VFSUnity/Assets/Scripts/UI/PageController.cs

using UnityEngine;
using UnityEngine.UI;

public class PageController : MonoBehaviour
{
    [Header("=== 三个主页面 ===")]
    [SerializeField] private GameObject _homePagePanel;
    [SerializeField] private GameObject _modeSelectPanel;
    [SerializeField] private GameObject _fixationPanel;

    [Header("=== 实验页面 ===")]
    [SerializeField] private GameObject _experimentPanel;
    [SerializeField] private Button _btnExperimentBack;

    [Header("=== 实验内 UI（由 UIManager 管理）===")]
    [SerializeField] private UIManager _uiManager;

    [Header("=== 首页控件 ===")]
    [SerializeField] private Button _btnStart;
    [SerializeField] private Button _btnExit;

    [Header("=== 模式选择页控件 ===")]
    [SerializeField] private Button _btnBack;
    [SerializeField] private Button _btnPracticeMode;
    [SerializeField] private Button _btnExamMode;
    [SerializeField] private Text _modeDescText;

    [Header("=== 固定方式选择页控件 ===")]
    [SerializeField] private Button _btnFixationBack;
    [SerializeField] private Button _btnLimbFixation;
    [SerializeField] private Button _btnSplintFixation;

    [Header("=== 模式说明文案 ===")]
    [SerializeField] [TextArea(2, 4)] private string _practiceModeDesc =
        "模拟练习模式：不限时长，可反复练习。系统不评分，帮助您熟悉实验流程和操作步骤。";
    [SerializeField] [TextArea(2, 4)] private string _examModeDesc =
        "考核评估模式：限定时间，完成后系统自动评分，并提供详细反馈报告。";

    [Header("=== 编辑器预览（仅 Editor 模式有效）===")]
    [SerializeField] private EditorPreviewPage _editorPreview = EditorPreviewPage.None;

    public enum Page { Home, ModeSelect, Fixation, Experiment }
    public enum EditorPreviewPage { None, Home, ModeSelect, Fixation, Experiment }

    private Page _currentPage = Page.Home;
    private ExperimentMode _selectedMode = ExperimentMode.Learn;

    private void Start()
    {
        Debug.Log("=== PageController 初始化开始 ===");

        // 背景音乐 AudioSource
        _bgAudioSource = gameObject.AddComponent<AudioSource>();
        _bgAudioSource.loop = true;
        _bgAudioSource.playOnAwake = false;

        // 绑定首页按钮
        if (_btnStart != null) { _btnStart.onClick.AddListener(OnStartClicked); Debug.Log("PageController: _btnStart 绑定成功"); }
        else Debug.LogError("PageController: _btnStart 未赋值！");

        if (_btnExit != null) { _btnExit.onClick.AddListener(OnExitClicked); Debug.Log("PageController: _btnExit 绑定成功"); }
        else Debug.LogError("PageController: _btnExit 未赋值！");

        if (_btnBack != null) { _btnBack.onClick.AddListener(OnModeBackClicked); Debug.Log("PageController: _btnBack 绑定成功"); }
        else Debug.LogError("PageController: _btnBack 未赋值！");

        if (_btnPracticeMode != null) { _btnPracticeMode.onClick.AddListener(() => OnModeSelected(ExperimentMode.Learn)); Debug.Log("PageController: _btnPracticeMode 绑定成功"); }
        else Debug.LogError("PageController: _btnPracticeMode 未赋值！");

        if (_btnExamMode != null) { _btnExamMode.onClick.AddListener(() => OnModeSelected(ExperimentMode.Exam)); Debug.Log("PageController: _btnExamMode 绑定成功"); }
        else Debug.LogError("PageController: _btnExamMode 未赋值！");

        if (_btnFixationBack == null && _fixationPanel != null) { var fb = _fixationPanel.transform.Find("BtnBack"); if (fb != null) { _btnFixationBack = fb.GetComponent<Button>(); Debug.Log("PageController: 自动绑定 FixationPanel/BtnBack"); } }
        if (_btnFixationBack != null) { _btnFixationBack.onClick.AddListener(OnFixationBackClicked); Debug.Log("PageController: _btnFixationBack 绑定成功"); }
        else Debug.LogError("PageController: _btnFixationBack 未找到！");

