Prompt user for old cache deletion

TwitchDownloaderCLI/Modes/DownloadVideo.cs

@@ -19,6 +19,13 @@ internal static void Download(VideoDownloadArgs inputOptions)
             progress.ProgressChanged += ProgressHandler.Progress_ProgressChanged;
 
             var downloadOptions = GetDownloadOptions(inputOptions);
+            downloadOptions.CacheCleanerCallback += directoryInfos =>
+            {
+                // TODO: Poll for user input with a timeout for scripts
+                ((IProgress<ProgressReport>)progress).Report(new ProgressReport(ReportType.Log, $"{directoryInfos.Length} unmanaged video caches were found in {downloadOptions.TempFolder} and can be safely deleted."));
+                return Array.Empty<DirectoryInfo>();
+            };
+
             VideoDownloader videoDownloader = new(downloadOptions, progress);
             videoDownloader.DownloadAsync(new CancellationToken()).Wait();
         }

TwitchDownloaderCore/Options/VideoDownloadOptions.cs

@@ -1,4 +1,7 @@
-namespace TwitchDownloaderCore.Options
+using System;
+using System.IO;
+
+namespace TwitchDownloaderCore.Options
 {
     public class VideoDownloadOptions
     {
@@ -14,5 +17,6 @@ public class VideoDownloadOptions
         public string Oauth { get; set; }
         public string FfmpegPath { get; set; }
         public string TempFolder { get; set; }
+        public Func<DirectoryInfo[], DirectoryInfo[]> CacheCleanerCallback { get; set; }
     }
 }

TwitchDownloaderCore/TwitchHelper.cs

@@ -1,5 +1,6 @@
 using SkiaSharp;
 using System;
+using System.Buffers;
 using System.Collections.Generic;
 using System.IO;
 using System.IO.Compression;
@@ -813,63 +814,58 @@ public static void SetDirectoryPermissions(string path)
         /// <summary>
         /// Cleans up any unmanaged cache files from previous runs that were interrupted before cleaning up
         /// </summary>
-        public static void CleanupUnmanagedCacheFiles(string cacheFolder, IProgress<ProgressReport> progress)
+        public static async Task CleanupAbandonedVideoCaches(string cacheFolder, Func<DirectoryInfo[], DirectoryInfo[]> itemsToDeleteCallback, IProgress<ProgressReport> progress)
         {
             if (!Directory.Exists(cacheFolder))
             {
                 return;
             }
 
-            // Let's delete any video download cache folders older than 24 hours
-            var videoFolderRegex = new Regex(@"\d+_(\d+)$", RegexOptions.RightToLeft); // Matches "...###_###" and captures the 2nd ###
-            var directories = Directory.GetDirectories(cacheFolder);
-            var directoriesDeleted = (from directory in directories
-                let videoFolderMatch = videoFolderRegex.Match(directory)
-                where videoFolderMatch.Success
-                where DeleteOldDirectory(directory, videoFolderMatch.Groups[1].ValueSpan)
-                select directory).Count();
-
-            if (directoriesDeleted > 0)
+            if (itemsToDeleteCallback == null)
             {
-                progress.Report(new ProgressReport(ReportType.Log, $"{directoriesDeleted} old video caches were deleted."));
+                // TODO: Log this
+                return;
             }
-        }
 
-        private static bool DeleteOldDirectory(string directory, ReadOnlySpan<char> directoryCreationMillis)
-        {
-            var downloadTime = long.Parse(directoryCreationMillis);
-            var currentTime = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds();
+            var videoFolderRegex = new Regex(@"\d+_\d+$", RegexOptions.RightToLeft);
+            var allCacheDirectories = Directory.GetDirectories(cacheFolder);
+
+            var oldVideoCaches = (from directory in allCacheDirectories
+                    where videoFolderRegex.IsMatch(directory)
+                    let directoryInfo = new DirectoryInfo(directory)
+                    where DateTime.UtcNow.Ticks - directoryInfo.LastWriteTimeUtc.Ticks > TimeSpan.TicksPerDay * 7
+                    select directoryInfo)
+                .ToArray();
 
-            const int TWENTY_FOUR_HOURS_MILLIS = 86_400_000;
-            if (currentTime - downloadTime > TWENTY_FOUR_HOURS_MILLIS * 7)
+            if (oldVideoCaches.Length == 0)
             {
-                try
-                {
-                    Directory.Delete(directory, true);
-                    return true;
-                }
-                catch { /* Eat the exception */ }
+                return;
             }
-            return false;
-        }
 
