using UnityEngine;
using UnityEngine.UI;

namespace GameFramework
{
    /// <summary>
    /// 主菜单 UI 控制器。
    /// 绑定三个按钮：开始游戏（异步加载）、设置（占位面板）、退出游戏。
    /// </summary>
    public class MainMenuUIController : MonoBehaviour
    {
        [Header("Buttons")]
        [SerializeField] Button startButton;
        [SerializeField] Button settingsButton;
        [SerializeField] Button quitButton;

        [Header("Settings Panel (placeholder)")]
        [SerializeField] GameObject settingsPanel;
        [SerializeField] Button settingsBackButton;

        void Start()
        {
            // 绑定按钮事件
            if (startButton != null)
                startButton.onClick.AddListener(OnStartClick);

            if (settingsButton != null)
                settingsButton.onClick.AddListener(OnSettingsClick);

            if (quitButton != null)
                quitButton.onClick.AddListener(OnQuitClick);

            if (settingsBackButton != null)
                settingsBackButton.onClick.AddListener(OnSettingsBackClick);

            // 确保设置面板初始关闭
            if (settingsPanel != null)
                settingsPanel.SetActive(false);
        }

        void OnStartClick()
        {
            if (SceneLoader.Instance != null)
                SceneLoader.Instance.LoadGameplayScene();
        }

        void OnSettingsClick()
        {
            if (settingsPanel != null)
                settingsPanel.SetActive(true);
        }

        void OnSettingsBackClick()
        {
            if (settingsPanel != null)
                settingsPanel.SetActive(false);
        }

        void OnQuitClick()
        {
#if UNITY_EDITOR
            UnityEditor.EditorApplication.isPlaying = false;
#else
            Application.Quit();
#endif
        }
    }
}