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msd2/tracking/piwik/plugins/Marketplace/LicenseKey.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\Marketplace;
+
+use Piwik\Option;
+
+class LicenseKey
+{
+    public function get()
+    {
+        return Option::get('marketplace_license_key');
+    }
+
+    public function has()
+    {
+        $key = $this->get();
+
+        return isset($key) && $key !== false && $key !== '';
+    }
+
+    /**
+     * @param string|null|false $licenseKey `null` or `false` will delete an existing a license key
+     */
+    public function set($licenseKey)
+    {
+        if (!isset($licenseKey) || $licenseKey === false) {
+            $this->delete();
+        } else {
+            Option::set('marketplace_license_key', (string) $licenseKey);
+        }
+    }
+
+    private function delete()
+    {
+        Option::delete('marketplace_license_key');
+    }
+
+}