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 int _lastReturnHomeFrame = -1;

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

        // 一开始就隐藏鞋子，以免在主页或开场动画时穿帮
        HideShose();
        var splintFlow = EnsureSplintPracticeFlow();
        if (splintFlow != null) splintFlow.StopPractice();
        var initialExamFlow = EnsureExamFlow();
        if (initialExamFlow != null) initialExamFlow.StopExam();

        // 关掉多余AudioListener（只留Main Camera的）
        var cam2 = GameObject.Find("camera2"); if (cam2 != null) { var al = cam2.GetComponent<AudioListener>(); if (al != null) al.enabled = false; }
        var cam3 = GameObject.Find("camera3"); if (cam3 != null) { var al = cam3.GetComponent<AudioListener>(); if (al != null) al.enabled = false; }

        AutoAssignButtonsByName();

        // 绑定首页按钮
        if (_btnStart != null) { _btnStart.onClick.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _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.RemoveAllListeners(); _btnExperimentBack.onClick.AddListener(OnExperimentBackClicked); Debug.Log("PageController: _btnExperimentBack 绑定成功"); }
        else Debug.LogError("PageController: _btnExperimentBack 未找到！");

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

    private void AutoAssignButtonsByName()
    {
        _btnStart = FindChildButton(_homePagePanel, "BtnStart", _btnStart);
        _btnExit = FindChildButton(_homePagePanel, "BtnExit", _btnExit);
        _btnBack = FindChildButton(_modeSelectPanel, "BtnBack", _btnBack);
        _btnPracticeMode = FindChildButton(_modeSelectPanel, "BtnPracticeMode", _btnPracticeMode);
        _btnExamMode = FindChildButton(_modeSelectPanel, "BtnExamMode", _btnExamMode);
        _btnFixationBack = FindChildButton(_fixationPanel, "BtnBack", _btnFixationBack);
        _btnLimbFixation = FindChildButton(_fixationPanel, "BtnLimbFixation", _btnLimbFixation);
        _btnSplintFixation = FindChildButton(_fixationPanel, "BtnSplintFixation", _btnSplintFixation);
    }

    private Button FindChildButton(GameObject parent, string buttonName, Button fallback)
    {
        if (parent == null) return fallback;

        var buttons = parent.GetComponentsInChildren<Button>(true);
        foreach (var button in buttons)
        {
            if (button != null && button.name == buttonName)
                return button;
        }

        return fallback;
    }

    private void Update()
    {
#if UNITY_EDITOR
        if (!Application.isPlaying)
        {
            if (_editorPreview != EditorPreviewPage.None)
            {
                Page targetPage = (Page)((int)_editorPreview - 1);
                ShowPage(targetPage);
            }
        }
#endif
    }

    private void ShowPage(Page 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);

        if (page == Page.ModeSelect && _modeDescText != null)
            _modeDescText.text = "";

        var audioManager = FindObjectOfType<AudioManager>();
        if (audioManager != null)
        {
            if (page == Page.Experiment) audioManager.StopBgMusic();
            else audioManager.PlayHomeBg();
        }
        
        Debug.Log($"PageController: 页面切换 -> [{page}]");
    }

    #region 按钮回调

    private void OnStartClicked()
    {
        ShowPage(Page.ModeSelect);
    }

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

    private void OnModeBackClicked()
    {
        ShowPage(Page.Home);
    }

    private void OnModeSelected(ExperimentMode mode)
    {
        _selectedMode = mode;
        if (_modeDescText != null)
            _modeDescText.text = (mode == ExperimentMode.Learn) ? _practiceModeDesc : _examModeDesc;

        GameManager.Instance.CurrentMode = mode;
        GameManager.Instance.CurrentExperimentType = ExperimentType.FractureFixation;

        if (mode == ExperimentMode.Learn)
        {
            var examFlow = FindObjectOfType<ExamFlowManager>();
            if (examFlow != null) examFlow.StopExam();
        }

