update Piwik to version 2.16 (fixes #91)

www/analytics/core/Archive/ArchiveInvalidator/InvalidationResult.php

@@ -0,0 +1,56 @@
+<?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\Archive\ArchiveInvalidator;
+
+use Piwik\Date;
+
+/**
+ * Information about the result of an archive invalidation operation.
+ */
+class InvalidationResult
+{
+    /**
+     * Dates that couldn't be invalidated because they are earlier than the configured log
+     * deletion limit.
+     *
+     * @var array
+     */
+    public $warningDates = array();
+
+    /**
+     * Dates that were successfully invalidated.
+     *
+     * @var array
+     */
+    public $processedDates = array();
+
+    /**
+     * The day of the oldest log entry.
+     *
+     * @var Date|bool
+     */
+    public $minimumDateWithLogs = false;
+
+    /**
+     * @return string[]
+     */
+    public function makeOutputLogs()
+    {
+        $output = array();
+        if ($this->warningDates) {
+            $output[] = 'Warning: the following Dates have not been invalidated, because they are earlier than your Log Deletion limit: ' .
+                implode(", ", $this->warningDates) .
+                "\n The last day with logs is " . $this->minimumDateWithLogs . ". " .
+                "\n Please disable 'Delete old Logs' or set it to a higher deletion threshold (eg. 180 days or 365 years).'.";
+        }
+
+        $output[] = "Success. The following dates were invalidated successfully: " . implode(", ", $this->processedDates);
+        return $output;
+    }
+}