Fix various exceptions when using a debug Unity build

BetterSongSearch.csproj

@@ -125,7 +125,7 @@
       <HintPath>$(BeatSaberDir)\Libs\Newtonsoft.Json.dll</HintPath>
     </Reference>
     <Reference Include="protobuf-net">
-      <HintPath>E:\SteamLibrary\steamapps\common\Beat Saber\Libs\protobuf-net.dll</HintPath>
+      <HintPath>$(BeatSaberDir)\Libs\protobuf-net.dll</HintPath>
     </Reference>
     <Reference Include="SegmentedControl">
       <HintPath>$(BeatSaberDir)\Beat Saber_Data\Managed\SegmentedControl.dll</HintPath>

UI/DownloadHistoryView.cs

@@ -84,47 +84,45 @@ public async void ProcessDownloads(bool forceTableReload = false) {
 
 			RefreshTable(true);
 
-			await Task.Run(async () => {
-				void errored(string message) {
-					firstEntry.status = DownloadHistoryEntry.DownloadStatus.Failed;
-					firstEntry.statusDetails = $": {message}";
-					firstEntry.retries = 69;
-				}
+			void errored(string message) {
+				firstEntry.status = DownloadHistoryEntry.DownloadStatus.Failed;
+				firstEntry.statusDetails = $": {message}";
+				firstEntry.retries = 69;
+			}
 
-				try {
-					var updateRateLimiter = new Stopwatch();
-					updateRateLimiter.Start();
-
-					await SongDownloader.BeatmapDownload(firstEntry, BSSFlowCoordinator.closeCancelSource.Token, (float progress) => {
-						if(updateRateLimiter.ElapsedMilliseconds < 50)
-							return;
-
-						firstEntry.statusDetails = string.Format("({0:0%}{1})", progress, firstEntry.retries == 0 ? "" : $", retry #{firstEntry.retries} / {RETRY_COUNT}");
-						firstEntry.downloadProgress = progress;
-
-						updateRateLimiter.Restart();
-
-						if(firstEntry.UpdateProgressHandler != null)
-							IPA.Utilities.Async.UnityMainThreadTaskScheduler.Factory.StartNew(firstEntry.UpdateProgressHandler);
-					});
-
-					firstEntry.status = DownloadHistoryEntry.DownloadStatus.Downloaded;
-					firstEntry.statusDetails = "";
-				} catch(FileNotFoundException) {
-					errored("File not Found, Uploader probably deleted it");
-				} catch(TaskCanceledException) {
-					errored("Download was cancelled");
-				} catch(Exception ex) {
-					if(!(ex is TaskCanceledException)) {
-						Plugin.Log.Warn("Download failed:");
-						Plugin.Log.Warn(ex);
-					}
-
-					firstEntry.status = DownloadHistoryEntry.DownloadStatus.Failed;
-					firstEntry.statusDetails = $"{(firstEntry.retries < 3 ? "(Will retry)" : "")}: Details in log, {ex.Message} ({ex.GetType().Name})";
+			try {
+				var updateRateLimiter = new Stopwatch();
+				updateRateLimiter.Start();
+
+				await SongDownloader.BeatmapDownload(firstEntry, BSSFlowCoordinator.closeCancelSource.Token, (float progress) => {
+					if(updateRateLimiter.ElapsedMilliseconds < 50)
+						return;
+
+					firstEntry.statusDetails = string.Format("({0:0%}{1})", progress, firstEntry.retries == 0 ? "" : $", retry #{firstEntry.retries} / {RETRY_COUNT}");
+					firstEntry.downloadProgress = progress;
+
+					updateRateLimiter.Restart();
+
+					if(firstEntry.UpdateProgressHandler != null)
+						firstEntry.UpdateProgressHandler();
+				});
+
+				firstEntry.status = DownloadHistoryEntry.DownloadStatus.Downloaded;
+				firstEntry.statusDetails = "";
+			} catch(FileNotFoundException) {
+				errored("File not Found, Uploader probably deleted it");
+			} catch(TaskCanceledException) {
+				errored("Download was cancelled");
+			} catch(Exception ex) {
+				if(!(ex is TaskCanceledException)) {
+					Plugin.Log.Warn("Download failed:");
+					Plugin.Log.Warn(ex);
 				}
-				firstEntry.downloadProgress = 1f;
-			});
+
+				firstEntry.status = DownloadHistoryEntry.DownloadStatus.Failed;
+				firstEntry.statusDetails = $"{(firstEntry.retries < 3 ? "(Will retry)" : "")}: Details in log, {ex.Message} ({ex.GetType().Name})";
+			}
+			firstEntry.downloadProgress = 1f;
 
 			if(firstEntry.status == DownloadHistoryEntry.DownloadStatus.Downloaded) {
 				// NESTING HELLLL

UI/SelectedSongView.cs

@@ -46,6 +46,12 @@ void OnEnable() {
 
 			if(selectedSong != null)
 				SetIsDownloaded(selectedSong.CheckIsDownloaded(), selectedSong.CheckIsDownloadable());
+
+			if(soloFreePlayFlowCoordinator == null)
+				soloFreePlayFlowCoordinator = FindObjectOfType<SoloFreePlayFlowCoordinator>();
+
+			if(multiplayerLevelSelectionFlowCoordinator == null)
+				multiplayerLevelSelectionFlowCoordinator = FindObjectOfType<MultiplayerLevelSelectionFlowCoordinator>();
 		}
 
 		static internal SongPreviewPlayer songPreviewPlayer { get; private set; } = null;
@@ -116,7 +122,9 @@ internal async void SetSelectedSong(SongSearchSong song, bool selectInTableIfPos
 					await Task.WhenAll(new[] {
 						BSSFlowCoordinator.assetLoader.LoadCoverAsync(song.detailsSong, songAssetLoadCanceller.Token).ContinueWith(
 							x => { coverImage.sprite = x.Result; },
-							TaskContinuationOptions.OnlyOnRanToCompletion
+							CancellationToken.None,
+							TaskContinuationOptions.OnlyOnRanToCompletion,
+							TaskScheduler.FromCurrentSynchronizationContext()
 						),
 
