<?php

namespace Vn\Sql;

require_once ('vn/lib/lib.php');
require_once ('vn/sql/value.php');

class Render
{
	static function toString (&$query, &$paramsMap = NULL)
	{
		if (isset ($paramsMap) && is_array ($paramsMap) && count ($paramsMap) > 0)
		{
			$i = 0;
			$params = [];
	
			foreach ($paramsMap as $key => $value)
				$params[$key] = (new Value ($value))->render ();
				
			$replaceFunc = function ($matches) use (&$params, &$i)
			{
				$key = substr ($matches[0], 1);
				
				if (strlen ($key) == 0)
					$key = $i++;	
				if (isset ($params[$key]))
					return $params[$key];
			
				return '#'. $key;
			};

			return preg_replace_callback ('/#\w*/', $replaceFunc, $query);
		}
		else
			return $query;
	}

	static function printf ($arg)
	{
		$count = count ($arg);

		if ($count > 1)
		{
			for ($n = 1; $n < $count; $n++)
			{
				$obj = new Value ($arg[$n]);
				$arg[$n] = $obj->render ();
			}

			return call_user_func_array ('sprintf', $arg);
		}
		else
			return $arg[0];
	}
}

?>