Finished

BitPlus.IO.Directory.Watcher/BitPlus.IO.Directory.Watcher/DirectoryFileEventArgs.cs

@@ -0,0 +1,15 @@
+namespace BitPlus.IO.Directory.Watcher;
+
+public sealed class DirectoryFileEventArgs : EventArgs
+{
+    public string FullPath { get; }
+    public EventMode Mode { get; }
+    public string? OldFullPath { get; }
+
+    public DirectoryFileEventArgs(string fullPath, EventMode mode, string? oldFullPath = null)
+    {
+        this.FullPath = fullPath;
+        this.Mode = mode;
+        this.OldFullPath = oldFullPath;
+    }
+}

BitPlus.IO.Directory.Watcher/BitPlus.IO.Directory.Watcher/DirectoryWatcher.cs

@@ -1,6 +1,125 @@
-namespace BitPlus.IO.Directory.Watcher;
+using System.Collections.Concurrent;
+using Dir = System.IO.Directory;
 
-public class DirectoryWatcher
+namespace BitPlus.IO.Directory.Watcher;
+
+public sealed class DirectoryWatcher : IDisposable
 {
+    private readonly FileSystemWatcher _watcher;
+    private readonly ConcurrentDictionary<string, DateTimeOffset> _lastEventTimes = new();
+    private readonly TimeSpan _dedupeWindow = TimeSpan.FromMilliseconds(200);
+    private bool _disposed;
+
+    public string TargetDirectory { get; }
+    public bool IncludeSubdirectories
+    {
+        get => this._watcher.IncludeSubdirectories;
+        set => this._watcher.IncludeSubdirectories = value;
+    }
+
+    public event EventHandler<DirectoryFileEventArgs>? FileCreated;
+    public event EventHandler<DirectoryFileEventArgs>? FileChanged;
+    public event EventHandler<DirectoryFileEventArgs>? FileDeleted;
+    public event EventHandler<DirectoryFileEventArgs>? FileRenamed;
+    public event EventHandler<ErrorEventArgs>? WatcherError;
+
+    public DirectoryWatcher(string targetDirectory, string filter = "*.*")
+    {
+        if (string.IsNullOrWhiteSpace(targetDirectory))
+            throw new ArgumentException("Target directory cannot be empty.", nameof(targetDirectory));
+
+        if (!Dir.Exists(targetDirectory))
+            throw new DirectoryNotFoundException(targetDirectory);
+
+        this.TargetDirectory = targetDirectory;
+
+        this._watcher = new FileSystemWatcher(this.TargetDirectory, filter)
+        {
+            NotifyFilter = NotifyFilters.FileName | NotifyFilters.LastWrite | NotifyFilters.CreationTime,
+            IncludeSubdirectories = false,
+            EnableRaisingEvents = false
+        };
+
+        this._watcher.Created += this.OnCreated;
+        this._watcher.Changed += this.OnChanged;
+        this._watcher.Deleted += this.OnDeleted;
+        this._watcher.Renamed += this.OnRenamed;
+        this._watcher.Error += this.OnError;
+    }
+
+    public void Start()
+    {
+        this.ThrowIfDisposed();
+        this._watcher.EnableRaisingEvents = true;
+    }
+
+    public void Stop()
+    {
+        this.ThrowIfDisposed();
+        this._watcher.EnableRaisingEvents = false;
+    }
+
+    private void OnCreated(object? sender, FileSystemEventArgs e)
+    {
+        if (this.ShouldRaise(e.FullPath))
+            FileCreated?.Invoke(this, new DirectoryFileEventArgs(e.FullPath, EventMode.Created));
+    }
+
+    private void OnChanged(object? sender, FileSystemEventArgs e)
+    {
+        if (this.ShouldRaise(e.FullPath))
+            FileChanged?.Invoke(this, new DirectoryFileEventArgs(e.FullPath, EventMode.Changed));
+    }
+
+    private void OnDeleted(object? sender, FileSystemEventArgs e)
+    {
+        if (this.ShouldRaise(e.FullPath))
+            FileDeleted?.Invoke(this, new DirectoryFileEventArgs(e.FullPath, EventMode.Deleted));
+    }
+
+    private void OnRenamed(object? sender, RenamedEventArgs e)
+    {
+        if (this.ShouldRaise(e.FullPath))
+        {
+            var args = new DirectoryFileEventArgs(e.FullPath, EventMode.Renamed, e.OldFullPath);
+            FileChanged?.Invoke(this, args);
+            FileRenamed?.Invoke(this, args);
+        }
+    }
+
+    private void OnError(object? sender, ErrorEventArgs e)
+        => WatcherError?.Invoke(this, e);
+
+    private bool ShouldRaise(string fullPath)
+    {
+        var now = DateTimeOffset.UtcNow;
+
+        if (this._lastEventTimes.TryGetValue(fullPath, out var last))
+        {
+            if (now - last < this._dedupeWindow)
+                return false;
+        }
+
+        this._lastEventTimes[fullPath] = now;
+        return true;
+    }
+
+    private void ThrowIfDisposed()
+    {
+        if (this._disposed)
+            throw new ObjectDisposedException(nameof(DirectoryWatcher));
+    }
+
+    public void Dispose()
+    {
+        if (this._disposed) return;
+        this._disposed = true;
 
