From 9fec550a98155c2ae173c4177bcf05135197f199 Mon Sep 17 00:00:00 2001
From: JanNiklas Grabowski <janniklas.grabowski.ext@bwi.de>
Date: Wed, 19 Apr 2023 12:48:53 +0200
Subject: [PATCH] update breadcrumb list when leaving a room

---
 MatrixSDK/MXSession.m | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/MatrixSDK/MXSession.m b/MatrixSDK/MXSession.m
index 051b41d12..d1d1242bc 100644
--- a/MatrixSDK/MXSession.m
+++ b/MatrixSDK/MXSession.m
@@ -3199,6 +3199,8 @@ - (void)removeRoom:(NSString *)roomId
         // And remove the room and its summary from the list
         [rooms removeObjectForKey:roomId];
         [roomSummaries removeObjectForKey:roomId];
+        // remove room from breadcrub list
+        [self removeBreadcrumbWithRoomId: roomId];
 
         // Broadcast the left room
         [[NSNotificationCenter defaultCenter] postNotificationName:kMXSessionDidLeaveRoomNotification
@@ -4758,6 +4760,24 @@ - (void)updateBreadcrumbsWithRoomWithId:(NSString *)roomId
     }];
 }
 
+// update breadcrub list when leaving a room
+- (void)removeBreadcrumbWithRoomId:(NSString *)roomId
+{
+    NSDictionary<NSString *, NSArray *> *breadcrumbs = [self.accountData accountDataForEventType:kMXAccountDataTypeBreadcrumbs];
+    
+    NSMutableArray<NSString *> *recentRoomIds = breadcrumbs[kMXAccountDataTypeRecentRoomsKey] ? [NSMutableArray arrayWithArray:breadcrumbs[kMXAccountDataTypeRecentRoomsKey]] : [NSMutableArray array];
+    
+    NSInteger index = [recentRoomIds indexOfObject:roomId];
+    if (index != NSNotFound)
+    {
+        [recentRoomIds removeObjectAtIndex:index];
+    }
+    
+    [self setAccountData:@{kMXAccountDataTypeRecentRoomsKey : recentRoomIds}
+                 forType:kMXAccountDataTypeBreadcrumbs
+                 success: nil failure: nil];
+}
+
 #pragma mark - Homeserver information
 - (MXWellKnown *)homeserverWellknown
 {