From efbae34f4b427a0e88917c5ca7c0db9adcf663b2 Mon Sep 17 00:00:00 2001
From: Adrian Perez <adrian.perez@ffhs.ch>
Date: Thu, 16 Sep 2021 12:19:51 +0200
Subject: [PATCH] Remove stale site from statistics

---
 classes/task/crawl.php      | 15 +++++++++++++++
 lang/en/local_sitestats.php |  1 +
 2 files changed, 16 insertions(+)

diff --git a/classes/task/crawl.php b/classes/task/crawl.php
index 3ec343c..77d23d9 100644
--- a/classes/task/crawl.php
+++ b/classes/task/crawl.php
@@ -106,6 +106,21 @@ public function execute()
                         return false;
                     }
                     unset ($ret);
+
+                    continue;
+                }
+
+                // Remove the site if it is not found any more but was installed before.
+                $records = $DB->get_records('local_sitestats_sites');
+                foreach ($records as $record) {
+                    $record_result = $DB->get_record('local_sitestats_sites', ['id' => $record->id]);
+                    if ($record_result->url !== $site_url) {
+                        $DB->delete_records('local_sitestats_sites', ['id' => $record->id]);
+                        $DB->delete_records('local_sitestats_core', ['site' => $record->id]);
+                        $DB->delete_records('local_sitestats_plugins_site', ['site' => $record->id]);
+
+                        echo get_string('crawl_sitedeleted', 'local_sitestats', ['site' => $record->title]) . PHP_EOL;
+                    }
                 }
             }
         }
diff --git a/lang/en/local_sitestats.php b/lang/en/local_sitestats.php
index a16d448..6bdd6c0 100644
--- a/lang/en/local_sitestats.php
+++ b/lang/en/local_sitestats.php
@@ -60,6 +60,7 @@
 $string['crawl_sitelistremembersiteerror'] = 'Database problem when remembering site {$a->site} for crawling';
 $string['crawl_siteliststartup'] = 'STARTUP: Getting site list for later use';
 $string['crawl_sitefinish'] = 'SITE FINISH: Site "{$a->site}" has been crawled completely';
+$string['crawl_sitedeleted'] = 'SITE DELETED: Site "{$a->site}", core and plugin entries has being deleted';
 $string['crawl_siteremembercorecrawlederror'] = 'Database problem when storing core information crawl timestamp of site {$a->site} to database';
 $string['crawl_siterememberpluginscrawlederror'] = 'Database problem when storing plugins crawl timestamp of site {$a->site} to database';
 $string['crawl_siteremembersitecrawlederror'] = 'Database problem when storing site crawl timestamp of site {$a->site} to database';