+        this._watcher.Created -= this.OnCreated;
+        this._watcher.Changed -= this.OnChanged;
+        this._watcher.Deleted -= this.OnDeleted;
+        this._watcher.Renamed -= this.OnRenamed;
+        this._watcher.Error -= this.OnError;
+        this._watcher.Dispose();
+    }
 }

BitPlus.IO.Directory.Watcher/BitPlus.IO.Directory.Watcher/EventMode.cs

@@ -0,0 +1,9 @@
+namespace BitPlus.IO.Directory.Watcher;
+
+public enum EventMode
+{
+    Created,
+    Changed,
+    Deleted,
+    Renamed
+}

BitPlus.IO.Directory.Watcher/BitPlus.IO.Directory.Watcher/bin/Debug/net10.0/BitPlus.IO.Directory.Watcher.deps.json

@@ -0,0 +1,23 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v10.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v10.0": {
+      "BitPlus.IO.Directory.Watcher/1.0.0": {
+        "runtime": {
+          "BitPlus.IO.Directory.Watcher.dll": {}
+        }
+      }
+    }
+  },
+  "libraries": {
+    "BitPlus.IO.Directory.Watcher/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

BitPlus.IO.Directory.Watcher/Sampl/Program.cs

@@ -1,7 +1,34 @@
-internal class Program
+using BitPlus.IO.Directory.Watcher;
+
+internal class Program
 {
     private static void Main(string[] args)
     {
-        Console.WriteLine("Hello, World!");
+        var path = args.Length > 0 ? args[0] : null;
+
+        while (string.IsNullOrWhiteSpace(path) || !Directory.Exists(path))
+        {
+            Console.Write("감시할 폴더 경로를 입력하세요(Enter the folder path to monitor.): ");
+            path = Console.ReadLine();
+
+            if (string.IsNullOrWhiteSpace(path))
+                Console.WriteLine("경로가 비어 있습니다.(The path is empty.)");
+            else if (!Directory.Exists(path))
+                Console.WriteLine("폴더가 존재하지 않습니다.(The folder does not exist.)");
+        }
+
+        using var watcher = new DirectoryWatcher(path);
+        watcher.FileCreated += (_, e) => Console.WriteLine($"[CREATE] {e.FullPath}");
+        watcher.FileChanged += (_, e) => Console.WriteLine($"[CHANGE] {e.FullPath}");
+        watcher.FileDeleted += (_, e) => Console.WriteLine($"[DELETE] {e.FullPath}");
+        watcher.FileRenamed += (_, e) => Console.WriteLine($"[RENAME] {e.OldFullPath} -> {e.FullPath}");
+        watcher.WatcherError += (_, e) => Console.WriteLine($"[ERROR] {e.GetException().Message}");
+
+        watcher.Start();
+        Console.WriteLine($"감시 시작(Start the surveillance): {path}");
+        Console.WriteLine("종료하려면 Enter를 누르세요...(Press Enter to exit)");
+
+        Console.ReadLine();
+        watcher.Stop();
     }
 }

BitPlus.IO.Directory.Watcher/Sampl/bin/Debug/net10.0/Sample.deps.json

@@ -0,0 +1,39 @@
+{
+  "runtimeTarget": {
+    "name": ".NETCoreApp,Version=v10.0",
+    "signature": ""
+  },
+  "compilationOptions": {},
+  "targets": {
+    ".NETCoreApp,Version=v10.0": {
+      "Sample/1.0.0": {
+        "dependencies": {
+          "BitPlus.IO.Directory.Watcher": "1.0.0"
+        },
+        "runtime": {
+          "Sample.dll": {}
+        }
+      },
+      "BitPlus.IO.Directory.Watcher/1.0.0": {
+        "runtime": {
+          "BitPlus.IO.Directory.Watcher.dll": {
+            "assemblyVersion": "1.0.0.0",
+            "fileVersion": "1.0.0.0"
+          }
+        }
+      }
+    }
+  },
+  "libraries": {
+    "Sample/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    },
+    "BitPlus.IO.Directory.Watcher/1.0.0": {
+      "type": "project",
+      "serviceable": false,
+      "sha512": ""
+    }
+  }
+}

BitPlus.IO.Directory.Watcher/Sampl/bin/Debug/net10.0/Sample.runtimeconfig.json

@@ -0,0 +1,12 @@
+{
+  "runtimeOptions": {
+    "tfm": "net10.0",
+    "framework": {
+      "name": "Microsoft.NETCore.App",
+      "version": "10.0.0"
+    },
+    "configProperties": {
+      "System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization": false
+    }
+  }
+}

README.md

@@ -2,3 +2,5 @@
 
 디렉터리를 감시 및 변경에 따른 이벤트 처리기  
 Event handlers for monitoring and changing directories
+
+![sample](./sample.png)