Switching project to C# (because why not)

OpenSaveCloudClient/Core/TaskManager.cs

@@ -0,0 +1,77 @@
+using OpenSaveCloudClient.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OpenSaveCloudClient.Core
+{
+    public class TaskManager
+    {
+
+        private static TaskManager instance;
+        private readonly System.Timers.Timer timer;
+
+        private readonly Dictionary<string, AsyncTaskInformation> _tasks;
+        private readonly Mutex mut;
+
+        private TaskManager()
+        {
+            _tasks = new Dictionary<string, AsyncTaskInformation>();
+            mut = new Mutex();
+            timer = new System.Timers.Timer
+            {
+                Interval = 2000
+            };
+            timer.Elapsed += timer_Tick;
+            timer.Start();
+        }
+
+        public static TaskManager GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new TaskManager();
+            }
+            return instance;
+        }
+
+        public string StartTask(string label, int progressMax)
+        {
+            string uuid = Guid.NewGuid().ToString();
+            _tasks.Add(uuid, new AsyncTaskInformation(label, progressMax));
+            return uuid;
+        }
+
+        public AsyncTaskInformation GetTask(string uuid)
+        {
+            return _tasks[uuid];
+        }
+
+        private void timer_Tick(object? sender, EventArgs e)
+        {
+            mut.WaitOne();
+            try
+            {
+                List<string> toDelete = new();
+                foreach (KeyValuePair<string, AsyncTaskInformation> task in _tasks)
+                {
+                    if (task.Value.Status == AsyncTaskStatus.Ended)
+                    {
+                        toDelete.Add(task.Key);
+                    }
+                }
+                foreach (string uuid in toDelete)
+                {
+                    _tasks.Remove(uuid);
+                }
+            }
+            finally
+            {
+                mut.ReleaseMutex();
+            }
+        }
+
+    }
+}