Enhance Spotify track retrieval in Updater.cs

Updated `Updater.cs` to improve functionality for retrieving the currently playing track in Spotify. Added new methods for window title retrieval and utilized the `EnumWindows` function to filter and identify relevant Spotify track titles. Included P/Invoke declarations for Windows API functions to support these enhancements, along with a new method `GetWindowTitle` for better code organization.

SpotifyHonorific/Updaters/Updater.cs

@@ -8,6 +8,8 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Runtime.InteropServices;
+using System.Text;
 using System.Threading.Tasks;
 using System.Timers;
 
@@ -147,25 +149,63 @@ public class Updater : IDisposable
         try
         {
             var spotifyProcesses = Process.GetProcessesByName("Spotify");
+            var trackTitles = new List<string>();
+
             foreach (var process in spotifyProcesses)
             {
-                if (!string.IsNullOrEmpty(process.MainWindowTitle) &&
-                    process.MainWindowTitle != "Spotify" &&
-                    process.MainWindowTitle != "Spotify Premium" &&
-                    process.MainWindowTitle != "Spotify Free")
+                EnumWindows((hWnd, lParam) =>
                 {
-                    return process.MainWindowTitle;
-                }
+                    uint processId;
+                    GetWindowThreadProcessId(hWnd, out processId);
+
+                    if (processId == process.Id)
+                    {
+                        var title = GetWindowTitle(hWnd);
+                        if (!string.IsNullOrEmpty(title) &&
+                            title != "Spotify" &&
+                            title != "Spotify Premium" &&
+                            title != "Spotify Free" &&
+                            title.Contains(" - "))
+                        {
+                            trackTitles.Add(title);
+                        }
+                    }
+                    return true;
+                }, IntPtr.Zero);
             }
+
+            return trackTitles.OrderByDescending(t => t.Length).FirstOrDefault();
         }
         catch (Exception ex)
         {
             PluginLog.Debug($"Error getting Spotify track: {ex.Message}");
         }
-
         return null;
     }
 
+    private string GetWindowTitle(IntPtr hWnd)
+    {
+        const int nChars = 256;
+        var buff = new StringBuilder(nChars);
+        if (GetWindowTextW(hWnd, buff, nChars) > 0)
+        {
+            return buff.ToString();
+        }
+        return string.Empty;
+    }
+
+
+    [DllImport("user32.dll")]
+    private static extern bool EnumWindows(EnumWindowsProc enumProc, IntPtr lParam);
+
+    [DllImport("user32.dll")]
+    private static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint lpdwProcessId);
+
+    [DllImport("user32.dll", CharSet = CharSet.Unicode)]
+    private static extern int GetWindowTextW(IntPtr hWnd, StringBuilder text, int count);
+
+    private delegate bool EnumWindowsProc(IntPtr hWnd, IntPtr lParam);
+
     private bool MediaActivitiesEqual(MediaActivity? a, MediaActivity? b)
     {
         if (a == null && b == null) return true;