using System;
using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UIElements;

/* 本文件控制游戏右侧的菜单按键逻辑
 * 左侧的菜单按键逻辑
 */

public class MenuController : MonoBehaviour
{
    // Start is called once before the first execution of Update after the MonoBehaviour is created
    private VisualElement mainMenu, dogIcon, dogList, quit;
    private List<VisualElement> subMenu = new();
    //private bool isSubMenuShow = false;
    private GameObject uiPlaceholder;       // Manu会控制其他子菜单显示和隐藏，因此所有子菜单都必须挂载在UI Placeholder下
    private GameObject vamUI;      // vamUI = Voice and Manu UI; 
    private GameObject shoppingUI, statusUI, warehouseUI, userInfoUI;       // 对应点击菜单后展开的几个子菜单
    private List<Label> dogNames = new();

    private static bool isMenuShowed = false;        // 右侧子菜单是否展开
    private static DateTime menuShowTime;        // 菜单展开时间

    private float longPressTime = 1.0f; // 长按时间阈值
    private float dogNamePressStartTime;
    void OnEnable()
    {
        // 找到需要控制的其他子菜单
        uiPlaceholder = GameObject.Find("UI Placeholder");
        vamUI = uiPlaceholder.transform.Find("VoiceAndMenu").gameObject;
        shoppingUI = uiPlaceholder.transform.Find("ShoppingUI").gameObject;
        statusUI = uiPlaceholder.transform.Find("Status").gameObject;
        warehouseUI = uiPlaceholder.transform.Find("Warehouse").gameObject;
        userInfoUI = uiPlaceholder.transform.Find("User Info").gameObject;

        // 找到当前菜单下的项目
        var root = GetComponent<UIDocument>().rootVisualElement;
        var menuArea = root.Q<VisualElement>("menuArea");
        mainMenu = menuArea.Q<VisualElement>("mainMenu");
        var home = menuArea.Q<VisualElement>("home");       // 修改用户信息
        subMenu.Add(home);
        //var playground = menuArea.Q<VisualElement>("playground");       // 废弃
        //subMenu.Add(playground);
        var shop = menuArea.Q<VisualElement>("shop");       // 商店
        subMenu.Add(shop);
        var warehouse = menuArea.Q<VisualElement>("warehouse");     // 使用道具
        subMenu.Add(warehouse);
        var status = menuArea.Q<VisualElement>("status");       // 宠物状态
        subMenu.Add(status);
        var walkdogsBtn = menuArea.Q<VisualElement>("walkdogs");        // AR摄像头
        subMenu.Add(walkdogsBtn);


        mainMenu.RegisterCallback<ClickEvent>(e => MainMenuClick(e));
        // root加载完成后，所有element算出位置后再进行计算
        root.RegisterCallback<GeometryChangedEvent>(e => OnMainMenuClickGeometryChanged(e));

        // 绑定按键点击事件
        //playground.RegisterCallback<ClickEvent>(e => PlayGroundClick(e));
        shop.RegisterCallback<ClickEvent>(e => ShopClick(e));
        warehouse.RegisterCallback<ClickEvent>(e => WarehouseClick(e));
        status.RegisterCallback<ClickEvent>(e => StatusClick(e));
        walkdogsBtn.RegisterCallback<ClickEvent>(e => WalkdogsClick(e));
        home.RegisterCallback<ClickEvent>(e => HomeClick(e));

        //var root = GetComponent<UIDocument>().rootVisualElement;
        dogIcon = root.Q<VisualElement>("dogMenu").Q<VisualElement>("dogIcon");
        dogList = root.Q<VisualElement>("dogMenu").Q<VisualElement>("dogList");
        quit = root.Q<VisualElement>("quit");
        quit.RegisterCallback<ClickEvent>(e => QuitClick());       // 退出游戏按钮

        DogNameInit();      // 初始化狗的名字，这里当菜单重新激活后再次加载

        dogIcon.RegisterCallback<ClickEvent>(e => DogIconClick(e));

        // 如果狗的数量小于2只，隐藏狗的图标
        //if (UserProperty.dogs.Count == 1)
        //{
        //    dogIcon.visible = false;
        //}
        if (UserProperty.isRegUser == false)
        {
            // home.style.display = DisplayStyle.None;
            subMenu.Remove(home);
        }

