From 9dd9e741f34aeb49a15a939ec7f8495a992d8bf8 Mon Sep 17 00:00:00 2001
From: arkon <eugcheung94@gmail.com>
Date: Mon, 12 Dec 2022 22:37:37 -0500
Subject: [PATCH] Convert download cache/queue flows into SharedFlows

Fixes #8727
---
 .../eu/kanade/tachiyomi/data/download/DownloadCache.kt     | 6 +++++-
 .../kanade/tachiyomi/data/download/model/DownloadQueue.kt  | 7 ++++++-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
index 5fe0dda0f..a457c069c 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/DownloadCache.kt
@@ -19,10 +19,12 @@ import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.launchIn
 import kotlinx.coroutines.flow.onEach
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.flow.shareIn
 import kotlinx.coroutines.withTimeout
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
@@ -47,7 +49,9 @@ class DownloadCache(
     private val scope = CoroutineScope(Dispatchers.IO)
 
     private val _changes: Channel<Unit> = Channel(Channel.UNLIMITED)
-    val changes = _changes.receiveAsFlow().onStart { emit(Unit) }
+    val changes = _changes.receiveAsFlow()
+        .onStart { emit(Unit) }
+        .shareIn(scope, SharingStarted.Eagerly, 1)
 
     private val notifier by lazy { DownloadNotifier(context) }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt b/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
index 6a9245460..678060745 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/download/model/DownloadQueue.kt
@@ -10,9 +10,11 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.channels.Channel
 import kotlinx.coroutines.flow.Flow
+import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onStart
 import kotlinx.coroutines.flow.receiveAsFlow
+import kotlinx.coroutines.flow.shareIn
 import rx.Observable
 import rx.subjects.PublishSubject
 import java.util.concurrent.CopyOnWriteArrayList
@@ -27,7 +29,10 @@ class DownloadQueue(
     private val statusSubject = PublishSubject.create<Download>()
 
     private val _updates: Channel<Unit> = Channel(Channel.UNLIMITED)
-    val updates = _updates.receiveAsFlow().onStart { emit(Unit) }.map { queue }
+    val updates = _updates.receiveAsFlow()
+        .onStart { emit(Unit) }
+        .map { queue }
+        .shareIn(scope, SharingStarted.Eagerly, 1)
 
     fun addAll(downloads: List<Download>) {
         downloads.forEach { download ->