using Assets.Scripts.Apis.Models;
using GeoJSON.Net.Geometry;
using Mapbox.Unity.Map;
using Mapbox.Utils;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TurfCS;
using UnityEngine;

namespace Assets.Scenes.Ride.Scripts
{
    public abstract class AbstractPlayer: MonoBehaviour
    {
		[Header("Character")]
		[SerializeField]
		GameObject character;
		[SerializeField]
		Animator characterAnimator;
		AbstractMap map;

		#region 动画控制参数
		Vector3 nextPos;
		Vector3 prePos;
		float timer = 1.0f;//计时器
		#endregion

		#region 选手骑行数据
		protected Vector2d nextlatlong; //下一个点的坐标
		protected bool isStart;//开始或者暂停
		protected bool isQuit;//true 中途退出 或者到达终点
		protected bool isMajor;//是否是主人公
		protected MapDataModel mapData;
		protected int userId;
		protected DateTime startTime;//开始骑行时间
		protected DateTime endTime;//结束骑行时间
		protected double weight;//体重
		protected double bicycleWeight;//车重
		protected double speed;
		protected double power;
		protected double elevation;
		protected double cadance;
		protected int heartRate;
		protected int ticks;
		protected double totalDistance;
		protected double currentSlope;
		protected double nextSlope;
		protected double nextSlopeDistance;
		protected double distance;
		protected double currentSlopeDistance;
		protected double lastEndDistance;

		public int UserId { get => userId; }
		public bool IsStart { get => isStart; }
		public double Speed { get => speed; }
		public double Power { get => power; }
		public double Cadance { get => cadance; }
		public double HeartRate { get => heartRate; }
		public int TotalTicks { get => ticks; }
		public double TotalDistance { get => totalDistance; }
		public double CurrentSlope { get => currentSlope; }
		public double NextSlope { get => nextSlope; }
		public double NextSlopeDistance { get => nextSlopeDistance; }
		public double CurrentSlopeDistance { get => currentSlopeDistance; }
		public double Elevation { get => elevation; }
		public double LastEndDistance { get => lastEndDistance; }
		#endregion

		#region 游戏状态控制
		//开始骑行
		public void SetStart()
		{
			isStart = true;
			startTime = DateTime.Now;
		}
		//继续骑行
		public void SetContinue()
		{
			isStart = true;
		}
		//暂停骑行
		public void SetPause()
		{
			isStart = false;
		}
		//退出或者完成骑行
		public void SetQuit()
		{
			isQuit = true;
			endTime.AddSeconds(ticks);//计算结束时间
		}
		#endregion

		void Start()
		{
			Init();
		}

		void Update()
		{
			Excute();
		}
		#region 骑行逻辑
		//初始化骑行数据
		protected virtual void Init()
		{
			characterAnimator = GetComponentInChildren<Animator>();
			var mainController = transform.parent.GetComponent<CyclingController>();
			map = FindObjectOfType<AbstractMap>();
			mapData = mainController.GetMapData();//获取路书信息
			nextlatlong = new Vector2d(mapData.List[0].Point[0], mapData.List[0].Point[1]);//初始化人物位置 TODO加上之前骑行距离
		}

		protected virtual void Excute()
		{
			timer -= Time.deltaTime;
			if (timer <= 0)//定时器 一秒执行一次
			{
				Run();
				timer = 1.0f;
			}
		}
		//骑行中
		protected virtual void Run()
		{
			ComputeNextSlope();//计算下一个坡度相关数据
			if (isStart)
			{
				ticks++;
				Compute();//接受蓝牙设备数据计算
				characterAnimator.SetBool("IsRide", false);//初始化动画状态
				if (totalDistance <= mapData.TotalDistance)
				{
					//数据处理
					
					nextlatlong = Along(totalDistance);//下一个坐标
					nextPos = map.GeoToWorldPosition(nextlatlong);//下一个点
					nextPos.y += 0.3f;//提高y轴让人物站在地图上面
					prePos = transform.localPosition;//当前点
					//动画控制					
					if (distance > 0)
					{
						characterAnimator.SetBool("IsRide", true);//开始移动动画
						StartCoroutine(LookAtNextPos());//转向
						StartCoroutine(MoveTo());//移动
					}
				}
				else
				{
					totalDistance = mapData.TotalDistance;
					characterAnimator.SetBool("ReachEnd", true);//到达终点
					Task.Run(() => { Upload(); });//异步上传数据
					isStart = false;
					isQuit = true;
				}
            }
            else
            {
				characterAnimator.SetBool("IsRide", false);
			}
		}
		//计算功率 速度 当前骑行总里程（M）心率 踏频 等
		protected virtual void Compute()
		{
			//power = 900;//功率
			//speed = Helper.CalculateSpeed(elevation, 0, power, 65, 7);
			//distance = Math.Round(speed / 3600, 6);
			//totalDistance += distance;
		}
		//当前用户调用来上传骑行记录
		protected virtual void Upload()
		{
	
		}
		#endregion

		#region 工具类
		public int CurrentIndex;
		//当前距离所在的海拔/坡度/距离 下一个点的坡度以及剩余距离
		void ComputeNextSlope()
		{
			double sumDistance = 0;
			var pointList = mapData.List;
			int index = 0;
			for (int i = 0; i < pointList.Count; i++)
			{
				sumDistance += pointList[i].Distance;
				if (totalDistance * 1000 <= sumDistance)
				{
					index = i;
					break;
				}
			}
			//计算当前海拔和坡度
			elevation = pointList[index].Elevation;
			currentSlope = pointList[index].Grade;
			//计算下一个点的坡度和距离
			int nextIndex = index == pointList.Count - 1 ? index : index + 1;
			CurrentIndex = nextIndex;
			nextSlope = pointList[nextIndex].Grade;
			nextSlopeDistance = sumDistance - totalDistance * 1000;
			currentSlopeDistance = totalDistance * 1000 - (sumDistance - pointList[index].Distance);
		}
		//根据距离计算坐标
		Vector2d Along(double endDistance)
		{
			if (mapData != null)
			{
				var list = mapData.List.Select(p => new GeoJSON.Net.Geometry.GeographicPosition(p.Point[0], p.Point[1]));
				LineString lineString = new LineString(list);
				var pt1 = Turf.Along(lineString, endDistance);
				var ll = ((GeographicPosition)((GeoJSON.Net.Geometry.Point)pt1.Geometry).Coordinates);
				return new Vector2d(ll.Latitude, ll.Longitude);
			}
			return nextlatlong;
		}
		#endregion

		#region 人物移动与转向控制
		IEnumerator LookAtNextPos()
		{
			Quaternion neededRotation = Quaternion.LookRotation(transform.localPosition - nextPos);
			Quaternion thisRotation = character.transform.localRotation;

			float t = 0;
			while (t < 1.0f)
			{
				t += Time.deltaTime / 0.25f;
				var rotationValue = Quaternion.Slerp(thisRotation, neededRotation, t);
				character.transform.rotation = Quaternion.Euler(0, rotationValue.eulerAngles.y, 0);
				yield return null;
			}
		}

		//人物移动控制
		IEnumerator MoveTo()
		{
			//让人物移动分点增加动画的流畅度
			float t = 0;
			while (t < 1)
			{
				t += Time.deltaTime;
				Vector3 v = Vector3.Lerp(prePos, nextPos, t);
				transform.localPosition = v;
				//控制海拔图的位置

				yield return null;
			}
		}
		#endregion
	}
}