Add logging for closest hubs selected #800

src/Service/HubSelector.php

@@ -168,6 +168,9 @@ class HubSelector
                     'jo_count' => 0,
                     'inventory' => 0,
                 ];
+                
+                // log to file
+                $this->logClosestHubResult($jo_id, $row[0], $dist, $limit_distance);
             }
             else
             {
@@ -220,5 +223,23 @@ class HubSelector
         // filter is in place
         return false;
     }
+
+    protected function logClosestHubResult($jo_id, $hub, $distance, $limit_distance)
+    {
+        // log to file
+        $filename = '/../../var/log/closest_hubs_selected.log';
+        $date = date("Y-m-d H:i:s");
+
+        // build log entry
+        $entry = implode("", [
+            "[JO: " . $jo_id . "]",
+            "[" . $date . "]",
+            "[Distance: " . $distance . " vs " . $limit_distance . "]",
+            " " . $hub->getName() . " (ID: " . $hub->getID() . ")",
+            "\r\n",
+        ]);
+
+        @file_put_contents(__DIR__ . $filename, $entry, FILE_APPEND);
+    }
 }