From f3fa1724826a3eff6ab3ae3957ffd7f799a6c1b8 Mon Sep 17 00:00:00 2001
From: Jake Barnby <jakeb994@gmail.com>
Date: Wed, 28 Feb 2024 01:01:39 +1300
Subject: [PATCH] Use a set to avoid message duplication

---
 src/Appwrite/Platform/Workers/Messaging.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/Appwrite/Platform/Workers/Messaging.php b/src/Appwrite/Platform/Workers/Messaging.php
index 58d7d31b15..ab3a9a41b1 100644
--- a/src/Appwrite/Platform/Workers/Messaging.php
+++ b/src/Appwrite/Platform/Workers/Messaging.php
@@ -189,7 +189,7 @@ class Messaging extends Action
         }
 
         /**
-         * @var array<string, array<string>> $identifiers
+         * @var array<string, array<string, null>> $identifiers
          */
         $identifiers = [];
 
@@ -211,7 +211,8 @@ class Messaging extends Action
                 if (!\array_key_exists($providerId, $identifiers)) {
                     $identifiers[$providerId] = [];
                 }
-                $identifiers[$providerId][] = $recipient->getAttribute('identifier');
+                // Use null as value to avoid duplicate keys
+                $identifiers[$providerId][$target->getAttribute('identifier')] = null;
             }
         }