using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using JC.Unity;

/**SmartBow_事件系统 */
public class SB_EventSystem : MonoBehaviour
{   
    public static SB_EventSystem ins;
    MouseTest mouseTest;

    void Awake()
    {
        if (ins) {
            Destroy(this.gameObject);
        } else {
            ins = this;
            DontDestroyOnLoad(this.gameObject);
            AwakenSimulateMouse();
        }
    }

    void Start() {
        mouseTest = new MouseTest(this);
        InitListenerForMouseClickHightColor();
    }

    void Update() {
        UpdateMoveSimulateMouse();
        mouseTest.Update();
    }
    
    [SerializeField] SimulateMouse simulateMouse;

    #region  客户要求鼠标点到按钮时，按钮高亮
        Graphic lockGraphic = null;
        Color pointerClickColor = Color.yellow;
        void InitListenerForMouseClickHightColor() {
            simulateMouse.OnPointerClick += (Selectable target) => {
                if (lockGraphic) return;
                Button btn = target.GetComponent<Button>();
                if (btn.transition != Selectable.Transition.ColorTint) return;
                if (btn.targetGraphic) {
                    Graphic graphic = btn.targetGraphic;
                    lockGraphic = graphic;
                    Color oldColor = graphic.color;
                    graphic.color = pointerClickColor;
                    DoTweenUtil.CallDelay(0.3f, () => {
                        lockGraphic = null;
                        graphic.color = oldColor;    
                    });
                }
            };
        }
    #endregion

    #region 鼠标激活/关闭
        [System.NonSerialized] public bool simulateMouseIsAwaked;
        public void AwakenSimulateMouse() {
            simulateMouseIsAwaked = !simulateMouse.gameObject.activeSelf;
            simulateMouse.gameObject.SetActive(simulateMouseIsAwaked);
            hasAxisQuat = false;
        }
    #endregion 鼠标激活/关闭

    #region 模拟鼠标移动
        Vector3 targetNormalVector;
        Quaternion targetAxisQuat;
        Quaternion nowAxisQuat;
        bool hasAxisQuat;
        public void MoveSimulateMouse(Quaternion axisQuat) {
            if (clickCooling) { //点击就是射出，射出会产生抖动，防止接收抖动后的数据
                hasAxisQuat = false;
                return;
            } 
            //格式化
            Vector3 normalVector = axisQuat * Vector3.forward; //得出对应的法向量
            axisQuat = Quaternion.LookRotation(normalVector); //变回四元组，主要作用是规范，去除z轴影响
            if (hasAxisQuat) {
                //法向量的z从＋到－或从－到＋，都会导致y轴转180度，也就是x轴旋转从<90跨越>90时触发的问题，这种情况要避免
                if (
                    normalVector.z <= 0 && targetNormalVector.z >= 0 ||
                    normalVector.z >= 0 && targetNormalVector.z <= 0
                ) {
                    hasAxisQuat = false; //重置
                    return;
                }
                //ok
                targetAxisQuat = axisQuat;
                targetNormalVector = normalVector;
            } else {
                nowAxisQuat = targetAxisQuat = axisQuat;
                targetNormalVector = normalVector;
                hasAxisQuat = true;
            }
        }
        Vector2 deltaVectorForMouse;
        void UpdateMoveSimulateMouse() {
            if (!simulateMouseIsAwaked) return;
            if (hasAxisQuat) {
                Vector3 lastAngle = nowAxisQuat.eulerAngles;
                nowAxisQuat = Quaternion.Lerp(nowAxisQuat, targetAxisQuat, Time.deltaTime * 15f);
                Vector3 curAngle = nowAxisQuat.eulerAngles;
                float dx = FormatDeltaAngleY(curAngle.y - lastAngle.y) / 150f * simulateMouse.GetScaleScreenWidth();
                float dy = -FormatDeltaAngleX(curAngle.x - lastAngle.x) / 150f * simulateMouse.GetScaleScreenHeight();
                deltaVectorForMouse.x = dx;
                deltaVectorForMouse.y = dy;
                simulateMouse.MoveMousePointer(deltaVectorForMouse);
            }
        }
        float FormatDeltaAngleX(float value)
        {
            return FormatDeltaAngleY(value);
        }
        float FormatDeltaAngleY(float value) 
        {
            if (Mathf.Abs(value) > 180) {
                if (value < 0) {
                    return 360f + value; 
                }
                if (value > 0) {
                    return value - 360f;
                }
            }
            return value;
        }
    #endregion 模拟鼠标移动

    //点击鼠标
    bool clickCooling = false; //防止高频连续多次点击
    public void ClickMouse() {
        if (clickCooling) return;
        clickCooling = true;
        DoTweenUtil.CallDelay(0.3f, () => {
            clickCooling = false;
        });
        simulateMouse.ClickMousePointer();
    }

    //鼠标居中
    public void MakeMouseToScreenCenter() {
        simulateMouse.MakeMouseToScreenCenter();
    }

    /** 鼠标测试类 */
    class MouseTest {
        SB_EventSystem es;
        float mouseTestSensitivity = 3f;
        bool mouseTest = false; //开启测试-开关
        public MouseTest(SB_EventSystem es) {
            this.es = es;
        }
        public void Update() {
            if (mouseTest) {
                if (Input.GetKey(KeyCode.A)) {
                    es.deltaVectorForMouse.x = -mouseTestSensitivity;
                }
                else if (Input.GetKey(KeyCode.D)) {
                    es.deltaVectorForMouse.x = +mouseTestSensitivity;
                } else {
                    es.deltaVectorForMouse.x = 0;
                }
                if (Input.GetKey(KeyCode.W)) {
                    es.deltaVectorForMouse.y = +mouseTestSensitivity;
                }
                else if (Input.GetKey(KeyCode.S)) {
                    es.deltaVectorForMouse.y = -mouseTestSensitivity;
                } else {
                    es.deltaVectorForMouse.y = 0;
                }
                es.simulateMouse.MoveMousePointer(es.deltaVectorForMouse);
                if (Input.GetKeyDown(KeyCode.E)) {
                    es.AwakenSimulateMouse();
                }
                if (Input.GetKeyDown(KeyCode.R)) {
                    es.simulateMouse.ClickMousePointer();
                }
            }
        }
    }
}