using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using TMPro;
using BaseGames.Core.Events;

namespace BaseGames.UI.Menus
{
    public class DeathScreenController : MonoBehaviour
    {
        [SerializeField] private TMP_Text _deathMessage;
        [SerializeField] private Button   _btnRespawn;

        [Header("时序")]
        [Tooltip("死亡画面出现前的缓冲延迟（秒）。调整此值可匹配死亡动画时长。")]
        [SerializeField] private float _showDelay = 1.5f;
        [Tooltip("死亡文字默认显示内容，会被本地化系统覆盖（如果已配置）。")]
        [SerializeField] private string _defaultDeathText = "決死";

        [Header("Event Channels")]
        [SerializeField] private VoidEventChannelSO _onDeathScreenConfirmed;

        private WaitForSecondsRealtime _showDelayWait;

        private void Awake()
        {
            _showDelayWait = new WaitForSecondsRealtime(_showDelay);
        }

        private void OnEnable()
        {
            // 死亡界面由 UIManager 在游戏状态变为 Dead 时通过 SetActive(true) 激活。
            // _onPlayerDied 事件此时已经触发完毕，订阅它不会收到回调。
            // 直接在 OnEnable 启动延迟显示协程即可保证 1.5s 缓冲。
            StartCoroutine(ShowAfterDelay(_showDelay));
        }

        private void OnDisable()
        {
            StopAllCoroutines();
        }

        private IEnumerator ShowAfterDelay(float delay)
        {
            yield return _showDelayWait;
            Show();
        }

        private void Show()
        {
            if (_deathMessage != null) _deathMessage.text = _defaultDeathText;

            if (_btnRespawn != null)
            {
                _btnRespawn.onClick.RemoveAllListeners();
                _btnRespawn.onClick.AddListener(Confirm);
            }

            // 手柄导航：死亡界面显示后将焦点置于复活按钮
            EventSystem.current?.SetSelectedGameObject(_btnRespawn?.gameObject);
        }

        private void Confirm()
        {
            gameObject.SetActive(false);
            _onDeathScreenConfirmed?.Raise();
        }
    }
}