using System.Collections;
using System.Collections.Generic;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.EventSystems;

public class PlayerMain : MonoBehaviour
{
    private static PlayerMain instance;
    public static PlayerMain Instance => instance;
    private PetObject petObj;
    public Transform obj;

    //是否开始点击
    public bool isStart=true;
    //技能2开启
    public bool isSkillTwoStart = false;

    // Start is called before the first frame update
    void Awake()
    {
        instance = this;
    }

    void Start()
    {
        GameMgr.Instance.init();
        ScreenAspect();
    }

    // Update is called once per frame
    void Update()
    {
#if UNITY_EDITOR
        // 检查鼠标指针是否在 UI 元素上
        if (EventSystem.current.IsPointerOverGameObject())
        {
            // 如果在 UI 元素上，直接返回
            return;
        }
        //鼠标左键点击
        if (Input.GetMouseButtonDown(0))
        {
            //创建射线
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit2D hit =
                Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));
            if (hit.collider != null)
            {
                petObj = hit.collider.gameObject.GetComponent<PetObject>();
                if (isStart)
                {
                    GameMgr.Instance.IsHightLight(petObj);
                }
                else if (isSkillTwoStart)
                {
                    GameMgr.Instance.SkillTwoDelPet(petObj);
                }
            }
        }

        if (Input.GetMouseButtonUp(0) && isStart)
        {
            //创建射线
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit2D hit =
                Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));


            if (hit.collider == null || hit.collider.gameObject.GetComponent<PetObject>().isHightLight == false)
            {
                GameMgr.Instance.CancelHightLight();
            }
            else
            {
                GameMgr.Instance.DelHightLight();
            }
        }
        //技能2检测游戏对象
        if (Input.GetMouseButtonDown(0) && isSkillTwoStart)
        {
            //创建射线
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit2D hit = Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));

            // 射线检测
            if (hit.collider != null)
            {
                //选中的目标
                PetObject pet = hit.collider.GetComponent<PetObject>();
                GameMgr.Instance.SkillTwoDelPet(pet);
            }

        }

#elif UNITY_ANDROID || UNITY_IOS
        //检测触摸输入
        if (Input.touchCount > 0)
        {
            Touch touch = Input.GetTouch(0);

            //手指按下
            if (touch.phase == TouchPhase.Began)
            {
                if (!IsPointerOverUI(touch))
                {
                    //创建射线
                    Ray ray = Camera.main.ScreenPointToRay(touch.position);
                    RaycastHit2D hit =
                        Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));

                    if (hit.collider != null)
                    {
                        petObj = hit.collider.gameObject.GetComponent<PetObject>();
                        if (isStart)
                        {
                            GameMgr.Instance.IsHightLight(petObj);
                        }
                        else if (isSkillTwoStart)
                        {
                            GameMgr.Instance.SkillTwoDelPet(petObj);
                        }
                    }
                }
            }

            if (touch.phase == TouchPhase.Ended)
            {
                //创建射线
                Ray ray = Camera.main.ScreenPointToRay(touch.position);
                RaycastHit2D hit =
                    Physics2D.Raycast(ray.origin, ray.direction, 1000, 1 << LayerMask.NameToLayer("PetObject"));
                if (hit.collider == null || hit.collider.gameObject.GetComponent<PetObject>().isHightLight == false)
                {
                    GameMgr.Instance.CancelHightLight();
                }
                else
                {
                    GameMgr.Instance.DelHightLight();
                }
            }
        }
#endif

    }

    private bool IsPointerOverUI(Touch touch)
    {
        PointerEventData pointerEventData = new PointerEventData(EventSystem.current)
        {
            position = touch.position
        };

        // 检测UI元素
        List<RaycastResult> results = new List<RaycastResult>();
        EventSystem.current.RaycastAll(pointerEventData, results);

        return results.Count > 0; // 如果检测到UI元素，则返回true
    }

    private void ScreenAspect()
    {
        // 获取相机组件
        Camera cam = GetComponent<Camera>();
        // 计算当前宽高比
        float f1 = (float)Screen.width / (float)Screen.height;
        // 计算参考宽高比
        float f2 = 1080f / 1920f;
        // 根据屏幕宽高比调整相机的正交大小
        cam.orthographicSize = (f1 / f2) * 9.5f;

        obj.localScale = new Vector3(f1 / f2*obj.localScale.x, f1 / f2*obj.localScale.y, obj.localScale.z);
    }
}