Feat: UI/UX y Procesos

src/Backend/WhatsappPromo.Worker/Controllers/ConfigController.cs

@@ -1,7 +1,9 @@
 using Microsoft.AspNetCore.Mvc;
 using System;
 using System.IO;
+using System.Threading;
 using System.Threading.Tasks;
+using System.Windows.Forms;
 using WhatsappPromo.Core.Models;
 using WhatsappPromo.Core.Services;
 
@@ -28,7 +30,6 @@ namespace WhatsappPromo.Worker.Controllers
         [HttpPost]
         public async Task<IActionResult> UpdateConfig([FromBody] SystemConfig config)
         {
-             // Validar ruta
              if (!string.IsNullOrEmpty(config.DownloadPath))
              {
                  try 
@@ -62,5 +63,64 @@ namespace WhatsappPromo.Worker.Controllers
              await _configService.UpdateConfigAsync(config);
              return Ok(new { status = "Stopping" });
         }
+
+        [System.Runtime.InteropServices.DllImport("user32.dll")]
+        [return: System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.Bool)]
+        private static extern bool SetForegroundWindow(IntPtr hWnd);
+
+        [System.Runtime.InteropServices.DllImport("user32.dll")]
+        private static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);
+
+        private static readonly IntPtr HWND_TOPMOST = new IntPtr(-1);
+        private const uint SWP_NOSIZE = 0x0001;
+        private const uint SWP_NOMOVE = 0x0002;
+        private const uint SWP_SHOWWINDOW = 0x0040;
+
+        [HttpGet("browse")]
+        public IActionResult Browse()
+        {
+            string? selectedPath = null;
+            
+            var thread = new Thread(() =>
+            {
+                using (var dummyForm = new Form())
+                {
+                    dummyForm.TopMost = true;
+                    // El form debe ser "real" para que Windows lo respete
+                    dummyForm.Width = 1; dummyForm.Height = 1;
+                    dummyForm.Opacity = 0.05;
+                    dummyForm.ShowInTaskbar = false;
+                    dummyForm.FormBorderStyle = FormBorderStyle.None;
+                    dummyForm.StartPosition = FormStartPosition.CenterScreen;
+                    
+                    dummyForm.Show();
+                    
+                    // Forzamos la posición al frente de todo
+                    SetWindowPos(dummyForm.Handle, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
+                    SetForegroundWindow(dummyForm.Handle);
+                    dummyForm.Activate();
+                    dummyForm.Focus();
+
+                    using (var fbd = new FolderBrowserDialog())
+                    {
+                        fbd.Description = "Selecciona la carpeta para descargas de WhatsApp";
+                        fbd.UseDescriptionForTitle = true;
+                        fbd.ShowNewFolderButton = true;
+                        
+                        if (fbd.ShowDialog(dummyForm) == DialogResult.OK)
+                        {
+                            selectedPath = fbd.SelectedPath;
+                        }
+                    }
+                    dummyForm.Close();
+                }
+            });
+
+            thread.SetApartmentState(ApartmentState.STA);
+            thread.Start();
+            thread.Join();
+
+            return Ok(new { path = selectedPath });
+        }
     }
 }