        if (_btnLimbFixation != null) { _btnLimbFixation.onClick.AddListener(() => OnFixationSelected(FixationMethod.LimbFixation)); Debug.Log("PageController: _btnLimbFixation 绑定成功"); }
        else Debug.LogError("PageController: _btnLimbFixation 未赋值！");

        if (_btnSplintFixation != null) { _btnSplintFixation.onClick.AddListener(() => OnFixationSelected(FixationMethod.SplintFixation)); Debug.Log("PageController: _btnSplintFixation 绑定成功"); }
        else Debug.LogError("PageController: _btnSplintFixation 未赋值！");

        if (_btnExperimentBack == null && _experimentPanel != null) { var eb = _experimentPanel.transform.Find("Navbar/BtnBack"); if (eb != null) { _btnExperimentBack = eb.GetComponent<Button>(); Debug.Log("PageController: 自动绑定 ExperimentPanel/Navbar/BtnBack"); } }
        if (_btnExperimentBack != null) { _btnExperimentBack.onClick.AddListener(OnExperimentBackClicked); Debug.Log("PageController: _btnExperimentBack 绑定成功"); }
        else Debug.LogError("PageController: _btnExperimentBack 未找到！");

        if (_modeDescText != null) { _modeDescText.text = _practiceModeDesc + "\n\n" + _examModeDesc; }

        ShowPage(Page.Home);
        Debug.Log("=== PageController 初始化完成 ===");
    }

#if UNITY_EDITOR
    private void OnValidate()
    {
        if (Application.isPlaying) return;

        UnityEditor.EditorApplication.delayCall += () =>
        {
            if (this == null) return;
            if (Application.isPlaying) return;

            switch (_editorPreview)
            {
                case EditorPreviewPage.None: break;
                case EditorPreviewPage.Home: ShowPageEditMode(Page.Home); break;
                case EditorPreviewPage.ModeSelect: ShowPageEditMode(Page.ModeSelect); break;
                case EditorPreviewPage.Fixation: ShowPageEditMode(Page.Fixation); break;
                case EditorPreviewPage.Experiment: ShowPageEditMode(Page.Experiment); break;
            }

            _editorPreview = EditorPreviewPage.None;
        };
    }

    private void ShowPageEditMode(Page page)
    {
        if (_homePagePanel != null) _homePagePanel.SetActive(page == Page.Home);
        if (_modeSelectPanel != null) _modeSelectPanel.SetActive(page == Page.ModeSelect);
        if (_fixationPanel != null) _fixationPanel.SetActive(page == Page.Fixation);
        if (_experimentPanel != null) _experimentPanel.SetActive(page == Page.Experiment);

        if (_uiManager != null)
            _uiManager.enabled = (page == Page.Experiment);
        if (page == Page.Home) PlayHomeBg();        // 背景音乐: 首页播 homeBg, 选固定方式时停, 实验启动时播 experimentBg
        if (page == Page.Home) PlayHomeBg();
        Debug.Log($"PageController（编辑器预览）: 切换到 [{page}]");
    }
#endif

    #region 页面切换

    private void ShowPage(Page page)
    {
        Debug.Log($"PageController: 页面切换 [{_currentPage}] → [{page}]");
        _currentPage = page;

        if (_homePagePanel != null) _homePagePanel.SetActive(page == Page.Home);
        if (_modeSelectPanel != null) _modeSelectPanel.SetActive(page == Page.ModeSelect);
        if (_fixationPanel != null) _fixationPanel.SetActive(page == Page.Fixation);
        if (_experimentPanel != null) _experimentPanel.SetActive(page == Page.Experiment);

    }

    /// <summary>
    /// 隐藏所有页面，用于播放片头动画时清空 UI
    /// </summary>
    private void HideAllPages()
    {
        Debug.Log("PageController: [HideAllPages] 隐藏所有 UI 面板");
        if (_homePagePanel != null) _homePagePanel.SetActive(false);
        if (_modeSelectPanel != null) _modeSelectPanel.SetActive(false);
        if (_fixationPanel != null) _fixationPanel.SetActive(false);
        if (_experimentPanel != null) _experimentPanel.SetActive(false);

        var tipPanel = GameObject.Find("TipPanel");
        if (tipPanel != null) tipPanel.SetActive(false);

        var dialogue = GameObject.Find("DialogueBubble");
        if (dialogue != null) dialogue.SetActive(false);
    }
    #endregion

