BABA_YAGA/Assets/Scripts/UI/LobbyController.cs

using UnityEngine;
using UnityEngine.UIElements;
using System.Collections.Generic;
using System.Threading.Tasks;
using Fusion;

namespace Hallucinate.UI
{
    public class LobbyController : BaseUIController
    {
        private VisualTreeAsset _roomItemTemplate;
        private _BasicSpawner _spawner;

        // Containers
        private VisualElement _joinContainer, _createContainer, _loungeContainer, _passOverlay;
        
        // Create Room Fields
        private TextField _roomIDInput, _roomNameInput, _roomPassInput;
        private Toggle _passToggle;
        
        // Join Room Fields
        private ScrollView _roomList;
        private TextField _joinPassInput;
        private Label _joinPassError;
        private SessionInfo _selectedSession;

        public override void Initialize(VisualElement uxmlRoot, UIManager manager)
        {
            base.Initialize(uxmlRoot, manager);
            _spawner = Object.FindFirstObjectByType<_BasicSpawner>();

            // Query Elements
            _joinContainer = root.Q<VisualElement>("JoinContainer");
            _createContainer = root.Q<VisualElement>("CreateContainer");
            _loungeContainer = root.Q<VisualElement>("LoungeContainer");
            _passOverlay = root.Q<VisualElement>("PasswordOverlay");

            _roomIDInput = root.Q<TextField>("RoomIDInput");
            _roomNameInput = root.Q<TextField>("RoomNameInput");
            _roomPassInput = root.Q<TextField>("RoomPassInput");
            _passToggle = root.Q<Toggle>("PassToggle");
            _roomList = root.Q<ScrollView>("RoomList");
            
            _joinPassInput = root.Q<TextField>("JoinPassInput");
            _joinPassError = root.Q<Label>("JoinPassError");

            // Event Bindings
            root.Q<Button>("GoToCreateBtn").clicked += ShowCreate;
            root.Q<Button>("CancelCreateBtn").clicked += ShowJoin;
            root.Q<Button>("BackToMenuBtn").clicked += () => uiManager.Pop();
            root.Q<Button>("ConfirmCreateBtn").clicked += OnCreateRoomClicked;
            root.Q<Button>("ConfirmJoinBtn").clicked += OnConfirmPasswordClicked;
            root.Q<Button>("ClosePassBtn").clicked += () => _passOverlay.style.display = DisplayStyle.None;

            _passToggle.RegisterValueChangedCallback(evt => 
                _roomPassInput.style.display = evt.newValue ? DisplayStyle.Flex : DisplayStyle.None);

            // Đăng ký sự kiện từ Spawner
            if (_spawner != null)
            {
                _spawner.OnSessionListUpdatedEvent += UpdateRoomList;
                _spawner.OnJoinFailedEvent += () => _joinPassError.style.display = DisplayStyle.Flex;
            }
        }

        public void SetRoomTemplate(VisualTreeAsset template) => _roomItemTemplate = template;

        public void ShowJoin()
        {
            _joinContainer.style.display = DisplayStyle.Flex;
            _createContainer.style.display = DisplayStyle.None;
            _loungeContainer.style.display = DisplayStyle.None;
            _spawner?.StartLobby();
        }

        public void ShowCreate()
        {
            _joinContainer.style.display = DisplayStyle.None;
            _createContainer.style.display = DisplayStyle.Flex;
        }

        private async void OnCreateRoomClicked()
        {
            string id = _roomIDInput.value.Trim();
            string name = string.IsNullOrEmpty(_roomNameInput.value) ? id : _roomNameInput.value;
            string pass = _passToggle.value ? _roomPassInput.value : null;

            if (string.IsNullOrEmpty(id)) return;

            await _spawner.StartHost(id, pass);
            // Logic chuyển sang Lounge sẽ được xử lý qua sự kiện OnPlayerJoined trong Spawner
        }

        private void UpdateRoomList(List<SessionInfo> sessions)
        {
            _roomList.Clear();
            foreach (var session in sessions)
            {
                var item = _roomItemTemplate.Instantiate();
                item.Q<Label>("RoomName").text = session.Name;
                item.Q<Label>("PlayerCount").text = $"{session.PlayerCount}/{session.MaxPlayers}";
                
                bool needsPass = session.Properties.ContainsKey("pw"); // Giả sử dùng metadata
                item.Q<Label>("LockIcon").style.display = needsPass ? DisplayStyle.Flex : DisplayStyle.None;

                var joinBtn = item.Q<Button>("JoinBtn");
                joinBtn.clicked += () => OnRoomItemClicked(session);
                
                _roomList.Add(item);
            }
        }

        private void OnRoomItemClicked(SessionInfo session)
        {
            _selectedSession = session;
            // Fusion dùng Password trong StartGameArgs, nên ta hiện popup nhập trước
            _passOverlay.style.display = DisplayStyle.Flex;
            _joinPassError.style.display = DisplayStyle.None;
            _joinPassInput.value = "";
        }

        private async void OnConfirmPasswordClicked()
        {
            if (_selectedSession == null) return;
            string pass = _joinPassInput.value;
            await _spawner.StartClient(_selectedSession.Name, pass);
        }
    }
}