-        private static bool DeleteColdDirectory(string directory)
-        {
-            // Directory.GetLastWriteTimeUtc() works as expected on both Windows and MacOS. Assuming it does on Linux too
-            var directoryWriteTimeMillis = Directory.GetLastWriteTimeUtc(directory).Ticks / TimeSpan.TicksPerMillisecond;
-            var currentTimeMillis = DateTimeOffset.UtcNow.Ticks / TimeSpan.TicksPerMillisecond;
+            var toDelete = await Task.Run(() => itemsToDeleteCallback(oldVideoCaches));
+
+            if (toDelete == null || toDelete.Length == 0)
+            {
+                return;
+            }
 
-            const int SIX_HOURS_MILLIS = 21_600_000;
-            if (currentTimeMillis - directoryWriteTimeMillis > SIX_HOURS_MILLIS)
+            var wasDeleted = 0;
+            foreach (var directory in toDelete)
             {
                 try
                 {
-                    Directory.Delete(directory, true);
-                    return true;
+                    Directory.Delete(directory.FullName, true);
+                    wasDeleted++;
+                }
+                catch
+                {
+                    // Oh well
                 }
-                catch { /* Eat the exception */ }
             }
-            return false;
+
+            progress.Report(toDelete.Length == wasDeleted
+                ? new ProgressReport(ReportType.Log, $"{wasDeleted} old video caches were deleted.")
+                : new ProgressReport(ReportType.Log, $"{wasDeleted} old video caches were deleted, {toDelete.Length - wasDeleted} could not be deleted."));
         }
 
         public static int TimestampToSeconds(string input)

TwitchDownloaderCore/VideoDownloader.cs

@@ -36,11 +36,11 @@ public VideoDownloader(VideoDownloadOptions videoDownloadOptions, IProgress<Prog
 
         public async Task DownloadAsync(CancellationToken cancellationToken)
         {
-            TwitchHelper.CleanupUnmanagedCacheFiles(downloadOptions.TempFolder, _progress);
+            await TwitchHelper.CleanupAbandonedVideoCaches(downloadOptions.TempFolder, downloadOptions.CacheCleanerCallback, _progress);
 
             string downloadFolder = Path.Combine(
                 downloadOptions.TempFolder,
-                $"{downloadOptions.Id}_{DateTimeOffset.UtcNow.ToUnixTimeMilliseconds()}");
+                $"{downloadOptions.Id}_{DateTimeOffset.UtcNow.Ticks}");
 
             _progress.Report(new ProgressReport(ReportType.SameLineStatus, "Fetching Video Info [1/5]"));
 

TwitchDownloaderWPF/PageVodDownload.xaml.cs

@@ -423,6 +423,7 @@ private async void SplitBtnDownloader_Click(object sender, RoutedEventArgs e)
             btnGetInfo.IsEnabled = false;
 
             VideoDownloadOptions options = GetOptions(saveFileDialog.FileName, null);
+            options.CacheCleanerCallback = HandleCacheCleanerCallback;
 
             Progress<ProgressReport> downloadProgress = new Progress<ProgressReport>(OnProgressChanged);
             VideoDownloader currentDownload = new VideoDownloader(options, downloadProgress);
@@ -461,6 +462,21 @@ private async void SplitBtnDownloader_Click(object sender, RoutedEventArgs e)
             GC.Collect();
         }
 
+        private DirectoryInfo[] HandleCacheCleanerCallback(DirectoryInfo[] directories)
+        {
+            return Dispatcher.Invoke(() =>
+            {
+                var window = new WindowOldVideoCacheManager(directories)
+                {
+                    Owner = Application.Current.MainWindow,
+                    WindowStartupLocation = WindowStartupLocation.CenterOwner
+                };
+                window.ShowDialog();
+
+                return window.GetItemsToDelete();
+            });
+        }
+
         private void BtnCancel_Click(object sender, RoutedEventArgs e)
         {
             statusMessage.Text = Translations.Strings.StatusCanceling;

