Cron to delete hidden mission db events after x days

dist/config.template.php

@@ -56,6 +56,13 @@
  */
 define('HOURS_EXPIRE_EVENT_CACHE_FILE', 5);
 
+/*
+    To reduce the growing size of your event database, you can setup a cron job to run
+    /crons/delete-hidden-events.php. The value below controls how many days old a hidden replay
+    must be before deleting it's events
+ */
+define('MIN_DAYS_DELETE_HIDDEN_MISSION_EVENTS', 60);
+
 // Set this to FALSE if you are deploying
 // to production server
 define('DEBUG', TRUE);

dist/crons/delete-hidden-events.php

@@ -0,0 +1,30 @@
+<?php
+ini_set('max_execution_time', 900);
+
+// Delete events from missions that have been "hidden". Missions are hidden because
+// not enough players are present or they finish too soon (usually applies to mission testing)
+if (!isset($_SERVER['cron']))
+   die('No browser access.');
+
+require_once('../inc/bootstrap.php');
+$replays = Replays::Instance();
+$db = Database::Instance()->conn;
+
+// Sometimes missions can be incorrectly hidden. Let's not delete anything too recent.
+$daysOlderThan = MIN_DAYS_DELETE_HIDDEN_MISSION_EVENTS;
+$deletedReplays = [];
+
+$hiddenMissionIds = $replays->fetchHidden($daysOlderThan);
+
+foreach ($hiddenMissionIds as $mission) {
+    if ($mission->id) {
+        $query = $db->prepare("DELETE FROM events WHERE replayId = :id");
+
+        $query->execute(array('id' => $mission->id));
+
+        $deletedReplays[] = $mission->id;
+    }
+}
+
+echo '<pre>';
+print_r($deletedReplays);

dist/inc/classes/Replays.php

@@ -63,6 +63,20 @@ public function fetchOne($replayId, $forceHidden = FALSE) {
         return $query->fetch();
     }
 
+    public function fetchHidden($daysOlderThan = 60) {
+
+        $query = $this->_db->prepare("
+            SELECT id FROM replays
+            WHERE
+                hidden = 1 AND
+                dateStarted < DATE_SUB(NOW(), INTERVAL 60 DAY)
+        ");
+
+        $query->execute();
+
+        return $query->fetch();
+    }
+
     public function updateMeta() {
 
         $util = Util::Instance();