public static function getMaxCustomVariables()
{
$cache = Cache::getCacheGeneral();
$cacheKey = 'CustomVariables.MaxNumCustomVariables';
if (!array_key_exists($cacheKey, $cache)) {
$maxCustomVar = 0;
foreach (Model::getScopes() as $scope) {
$model = new Model($scope);
$highestIndex = $model->getHighestCustomVarIndex();
if ($highestIndex > $maxCustomVar) {
$maxCustomVar = $highestIndex;
}
}
$cache[$cacheKey] = $maxCustomVar;
Cache::setCacheGeneral($cache);
}
return $cache[$cacheKey];
}
/**
* Returns the number of available custom variables that can be used.
*
* "Can be used" is identifed by the minimum number of available custom variables across all relevant tables. Eg
* if there are 6 custom variables installed in log_visit but only 5 in log_conversion, we consider only 5 custom
* variables as usable.
* @return int
*/
public static function getNumUsableCustomVariables()
{
$cache = Cache::getCacheGeneral();
$cacheKey = 'CustomVariables.NumUsableCustomVariables';
if (!array_key_exists($cacheKey, $cache)) {
$minCustomVar = null;
foreach (Model::getScopes() as $scope) {
$model = new Model($scope);
$highestIndex = $model->getHighestCustomVarIndex();
if (!isset($minCustomVar)) {
$minCustomVar = $highestIndex;
}
if ($highestIndex < $minCustomVar) {
$minCustomVar = $highestIndex;
}
}
if (!isset($minCustomVar)) {
$minCustomVar = 0;
}
$cache[$cacheKey] = $minCustomVar;
Cache::setCacheGeneral($cache);
}
return $cache[$cacheKey];
}
public static function uninstall()
{
foreach (self::getScopes() as $scope) {
$model = new Model($scope);
while ($model->getHighestCustomVarIndex()) {
$model->removeCustomVariable();
}
}
}
private function printChanges($scope, $numVarsToSet, OutputInterface $output)
{
$model = new Model($scope);
$scopeName = $model->getScopeName();
$highestIndex = $model->getHighestCustomVarIndex();
$numCurrentCustomVars = $model->getCurrentNumCustomVars();
$numVarsDifference = $this->getAbsoluteDifference($numCurrentCustomVars, $numVarsToSet);
$output->writeln('');
$output->writeln(sprintf('Scope "%s"', $scopeName));
if ($numVarsToSet > $numCurrentCustomVars) {
$indexes = $highestIndex + 1;
if (1 !== $numVarsDifference) {
$indexes .= ' - ' . ($highestIndex + $numVarsDifference);
}
$output->writeln(sprintf('%s new custom variables having the index(es) %s will be ADDED', $numVarsDifference, $indexes));
} elseif ($numVarsToSet < $numCurrentCustomVars) {
$indexes = $highestIndex - $numVarsDifference + 1;
if (1 !== $numVarsDifference) {
$indexes .= ' - ' . $highestIndex;
}
$output->writeln(sprintf("%s existing custom variables having the index(es) %s will be REMOVED.", $numVarsDifference, $indexes));
$output->writeln('<comment>This is an irreversible change</comment>');
}
}
