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msd2/tracking/piwik/plugins/Referrers/Columns/Campaign.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\Referrers\Columns;
+
+use Piwik\Common;
+use Piwik\Piwik;
+use Piwik\Tracker\Action;
+use Piwik\Tracker\Request;
+use Piwik\Tracker\TrackerConfig;
+use Piwik\Tracker\Visitor;
+
+class Campaign extends Base
+{
+    /**
+     * Obtained from the `[Tracker] create_new_visit_when_campaign_changes` INI config option.
+     * If true, will create new visits when campaign name changes.
+     *
+     * @var bool
+     */
+    protected $createNewVisitWhenCampaignChanges;
+    protected $nameSingular = 'Referrers_ColumnCampaign';
+
+    public function __construct()
+    {
+        $this->createNewVisitWhenCampaignChanges = TrackerConfig::getConfigValue('create_new_visit_when_campaign_changes') == 1;
+    }
+
+    /**
+     * If we should create a new visit when the campaign changes, check if the campaign info changed and if so
+     * force the tracker to create a new visit.i
+     *
+     * @param Request $request
+     * @param Visitor $visitor
+     * @param Action|null $action
+     * @return bool
+     */
+    public function shouldForceNewVisit(Request $request, Visitor $visitor, Action $action = null)
+    {
+        if (!$this->createNewVisitWhenCampaignChanges) {
+            return false;
+        }
+
+        $information = $this->getReferrerInformationFromRequest($request, $visitor);
+
+        if ($information['referer_type'] == Common::REFERRER_TYPE_CAMPAIGN
+            && $this->isReferrerInformationNew($visitor, $information)
+        ) {
+            Common::printDebug("Existing visit detected, but creating new visit because campaign information is different than last action.");
+
+            return true;
+        }
+
+        return false;
+    }
+}