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msd2/tracking/piwik/plugins/MultiSites/Columns/Metrics/EcommerceOnlyEvolutionMetric.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\MultiSites\Columns\Metrics;
+
+use Piwik\DataTable;
+use Piwik\DataTable\Row;
+use Piwik\Plugins\CoreHome\Columns\Metrics\EvolutionMetric;
+use Piwik\Site;
+
+/**
+ * Ecommerce evolution metric adapter. This is a special processed metric for MultiSites API methods. It will
+ * only be calculated for sites that have ecommerce enabled. The site is determined by the label
+ * of each row.
+ */
+class EcommerceOnlyEvolutionMetric extends EvolutionMetric
+{
+    private $isRevenueEvolution;
+
+    public function __construct($wrapped, DataTable $pastData, $evolutionMetricName = false, $quotientPrecision = 0)
+    {
+        parent::__construct($wrapped, $pastData, $evolutionMetricName, $quotientPrecision);
+
+        $this->isRevenueEvolution = $this->getName() == 'revenue_evolution';
+    }
+
+    public function compute(Row $row)
+    {
+        $columnName = $this->getWrappedName();
+        $currentValue = $this->getMetric($row, $columnName);
+
+        // if the site this is for doesn't support ecommerce & this is for the revenue_evolution column,
+        // we don't add the new column
+        if ($currentValue === false || !$this->isRevenueEvolution) {
+            $idSite = $row->getMetadata('idsite');
+            if (!$idSite || !Site::isEcommerceEnabledFor($idSite)) {
+                $row->deleteColumn($columnName);
+
+                return false;
+            }
+        }
+
+        return parent::compute($row);
+    }
+}