From ca450671584d96f14595d9909187eb4b0bc2a7f2 Mon Sep 17 00:00:00 2001
From: Andrew Ferrazzutti <andrewf@element.io>
Date: Fri, 5 Jul 2024 04:59:48 +0900
Subject: [PATCH] Let Element Call widget set session memberships (#2459)

Make Element Call widgets request permission to set device-specific
session membership state events.
---
 src/widget.ts | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/widget.ts b/src/widget.ts
index 3635b6d9..57e4d83b 100644
--- a/src/widget.ts
+++ b/src/widget.ts
@@ -118,12 +118,15 @@ export const widget = ((): WidgetHelpers | null => {
         "org.matrix.rageshake_request",
         EventType.CallEncryptionKeysPrefix,
       ];
+
       const sendState = [
-        {
-          eventType: EventType.GroupCallMemberPrefix,
-          stateKey: userId, // TODO: based on if we use the new format we want the key to be: `_${userId}_${deviceId}`
-        },
-      ];
+        userId, // legacy call membership events
+        `_${userId}_${deviceId}`, // session membership events
+        `${userId}_${deviceId}`, // MSC3779 session membership events
+      ].map((stateKey) => ({
+        eventType: EventType.GroupCallMemberPrefix,
+        stateKey,
+      }));
       const receiveState = [
         { eventType: EventType.RoomCreate },
         { eventType: EventType.RoomMember },