using System.Collections;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class MainMenuManager : MonoBehaviour
{
    [Header("패널 참조")]
    public GameObject mainMenuPanel;
    public GameObject settingsPanel;

    [Header("버튼 참조")]
    public Button startButton;
    public Button settingsButton;
    public Button quitButton;
    public Button settingsBackButton;

    [Header("설정 슬라이더")]
    public Slider bgmSlider;
    public Slider sfxSlider;

    [Header("인트로 컨트롤러")]
    public MenuIntroController introController;

    [Header("게임씬 이름")]
    public string gameSceneName = "GameScene";

    public LoadingController 로딩컨트롤러;

    private void Start()
    {
        startButton.onClick.AddListener(OnStartButtonClick);
        settingsButton.onClick.AddListener(OnSettingsButtonClick);
        quitButton.onClick.AddListener(OnQuitButtonClick);
        settingsBackButton.onClick.AddListener(OnSettingsBackButtonClick);

        if (bgmSlider != null)
            bgmSlider.value = PlayerPrefs.GetFloat("BGMVolume", 1f);

        if (sfxSlider != null)
            sfxSlider.value = PlayerPrefs.GetFloat("SFXVolume", 1f);

        ShowMainMenu();
    }

    // ── 게임 시작 ──────────────────────────────
    public void OnStartButtonClick()
    {
        ButtonAnimator.Play(startButton, () =>
            StartCoroutine(로딩컨트롤러.로딩시작()));
    }

    // ── 설정 열기 ──────────────────────────────
    public void OnSettingsButtonClick()
    {
        ButtonAnimator.Play(settingsButton, () => StartCoroutine(OpenSettings()));
    }

    private IEnumerator OpenSettings()
    {
        yield return StartCoroutine(introController.PlayOutro());
        mainMenuPanel.SetActive(false);
        settingsPanel.SetActive(true);
    }

    // ── 설정 닫기 ──────────────────────────────
    public void OnSettingsBackButtonClick()
    {
        PlayerPrefs.Save();
        StartCoroutine(CloseSettings());
    }

    private IEnumerator CloseSettings()
    {
        settingsPanel.SetActive(false);
        mainMenuPanel.SetActive(true);
        yield return null;
        introController.ReplayIntro();
    }

    // ── 게임 종료 ──────────────────────────────
    public void OnQuitButtonClick()
    {
        ButtonAnimator.Play(quitButton, () =>
        {
#if UNITY_EDITOR
            UnityEditor.EditorApplication.isPlaying = false;
#else
            Application.Quit();
#endif
        });
    }

    // ── 유틸 ──────────────────────────────────
    private void ShowMainMenu()
    {
        mainMenuPanel.SetActive(true);
        settingsPanel.SetActive(false);
    }
}