using UnityEngine;
using UnityEngine.UI;
using BaseGames.Core;
using BaseGames.Core.Assets;
using BaseGames.Core.Events;

namespace BaseGames.UI
{
    /// <summary>
    /// 暂停菜单控制器（架构 10_UIModule §5）。
    /// 挂载在 Canvas_Menu → PauseMenuPanel GameObject 上。
    /// 按钮绑定在 Awake 中完成；由 UIManager 负责面板开关。
    /// </summary>
    public class PauseMenuController : MonoBehaviour
    {
        [SerializeField] private UIManager  _uiManager;
        [SerializeField] private GameObject _settingsRoot;  // SettingsPanel 根 GameObject

        [Header("按钮引用")]
        [SerializeField] private Button _btnResume;
        [SerializeField] private Button _btnSettings;
        [SerializeField] private Button _btnMainMenu;
        [SerializeField] private Button _btnQuit;

        [Header("Event Channels")]
        [SerializeField] private VoidEventChannelSO                _onResumeRequested;
        [SerializeField] private SceneLoadRequestEventChannelSO    _onSceneLoadRequest;

        private void Awake()
        {
            _btnResume.onClick.AddListener(Resume);
            _btnSettings.onClick.AddListener(OpenSettings);
            _btnMainMenu.onClick.AddListener(GoToMainMenu);
            _btnQuit.onClick.AddListener(Application.Quit);
        }

        // ── 按钮回调 ──────────────────────────────────────────────────────────

        private void Resume()
        {
            _onResumeRequested?.Raise();
            _uiManager.CloseTopPanel();
        }

        private void OpenSettings()
        {
            if (_settingsRoot != null)
                _uiManager.OpenPanel(_settingsRoot);
        }

        private void GoToMainMenu()
        {
            _uiManager.CloseTopPanel();
            _onSceneLoadRequest?.Raise(new SceneLoadRequest
            {
                SceneName         = AddressKeys.SceneMainMenu,
                TransitionType    = TransitionType.Scene,
                ShowLoadingScreen = false,
            });
        }
    }
}