using UnityEngine;
using UnityEngine.UIElements;
using PrimeTween;
using System.Threading.Tasks;
using DG.Tweening;
using Tween = PrimeTween.Tween;
using Ease = PrimeTween.Ease;

namespace Baba_yaga.UI
{
    [UnityEngine.Scripting.APIUpdating.MovedFrom(true, sourceNamespace: "Hallucinate.UI", sourceAssembly: "Opsive.UltimateCharacterController")]
    public class LoginController : BaseUIController
    {
        private TextField _nameInput;
        private Label _errorLabel;
        private Button _confirmBtn;

        public override void Initialize(VisualElement uxmlRoot, UIManager manager)
        {
            base.Initialize(uxmlRoot, manager);

            _nameInput = root.Q<TextField>("UsernameInput");
            _errorLabel = root.Q<Label>("ErrorMsg");
            _confirmBtn = root.Q<Button>("ConfirmBtn");

            /*
            if (_confirmBtn != null)
                _confirmBtn.clicked += OnConfirmClicked;
                */
            
            // Đăng ký Localization
            if (LocalizationManager.Instance != null)
            {
                LocalizationManager.Instance.OnLanguageChanged += ApplyLocalization;
            }
            ApplyLocalization();
        }

        private void ApplyLocalization()
        {
            if (LocalizationManager.Instance == null) return;

            var title = root.Q<Label>(className: "text-heading");
            if (title != null) title.text = LocalizationManager.Instance.GetLocalizedString("LOGIN_TITLE");

            if (_nameInput != null) _nameInput.label = LocalizationManager.Instance.GetLocalizedString("LOGIN_USER");
            if (_confirmBtn != null) _confirmBtn.text = LocalizationManager.Instance.GetLocalizedString("LOGIN_BTN");
            
            var guestBtn = root.Q<Button>("GuestBtn");
            if (guestBtn != null) guestBtn.text = LocalizationManager.Instance.GetLocalizedString("LOGIN_GUEST");
            
        }

        /*private async void OnConfirmClicked()
        {
            string username = _nameInput.value.Trim();

            if (string.IsNullOrEmpty(username))
            {
                ShowError("Name cannot be empty!");
                return;
            }

            _confirmBtn.SetEnabled(false);
            _confirmBtn.text = "CHECKING...";

            // 1. Kiểm tra trùng tên trên Firebase
            bool isTaken = await FirebaseService.IsUsernameTaken(username);

            if (isTaken)
            {
                ShowError("This name is already taken!");
                _confirmBtn.SetEnabled(true);
                _confirmBtn.text = "CONFIRM";
            }
            else
            {
                // // 2. Đăng ký user mới
                // bool success = await FirebaseService.RegisterUser(username);
                // if (success)
                // {
                //     // 3. Lưu lại và đóng popup
                //     PlayerPrefs.SetString("Username", username);
                //     PlayerPrefs.Save();
                //     Debug.Log($"[Login] Registered as {username}");
                //     
                //     // Thông báo cho UIManager biết đã login xong
                //     uiManager.OnLoginSuccess();
                //     await PlayTransitionOut();
                // }
                // else
                // {
                //     ShowError("Connection error!");
                //     _confirmBtn.SetEnabled(true);
                //     _confirmBtn.text = "CONFIRM";
                // }
            }
        }*/

        /*private void ShowError(string msg)
        {
            if (_errorLabel == null) return;
            _errorLabel.text = msg;
            _errorLabel.style.display = DisplayStyle.Flex;
        }*/

        /*public override async Task PlayTransitionIn()
        {
            // Login hiện ra như một overlay trung tâm
            if (root != null)
            {
                root.style.translate = new StyleTranslate(new Translate(0, 0));
                root.style.opacity = 0;
            }
            Show();
            await Tween.Custom(0f, 1f, duration: 0.5f, onValueChange: val => root.style.opacity = val);
        }*/
    }
}