
        return implode('=', $item);
      }, $this->pairs))
    ]);
  }
}