From bd7a4a83728c5efb724ba1d415293e5c51079509 Mon Sep 17 00:00:00 2001
From: Vitor Pamplona <vitor@vitorpamplona.com>
Date: Wed, 25 Jan 2023 19:09:18 -0300
Subject: [PATCH] Concurrent modification exception bugfix

---
 .../amethyst/service/NostrThreadDataSource.kt         | 11 ++++++++---
 .../amethyst/ui/screen/loggedIn/HomeScreen.kt         |  2 --
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt
index 81cd6bb03..5447b7458 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/service/NostrThreadDataSource.kt
@@ -25,8 +25,11 @@ object NostrThreadDataSource: NostrDataSource<Note>("SingleThreadFeed") {
   }
 
   fun createLoadEventsIfNotLoadedFilter(): JsonFilter? {
-    val eventsToLoad = eventsToWatch
-      .map { LocalCache.notes[it] }
+    val nodes = synchronized(eventsToWatch) {
+      eventsToWatch.map { LocalCache.notes[it] }
+    }
+
+    val eventsToLoad = nodes
       .filterNotNull()
       .filter { it.event == null }
       .map { it.idHex.substring(0, 8) }
@@ -85,7 +88,9 @@ object NostrThreadDataSource: NostrDataSource<Note>("SingleThreadFeed") {
       thread.add(note)
       threadSet.add(note)
 
-      note.replies.forEach {
+      synchronized(note.replies) {
+        note.replies.toList()
+      }.forEach {
         loadDown(it, thread, threadSet)
       }
     }
diff --git a/app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HomeScreen.kt b/app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HomeScreen.kt
index 632a3fcb2..4401126c2 100644
--- a/app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HomeScreen.kt
+++ b/app/src/main/java/com/vitorpamplona/amethyst/ui/screen/loggedIn/HomeScreen.kt
@@ -79,8 +79,6 @@ fun HomeScreen(accountViewModel: AccountViewModel, navController: NavController)
                     1 -> FeedView(feedViewModelReplies, accountViewModel, navController)
                 }
             }
-
-
         }
     }
 }
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