        ShowPage(Page.Fixation);
    }

    private void OnFixationBackClicked()
    {
        ShowPage(Page.ModeSelect);
    }

    private void OnFixationSelected(FixationMethod method)
    {
        GameManager.Instance.CurrentFixationMethod = method;

        var openingFlow = FindObjectOfType<OpeningFlowController>();
        if (openingFlow != null)
        {
            ShowPage(Page.Experiment);
            openingFlow.PlayOpeningFlow(() => 
            {
                if (_uiManager != null)
                {
                    _uiManager.gameObject.SetActive(true);
                    _uiManager.HideTip();
                }

                var stepManager = FindObjectOfType<StepManager>();
                if (stepManager != null)
                {
                    stepManager.InitializeFromGameManager();
                }
                PrepareInitialInteractionObjects();
                StartCoroutine(StartInitialVoiceAndCameraRoutine());
            });
        }
        else
        {
            ShowPage(Page.Experiment);
            if (_uiManager != null)
            {
                _uiManager.gameObject.SetActive(true);
                _uiManager.HideTip();
            }

            var stepManager = FindObjectOfType<StepManager>();
            if (stepManager != null) stepManager.InitializeFromGameManager();
            PrepareInitialInteractionObjects();
            StartCoroutine(StartInitialVoiceAndCameraRoutine());
        }
    }

    private void StartExamFlowIfNeeded()
    {
        if (GameManager.Instance == null) return;
        if (GameManager.Instance.CurrentMode != ExperimentMode.Exam) return;

        var examFlow = EnsureExamFlow();
        if (examFlow != null) examFlow.BeginExam();
    }

    private void OnExperimentBackClicked()
    {
        ReturnToHome();
    }

    public void RestartExperimentWithMode(ExperimentMode mode)
    {
        FixationMethod fixation = GameManager.Instance != null
            ? GameManager.Instance.CurrentFixationMethod
            : FixationMethod.LimbFixation;

        Debug.Log($"PageController: 切换到 {mode}，并从开场动画重新开始");
        ReturnToHome();
        StartCoroutine(RestartExperimentAfterReset(mode, fixation));
    }

    private System.Collections.IEnumerator RestartExperimentAfterReset(ExperimentMode mode, FixationMethod fixation)
    {
        yield return null;

        if (GameManager.Instance != null)
        {
            GameManager.Instance.CurrentMode = mode;
            GameManager.Instance.CurrentExperimentType = ExperimentType.FractureFixation;
            GameManager.Instance.CurrentFixationMethod = fixation;
        }

        OnFixationSelected(fixation);
    }

    public void ReturnToHome()
    {
        if (_lastReturnHomeFrame == Time.frameCount)
        {
            Debug.Log("PageController: 返回首页已在本帧执行，跳过重复调用");
            return;
        }

        _lastReturnHomeFrame = Time.frameCount;
        Debug.Log("PageController: 返回首页，开始完整复位流程");

        StopAllCoroutines();
        ActionHistory.Clear();

        var splintFlow = EnsureSplintPracticeFlow();
        if (splintFlow != null) splintFlow.StopPractice();
        var examFlow = EnsureExamFlow();
        if (examFlow != null) examFlow.StopExam();

        if (_uiManager != null)
        {
            _uiManager.HideVideo();
            _uiManager.HideEndPanel();
        }

        HideCanvasPanel("VideoPanel");
        HideCanvasPanel("EndPanel");
        HideCanvasPanel("DialogueBubble");
        HideCanvasPanel("GradeResult");
        HideCanvasPanel("TipPanel");
        HideCanvasPanel("DetailPanel");

        // --- 核心修复：退出时彻底清理并隐藏所有交互物体 ---
        foreach (var handler in GetSceneObjectsOfType<PingClickHandler>())
        {
            handler.ResetState(false);
            handler.ForceHideOutline();
            handler.gameObject.SetActive(false);
            Debug.Log($"PageController: 已隐藏 Ping {handler.name}");
        }

        foreach (var handler in GetSceneObjectsOfType<ChanraoTuibuHandler>())
        {
            handler.ResetState(false);
            handler.ForceHideOutline();
            handler.gameObject.SetActive(false);
            Debug.Log($"PageController: 已隐藏 ChanraoTuibu {handler.name}");
        }

        HideSceneObjectsByNamePrefix("chanrao");
        
