ref #5269 - check if wiki is configured and extend error message (#5278)

* ref #5269 - check if wiki is configured and extend error message

* better wheck of kb wiki url

* Fix kb synhcronization error display

cron/centKnowledgeSynchronizer.php

@@ -35,5 +35,9 @@
 
 require_once realpath(dirname(__FILE__) . "/../www/class/centreon-knowledge/wikiApi.class.php");
 
+try {
     $wikiApi = new WikiApi();
     $wikiApi->synchronize();
+} catch (Exception $e) {
+    echo $e->getMessage() . "\n";
+}

www/class/centreon-knowledge/wiki.class.php

@@ -64,8 +64,10 @@ class Wiki
         }
         $res->free();
 
-        if (!count($options)) {
-            throw new \Exception('Wiki is not configured.');
+        if (!isset($options['kb_wiki_url']) || $options['kb_wiki_url'] == '') {
+            throw new \Exception(
+                'Wiki is not configured. ' .
+                'You can disable cron in /etc/crond.d/centreon for wiki synchronization.');
         }
 
         if (!preg_match('#^http://|https://#',  $options['kb_wiki_url'])) {