<?php

class kProductOptionsHelper extends kHelper {

	function ExplodeOptionValues($option_row)
	{
		$values = getArrayValue($option_row, 'Values');
		if (!$values) return false;

		$values = explode(',', $values);

		$prices = preg_split('/(?<!\\\)\|/', getArrayValue($option_row, 'Prices'));
		foreach ($prices as $a_price) {
			list($id, $price) = preg_split('/(?<!\\\)=/', $a_price);
			$conv_prices[$id] = $price;
		}
		$price_types = preg_split('/(?<!\\\)\|/', getArrayValue($option_row, 'PriceTypes'));
		foreach ($price_types as $a_price_type) {
			list($id, $price_type) = preg_split('/(?<!\\\)=/', $a_price_type);
			$conv_price_types[$id] = $price_type;
		}
		$conv_prices = $this->UnEscape($conv_prices);
		$conv_price_types = $this->UnEscape($conv_price_types);

		return array('Values'=>$values, 'Prices'=>$conv_prices, 'PriceTypes'=>$conv_price_types);
	}

	function UnEscape($data)
	{
		$res = array();
		foreach ($data as $key=>$val)
		{
			$n_key = str_replace('\\|', '|', $key);
			$n_key = str_replace('\\=', '=', $n_key);
			$n_val = str_replace('\\|', '|', $val);
			$n_val = str_replace('\\=', '=', $n_val);
			$res[$n_key] = $n_val;
		}
		return $res;
	}

	function ConvertKey($key, $product_id, $use_temp=0)
	{
		static $mapping = null;
		if (is_null($mapping) || !isset($mapping[$product_id])) {
			$table = TABLE_PREFIX.'ProductOptions';
			if ($use_temp) $table = $this->Application->GetTempName($table, 'prefix:p');
			$sql = 'SELECT * FROM '.$table.' WHERE ProductId = '.$product_id;
			$conn =& $this->Application->GetADODBConnection();
			$mapping[$product_id] = $conn->Query($sql, 'ProductOptionId');
		}
		return $mapping[$product_id][$key];
	}

	function OptionsSalt($options, $comb_only=false)
	{
		if (!is_array($options)) return 0;
		if (!$comb_only) {
			ksort($options);
			return crc32(serialize($options));
		}

		$option_keys = array_keys($options);
		if (!$option_keys) return ;
		$included = $this->Conn->GetCol('SELECT ProductOptionId FROM '.TABLE_PREFIX.'ProductOptions WHERE ProductOptionId IN ('.join(',', $option_keys).') AND OptionType IN (1,3,6)');
		foreach ($option_keys as $key) {
			if (!in_array($key, $included)) {
				unset($options[$key]);
			}
		}
		return $this->OptionsSalt($options);
	}
}

?>