using GCGame.Table;
using UnityEngine;

public class SkillCircleProjector : MonoBehaviour
{
    public Texture big_Red;
    public Texture big_Yellow;

    public MeshRenderer CircleEffect;
    public MeshRenderer ControlEffect;

    public Transform ControlRotation;

    private Tab_SkillEx currentSkill;
    public Texture Line_Red;
    //直线
    public Texture Line_Yellow;

    private readonly Quaternion oldRotation = Quaternion.Euler(0, 0, 0);
    public Texture Ring_Red;

    //圆环
    public Texture Ring_Yellow;
    public Texture SelectInner_Red;

    //扇形
    public Texture SelectInner_Yellow;
    public Texture Trip_Red;

    //陷阱
    public Texture Trip_Yellow;

    private void Awake()
    {
        DontDestroyOnLoad(gameObject);
    }

    private void LateUpdate()
    {
        var mainPlayer = ObjManager.Instance.MainPlayer;
        if (mainPlayer)
            transform.position = mainPlayer.Position;
    }

    public Vector2 InitSkillInfo(Tab_SkillEx skillEx, Vector2 defaultPoint)
    {
        if (Singleton<ObjManager>.Instance.MainPlayer == null)
            return Vector2.zero;
        var x = Singleton<ObjManager>.Instance.MainPlayer.transform.position.x;
        var y = Singleton<ObjManager>.Instance.MainPlayer.transform.position.y + 0.5f;
        var z = Singleton<ObjManager>.Instance.MainPlayer.transform.position.z;
        transform.position = new Vector3(x, y, z);
        var selector = TableManager.GetSkillTargetSelectorByID(skillEx.GetSelectorIdbyIndex(0));
        var type = GetSkillType(skillEx, selector);
        if (type == null)
        {
            gameObject.SetActive(false);
            return Vector2.zero;
        }
        else
        {
            currentSkill = skillEx;
            if (type != 5)
                defaultPoint = defaultPoint.normalized;
            SetCircleTex(false, skillEx.Radius * 2);
            switch (type)
            {
                case -1: return InitCircleRange(skillEx, null, defaultPoint);
                case 1: return InitCircleRange(skillEx, selector, defaultPoint);
                case 2: return InitSectorRange(skillEx, selector, defaultPoint);
                case 3: return InitLineRange(skillEx, selector, defaultPoint);
                case 4: return InitRingRange(skillEx, selector, defaultPoint);
                case 5: return InitTripRange(skillEx, selector, defaultPoint);
                default:
                    gameObject.SetActive(false);
                    return Vector2.zero;
            }
        }
    }

    //范围参数1(无则填-1 圆形扫描的半径 扇形扫描的半径 直线扫描的长度距离 环形的内圆半径）
    //范围参数2(无则填-1 圆形扫描 无填-1  扇形扫描扇形的角度值 直线扫描宽度距离 环形的外圆半径）
    //范围参数3(无则填-1 预留）
    //范围参数4（人数）
    private Vector2 InitCircleRange(Tab_SkillEx _skillExinfo, Tab_SkillTargetSelector selector, Vector2 vec,
        float rate = 0, bool isEnterRelex = false)
    {
        ControlEffect.gameObject.SetActive(false);
        return Vector2.zero;
    }

    private Vector2 InitSectorRange(Tab_SkillEx _skillExinfo, Tab_SkillTargetSelector selector, Vector2 vec,
        float rate = 0, bool isEnterRelex = false)
    {
        ControlEffect.gameObject.SetActive(true);
        var tex = SelectInner_Yellow;
        if (isEnterRelex)
            tex = SelectInner_Red;
        var dir = new Vector4(vec.x / 2 + 0.5f, vec.y / 2 + 0.5f, 1, 1);
        SetEffectSize(ControlEffect.transform, tex, _skillExinfo.Radius * 2);
        InitContrlo(tex, 1, 1, selector.GetRangParambyIndex(1), 0.2f, 0.002f, 0.005f, Color.red, dir, isEnterRelex);
        var point = Vector2.zero;
        point.x = Singleton<ObjManager>.Instance.MainPlayer.Position.x + rate * _skillExinfo.Radius * vec.x;
        point.y = Singleton<ObjManager>.Instance.MainPlayer.Position.z + rate * _skillExinfo.Radius * vec.y;
        return point;
    }

