overview: highlight missing deployment endpoint

application/controllers/IndexController.php

@@ -22,6 +22,7 @@ class IndexController extends ActionController
             return;
         }
 
+        $this->view->hasDeploymentEndpoint = $this->db()->hasDeploymentEndpoint();
         $this->view->stats = $this->db()->getObjectSummary();
         $this->view->undeployedActivities = $this->db()->countActivitiesSinceLastDeployedConfig();
         if ((int) $this->view->stats['apiuser']->cnt_total === 0) {

application/views/scripts/index/index.phtml

@@ -99,7 +99,7 @@ $all = array(
     $this->translate('Deploy configuration to your Icinga nodes') => array(
         array('wrench',   $this->translate('Deployment'), 'director/config/deployments', $this->translate('Manage deployments, access audit log and history') . pendingDeployments($this), $this->undeployedActivities ? 'warning' : 'ok'),
         array('lock-open-alt', $this->translate('Api users'), 'director/apiusers', statSummary($this, 'apiuser')),
-        array('cloud',    $this->translate('Endpoints'), 'director/endpoints', statSummary($this, 'endpoint')),
+        array('cloud',    $this->translate('Endpoints'), 'director/endpoints', statSummary($this, 'endpoint') . ( $this->hasDeploymentEndpoint ? '' : '. ' . $this->translate('None could be used for deployments right now')), $this->hasDeploymentEndpoint ? '' : 'critical'),
         array('globe',    $this->translate('Zones'), 'director/zones', statSummary($this, 'zone')),
     ),
     $this->translate('Do more with your data') => array(

library/Director/Db.php

@@ -55,6 +55,25 @@ class Db extends DbConnection
         return $this->getSetting('default_global_zone', 'director-global');
     }
 
+    public function hasDeploymentEndpoint()
+    {
+        $db = $this->db();
+        $query = $db->select()->from(
+            array('z' => 'icinga_zone'),
+            array('cnt' => 'COUNT(*)')
+        )->join(
+            array('e' => 'icinga_endpoint'),
+            'e.zone_id = z.id',
+            array()
+        )->join(
+            array('au' => 'icinga_apiuser'),
+            'e.apiuser_id = au.id',
+            array()
+        )->where('z.object_name = ?', $this->getMasterZoneName());
+
+        return $db->fetchOne($query) > 0;
+    }
+
     public function getDeploymentEndpointName()
     {
         $db = $this->db();