From bfcd1b520fd79b893e721ba916ae5e1656407d2f Mon Sep 17 00:00:00 2001
From: Luke Pulverenti <luke.pulverenti@gmail.com>
Date: Wed, 16 Aug 2017 02:43:41 -0400
Subject: merge common implementations and server implementations

---
 .../ScheduledTasks/Tasks/DeleteCacheFileTask.cs    | 215 +++++++++++++++++++++
 1 file changed, 215 insertions(+)
 create mode 100644 Emby.Server.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs

(limited to 'Emby.Server.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs')

diff --git a/Emby.Server.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs b/Emby.Server.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs
new file mode 100644
index 000000000..701358fd4
--- /dev/null
+++ b/Emby.Server.Implementations/ScheduledTasks/Tasks/DeleteCacheFileTask.cs
@@ -0,0 +1,215 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Model.IO;
+using MediaBrowser.Model.Logging;
+using MediaBrowser.Model.Tasks;
+
+namespace Emby.Server.Implementations.ScheduledTasks.Tasks
+{
+    /// <summary>
+    /// Deletes old cache files
+    /// </summary>
+    public class DeleteCacheFileTask : IScheduledTask, IConfigurableScheduledTask
+    {
+        /// <summary>
+        /// Gets or sets the application paths.
+        /// </summary>
+        /// <value>The application paths.</value>
+        private IApplicationPaths ApplicationPaths { get; set; }
+
+        private readonly ILogger _logger;
+
+        private readonly IFileSystem _fileSystem;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="DeleteCacheFileTask" /> class.
+        /// </summary>
+        public DeleteCacheFileTask(IApplicationPaths appPaths, ILogger logger, IFileSystem fileSystem)
+        {
+            ApplicationPaths = appPaths;
+            _logger = logger;
+            _fileSystem = fileSystem;
+        }
+
+        /// <summary>
+        /// Creates the triggers that define when the task will run
+        /// </summary>
+        /// <returns>IEnumerable{BaseTaskTrigger}.</returns>
+        public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
+        {
+            return new[] { 
+            
+                // Every so often
+                new TaskTriggerInfo { Type = TaskTriggerInfo.TriggerInterval, IntervalTicks = TimeSpan.FromHours(24).Ticks}
+            };
+        }
+
+        /// <summary>
+        /// Returns the task to be executed
+        /// </summary>
+        /// <param name="cancellationToken">The cancellation token.</param>
+        /// <param name="progress">The progress.</param>
+        /// <returns>Task.</returns>
+        public Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
+        {
+            var minDateModified = DateTime.UtcNow.AddDays(-30);
+
+            try
+            {
+                DeleteCacheFilesFromDirectory(cancellationToken, ApplicationPaths.CachePath, minDateModified, progress);
+            }
+            catch (DirectoryNotFoundException)
+            {
+                // No biggie here. Nothing to delete
+            }
+
+            progress.Report(90);
+
+            minDateModified = DateTime.UtcNow.AddDays(-1);
+
+            try
+            {
+                DeleteCacheFilesFromDirectory(cancellationToken, ApplicationPaths.TempDirectory, minDateModified, progress);
+            }
+            catch (DirectoryNotFoundException)
+            {
+                // No biggie here. Nothing to delete
+            }
+
+            return Task.FromResult(true);
+        }
+
+
+        /// <summary>
+        /// Deletes the cache files from directory with a last write time less than a given date
+        /// </summary>
+        /// <param name="cancellationToken">The task cancellation token.</param>
+        /// <param name="directory">The directory.</param>
+        /// <param name="minDateModified">The min date modified.</param>
+        /// <param name="progress">The progress.</param>
+        private void DeleteCacheFilesFromDirectory(CancellationToken cancellationToken, string directory, DateTime minDateModified, IProgress<double> progress)
+        {
+            var filesToDelete = _fileSystem.GetFiles(directory, true)
+                .Where(f => _fileSystem.GetLastWriteTimeUtc(f) < minDateModified)
+                .ToList();
+
+            var index = 0;
+
+            foreach (var file in filesToDelete)
+            {
+                double percent = index;
+                percent /= filesToDelete.Count;
+
+                progress.Report(100 * percent);
+
+                cancellationToken.ThrowIfCancellationRequested();
+
+                DeleteFile(file.FullName);
+
+                index++;
+            }
+
+            DeleteEmptyFolders(directory);
+
+            progress.Report(100);
+        }
+
+        private void DeleteEmptyFolders(string parent)
+        {
+            foreach (var directory in _fileSystem.GetDirectoryPaths(parent))
+            {
+                DeleteEmptyFolders(directory);
+                if (!_fileSystem.GetFileSystemEntryPaths(directory).Any())
+                {
+                    try
+                    {
+                        _fileSystem.DeleteDirectory(directory, false);
+                    }
+                    catch (UnauthorizedAccessException ex)
+                    {
+                        _logger.ErrorException("Error deleting directory {0}", ex, directory);
+                    }
+                    catch (IOException ex)
+                    {
+                        _logger.ErrorException("Error deleting directory {0}", ex, directory);
+                    }
+                }
+            }
+        }
+
+        private void DeleteFile(string path)
+        {
+            try
+            {
+                _fileSystem.DeleteFile(path);
+            }
+            catch (UnauthorizedAccessException ex)
+            {
+                _logger.ErrorException("Error deleting file {0}", ex, path);
+            }
+            catch (IOException ex)
+            {
+                _logger.ErrorException("Error deleting file {0}", ex, path);
+            }
+        }
+
+        /// <summary>
+        /// Gets the name of the task
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name
+        {
+            get { return "Cache file cleanup"; }
+        }
+
+        public string Key
+        {
+            get { return "DeleteCacheFiles"; }
+        }
+
+        /// <summary>
+        /// Gets the description.
+        /// </summary>
+        /// <value>The description.</value>
+        public string Description
+        {
+            get { return "Deletes cache files no longer needed by the system"; }
+        }
+
+        /// <summary>
+        /// Gets the category.
+        /// </summary>
+        /// <value>The category.</value>
+        public string Category
+        {
+            get
+            {
+                return "Maintenance";
+            }
+        }
+
+        /// <summary>
+        /// Gets a value indicating whether this instance is hidden.
+        /// </summary>
+        /// <value><c>true</c> if this instance is hidden; otherwise, <c>false</c>.</value>
+        public bool IsHidden
+        {
+            get { return true; }
+        }
+
+        public bool IsEnabled
+        {
+            get { return true; }
+        }
+
+        public bool IsLogged
+        {
+            get { return true; }
+        }
+    }
+}
-- 
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