        // 目前开发暂时隐藏camera按钮
        // cameraBtn.style.display = DisplayStyle.None;
        //subMenu.Remove(cameraBtn);
    }

    private void Start()
    {
        // DogNameInit();      // 初始化狗的名字，首次加载
    }

    private void OnDisable()
    {
        subMenu.Clear();       // 因为启动时候调用OnEable数据会被重复加载
    }

    // Update is called once per frame
    void FixedUpdate()
    {
        CollapseMenuCheck();        // 定时收起菜单
        DogNameDisplayEffect();         // 放大缩小选中狗的名字
    }

    #region 右侧按键控制
    Vector2 CalcPosition(Vector2 curPosition, float angle, float distance)
    {
        float radians = angle * Mathf.Deg2Rad;
        float x = curPosition.x + distance * Mathf.Cos(radians);
        float y = curPosition.y - distance * Mathf.Sin(radians);
        Vector2 newPosition = new Vector2(x, y);
        return new Vector2(x, y);
    }

    // 初始化所有按键的位置
    void InitialSubMenu()
    {
        foreach (var subMenu in subMenu)
        {
            subMenu.style.left = mainMenu.resolvedStyle.left;
            subMenu.style.top = mainMenu.resolvedStyle.top;
            subMenu.visible = false;
        }
    }

    // 点击主按键后所有子按键展开并显示
    void MainMenuClick(ClickEvent evt)
    {
        if (isMenuShowed)
        {
            MenuReset();
            return;
        }
        // curAngle 初始角度，angleDelta 2个子菜单之间角度，distance 弹出距离，showTimer 显示时间
        float curAngle = 100f;
        // float angleDelta = 40f;
        float angleDelta = 200 / subMenu.Count;
        float distance = 70f;
        //float showTimer = 3.0f;
        foreach (var menu in subMenu)
        {
            menu.visible = true;
            var newPosition = CalcPosition(mainMenu.layout.position, curAngle, distance);
            menu.style.left = newPosition.x;
            menu.style.top = newPosition.y;
            curAngle += angleDelta;
        }
        mainMenu.transform.scale = new Vector2(0.8f, 0.8f);
        isMenuShowed = true;
        menuShowTime = DateTime.Now;
    }

    // 初始化后屏幕尺寸变化时候调用。在此处应用于第一次屏幕初始化完成。
    void OnMainMenuClickGeometryChanged(GeometryChangedEvent evt)
    {
        InitialSubMenu();
    }

    void MenuReset()
    {
        //yield return new WaitForSeconds(3.0f);
        mainMenu.transform.scale = new Vector2(1.0f, 1.0f);
        isMenuShowed = false;
        InitialSubMenu();
    }

    void PlayGroundClick(ClickEvent evt)
    {
        SceneManager.LoadScene("Playground", LoadSceneMode.Single);
    }

    void ShopClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        shoppingUI.SetActive(true);
    }

    void WarehouseClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        warehouseUI.SetActive(true);
    }

    void StatusClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        statusUI.SetActive(true);
    }

    void HomeClick(ClickEvent evt)
    {
        vamUI.SetActive(false);
        userInfoUI.SetActive(true);
    }

    void WalkdogsClick(ClickEvent evt)
    {
        MaskTransitions.TransitionManager.Instance.LoadLevel("WalkDogs");
        // SceneManager.LoadScene("WalkDogs", LoadSceneMode.Single);
    }

    // 菜单打开后收回菜单
    void CollapseMenuCheck()
    {
        if (isMenuShowed)
        {
            // 计算两个时间点之间的差值
            TimeSpan difference = DateTime.Now - menuShowTime;

            // 检查差值是否超过3秒
            if (difference.TotalSeconds > 3)
            {
                MenuReset();
            }
        }
    }
    #endregion



    private void QuitClick()
    {
        string msg = GameTool.GetValueAtPath(EnviromentSetting.languageData, new string[] { "game_message", "quit_game", EnviromentSetting.languageCode });
        MessageBoxController.YorN_Message(msg, () => Application.Quit());
    }


    #region 左侧菜单控制
    void DogIconClick(ClickEvent e)
    {
        Debug.Log("DogIconClick");
        if (dogList.visible == false)
        {
            dogList.visible = true;
        }
        else
        {
            dogList.visible = false;
        }

