using Assets.Scenes.Ride.Scripts;
using Assets.Scripts.Apis.Models;
using DG.Tweening;
using Mapbox.Utils;
using System;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;

namespace Assets.Scripts.Scenes.VideoRide
{
    public abstract class AbstractVideoPlayer : MonoBehaviour
    {
        protected Animator animator;
        public GameObject head { get; set; }
        protected Image ftpImage { get; set; }
        protected Text headName { get; set; }
        protected Text headWkg { get; set; }
        public int UserId;
        public string UserName;
        public double weight;//体重
        protected double bicycleWeight;//车重
        protected double preSpeed;
        public double speed;
        public double power;
        protected double elevation;
        public double cadance;
        public double wkg;
        public int? heartRate { get; set; }
        public int ticks;
        public double totalDistance;
        public double currentSlope;
        protected double nextSlope;
        protected double nextSlopeDistance;
        public double distance;
        protected double currentSlopeDistance;
        protected double lastEndDistance;
        public double totalClimb;
        public Vector2d currentlatLon { get; set; }
        public int currentIndex;
        protected float bearing = 0f;
        protected MapDataModel mapData;
        protected bool isHit = false;
        protected RaycastHit hit;
        float timer = 1f;
        protected bool start = true;
        protected VideoGameManager manager { get; set; }
        Camera camera;
        float currenPlayerHeight;

        protected virtual void Start()
        {
            animator = GetComponent<Animator>();
            manager = FindObjectOfType<VideoGameManager>();
            mapData = manager.GetMapData();
            ComputeNextSlope();//初始化坡度等
            if (speed > 0)
            {
                animator.Play("rideLoop");
            }
            else
            {
                animator.Play("idle");
            }
            camera = Camera.main;
        }

        protected virtual void Update()
        {
            timer -= Time.deltaTime;
            ComputeAnimator();//控制动画
            CreateHeadImage();
            while (timer <= 0)
            {
                try
                {
                    ComputeNextSlope();//计算下一个坡度
                    ComputePlayer();//计算人物属性
                    //animator.Play("touchHead");
                    if (manager.IsStart())
                    {
                        ticks++;
                        Forward();
                        ComputeRecord();
                        ComputeVideo();
                        RayCastHit();
                        Turn();
                    }
                 
                    timer += 1f;
                }
                catch (Exception e)
                {
                    power = 0;
                    speed = 0;
                    Debug.LogError(e.Message);
                }
            }

        }

        //人物碰撞
        void OnCollisionEnter(Collision collision)
        {
            //manager.GetSlotIndex();
        }

        void RayCastHit() 
        {
            //获取player的position信息
            Vector3 pos = transform.position;
            //射线碰撞物信息接收

            //第二种写法
            //我们可以先创建出一条射线
            Ray ray = new Ray(pos, new Vector3(0, 0, 1));
            //然后用这条射线去做射线检测
            //射线，输出碰撞体信息，射线长度，射线在那一层检测，射线不忽略开启触发器(istrigger)的碰撞体
            isHit = Physics.Raycast(ray, out hit, 1f, 1 << 0, QueryTriggerInteraction.Collide);
            if (isHit)
            {
                print(hit.collider.name);
            }
        }
        protected void ComputeRandom() 
        {
            var offset = 30;
            if (ticks % 6 == 0)
                transform.DOMoveZ(transform.position.z - 1.1f*offset, 1f);
            if (ticks % 5 == 0)
                transform.DOMoveZ(transform.position.z + offset, 2f);

            //人物的rotation y
            transform.DOLocalRotate(new Vector3(0f, bearing, 0f), 1f);
        }
        //动画状态机
        protected virtual void ComputeAnimator()
        {
            if (animator != null)
            {
                animator.SetFloat("preSpeed", (float)preSpeed);
                animator.SetFloat("speed", (float)speed);
                animator.SetFloat("grade", (float)currentSlope);
                animator.SetFloat("power", (float)power);
                var headBack = ticks % 10 == 0 && speed > 0 && bearing == 0;
                var drink = ticks % 15 == 0 && speed > 0 && bearing == 0;
                animator.SetBool("headBack", headBack);
                animator.SetBool("drinking", drink);
            }
        }
        protected virtual int GetCurrentFrame() 
        { 
            return manager.GetCurrentFrame();
        }
        private bool animated = false;
        //大转弯是60度
        private int offset = 0;
        protected virtual void Turn() 
        {
            var currentFrame = GetCurrentFrame();
            var result = manager.mockDirection.Where(c => c.Start < currentFrame && c.End > currentFrame).FirstOrDefault();
            if (result != null)
            {
                bearing = result.Value;
            }
            animator.SetFloat("bearing", bearing);
            if (Math.Abs(bearing) > 50)
            {
                if (!animated)
                {
                    animated = true;
                    transform.DOMoveX(transform.position.x + 3, 1).onComplete += () =>
                    {
                        offset = -3;
                    };
                    print(176);
                }
            }
            else 
            {
                if (offset != 0)
                {
                    transform.DOMoveX(transform.position.x + offset, 1f).onComplete += () =>
                    {
                        animated = false;
                    };
                    offset = 0;
                }
            }
            transform.DORotate(new Vector3(0, bearing, 0), 1f);
            //var aniInfo = animator.GetCurrentAnimatorStateInfo(0);
            //if (aniInfo.loop)
            //{

