// *****************************************************************************
// Purpose    
// Inputs   
// Remarks        
// Returns    
function ShowPriceInTheUnit( $price, $currencyID )
{
    $q_currency = db_query( "select currency_value, where2show, code from ".
        CURRENCY_TYPES_TABLE." where CID=$currencyID" );
    $currency = db_fetch_row( $q_currency );
    $price = round( 100*$price*$currency["currency_value"] )/100;
    if (round($price*10) == $price*10 && round($price)!=$price) 
        $price = "$price"."0"; //to avoid prices like 17.5 - write 17.50 instead
    return $currency["where2show"] ?  $price.$currency["code"] : $currency["code"].$price;
}

/**
 * round float value to 0.01 precision
 * 
 * @param float $float_value
 * @return float
 */
function RoundFloatValue( $float_value ){
    return round (100*$float_value)/100;
}

// Purpose    round float value to 0.01 precision
// Inputs   $float_value - value to float
// Remarks    this function returns string value. 
//                Two digits locate after decimal point always.
// Returns    rounded value
function RoundFloatValueStr( $float_value )
{
    $str = RoundFloatValue( $float_value );
    $index = strpos($str,".");
    if ( $index === false )
        return $str.".00";
    else
    {
        if ( strlen($str)-1-$index == 1 )
            return $str."0";
        else
            return $str;
    }
}

// Purpose    gets all files in specified directory
// Inputs   $dir - full path directory
function GetFilesInDirectory( $dir, $extension = '',$name_template = null)
{
    if(!file_exists($dir))return array();

    $dh  = opendir($dir);
    $files = array();
    $pattern = '|'.($name_template?$name_template:'').'\.'.$extension.'$|msi';
    while (false !== ($filename = readdir($dh))) 
    {
        if ( !is_dir($dir.'/'.$filename) && $filename != '.' && $filename != '..' ){
            
            if(preg_match($pattern,$filename)){
                $files[] = $dir.'/'.$filename;
            }
        }
    }
    return $files;
}

/**
 * Show a number and selected currency sign
 *
 * @param float $price - is in universal currency
 * @param mixed $custom_currency - if $custom_currency != 0 show price this currency with ID = $custom_currency
 * @param boolean $priceInUC - notify about price is in UC format
 * @return string
 */
function show_price($price, $custom_currency = 0, $priceInUC = true){
    
    if($custom_currency){
        $currencyEntry = new Currency();
        $currencyEntry->loadByCID($custom_currency);
    }else{
        $Register = &Register::getInstance();
        /*@var $Register Register*/
        $currencyEntry = $Register->get('admin_mode')?Currency::getDefaultCurrencyInstance():Currency::getSelectedCurrencyInstance();
        /*@var $currencyEntry Currency*/
    }
    
    $price = $priceInUC?$currencyEntry->convertUnits($price):$price;

    return $currencyEntry->getView($price);
}

function ConvertPriceToUniversalUnit($priceWithOutUnit){
    
    $currencyEntry = Currency::getSelectedCurrencyInstance();
    return $currencyEntry->convertToUnits($priceWithOutUnit, true);
}

function show_priceWithOutUnit($price){
    
    $currencyEntry = Currency::getSelectedCurrencyInstance();
    
    return $currencyEntry->convertUnits($price, true);
}