Let 3x-ui assign inbound and share link on create.

Stop requiring inbound selection in the site UI; send the create request to the chosen panel and use the link it returns.

Co-authored-by: Cursor <cursoragent@cursor.com>

app.py

@@ -3909,6 +3909,7 @@ async def api_add_user_connection(request: Request, user_id: str, req: AddUserCo
                 created = await xui_create_vless_config(
                     data.get('settings', {}),
                     name=req.name or user.get('username') or 'user',
+                    # Optional hint only — panel assigns inbound + share link
                     inbound_id=req.xui_inbound_id or panel.get('default_inbound_id') or None,
                     panel_id=panel_id,
                 )
@@ -4490,8 +4491,6 @@ async def _create_config_for_protocol(
     """Create VPN client; returns {client_id, config, subscription_url, protocol, server_id}."""
     protocol = protocol or 'xui'
     if protocol_base(protocol) == 'xui':
-        if not xui_inbound_id:
-            raise RuntimeError('Select a VLESS inbound for this invite link')
         from managers.xui_api import xui_create_vless_config
         from managers.xui_servers import get_xui_server, ensure_xui_servers
         ensure_xui_servers(data.get('settings') or {})
@@ -4499,11 +4498,13 @@ async def _create_config_for_protocol(
         if not panel:
             raise RuntimeError('Add a 3x-ui server in Settings first')
         panel_id = panel.get('id') or ''
+        # Prefer invite/default inbound; otherwise 3x-ui picks first VLESS on that panel
+        inbound = xui_inbound_id or panel.get('default_inbound_id') or None
         expiry_ms = _expiry_ms_from_duration_days(duration_days)
         created = await xui_create_vless_config(
             data.get('settings', {}),
             name=name,
-            inbound_id=xui_inbound_id,
+            inbound_id=inbound,
             expiry_time=expiry_ms,
             panel_id=panel_id,
         )
@@ -4515,6 +4516,7 @@ async def _create_config_for_protocol(
             'protocol': 'xui',
             'server_id': 0,
             'xui_panel_id': panel_id,
+            'xui_inbound_id': int(created.get('inbound_id') or 0),
             'expires_at': (
                 datetime.fromtimestamp(expiry_ms / 1000).isoformat()
                 if expiry_ms > 0 else None
@@ -4609,10 +4611,9 @@ async def api_create_invite(request: Request, req: InviteCreateRequest):
         if not panel:
             return JSONResponse({'error': 'Add a 3x-ui server in Settings first'}, status_code=400)
         panel_id = panel.get('id') or ''
+        # Inbound is optional — 3x-ui panel assigns it (or uses server default) on redeem
         if not inbound_id:
             inbound_id = int(panel.get('default_inbound_id') or 0)
-        if not inbound_id:
-            return JSONResponse({'error': 'Select a VLESS inbound'}, status_code=400)
     link = {
         'id': str(uuid.uuid4()),
         'name': (req.name or 'Invite').strip() or 'Invite',
@@ -4677,9 +4678,14 @@ async def api_update_invite(request: Request, invite_id: str, req: InviteUpdateR
         link['enabled'] = bool(req.enabled)
     if req.reset_used:
         link['used_count'] = 0
-    # Validate inbound for xui
-    if protocol_base(link.get('protocol') or 'xui') == 'xui' and not int(link.get('xui_inbound_id') or 0):
-        return JSONResponse({'error': 'Select a VLESS inbound'}, status_code=400)
+    if protocol_base(link.get('protocol') or 'xui') == 'xui':
+        from managers.xui_servers import get_xui_server, ensure_xui_servers
+        ensure_xui_servers(data.setdefault('settings', {}))
+        panel = get_xui_server(data.get('settings') or {}, link.get('xui_panel_id') or None)
+        if not panel:
+            return JSONResponse({'error': 'Add a 3x-ui server in Settings first'}, status_code=400)
+        if not link.get('xui_panel_id'):
+            link['xui_panel_id'] = panel.get('id') or ''
     save_data(data)
     return {'status': 'success', 'invite': _invite_public_view(link)}