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msd2/tracking/piwik/plugins/Ecommerce/Ecommerce.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\Ecommerce;
+use Piwik\Columns\ComputedMetricFactory;
+use Piwik\Columns\MetricsList;
+use Piwik\Piwik;
+use Piwik\Plugin\ArchivedMetric;
+use Piwik\Plugin\ComputedMetric;
+
+/**
+ *
+ */
+class Ecommerce extends \Piwik\Plugin
+{
+
+    /**
+     * @see \Piwik\Plugin::registerEvents
+     */
+    public function registerEvents()
+    {
+        $hooks = array(
+            'Metric.addComputedMetrics' => 'addComputedMetrics'
+        );
+        return $hooks;
+    }
+
+    public function addComputedMetrics(MetricsList $list, ComputedMetricFactory $computedMetricFactory)
+    {
+        $category = 'Goals_Ecommerce';
+
+        $metrics = $list->getMetrics();
+        foreach ($metrics as $metric) {
+            if ($metric instanceof ArchivedMetric && $metric->getDimension()) {
+                $metricName = $metric->getName();
+                if ($metric->getDbTableName() === 'log_conversion'
+                    && $metricName !== 'nb_uniq_orders'
+                    && strpos($metricName, ArchivedMetric::AGGREGATION_SUM_PREFIX) === 0
+                    && $metric->getCategoryId() === $category) {
+                    $metric = $computedMetricFactory->createComputedMetric($metric->getName(), 'nb_uniq_orders', ComputedMetric::AGGREGATION_AVG);
+                    $list->addMetric($metric);
+                }
+            }
+        }
+    }
+
+}