    #region 按钮回调

    private void OnStartClicked()
    {
        Debug.Log("PageController: [BtnStart] 点击 -> 切换到 ModeSelect");
        ShowPage(Page.ModeSelect);
    }

    private void OnExitClicked()
    {
        Debug.Log("PageController: [BtnExit] 点击 -> 退出应用");
#if UNITY_EDITOR
        UnityEditor.EditorApplication.isPlaying = false;
#else
        Application.Quit();
#endif
    }

    private void OnModeBackClicked()
    {
        Debug.Log("PageController: [BtnBack(Mode)] 点击 -> 返回 Home");
        ShowPage(Page.Home);
    }

    private void OnModeSelected(ExperimentMode mode)
    {
        Debug.Log($"PageController: [ModeSelected] 点击 -> 模式 [{mode}] -> 切换到 Fixation");
        _selectedMode = mode;

        ShowPage(Page.Fixation);
    }

    private void OnFixationBackClicked()
    {
        Debug.Log("PageController: [BtnFixationBack] 点击 -> 返回 ModeSelect");
        if (_modeDescText != null)
        {
            _modeDescText.text = _practiceModeDesc + "\n\n" + _examModeDesc;
        }

        ShowPage(Page.ModeSelect);
    }

    private void OnExperimentBackClicked()
    {
        Debug.Log("PageController: [BtnExperimentBack] 点击 -> 返回 Fixation");
        ShowPage(Page.Fixation);
    }

    private void OnFixationSelected(FixationMethod method)
    {
        Debug.Log($"PageController: [FixationSelected] 点击 -> 固定方式 [{method}]");
        var gm = GameManager.Instance;
        if (gm == null)
        {
            Debug.LogError("PageController: GameManager.Instance 为空！");
            return;
        }

        gm.CurrentMode = _selectedMode;
        gm.CurrentFixationMethod = method;
        Debug.Log($"PageController: GameManager 已设置 Mode=[{gm.CurrentMode}] Fixation=[{gm.CurrentFixationMethod}]");

        // 隐藏所有UI面板，准备播放片头动画
        StopBgMusic();
        HideAllPages();

        // 找到 OpeningFlowController 播放片头动画
        var openingFlow = FindObjectOfType<OpeningFlowController>();
        if (openingFlow != null)
        {
            Debug.Log("PageController: 开始播放片头动画，ExperimentPanel 将在动画结束后显示");
            openingFlow.PlayOpeningFlow(() =>
            {
                Debug.Log("PageController: 片头动画完成，显示 ExperimentPanel");
                ActivateExperimentObjects();
                var smW = FindObjectOfType<StepManager>(); if (smW != null) smW.InitWomanSteps();                ShowPage(Page.Experiment);

                var stepManager = FindObjectOfType<StepManager>();
                if (stepManager != null)
                {
                }
                else
                {
                    Debug.LogWarning("PageController: 未找到 StepManager，实验步骤不会自动初始化");
                }
            });
        }
        else
        {
            Debug.LogWarning("PageController: 未找到 OpeningFlowController，直接显示 ExperimentPanel");
            ShowPage(Page.Experiment);

            var stepManager = FindObjectOfType<StepManager>();
            if (stepManager != null)
            {
            }
        }
    }

    /// <summary>
    /// 激活实验场景物件（medicalBox等），在动画完成后调用
    /// </summary>
    private void ActivateExperimentObjects()
    {
        Debug.Log("PageController: [ActivateExperimentObjects] 显示实验物件");

