Additional syntax validation for areafix/filefix commands

app/Classes/FTN/Process/Netmail/Robot/Areafix/Area.php

@@ -3,6 +3,7 @@
 namespace App\Classes\FTN\Process\Netmail\Robot\Areafix;
 
 use Carbon\Carbon;
+use Illuminate\Support\Arr;
 use Illuminate\Support\Facades\DB;
 use Illuminate\Support\Facades\Log;
 
@@ -37,18 +38,21 @@ class Area extends Base
 	{
 		$command = self::command.' '.join(' ',$this->arguments);
 
-		// If command starts with '-', its to unsubscribe
-		if (str_starts_with($this->arguments[0],'-')) {
-			$sub = FALSE;
-			$area = substr($this->arguments[0],1);
+		if (! ($area=Arr::get($this->arguments,0,NULL)))
+			return sprintf('%-25s <-- INVALID, AN AREA IS REQUIRED',$command);
 
-		} elseif (str_starts_with($this->arguments[0],'+')) {
+		// If command starts with '-', its to unsubscribe
+		if (str_starts_with($area,'-')) {
+			$sub = FALSE;
+			$area = substr($area,1);
+
+		} elseif (str_starts_with($area,'+')) {
 			$sub = TRUE;
-			$area = substr($this->arguments[0],1);
+			$area = substr($area,1);
 
 		} else {
 			$sub = TRUE;
-			$area = $this->arguments[0];
+			$area = $area;
 		}
 
 		Log::debug(sprintf('%s:- Processing [%s] for [%s]',self::LOGKEY,$sub ? 'ADD' : 'REMOVE',$area));