            //}
        }
        //计算人物当前属性
        protected virtual void ComputePlayer()
        {
            if (power > 0)
            {
                preSpeed = speed;
                speed = Helper.CalculateSpeed(elevation, currentSlope, power, weight, bicycleWeight);
            }
            else
            {
                speed = 0;
                distance = 0;
            }
            //一旦有功率就开始骑行、否则暂停
            if (!manager.IsQuit() && manager.CurrentPlayer.UserId == UserId && !manager.IsQuit())
            {
                if (power > 0)
                {
                    manager.StartGame();
                }
            }
        }

        private void Forward() 
        {
            try
            {
                if (mapData == null)
                    mapData = manager.GetMapData();
                distance = Math.Round(speed / 3600, 5, MidpointRounding.AwayFromZero);
                totalDistance += distance;
                currentlatLon = manager.Along(totalDistance % mapData.TotalDistance);
            }
            catch (Exception e)
            {
                Debug.LogError(e);
            }
        }

        protected virtual void ComputeVideo()
        {
            mapData = manager.GetMapData();
            float ratio = 1;
            if (currentIndex + 1 < mapData.List.Count)
            {
                ratio = (float)(speed / mapData.List[currentIndex + 1].Speed);
            }
            else
            {
                ratio = (float)(speed / mapData.List[currentIndex].Speed);
            }
            if (manager.CurrentPlayer != null && manager.CurrentPlayer.UserId != UserId)
                return;

            manager.Play(ratio);
        }

        protected virtual void ComputeRecord() { }

        //计算当前区段属性下一个区段属性
        void ComputeNextSlope()
        {
            double sumDistance = 0;
            mapData = manager.GetMapData();
            if (mapData == null)
                return;
            var pointList = mapData.List;
            int preIndex = 0;
            for (int i = 0; i < pointList.Count; i++)
            {
                sumDistance += pointList[i].Distance;
                //decimal left = (decimal)totalDistance * 1000;
                decimal left = (decimal)totalDistance % (decimal)mapData.TotalDistance;//处理多圈的情况
                left *= 1000;
                decimal right = (decimal)sumDistance;
                if (left <= right)
                {
                    currentIndex = i;
                    break;
                }
            }
            var DOUBLE_DELTA = 1E-6;
            if (Math.Abs(totalDistance - mapData.TotalDistance) < DOUBLE_DELTA)
            {
                currentIndex = pointList.Count - 1;
            }
            preIndex = currentIndex > 0 ? currentIndex - 1 : 0;//前一个索引
            int nextIndex = currentIndex == pointList.Count - 1 ? currentIndex : currentIndex + 1; //计算下一个点的坡度和距离

            elevation = pointList[currentIndex].Elevation;
            currentSlope = pointList[currentIndex].Grade;
            //CurrentDistance = pointList[currentIndex].Distance;
            //计算下一个海拔和坡度&当前区间距离
            nextSlope = pointList[nextIndex].Grade;
            nextSlopeDistance = sumDistance - totalDistance * 1000;
            //NextSlopeTotalDistance = pointList[nextIndex].Distance;
            currentSlopeDistance = (totalDistance * 1000 - (sumDistance - pointList[currentIndex].Distance));
            //计算累计爬升
            totalClimb = 0;
            for (int i = 1; i <= currentIndex; i++)
            {
                var diff = mapData.List[i].Elevation - mapData.List[i - 1].Elevation;
                if (diff > 0)
                {
                    totalClimb += diff;
                }
            }
        }

        public void CreateHeadImage() 
        {
            if (head == null)
            {
                if (manager.GetHeadInfo() != null)
                {
                    head = Instantiate(manager.GetHeadInfo(), manager.GetCanvasTransform());
                    ftpImage = head.transform.Find("ftp").GetComponent<Image>();
                    headName = head.transform.Find("name").GetComponent<Text>();
                    headWkg = head.transform.Find("wkg").GetComponent<Text>();
                }
            }
            if (head != null)
            {
                //它们的乘积就是高度
                Vector3 worldPosition = new Vector3(transform.position.x, transform.position.y+1.5f, transform.position.z);
                var playerScreenPos = Camera.main.WorldToScreenPoint(worldPosition);
                head.transform.position = playerScreenPos;
                ftpImage.fillAmount = (float)(wkg / 6);
                headName.text = UserName;
                headWkg.text = $"{wkg}W/KG";
            }
        }

        public void Destroy()
        {
            if (manager.CurrentPlayer != null && manager.CurrentPlayer.UserId == UserId)
            {
                manager.Pause();
            }
            head?.Destroy();
            gameObject.Destroy();
        }
    }
}