First unit tests, misc fixes

src/Http/Middleware/MercureHandler.php

@@ -2,6 +2,7 @@
 
 namespace NoccyLabs\Mercureact\Http\Middleware;
 
+use LDAP\Result;
 use NoccyLabs\Mercureact\Broker\Message;
 use NoccyLabs\Mercureact\Broker\SseSubscriber;
 use NoccyLabs\Mercureact\Broker\TopicManager;
@@ -24,6 +25,10 @@ class MercureHandler
 {
     private LoopInterface $loop;
 
+    private array $seenMessageIds = [];
+
+    private int $seenIdHistorySize = 100;
+
     public function __construct(
         private Configuration $config,
         private TopicManager $topicManager,
@@ -31,6 +36,7 @@ class MercureHandler
     )
     {
         $this->loop = $loop ?? Loop::get();
+        $this->seenIdHistorySize = $this->config->getDuplicateIdHistorySize();
     }
 
     /**
@@ -166,9 +172,16 @@ class MercureHandler
             );
         }
 
+        if ($this->config->getRejectDuplicateMessages() && !empty($data['id'])) {
+            if (in_array($data['id'], $this->seenMessageIds)) {
+                return Response::plaintext("Duplicate message id")->withStatus(Response::STATUS_BAD_REQUEST);
+            }
+            array_push($this->seenMessageIds, $data['id']);
+            $this->seenMessageIds = array_slice($this->seenMessageIds, -100, 100);
+        }
+
         // Put an id in there if none already
-        // TODO add a configurable for this
-        if (!isset($data['id'])) {
+        if (empty($data['id']) || $this->config->getOverwriteMessageIds()) {
             $data['id'] = (string)Uuid::v7();
         }
 
@@ -176,7 +189,7 @@ class MercureHandler
         $message = Message::fromData($data);
 
         $this->loop->futureTick(function () use ($message) {
-            $this->publishMercureMessage($message);
+            $this->topicManager->publish($message);
         });
 
         return Response::plaintext("urn:uuid:".$message->id."\n");
@@ -201,15 +214,4 @@ class MercureHandler
         return ($matched == count($topic));
     }
 
-    /**
-     * 
-     * 
-     * @param Message $message
-     * @return void
-     */
-    private function publishMercureMessage(Message $message): void
-    {
-        $this->topicManager->publish($message);
-    }
-
 }