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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\Columns;
use Piwik\Plugin\Segment;
/**
* A factory to create segments from a dimension.
*
* @api since Matomo 4.0.0
*/
class DimensionSegmentFactory
{
/**
* @var Dimension
*/
private $dimension = null;
/**
* Generates a new dimension segment factory.
* @param Dimension $dimension A dimension instance the created segments should be based on.
*/
public function __construct(Dimension $dimension)
{
$this->dimension = $dimension;
}
/**
* Creates a segment based on the dimension properties
*
* @param Segment|null $segment optional Segment to enrich with dimension data (if properties not already set)
* @return Segment
* @throws \Exception
*/
public function createSegment(Segment $segment = null)
{
$dimension = $this->dimension;
if (!$segment instanceof Segment) {
$segment = new Segment();
}
if (!$segment->getSegment() && $dimension->getSegmentName()) {
$segment->setSegment($dimension->getSegmentName());
}
if (!$segment->getType()) {
$metricTypes = array(Dimension::TYPE_NUMBER, Dimension::TYPE_FLOAT, Dimension::TYPE_MONEY, Dimension::TYPE_DURATION_S, Dimension::TYPE_DURATION_MS);
if (in_array($dimension->getType(), $metricTypes, $strict = true)) {
$segment->setType(Segment::TYPE_METRIC);
} else {
$segment->setType(Segment::TYPE_DIMENSION);
}
}
if (!$segment->getCategoryId() && $dimension->getCategoryId()) {
$segment->setCategory($dimension->getCategoryId());
}
if (!$segment->getName() && $dimension->getName()) {
$segment->setName($dimension->getName());
}
$sqlSegment = $segment->getSqlSegment();
if (empty($sqlSegment) && !$segment->getUnionOfSegments()) {
if (!empty($dimension->getSqlSegment())) {
$segment->setSqlSegment($dimension->getSqlSegment());
} elseif ($dimension->getDbTableName() && $dimension->getColumnName()) {
$segment->setSqlSegment($dimension->getDbTableName() . '.' . $dimension->getColumnName());
} else {
throw new \Exception('Segment cannot be added because no sql segment is set');
}
}
$acceptValues = $dimension->getAcceptValues() ?: $this->guessAcceptValues();
if ($acceptValues && !$segment->getAcceptValues()) {
$segment->setAcceptedValues($acceptValues);
}
$suggestedValuesCallback = $dimension->getSuggestedValuesCallback() ?: $this->guessSuggestedValuesCallback();
if ($suggestedValuesCallback && !$segment->getSuggestedValuesCallback()) {
$segment->setSuggestedValuesCallback($suggestedValuesCallback);
}
if ($dimension->getSuggestedValuesApi()) {
$segment->setSuggestedValuesApi($dimension->getSuggestedValuesApi());
}
$sqlFilter = $dimension->getSqlFilter();
if (!$sqlFilter && !$dimension->getSqlFilterValue() && !$segment->getSqlFilter() && !$segment->getSqlFilterValue()) {
$sqlFilter = $this->guessSqlFilter();
}
if ($dimension->getSqlFilterValue() && !$segment->getSqlFilterValue()) {
$segment->setSqlFilterValue($dimension->getSqlFilterValue());
}
if ($sqlFilter && !$segment->getSqlFilter()) {
$segment->setSqlFilter($sqlFilter);
}
if (!$dimension->isAnonymousAllowed()) {
$segment->setRequiresRegisteredUser(true);
}
return $segment;
}
protected function guessSqlFilter()
{
$sqlFilterValue = null;
$enum = $this->dimension->getEnumColumnValues();
if (!empty($enum)) {
$sqlFilterValue = function ($value, $sqlSegmentName) use ($enum) {
if (isset($enum[$value])) {
return $value;
}
$id = array_search($value, $enum);
if ($id === false) {
$id = array_search(strtolower(trim(urldecode($value))), $enum);
if ($id === false) {
throw new \Exception("Invalid '$sqlSegmentName' segment value $value");
}
}
return $id;
};
}
return $sqlFilterValue;
}
protected function guessAcceptValues()
{
$acceptValues = null;
// we can generate accept values for enums automatically
$enum = $this->dimension->getEnumColumnValues();
if (!empty($enum)) {
$enumValues = array_values($enum);
$enumValues = array_slice($enumValues, 0, 20);
$acceptValues = 'Eg. ' . implode(', ', $enumValues);
}
return $acceptValues;
}
protected function guessSuggestedValuesCallback()
{
$suggestedValuesCallback = null;
// we can generate efficient value callback for enums automatically
$enum = $this->dimension->getEnumColumnValues();
if (!empty($enum)) {
$suggestedValuesCallback = function ($idSite, $maxValuesToReturn) use ($enum) {
$values = array_values($enum);
return array_slice($values, 0, $maxValuesToReturn);
};
}
return $suggestedValuesCallback;
}
}
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