        // 找到 Shose 重置并彻底隐藏
        var shose = FindSceneObject("Shose");
        if (shose != null)
        {
            var h = shose.GetComponent<ShoseClickHandler>();
            if (h != null)
            {
                h.ResetState(false);
                h.ForceHideOutline();
            }
            
            // 关键：返回主页时，必须禁用点击组件，并隐藏物体
            if (h != null) h.enabled = false;
            shose.SetActive(false);
            Debug.Log("PageController: 已隐藏 Shose");
        }

        // 把 touchArray 里的点也关掉
        var touchArray = GameObject.Find("touchArray");
        if (touchArray != null)
        {
            foreach (Transform t in touchArray.transform)
            {
                var point2Handler = t.GetComponent<Point2ClickHandler>();
                if (point2Handler != null) point2Handler.ResetState(false);
                t.gameObject.SetActive(false);
            }
        }

        var woman = GameObject.Find("woman");
        if (woman != null)
        {
            var anim = woman.GetComponent<Animator>();
            if (anim != null)
            {
                anim.SetBool("IsCheck", false);
                anim.SetBool("isCrouch", false);
            }
        }

        var manInjury = GameObject.Find("manInjury");
        if (manInjury != null)
        {
            var anim = manInjury.GetComponent<Animator>();
            if (anim != null) anim.SetBool("CheckFoot", false);
        }

        var audioManager = FindObjectOfType<AudioManager>();
        if (audioManager != null)
        {
            audioManager.StopVoice();
            audioManager.StopSfx();
            audioManager.ResetCamerasToHome();
        }
        // ------------------------------------------------

        ShowPage(Page.Home);
        Debug.Log("PageController: 返回首页复位完成");
    }

    private void HideCanvasPanel(string panelName)
    {
        var panel = FindSceneObject(panelName);
        if (panel != null) panel.SetActive(false);
    }

    private GameObject FindSceneObject(string objectName)
    {
        var found = GameObject.Find(objectName);
        if (found != null) return found;

        foreach (var t in Resources.FindObjectsOfTypeAll<Transform>())
        {
            if (t == null || !t.gameObject.scene.IsValid()) continue;
            if (t.name == objectName) return t.gameObject;
        }

        return null;
    }

    private T[] GetSceneObjectsOfType<T>() where T : Component
    {
        var all = Resources.FindObjectsOfTypeAll<T>();
        var list = new System.Collections.Generic.List<T>();
        foreach (var item in all)
        {
            if (item == null || !item.gameObject.scene.IsValid()) continue;
            list.Add(item);
        }
        return list.ToArray();
    }

    private void HideSceneObjectsByNamePrefix(string prefix)
    {
        foreach (var t in Resources.FindObjectsOfTypeAll<Transform>())
        {
            if (t == null || !t.gameObject.scene.IsValid()) continue;
            if (!t.name.StartsWith(prefix, System.StringComparison.OrdinalIgnoreCase)) continue;
            t.gameObject.SetActive(false);
            Debug.Log($"PageController: 已隐藏残留对象 {t.name}");
        }
    }

    private System.Collections.IEnumerator StartInitialVoiceAndCameraRoutine()
    {
        float waitTime = 1f; // 默认等1秒
        var am = FindObjectOfType<AudioManager>();
        if (am != null) am.PlayExperimentBg();

        // 1. 强制播放第一句语音
        if (am != null)
        {
#if UNITY_EDITOR
            var autoClip = UnityEditor.AssetDatabase.LoadAssetAtPath<AudioClip>("Assets/Audio/people/周围环境安全，我是救护志愿者，我可以帮助您吗.mp3");
            if (autoClip != null) 
            {
                am.PlayVoice(autoClip);
                waitTime = autoClip.length + 1f;
            }
#endif
        }
        
        Debug.Log($"PageController: 开始等待 {waitTime} 秒以切换摄像机并激活鞋子");

        yield return new WaitForSeconds(waitTime);

        if (am != null) am.SwitchToCamera3();

        var point2 = GameObject.Find("touchArray/point2");
        if (point2 == null)
        {
            var touchArray = GameObject.Find("touchArray");
            if (touchArray != null)
            {
                var p2 = touchArray.transform.Find("point2");
                if (p2 != null) point2 = p2.gameObject;
            }
        }

        if (point2 != null)
        {
            point2.SetActive(true);
            Debug.Log("PageController: 镜头切换到camera3，point2 已显示");
        }

        if (_uiManager != null)
        {
            _uiManager.ShowTip("请点击伤员大腿附近，评估伤情并确认是否疑似骨折。");
        }

