Add directory watcher functionality

HyperbolicDownloaderApi/FileProcessing/DirectoryWatcher.cs

@@ -0,0 +1,100 @@
+using HyperbolicDownloaderApi.Managment;
+
+using System.Text.Json;
+using System.Timers;
+
+namespace HyperbolicDownloaderApi.FileProcessing;
+
+public class DirectoryWatcher
+{
+    private readonly FilesManager filesManager;
+
+    private readonly List<string> directories = new();
+    private readonly System.Timers.Timer timer = new(1);
+
+    public DirectoryWatcher(FilesManager filesManager)
+    {
+        this.filesManager = filesManager;
+
+        timer.AutoReset = false;
+        timer.Elapsed += Timer_Elapsed;
+    }
+
+    public bool TryAdd(string path, out string? errorMessage)
+    {
+        if (directories.Contains(path))
+        {
+            errorMessage = "Directory already tracked";
+            return false;
+        }
+
+        directories.Add(path);
+        errorMessage = null;
+
+        SaveDirectories();
+        return true;
+    }
+
+    public void AddRange(IEnumerable<string> directoryInfos)
+    {
+        foreach (string directoryInfo in directoryInfos)
+        {
+            if (Directory.Exists(directoryInfo) && !directories.Contains(directoryInfo))
+            {
+                directories.Add(directoryInfo);
+            }
+        }
+
+        SaveDirectories();
+    }
+
+    public bool TryRemove(string path)
+    {
+        if (!directories.Contains(path))
+        {
+            return false;
+        }
+
+        _ = directories.Remove(path);
+
+        SaveDirectories();
+        return true;
+    }
+
+    public void SaveDirectories()
+    {
+        File.WriteAllText(ApiConfiguration.DirectoriesInfoPath, JsonSerializer.Serialize(directories));
+    }
+
+    public List<string> ToList()
+    {
+        return directories;
+    }
+
+    public void Start()
+    {
+        timer.Start();
+    }
+
+    private void Timer_Elapsed(object? sender, ElapsedEventArgs e)
+    {
+        ApiManager.SendNotificationMessageNewLine("Checking for new files...", NotificationMessageType.Log);
+
+        timer.Interval = TimeSpan.FromMinutes(1).TotalMilliseconds;
+
+        foreach (string directory in directories)
+        {
+            ApiManager.SendNotificationMessageNewLine($"Checking directory: {directory}", NotificationMessageType.Log);
+            string[] files = Directory.GetFiles(directory, "*", SearchOption.AllDirectories);
+
+            foreach (string file in files)
+            {
+                _ = filesManager.TryAdd(file, out _, out _);
+            }
+        }
+
+        ApiManager.SendNotificationMessageNewLine("Finished checking for new files.", NotificationMessageType.Log);
+
+        filesManager.RemoveFilesThatDontExist();
+    }
+}

HyperbolicDownloaderApi/FileProcessing/FilesManager.cs

@@ -1,5 +1,6 @@
 using HyperbolicDownloaderApi.Managment;
 
+using System.Diagnostics;
 using System.Text.Json;
 
 namespace HyperbolicDownloaderApi.FileProcessing;
@@ -31,10 +32,16 @@ public class FilesManager
         if (Contains(hash))
         {
             fileInfo = null;
+            Debug.WriteLine(filePath + "-.-" + hash);
             errorMessage = "File already tracked!";
             return false;
         }
 
+        if (files.Exists(f => f.FilePath == fullPath))
+        {
+            _ = files.RemoveAll(f => f.FilePath == fullPath);
+        }
+
         fileInfo = new PrivateHyperFileInfo(hash, fullPath);
 
         files.Add(fileInfo);
@@ -91,6 +98,20 @@ public class FilesManager
         return files.ToList();
     }
 
+    internal void RemoveFilesThatDontExist()
+    {
+        List<PrivateHyperFileInfo> filesToRemove = files
+            .Where(f => !File.Exists(f.FilePath))
+            .ToList();
+
+        foreach (PrivateHyperFileInfo fileToRemove in filesToRemove)
+        {
+            _ = files.Remove(fileToRemove);
+        }
+
+        SaveFiles();
+    }
+
     private void SaveFiles()
     {
         File.WriteAllText(ApiConfiguration.FilesInfoPath, JsonSerializer.Serialize(files));