    private Vector2 InitLineRange(Tab_SkillEx _skillExinfo, Tab_SkillTargetSelector selector, Vector2 vec,
        float rate = 0, bool isEnterRelex = false)
    {
        ControlEffect.gameObject.SetActive(true);
        var tex = Line_Yellow;
        if (isEnterRelex)
            tex = Line_Red;
        float param1 = selector.GetRangParambyIndex(0);
        SetEffectSize(ControlEffect.transform, tex, _skillExinfo.Radius);
        InitContrlo(tex, 0, 0, 0, param1, 0, 0, Color.red, Vector4.zero, isEnterRelex);
        ControlRotation.localRotation = oldRotation;
        ControlEffect.transform.position = new Vector3(CircleEffect.transform.position.x,
            CircleEffect.transform.position.y, CircleEffect.transform.position.z + _skillExinfo.Radius / 2);
        var cross = Vector3.Cross(vec, new Vector3(0, 1, 0));
        var angle = Vector2.Angle(new Vector2(0, 1), vec);
        if (cross.z < 0)
            angle = 360 - angle;
        ControlRotation.RotateAround(ControlRotation.position, new Vector3(0, 1, 0), angle);
        var point = Vector2.zero;
        point.x = Singleton<ObjManager>.Instance.MainPlayer.Position.x + _skillExinfo.Radius * vec.x;
        point.y = Singleton<ObjManager>.Instance.MainPlayer.Position.z + _skillExinfo.Radius * vec.y;
        return point;
    }

    private Vector2 InitRingRange(Tab_SkillEx _skillExinfo, Tab_SkillTargetSelector selector, Vector2 vec,
        float rate = 0, bool isEnterRelex = false)
    {
        ControlEffect.gameObject.SetActive(false);
        return Vector2.zero;
    }

    private Vector2 InitTripRange(Tab_SkillEx _skillExinfo, Tab_SkillTargetSelector selector, Vector2 vec,
        float rate = 0, bool isEnterRelex = false)
    {
        ControlEffect.gameObject.SetActive(true);
        var tex = isEnterRelex ? Trip_Red : Trip_Yellow;
        int param1 = selector.GetRangParambyIndex(0);
        param1 = param1 / 100;
        SetEffectSize(ControlEffect.transform, tex, param1 * 2);
        InitContrlo(tex, 0, 1, 0, param1, 0, 0, Color.red, Vector4.zero, isEnterRelex);
        ControlEffect.transform.localPosition = vec.InsertY();
        return vec;
    }

    private void SetEffectSize(Transform texTransform, Texture tex, float size)
    {
        if (texTransform == null)
            return;
        if (size > 0)
        {
            var texHeigh = texTransform.localScale.y;
            var texWidth = texTransform.localScale.x;
            if (tex != null)
            {
                texHeigh = tex.height;
                texWidth = tex.width;
            }
            if (texHeigh > texWidth)
                texTransform.localScale = new Vector3(texWidth / texHeigh * size, size, 1);
            else
                texTransform.localScale = new Vector3(size, texHeigh / texWidth * size, 1);
        }
        else
        {
            texTransform.localScale = Vector3.one;
        }
    }

    private void SetCircleTex(bool isEnterRelex = false, float size = 0)
    {
        var tex = big_Yellow;
        if (isEnterRelex)
            tex = big_Red;

        CircleEffect.material.SetTexture("_ShadowTex", tex);
        //CircleEffect.material.SetInt("_UseChangeColor", isEnterRelex ? 0 : 1);
        SetEffectSize(CircleEffect.transform, tex, size);
    }

    private void InitContrlo(Texture tex, int type, float ratio, float Angle, float radiu, float linew1, float linew2,
        Color lineColor, Vector4 forword, bool isEnterRelex)
    {
        ControlEffect.material.SetTexture("_ShadowTex", tex);
        if (type > 0)
            ControlEffect.material.EnableKeyword("CLIP_BY_RANGE");
        else
            ControlEffect.material.DisableKeyword("CLIP_BY_RANGE");
        ControlEffect.material.SetFloat("_RangeAngle", Angle);
        ControlEffect.material.SetFloat("_RangeRadiu", radiu);
        ControlEffect.material.SetVector("_Forword", forword);
        ControlEffect.material.SetFloat("_LineW1", linew1);
        ControlEffect.material.SetFloat("_LineW2", linew2);
        ControlEffect.material.SetColor("_LineColor", lineColor);
        //ControlEffect.material.SetInt("_UseChangeColor", isEnterRelex ? 0 : 1);
        ControlRotation.localRotation = oldRotation;
        ControlEffect.transform.localPosition = Vector3.zero;
    }

