Cleanup file related code (#14023)

src/Jellyfin.Extensions/FileHelper.cs

@@ -0,0 +1,20 @@
+using System.IO;
+
+namespace Jellyfin.Extensions;
+
+/// <summary>
+/// Provides helper functions for <see cref="File" />.
+/// </summary>
+public static class FileHelper
+{
+    /// <summary>
+    /// Creates, or truncates a file in the specified path.
+    /// </summary>
+    /// <param name="path">The path and name of the file to create.</param>
+    public static void CreateEmpty(string path)
+    {
+        using (File.OpenHandle(path, FileMode.Create, FileAccess.ReadWrite, FileShare.None))
+        {
+        }
+    }
+}

src/Jellyfin.LiveTv/Channels/ChannelManager.cs

@@ -363,7 +363,7 @@ namespace Jellyfin.LiveTv.Channels
 
             Directory.CreateDirectory(Path.GetDirectoryName(path));
 
-            FileStream createStream = File.Create(path);
+            FileStream createStream = AsyncFile.Create(path);
             await using (createStream.ConfigureAwait(false))
             {
                 await JsonSerializer.SerializeAsync(createStream, mediaSources, _jsonOptions).ConfigureAwait(false);
@@ -866,7 +866,7 @@ namespace Jellyfin.LiveTv.Channels
             {
                 Directory.CreateDirectory(Path.GetDirectoryName(path));
 
-                var createStream = File.Create(path);
+                var createStream = AsyncFile.Create(path);
                 await using (createStream.ConfigureAwait(false))
                 {
                     await JsonSerializer.SerializeAsync(createStream, result, _jsonOptions).ConfigureAwait(false);