        StartExamFlowIfNeeded();
    }

    private void PrepareInitialInteractionObjects()
    {
        bool isSplintPractice = GameManager.Instance != null &&
                                GameManager.Instance.CurrentMode == ExperimentMode.Learn &&
                                GameManager.Instance.CurrentFixationMethod == FixationMethod.SplintFixation;
        bool isSplintExam = GameManager.Instance != null &&
                            GameManager.Instance.CurrentMode == ExperimentMode.Exam &&
                            GameManager.Instance.CurrentFixationMethod == FixationMethod.SplintFixation;

        var splintFlow = EnsureSplintPracticeFlow();
        if (isSplintPractice && splintFlow != null)
        {
            splintFlow.BeginPractice();
        }
        else if (splintFlow != null)
        {
            splintFlow.StopPractice();
        }

        HideCanvasPanel("VideoPanel");

        var shose = FindSceneObject("Shose");
        var point2 = GameObject.Find("touchArray/point2");
        if (point2 == null)
        {
            var touchArray = GameObject.Find("touchArray");
            if (touchArray != null)
            {
                var p2 = touchArray.transform.Find("point2");
                if (p2 != null) point2 = p2.gameObject;
            }
        }

        if (shose != null)
        {
            var h = shose.GetComponent<ShoseClickHandler>();
            if (h == null) h = shose.AddComponent<ShoseClickHandler>();
            h.targetPoint = GameObject.Find("ShosePoint")?.transform;

            var ping004 = FindFirstPingStepObject();
            if (isSplintPractice && splintFlow != null && splintFlow.ConfigureShose(h))
            {
                Debug.Log("PageController: 夹板固定练习 Shose 已绑定到 manMuban/ping.001");
            }
            else if (isSplintExam)
            {
                h.nextObject = null;
                Debug.Log("PageController: 夹板固定考核 Shose 不直接激活肢体固定 ping");
            }
            else
            {
                h.nextObject = ping004;
            }

            h.enabled = false;
            shose.SetActive(true);
            Debug.Log("PageController: Shose 已在开场完成后立即显示");
        }

        if (point2 != null)
        {
            var oldHandler = point2.GetComponent<TouchPositionHandler>();
            if (oldHandler != null) Destroy(oldHandler);

            var h2 = point2.GetComponent<Point2ClickHandler>();
            if (h2 == null) h2 = point2.AddComponent<Point2ClickHandler>();
            if (h2.nextObject == null) h2.nextObject = shose;

            point2.SetActive(false);
        }
    }

    private void HideShose()
    {
        var shose = FindSceneObject("Shose");
        if (shose != null)
        {
            shose.SetActive(false);
        }
    }

    private SplintPracticeFlowManager EnsureSplintPracticeFlow()
    {
        var flow = FindObjectOfType<SplintPracticeFlowManager>(true);
        if (flow != null) return flow;

        var managers = GameObject.Find("[Managers]");
        if (managers == null) managers = gameObject;
        return managers.AddComponent<SplintPracticeFlowManager>();
    }

    private ExamFlowManager EnsureExamFlow()
    {
        var flow = FindObjectOfType<ExamFlowManager>(true);
        if (flow != null) return flow;

        var managers = GameObject.Find("[Managers]");
        if (managers == null) managers = gameObject;
        return managers.AddComponent<ExamFlowManager>();
    }

    private GameObject FindFirstPingStepObject()
    {
        foreach (var ping in GetSceneObjectsOfType<PingClickHandler>())
        {
            if (ping != null && ping.name == "ping.004") return ping.gameObject;
        }

        foreach (var ping in GetSceneObjectsOfType<PingClickHandler>())
        {
            if (ping != null && ping.pingIndex == 0) return ping.gameObject;
        }

        return null;
    }

    #endregion

}