Replace tkinter folder picker with PowerShell

__init__.py

@@ -20,6 +20,8 @@ WEB_DIRECTORY = "./js"
 
 try:
     import os
+    import subprocess
+    import sys
     from aiohttp import web
     from server import PromptServer
 
@@ -31,18 +33,50 @@ try:
         return web.FileResponse(path)
 
     @PromptServer.instance.routes.get("/dumas/api/pick_directory")
-    async def dumas_pick_directory(_request):
+    async def dumas_pick_directory(request):
         try:
-            import tkinter as tk
-            from tkinter import filedialog
+            if sys.platform != "win32":
+                return web.json_response({"ok": False, "message": "Native folder picker is only available on Windows right now."})
 
-            root = tk.Tk()
-            root.withdraw()
-            root.attributes("-topmost", True)
-            selected = filedialog.askdirectory(
-                initialdir=str(_request.query.get("path", "") or "") or None
+            start_path = str(request.query.get("path", "") or "").strip()
+            if start_path and not os.path.isdir(start_path):
+                start_path = ""
+
+            ps_lines = [
+                "Add-Type -AssemblyName System.Windows.Forms",
+                "$dialog = New-Object System.Windows.Forms.FolderBrowserDialog",
+                '$dialog.Description = "Select a folder"',
+                "$dialog.ShowNewFolderButton = $true",
+            ]
+            if start_path:
+                escaped = start_path.replace("'", "''")
+                ps_lines.append(f"$dialog.SelectedPath = '{escaped}'")
+            ps_lines.extend(
+                [
+                    "if ($dialog.ShowDialog() -eq [System.Windows.Forms.DialogResult]::OK) {",
+                    "  [Console]::OutputEncoding = [System.Text.Encoding]::UTF8",
+                    "  Write-Output $dialog.SelectedPath",
+                    "}",
+                ]
             )
-            root.destroy()
+            command = "; ".join(ps_lines)
+            result = subprocess.run(
+                [
+                    "powershell",
+                    "-NoProfile",
+                    "-STA",
+                    "-ExecutionPolicy",
+                    "Bypass",
+                    "-Command",
+                    command,
+                ],
+                capture_output=True,
+                text=True,
+                encoding="utf-8",
+                errors="replace",
+                check=False,
+            )
+            selected = (result.stdout or "").strip()
             if not selected:
                 return web.json_response({"ok": False, "cancelled": True})
             return web.json_response({"ok": True, "path": selected})