TwitchDownloaderWPF/Translations/Strings.es.resx

@@ -818,4 +818,25 @@
   <data name="PreferredQuality" xml:space="preserve">
     <value>Preferred Quality:</value>
   </data>
+  <data name="TitleWindowOldVideoCacheManager" xml:space="preserve">
+    <value>Select Caches To Delete</value>
+  </data>
+  <data name="SizeOfAllFiles" xml:space="preserve">
+    <value>Total Size:</value>
+  </data>
+  <data name="DeleteCacheColumnHeader" xml:space="preserve">
+    <value>Delete</value>
+  </data>
+  <data name="FilePathColumnHeader" xml:space="preserve">
+    <value>Path</value>
+  </data>
+  <data name="FileAgeColumnHeader" xml:space="preserve">
+    <value>Age</value>
+  </data>
+  <data name="FileSizeColumnHeader" xml:space="preserve">
+    <value>Size</value>
+  </data>
+  <data name="FileAgeInDays" xml:space="preserve">
+    <value>{0:N0} days</value>
+  </data>
 </root>

TwitchDownloaderWPF/Translations/Strings.fr.resx

@@ -816,4 +816,25 @@
   <data name="PreferredQuality" xml:space="preserve">
     <value>Qualité préférée:</value>
   </data>
+  <data name="TitleWindowOldVideoCacheManager" xml:space="preserve">
+    <value>Select Caches To Delete</value>
+  </data>
+  <data name="SizeOfAllFiles" xml:space="preserve">
+    <value>Total Size:</value>
+  </data>
+  <data name="DeleteCacheColumnHeader" xml:space="preserve">
+    <value>Delete</value>
+  </data>
+  <data name="FilePathColumnHeader" xml:space="preserve">
+    <value>Path</value>
+  </data>
+  <data name="FileAgeColumnHeader" xml:space="preserve">
+    <value>Age</value>
+  </data>
+  <data name="FileSizeColumnHeader" xml:space="preserve">
+    <value>Size</value>
+  </data>
+  <data name="FileAgeInDays" xml:space="preserve">
+    <value>{0:N0} days</value>
+  </data>
 </root>

TwitchDownloaderWPF/Translations/Strings.it.resx

@@ -812,10 +812,30 @@
     <value>Remove</value>
   </data>
   <data name="ContextMenuOpenTaskFolder" xml:space="preserve">
-    <value>Open folder
-</value>
+    <value>Open folder</value>
   </data>
   <data name="PreferredQuality" xml:space="preserve">
     <value>Preferred Quality:</value>
   </data>
+  <data name="TitleWindowOldVideoCacheManager" xml:space="preserve">
+    <value>Select Caches To Delete</value>
+  </data>
+  <data name="SizeOfAllFiles" xml:space="preserve">
+    <value>Total Size:</value>
+  </data>
+  <data name="DeleteCacheColumnHeader" xml:space="preserve">
+    <value>Delete</value>
+  </data>
+  <data name="FilePathColumnHeader" xml:space="preserve">
+    <value>Path</value>
+  </data>
+  <data name="FileAgeColumnHeader" xml:space="preserve">
+    <value>Age</value>
+  </data>
+  <data name="FileSizeColumnHeader" xml:space="preserve">
+    <value>Size</value>
+  </data>
+  <data name="FileAgeInDays" xml:space="preserve">
+    <value>{0:N0} days</value>
+  </data>
 </root>

TwitchDownloaderWPF/Translations/Strings.pl.resx

@@ -816,4 +816,25 @@
   <data name="PreferredQuality" xml:space="preserve">
     <value>Preferred Quality:</value>
   </data>
+  <data name="TitleWindowOldVideoCacheManager" xml:space="preserve">
+    <value>Select Caches To Delete</value>
+  </data>
+  <data name="SizeOfAllFiles" xml:space="preserve">
+    <value>Total Size:</value>
+  </data>
+  <data name="DeleteCacheColumnHeader" xml:space="preserve">
+    <value>Delete</value>
+  </data>
+  <data name="FilePathColumnHeader" xml:space="preserve">
+    <value>Path</value>
+  </data>
+  <data name="FileAgeColumnHeader" xml:space="preserve">
+    <value>Age</value>
+  </data>
+  <data name="FileSizeColumnHeader" xml:space="preserve">
+    <value>Size</value>
+  </data>
+  <data name="FileAgeInDays" xml:space="preserve">
+    <value>{0:N0} days</value>
+  </data>
 </root>