    private Vector2 UpdateSectorRange(Vector2 vec, bool isEnterRelex)
    {
        var tex = SelectInner_Yellow;
        if (isEnterRelex)
            tex = SelectInner_Red;
        // 校正到方向
        var dirVector2 = vec.normalized;
        var dir = new Vector4(dirVector2.x / 2 + 0.5f, dirVector2.y / 2 + 0.5f, 1, 1);
        ControlEffect.material.SetInt("_UseChangeColor", isEnterRelex ? 0 : 1);
        ControlEffect.material.SetTexture("_ShadowTex", tex);
        ControlEffect.material.SetVector("_Forword", dir);
        return vec;
    }

    private Vector2 UpdateTripRange(Vector2 vec, bool isEnterRelex)
    {
        var tex = isEnterRelex ? Trip_Red : Trip_Yellow;
        ControlEffect.material.SetTexture("_ShadowTex", tex);
        //ControlEffect.material.SetInt("_UseChangeColor", isEnterRelex ? 0 : 1);
        ControlEffect.transform.localPosition = vec.InsertY();
        return vec;
    }

    private Vector2 UpdateLineRange(Vector2 vec, bool isEnterRelex)
    {
        var tex = Line_Yellow;
        if (isEnterRelex)
            tex = Line_Red;
        //ControlEffect.material.SetInt("_UseChangeColor", isEnterRelex ? 0 : 1);
        ControlEffect.material.SetTexture("_ShadowTex", tex);
        ControlRotation.localRotation = oldRotation;
        ControlRotation.rotation = Quaternion.LookRotation(vec.InsertY());
        //
        //Vector3 cross = Vector3.Cross(vec, new Vector3(0, 1, 0));
        //float angle = Vector2.Angle(new Vector2(0, 1), vec);
        //if (cross.z < 0)
        //    angle = 360 - angle;
        //ControlRotation.RotateAround(ControlRotation.position, new Vector3(0, 1, 0), angle);
        //
        //
        //
        //Vector2 point = Vector2.zero;
        //point.x = Singleton<ObjManager>.Instance.MainPlayer.Position.x + radiu * vec.x;
        //point.y = Singleton<ObjManager>.Instance.MainPlayer.Position.z + radiu * vec.y;
        return vec;
    }

    private Vector2 UpdateCircleRange(Vector2 vec, bool isEnterRelex)
    {
        return Vector2.zero;
    }

    private Vector2 UpdateRingRange(Vector2 vec, bool isEnterRelex)
    {
        return Vector2.zero;
    }

    //Vector2 WorldToCamera(Vector2 dirVec)
    //{
    //    Vector3 forward = Camera.main.transform.TransformDirection(Vector3.forward);
    //    forward.y = 0;
    //    forward = forward.normalized;
    //    Vector3 right = new Vector3(forward.z, 0, -forward.x);
    //
    //    var targetDirection = dirVec.x * right + dirVec.y * forward;
    //    targetDirection = targetDirection.normalized;
    //    dirVec.x = targetDirection.x;
    //    dirVec.y = targetDirection.z;
    //    return dirVec;
    //}

    public Vector2 UpdatePos(Vector2 vec, bool isEnterRelex)
    {
        if (currentSkill != null)
        {
            var selector = TableManager.GetSkillTargetSelectorByID(currentSkill.GetSelectorIdbyIndex(0));
            var type = GetSkillType(currentSkill, selector);
            if (type == null)
            {
                gameObject.SetActive(false);
                return Vector2.zero;
            }
            else
            {
                SetCircleTex(isEnterRelex, currentSkill.Radius * 2);
                switch (type)
                {
                    case 1: return UpdateCircleRange(vec, isEnterRelex);
                    case 2: return UpdateSectorRange(vec, isEnterRelex);
                    case 3: return UpdateLineRange(vec, isEnterRelex);
                    case 4: return UpdateRingRange(vec, isEnterRelex);
                    case 5: return UpdateTripRange(vec, isEnterRelex);
                    default: return Vector2.zero;
                }
            }
        }
        else
            return Vector2.zero;
    }
    // 目测-1等负数在switch中出现，因此只能用null表示不可使用的类型
    private int? GetSkillType(Tab_SkillEx skillEx, Tab_SkillTargetSelector selector)
    {
        int? type;
        if (selector != null)
        {
            if (skillEx.IsTargetGround())
            {
                type = selector.RangType;
                if (selector.RangCenter == 1)
                    type = 5;
            }
            else
            {
                type = 1;
            }
        }
        else
            type = null;
        return type;
    }
}