        PlayExperimentBg();

        var allObjects = FindObjectsOfType<GameObject>(true);
        foreach (var go in allObjects)
        {
            if (go.name == "medicalBox") { go.SetActive(true); Debug.Log("PageController: medicalBox 已显示"); break; }
        }

        var touch = GameObject.Find("touchArray");
        if (touch != null && touch.transform.childCount > 0) { touch.transform.GetChild(0).gameObject.SetActive(true); Debug.Log("PageController: touchArray/point1 已显示"); }

        var tipPanel = GameObject.Find("TipPanel");
        if (tipPanel != null) tipPanel.SetActive(true);
        var dialogue = GameObject.Find("DialogueBubble");
        if (dialogue != null) dialogue.SetActive(true);
    }

    public void ReturnToHome()
    {
        Debug.Log("PageController: [ReturnToHome] 返回首页并重置场景");

        var man = GameObject.Find("man");
        if (man != null) man.SetActive(true);
        var man2 = GameObject.Find("man2");
        if (man2 != null) man2.SetActive(true);

        var woman = GameObject.Find("woman");
        if (woman != null) woman.SetActive(false);
        var manInjury = GameObject.Find("manInjury");
        if (manInjury != null) manInjury.SetActive(false);
        var medicalBox = GameObject.Find("medicalBox");
        if (medicalBox != null) medicalBox.SetActive(false);

        // 用名字找主摄像机（Camera.main 在禁用后返回 null）
        var mainGo = GameObject.Find("Main Camera");
        if (mainGo != null) { var c = mainGo.GetComponent<Camera>(); if (c != null) c.enabled = true; }
        var cam2Go = GameObject.Find("camera2");
        if (cam2Go != null) { var c = cam2Go.GetComponent<Camera>(); if (c != null) c.enabled = false; }

        var manAnim = man != null ? man.GetComponent<Animator>() : null;
        if (manAnim != null) { manAnim.SetBool("IsStart", false); manAnim.SetBool("IsFull", false); manAnim.Play("manIdle", 0, 0f); }

        ShowPage(Page.Home);
    }

    #endregion
    [Header("=== 音频 ===")]
    [SerializeField] private AudioClip _homeBgClip;
    [SerializeField] private AudioClip _experimentBgClip;
    [SerializeField] private AudioClip[] _womanClips;
    private AudioSource _bgAudioSource;
    private Coroutine _fadeCoroutine;
    private Coroutine _fadeCoroutine;

    private void PlayHomeBg()
    {
        if (_homeBgClip == null) return;
        if (_bgAudioSource == null) { _bgAudioSource = gameObject.AddComponent<AudioSource>(); _bgAudioSource.loop = true; _bgAudioSource.playOnAwake = false; }
        _bgAudioSource.clip = _homeBgClip;
        _bgAudioSource.Play();
        _fadeCoroutine = StartCoroutine(FadeInBg());
        Debug.Log("PageController: 播放首页背景音乐");
    }

    private void StopBgMusic()
    {
        if (_fadeCoroutine != null) { StopCoroutine(_fadeCoroutine); _fadeCoroutine = null; }
        if (_bgAudioSource != null)
        {
            _bgAudioSource.Stop();
            Debug.Log("PageController: 停止背景音乐");
        }
    }

    private void PlayExperimentBg()
    {
        StopBgMusic();
        if (_experimentBgClip == null) return;
        if (_bgAudioSource == null) { _bgAudioSource = gameObject.AddComponent<AudioSource>(); _bgAudioSource.loop = true; _bgAudioSource.playOnAwake = false; }
        _bgAudioSource.clip = _experimentBgClip;
        _bgAudioSource.Play();
        _fadeCoroutine = StartCoroutine(FadeInBg());
        Debug.Log("PageController: 播放实验背景音乐");
    }

    private System.Collections.IEnumerator FadeInBg(float duration = 1.5f)
    {
        if (_bgAudioSource == null) yield break;
        float targetVolume = _bgAudioSource.volume > 0.01f ? _bgAudioSource.volume : 0.5f;
        _bgAudioSource.volume = 0f;
        float elapsed = 0f;
        while (elapsed < duration)
        {
            elapsed += Time.deltaTime;
            if (_bgAudioSource != null) _bgAudioSource.volume = Mathf.Lerp(0f, targetVolume, elapsed / duration);
            yield return null;
        }
        if (_bgAudioSource != null) _bgAudioSource.volume = targetVolume;
    }
}