    }

    // 点击狗的名字时候处理
    void DogNamePointDown(PointerDownEvent e, int index)
    {
        dogNamePressStartTime = Time.unscaledTime; // 记录按下时间
    }
    void DogNamePressUP(PointerUpEvent e, int index)
    {
        GameData.focusDog = index;
        //Debug.Log("e delta time=" + e.);
        float deltaTime = Time.unscaledTime - dogNamePressStartTime;
        // Debug.Log("delta time is:" + deltaTime.ToString());
        if (deltaTime < longPressTime)
        {
            // 短按效果，切换狗的名字
            if (GameData.homeCamFocusDog == index)
            {
                // 重复点击狗的名字，恢复广角，所有狗的名字显示一样大小
                HomeController.dogCam.Priority = 1;
                HomeController.playerCam.Priority = 10;
                GameData.homeCamFocusDog = 100;     // 100表示不聚焦
                                                    //dogNames[index].transform.scale = new Vector2(1f, 1f);
            }
            else
            {
                GameData.homeCamFocusDog = index;
                //dogNames[index].transform.scale = new Vector2(1.2f, 1.2f);
                HomeController.dogCam.m_LookAt = HomeController.dogsInScene[index].gameObject.transform;
                HomeController.dogCam.Priority = 10;
                HomeController.playerCam.Priority = 1;
                HomeController.lastCameraChange = DateTime.Now;
            }
        }
        else
        {
            // 长按效果，进入互动模式
            HomeController.Instance.SetSceneMode(SceneMode.INACTIVE);
            HomeController.Instance.VoiceButtonOnlySwitch(true);
            string focusDogId = UserProperty.GetDogIdByIndex(index);
            foreach (var dog in HomeController.dogsInScene)
            {
                if (dog.dogProperty.d_id == focusDogId)
                {
                    // if (GameTool.Random100Check(dog.dogProperty.voiceCall))
                    // {
                    // dog.SetupInteract();
                    HomeController.Instance.SetInteractDog(dog.gameObject);
                    // focusdog 开启互动模式
                    // HomeController.dogsInScene[GameData.focusDog].dogState = DogState.INTERACT;
                    HomeController.dogsInScene[GameData.focusDog].SetupInteract();
                    // 其他狗进入隐藏模式
                    //foreach (var otherDog in HomeController.dogsInScene)
                    //{
                    //    if (otherDog.dogProperty.d_id != focusDogId)
                    //    {
                    //        otherDog.gameObject.SetActive(false);
                    //    }
                    //}
                }
            }
            HomeSoundEffectController.Instance.PlaySoundEffect(5);
        }

        if (dogList.visible == true) { dogList.visible = false; }
    }

    // 初始化狗的名字
    void DogNameInit()
    {
        dogNames.Clear();       // 清空Label列表
        foreach (Label child in dogList.Children())     // 寻找Label元素加入列表
        {
            dogNames.Add(child);
        }

        // 注入狗的名字，最多注入3只狗
        for (int i = 0; i < Math.Min(UserProperty.dogs.Count, 3); i++)
        {
            int index = i;
            dogNames[i].style.display = DisplayStyle.Flex;
            dogNames[i].text = UserProperty.dogs[i].dog_name;
            dogNames[i].RegisterCallback<PointerUpEvent>(e => DogNamePressUP(e, index));
            dogNames[i].RegisterCallback<PointerDownEvent>(e => DogNamePointDown(e, index));
        }
    }

    // 根据摄像机聚焦和FocusDog调整显示效果
    void DogNameDisplayEffect()
    {
        for (int i = 0; i < UserProperty.dogs.Count; i++)
        {
            if (i == GameData.homeCamFocusDog)
            {
                dogNames[i].transform.scale = new Vector2(1.2f, 1.2f);
            }
            else
            {
                dogNames[i].transform.scale = new Vector2(1f, 1f);
            }

            if (i == GameData.focusDog)
            {
                dogNames[i].style.backgroundColor = new Color(180, 250, 120, 180);
            }
            else
            {
                dogNames[i].style.backgroundColor = new Color(255, 255, 255, 0);
            }
        }
    }
    #endregion
}

public static class MenuData
{
    public static bool isMenuShowed = false;
    public static DateTime menuShowTime;
}