Add VK callback auth support and admin demotion

auth_webview.py

@@ -1,6 +1,5 @@
 import os
 import sys
-import time
 import json
 import threading
 from urllib.parse import urlparse, parse_qs, unquote
@@ -8,6 +7,13 @@ from urllib.parse import urlparse, parse_qs, unquote
 import webview
 
 
+AUTH_USER_AGENT = (
+    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
+    "AppleWebKit/537.36 (KHTML, like Gecko) "
+    "Chrome/120.0.0.0 Safari/537.36 Edg/120.0.0.0"
+)
+
+
 def extract_token(url_string):
     token = None
     expires_in = 3600
@@ -50,28 +56,59 @@ def extract_token(url_string):
 
 
 def main_auth(auth_url, output_path):
+    stop_polling = threading.Event()
+    polling_started = threading.Event()
+
     def poll_url():
-        try:
-            url = window.get_current_url()
-        except Exception:
-            url = None
-        if url:
+        while not stop_polling.wait(0.75):
+            try:
+                url = window.get_current_url()
+            except Exception:
+                continue
+            if not url:
+                continue
+
             token, expires_in = extract_token(url)
-            if token:
-                data = {"token": token, "expires_in": expires_in}
-                with open(output_path, "w", encoding="utf-8") as f:
-                    json.dump(data, f)
+            if not token:
+                continue
+
+            stop_polling.set()
+            data = {"token": token, "expires_in": expires_in}
+            with open(output_path, "w", encoding="utf-8") as f:
+                json.dump(data, f)
+            try:
                 window.destroy()
-                return
-        threading.Timer(0.5, poll_url).start()
+            except Exception:
+                pass
+            return
+
+    def start_polling():
+        if polling_started.is_set():
+            return
+        polling_started.set()
+        thread = threading.Thread(target=poll_url, name="vk-auth-url-poller", daemon=True)
+        thread.start()
 
     def on_loaded():
-        threading.Timer(0.5, poll_url).start()
+        start_polling()
+
+    def on_closed():
+        stop_polling.set()
 
     window = webview.create_window("VK Авторизация", auth_url)
     window.events.loaded += on_loaded
-    storage_path = os.path.join(os.path.dirname(output_path), "webview_profile")
-    webview.start(private_mode=False, storage_path=storage_path)
+    try:
+        window.events.closed += on_closed
+    except Exception:
+        pass
+    webview.start(
+        start_polling,
+        gui="edgechromium" if os.name == "nt" else None,
+        private_mode=True,
+        storage_path=None,
+        user_agent=AUTH_USER_AGENT,
+    )
+    stop_polling.set()
 
 
 def main():