 						!PluginConfig.Instance.loadSongPreviews ? Task.FromResult(1) : BSSFlowCoordinator.assetLoader.LoadPreviewAsync(song.detailsSong, songAssetLoadCanceller.Token).ContinueWith(
@@ -171,8 +179,8 @@ internal void PlayQueuedSongToPlay() {
 			songToPlayAfterLoading = null;
 		}
 
-		readonly SoloFreePlayFlowCoordinator soloFreePlayFlowCoordinator = FindObjectOfType<SoloFreePlayFlowCoordinator>();
-		readonly MultiplayerLevelSelectionFlowCoordinator multiplayerLevelSelectionFlowCoordinator = FindObjectOfType<MultiplayerLevelSelectionFlowCoordinator>();
+		SoloFreePlayFlowCoordinator soloFreePlayFlowCoordinator;
+		MultiplayerLevelSelectionFlowCoordinator multiplayerLevelSelectionFlowCoordinator;
 		static readonly ConstructorInfo LevelSelectionFlowCoordinator_State = AccessTools.FirstConstructor(typeof(LevelSelectionFlowCoordinator.State), x => x.GetParameters().Length == 4);
 
 		[UIAction("Play")] void _Play() => PlaySong();

UI/Views/SplitViews/UploadDetails.cs

@@ -3,7 +3,6 @@
 using HMUI;
 using System;
 using System.Linq;
-using System.Threading.Tasks;
 using TMPro;
 
 namespace BetterSongSearch.UI.SplitViews {
@@ -27,12 +26,12 @@ public async void Populate(SongSearchSong selectedSong) {
 
 			songDetailsLoading.gameObject.SetActive(true);
 
-			var desc = await Task.Run(async () => {
-				try {
-					return await BSSFlowCoordinator.assetLoader.GetSongDescription(selectedSong.detailsSong.key, BSSFlowCoordinator.closeCancelSource.Token);
-				} catch { }
-				return "Failed to load description";
-			});
+			string desc;
+			try {
+				desc = await BSSFlowCoordinator.assetLoader.GetSongDescription(selectedSong.detailsSong.key, BSSFlowCoordinator.closeCancelSource.Token);
+			} catch {
+				desc = "Failed to load description";
+			}
 
 			songDetailsLoading.gameObject.SetActive(false);
 			selectedSongDescription.text = desc;

Util/SongDownloader.cs

@@ -1,4 +1,5 @@
-using System;
+using IPA.Utilities.Async;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.IO.Compression;
@@ -33,8 +34,9 @@ public static async Task BeatmapDownload(DownloadHistoryEntry entry, Cancellatio
 				entry.status = DownloadHistoryEntry.DownloadStatus.Extracting;
 				progressCb(0);
 
-				// Not async'ing this as BeatmapDownload() is supposed to be called in a task
-				ExtractZip(s, folderName, t.Token, progressCb);
+				var sThread = SynchronizationContext.Current;
+
+				await Task.Run(() => ExtractZip(s, folderName, t.Token, (p) => sThread.Post(_ => progressCb(p), null)));
 			}
 		}
 

Util/UnityWebrequestWrapper.cs

@@ -21,42 +21,35 @@ public static async Task<bool> Download(string url, DownloadHandler handler, Can
 
 				var req = www.SendWebRequest();
 
-				var startThread = SynchronizationContext.Current;
-
-				Action<Action> post;
-
-				if(startThread == null) {
-					post = a => a();
-				} else {
-					post = a => startThread.Send(_ => a(), null);
-				}
+				var lastState = 0f;
+				var timeouter = new System.Diagnostics.Stopwatch();
+				timeouter.Start();
+
+				while(!req.isDone) {
+					if(token.IsCancellationRequested) {
+						www.Abort();
+						throw new TaskCanceledException();
+					}
 
-				await Task.Run(() => {
-					var lastState = 0f;
-					var timeouter = new System.Diagnostics.Stopwatch();
-					timeouter.Start();
+					await Task.Delay(20);
 
-					while(!req.isDone) {
-						if(token.IsCancellationRequested) {
-							post(www.Abort);
-							throw new TaskCanceledException();
-						}
+					if(lastState == www.downloadProgress) {
+						if(timeouter.ElapsedMilliseconds < (lastState == 0 ? 6000 : 10000))
+							continue;
 
-						if(timeouter.ElapsedMilliseconds > 50000 || (lastState == 0 && timeouter.ElapsedMilliseconds > 6000)) {
-							post(www.Abort);
-							throw new TimeoutException();
-						}
+						www.Abort();
+						throw new TimeoutException();
+					}
 
-						Thread.Sleep(20);
+					lastState = www.downloadProgress;
 
-						lastState = www.downloadProgress;
+					if(progressCb != null && lastState > 0)
+						progressCb(lastState);
 
-						if(progressCb != null && lastState > 0)
-							post(() => progressCb(lastState));
-					}
-				});
+					timeouter.Restart();
+				}
 
-				return www.isDone && !www.isHttpError && !www.isNetworkError;
+				return www.isDone && www.result == UnityWebRequest.Result.Success;
 			} finally {
 				if(www != null && uwr == null)
 					www.Dispose();