From fcd010d30812664e5b3df539fc30b10d8b23a96a Mon Sep 17 00:00:00 2001
From: Shadowghost <Shadowghost@users.noreply.github.com>
Date: Tue, 15 Sep 2026 11:16:03 -0400
Subject: Backport pull request #17935 from jellyfin/release-12.z

Fix EPG issues

Original-merge: a423a2eaba674f7ce36a8f8c8da7b4d6b75f9f39

Merged-by: crobibero <cody@robibe.ro>

Backported-by: Cody Robibero <cody@robibe.ro>
---
 src/Jellyfin.LiveTv/Guide/GuideManager.cs | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

(limited to 'src/Jellyfin.LiveTv/Guide/GuideManager.cs')

diff --git a/src/Jellyfin.LiveTv/Guide/GuideManager.cs b/src/Jellyfin.LiveTv/Guide/GuideManager.cs
index 41520f8789..a11f83f2f8 100644
--- a/src/Jellyfin.LiveTv/Guide/GuideManager.cs
+++ b/src/Jellyfin.LiveTv/Guide/GuideManager.cs
@@ -125,12 +125,16 @@ public class GuideManager : IGuideManager
             {
                 var innerProgress = new Progress<double>(p => progress.Report(p * progressPerService));
 
-                var idList = await RefreshChannelsInternal(service, innerProgress, cancellationToken).ConfigureAwait(false);
+                var (channelIds, programIds, hasErrors) = await RefreshChannelsInternal(service, innerProgress, cancellationToken).ConfigureAwait(false);
 
-                newChannelIdList.AddRange(idList.Item1);
-                newProgramIdList.AddRange(idList.Item2);
+                newChannelIdList.AddRange(channelIds);
+                newProgramIdList.AddRange(programIds);
+
+                // The channels that failed did not report any programs, so cleaning the database
+                // would delete every program they provide instead of keeping the previous ones.
+                cleanDatabase &= !hasErrors;
             }
-            catch (OperationCanceledException)
+            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
             {
                 throw;
             }
@@ -172,10 +176,12 @@ public class GuideManager : IGuideManager
             : 7;
     }
 
-    private async Task<Tuple<List<Guid>, List<Guid>>> RefreshChannelsInternal(ILiveTvService service, IProgress<double> progress, CancellationToken cancellationToken)
+    private async Task<(List<Guid> ChannelIds, List<Guid> ProgramIds, bool HasErrors)> RefreshChannelsInternal(ILiveTvService service, IProgress<double> progress, CancellationToken cancellationToken)
     {
         progress.Report(10);
 
+        var hasErrors = false;
+
         var allChannelsList = (await service.GetChannelsAsync(cancellationToken).ConfigureAwait(false))
             .Select(i => new Tuple<string, ChannelInfo>(service.Name, i))
             .ToList();
@@ -195,12 +201,13 @@ public class GuideManager : IGuideManager
 
                 list.Add(item);
             }
-            catch (OperationCanceledException)
+            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
             {
                 throw;
             }
             catch (Exception ex)
             {
+                hasErrors = true;
                 _logger.LogError(ex, "Error getting channel information for {Name}", channelInfo.Item2.Name);
             }
 
@@ -314,12 +321,13 @@ public class GuideManager : IGuideManager
                     },
                     cancellationToken).ConfigureAwait(false);
             }
-            catch (OperationCanceledException)
+            catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested)
             {
                 throw;
             }
             catch (Exception ex)
             {
+                hasErrors = true;
                 _logger.LogError(ex, "Error getting programs for channel {Name}", currentChannel.Name);
             }
 
@@ -330,7 +338,7 @@ public class GuideManager : IGuideManager
         }
 
         progress.Report(100);
-        return new Tuple<List<Guid>, List<Guid>>(channels, programIds);
+        return (channels, programIds, hasErrors);
     }
 
     private void CleanDatabase(Guid[] currentIdList, BaseItemKind[] validTypes, IProgress<double> progress, CancellationToken cancellationToken)
-- 
cgit v1.2.3