/**
* Choose the best matching VAT type for given product category and country.
*
* We calculate priority for each VAT type and then choose
* the VAT type having the highest priority
* (or first of those having the highest priority).
*
* VAT type priority is calculated from county match and category match as following:
*
* CountryMatch = 0
* CategoryMatch = 1
*
* if ( there is exact match on country )
* CountryMatch = 2
* elseif ( there is weak match on country )
* CountryMatch = 1
*
* if ( there is exact match on product category )
* CategoryMatch = 2
* elseif ( there is weak match on product category )
* CategoryMatch = 1
*
* if ( there is match on both country and category )
* VatTypePriority = CountryMatch * 2 + CategoryMatch - 2
* else
* VatTypePriority = 0
*
* \private
* \static
*/
function chooseVatType( $productCategory, $country )
{
$vatRules = eZVatRule::fetchList();
$catID = $productCategory->attribute( 'id' );
$vatPriorities = array();
foreach ( $vatRules as $rule )
{
$ruleCountry = $rule->attribute( 'country_code' );
$ruleCatIDs = $rule->attribute( 'product_categories_ids' );
$ruleVatID = $rule->attribute( 'vat_type' );
$categoryMatch = 0;
$countryMatch = 0;
if ( $ruleCountry == '*' )
$countryMatch = 1;
elseif ( $ruleCountry == $country )
$countryMatch = 2;
if ( !$ruleCatIDs )
$categoryMatch = 1;
elseif ( in_array( $catID, $ruleCatIDs ) )
$categoryMatch = 2;
if ( $countryMatch && $categoryMatch )
$vatPriority = $countryMatch * 2 + $categoryMatch - 2;
else
$vatPriority = 0;
if ( !isset( $vatPriorities[$vatPriority] ) )
$vatPriorities[$vatPriority] = $ruleVatID;
}
krsort( $vatPriorities, SORT_NUMERIC );
$bestPriority = 0;
if ( $vatPriorities )
{
$tmpKeys = array_keys( $vatPriorities );
$bestPriority = array_shift( $tmpKeys );
}
if ( $bestPriority == 0 )
{
eZDebug::writeError( "Cannot find a suitable VAT type " .
"for country '" . $country . "'" .
" and category '" . $productCategory->attribute( 'name' ). "'." );
return new eZVatType( array( "id" => 0,
"name" => ezpI18n::tr( 'kernel/shop', 'None' ),
"percentage" => 0.0 ) );
}
$bestVatTypeID = array_shift( $vatPriorities );
$bestVatType = eZVatType::fetch( $bestVatTypeID );
eZDebug::writeDebug(
sprintf( "Best matching VAT for '%s'/'%s' is '%s' (%d%%)",
$country,
$productCategory->attribute( 'name' ),
$bestVatType->attribute( 'name' ),
$bestVatType->attribute( 'percentage' ) ) );
return $bestVatType;
}
$db->begin();
foreach ($ruleIDList as $ruleID) {
eZVatRule::removeVatRule($ruleID);
}
$db->commit();
}
if ($http->hasPostVariable("SaveCategoriesButton")) {
$db = eZDB::instance();
$db->begin();
foreach ($productCategories as $cat) {
$id = $cat->attribute('id');
if (!$http->hasPostVariable("category_name_" . $id)) {
continue;
}
$name = $http->postVariable("category_name_" . $id);
$cat->setAttribute('name', $name);
$cat->store();
}
$db->commit();
return $module->redirectTo($module->functionURI("productcategories"));
}
$vatRules = eZVatRule::fetchList();
$errors = findErrors($vatRules);
usort($vatRules, 'compareVatRules');
$tpl->setVariable('rules', $vatRules);
$tpl->setVariable('errors', $errors);
$path = array();
$path[] = array('text' => ezpI18n::tr('kernel/shop/vatrules', 'VAT rules'), 'url' => false);
$Result = array();
$Result['path'] = $path;
$Result['content'] = $tpl->fetch("design:shop/vatrules.tpl");
/**
* Check entered data.
*
* \return list of errors found, or false if the data is ok.
*/
function checkEnteredData($country, $categories, $vatType, $productCategories, $ruleID)
{
$errors = false;
$errorHeader = '';
/*
* Check if the data was entered correctly.
*/
if (!$country || !is_numeric($vatType)) {
$errors = array();
$errorHeader = ezpI18n::tr('kernel/shop/editvatrule', 'Invalid data entered');
if (!$country) {
$errors[] = ezpI18n::tr('kernel/shop/editvatrule', 'Choose a country.');
}
if (!is_numeric($vatType)) {
$errors[] = ezpI18n::tr('kernel/shop/editvatrule', 'Choose a VAT type.');
}
return array($errorHeader, $errors);
}
/*
* Check if the rule we're about to create
* conflicts with existing ones.
*/
$errorHeader = ezpI18n::tr('kernel/shop/editvatrule', 'Conflicting rule');
$vatRules = eZVatRule::fetchList();
// If the rule is default one
if (!$categories) {
// check if default rule already exists.
foreach ($vatRules as $i) {
if ($i->attribute('id') == $ruleID || $i->attribute('country_code') != $country || $i->attribute('product_categories')) {
continue;
}
if ($country == '*') {
$errors[] = ezpI18n::tr('kernel/shop/editvatrule', 'Default rule for any country already exists.');
} else {
$errorMessage = "Default rule for country '%1' already exists.";
$errors[] = ezpI18n::tr('kernel/shop/editvatrule', $errorMessage, null, array($country));
}
break;
}
} else {
// check if there are already rules defined for the same country
// containing some of the categories.
foreach ($vatRules as $i) {
if ($i->attribute('id') == $ruleID || $i->attribute('country_code') != $country || !$i->attribute('product_categories')) {
continue;
}
$intersection = array_intersect($categories, $i->attribute('product_categories_ids'));
if (!$intersection) {
continue;
}
// Construct string containing name of all the conflicting categories.
$intersectingCategories = array();
foreach ($productCategories as $cat) {
if (array_search($cat->attribute('id'), $intersection) !== false) {
$intersectingCategories[] = $cat->attribute('name');
}
}
$intersectingCategories = join(', ', $intersectingCategories);
if ($country == '*') {
$errorMessage = "There is already a rule defined for any country containing the following categories: %2.";
} else {
$errorMessage = "There is already a rule defined for country '%1' containing the following categories: %2.";
}
$errors[] = ezpI18n::tr('kernel/shop/editvatrule', $errorMessage, null, array($country, $intersectingCategories));
}
}
return array($errorHeader, $errors);
}