/**
* Returns tax rates for request - either pereforms SELECT from DB, or returns already cached result
* Notice that productClassId due to optimization can be array of ids
*
* @param \Magento\Framework\DataObject $request
* @return array
* @SuppressWarnings(PHPMD.CyclomaticComplexity)
* @SuppressWarnings(PHPMD.NPathComplexity)
* @SuppressWarnings(PHPMD.ExcessiveMethodLength)
*/
protected function _getRates($request)
{
// Extract params that influence our SELECT statement and use them to create cache key
$storeId = $this->_storeManager->getStore($request->getStore())->getId();
$customerClassId = $request->getCustomerClassId();
$countryId = $request->getCountryId();
$regionId = $request->getRegionId();
$postcode = $request->getPostcode();
// Process productClassId as it can be array or usual value. Form best key for cache.
$productClassId = $request->getProductClassId();
$ids = is_array($productClassId) ? $productClassId : [$productClassId];
foreach ($ids as $key => $val) {
$ids[$key] = (int) $val;
// Make it integer for equal cache keys even in case of null/false/0 values
}
$ids = array_unique($ids);
sort($ids);
$productClassKey = implode(',', $ids);
// Form cache key and either get data from cache or from DB
$cacheKey = implode('|', [$storeId, $customerClassId, $productClassKey, $countryId, $regionId, $postcode]);
if (!isset($this->_ratesCache[$cacheKey])) {
// Make SELECT and get data
$select = $this->getConnection()->select();
$select->from(['main_table' => $this->getMainTable()], ['tax_calculation_rate_id', 'tax_calculation_rule_id', 'customer_tax_class_id', 'product_tax_class_id'])->where('customer_tax_class_id = ?', (int) $customerClassId);
if ($productClassId) {
$select->where('product_tax_class_id IN (?)', $productClassId);
}
$ifnullTitleValue = $this->getConnection()->getCheckSql('title_table.value IS NULL', 'rate.code', 'title_table.value');
$ruleTableAliasName = $this->getConnection()->quoteIdentifier('rule.tax_calculation_rule_id');
$select->join(['rule' => $this->getTable('tax_calculation_rule')], $ruleTableAliasName . ' = main_table.tax_calculation_rule_id', ['rule.priority', 'rule.position', 'rule.calculate_subtotal'])->join(['rate' => $this->getTable('tax_calculation_rate')], 'rate.tax_calculation_rate_id = main_table.tax_calculation_rate_id', ['value' => 'rate.rate', 'rate.tax_country_id', 'rate.tax_region_id', 'rate.tax_postcode', 'rate.tax_calculation_rate_id', 'rate.code'])->joinLeft(['title_table' => $this->getTable('tax_calculation_rate_title')], "rate.tax_calculation_rate_id = title_table.tax_calculation_rate_id " . "AND title_table.store_id = '{$storeId}'", ['title' => $ifnullTitleValue])->where('rate.tax_country_id = ?', $countryId)->where("rate.tax_region_id IN(?)", [0, (int) $regionId]);
$postcodeIsNumeric = is_numeric($postcode);
$postcodeIsRange = false;
$originalPostcode = null;
if (is_string($postcode) && preg_match('/^(.+)-(.+)$/', $postcode, $matches)) {
if ($countryId == self::USA_COUNTRY_CODE && is_numeric($matches[2]) && strlen($matches[2]) == 4) {
$postcodeIsNumeric = true;
$originalPostcode = $postcode;
$postcode = $matches[1];
} else {
$postcodeIsRange = true;
$zipFrom = $matches[1];
$zipTo = $matches[2];
}
}
if ($postcodeIsNumeric || $postcodeIsRange) {
$selectClone = clone $select;
$selectClone->where('rate.zip_is_range IS NOT NULL');
}
$select->where('rate.zip_is_range IS NULL');
if ($postcode != '*' || $postcodeIsRange) {
$select->where("rate.tax_postcode IS NULL OR rate.tax_postcode IN('*', '', ?)", $postcodeIsRange ? $postcode : $this->_createSearchPostCodeTemplates($postcode, $originalPostcode));
if ($postcodeIsNumeric) {
$selectClone->where('? BETWEEN rate.zip_from AND rate.zip_to', $postcode);
} elseif ($postcodeIsRange) {
$selectClone->where('rate.zip_from >= ?', $zipFrom)->where('rate.zip_to <= ?', $zipTo);
}
}
/**
* @see ZF-7592 issue http://framework.zend.com/issues/browse/ZF-7592
*/
if ($postcodeIsNumeric || $postcodeIsRange) {
$select = $this->getConnection()->select()->union(['(' . $select . ')', '(' . $selectClone . ')']);
}
$select->order('priority ' . \Magento\Framework\DB\Select::SQL_ASC)->order('tax_calculation_rule_id ' . \Magento\Framework\DB\Select::SQL_ASC)->order('tax_country_id ' . \Magento\Framework\DB\Select::SQL_DESC)->order('tax_region_id ' . \Magento\Framework\DB\Select::SQL_DESC)->order('tax_postcode ' . \Magento\Framework\DB\Select::SQL_DESC)->order('value ' . \Magento\Framework\DB\Select::SQL_DESC);
$fetchResult = $this->getConnection()->fetchAll($select);
$filteredRates = [];
if ($fetchResult) {
foreach ($fetchResult as $rate) {
if (!isset($filteredRates[$rate['tax_calculation_rate_id']])) {
$filteredRates[$rate['tax_calculation_rate_id']] = $rate;
}
}
}
$this->_ratesCache[$cacheKey] = array_values($filteredRates);
}
return $this->_ratesCache[$cacheKey];
}
/**
* Get information about tax rates applied to request
*
* @param \Magento\Framework\DataObject $request
* @return array
*/
public function getAppliedRates($request)
{
if (!$request->getCountryId() || !$request->getCustomerClassId() || !$request->getProductClassId()) {
return [];
}
$cacheKey = $this->_getRequestCacheKey($request);
if (!isset($this->_rateCalculationProcess[$cacheKey])) {
$this->_rateCalculationProcess[$cacheKey] = $this->_getResource()->getCalculationProcess($request);
}
return $this->_rateCalculationProcess[$cacheKey];
}
