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

public class CarMoveManager : MonoBehaviour
{
    public PowerMessage PowerMsg;
    public GameObject[] RoadPoints;//移动拐点
    public GameObject Car;
    private float PathLength;
    private bool CanMove;
    private float Speed;
    private int index = 1;
    //private float disPrevCan;
    //private float disPrevPointCan;
    //private float disTotal;

    private float indexPath;
    private float movedDis;
    private float time;
    private Vector2 startPos;

    //private List<FireCarEngine> MyList;
    private List<KeyValuePair<FireCarEngine, int>> MyList;

    void Awake()
    {
        //读取路径长度作为总出警总距离
        for (int i = 0; i < RoadPoints.Length - 1; i++)
        {
            //PathLength += Vector2.Distance(RoadPoints[i].transform.position, RoadPoints[i + 1].transform.position);
            PathLength += Vector2.Distance(RoadPoints[i].GetComponent<RectTransform>().anchoredPosition, 
                RoadPoints[i + 1].GetComponent<RectTransform>().anchoredPosition);
        }
    }
    private void ShowNowMessage()
    {
        //List<FireCarEngine> TestList = TestData();
        //PowerMsg.ShowMessage(MyList, (PathLength - disTotal).ToString("#.##") + "Km",
        //    DateTime.Now.ToString("yyyy:MM:dd HH:mm:ss"));

        float tempDis = 0;//当前段路径已移动多少距离
        
        tempDis = Vector2.Distance(Car.GetComponent<RectTransform>().anchoredPosition , 
            RoadPoints[index - 1].GetComponent<RectTransform>().anchoredPosition);

        float currentDis = movedDis + tempDis;

        PowerMsg.ShowMessage(MyList, (PathLength - currentDis).ToString("#.##") + "Km",
            DateTime.Now.ToString("yyyy:MM:dd HH:mm:ss"));
    }

    //控制地图上车标志移动的方法
    public void MoveCar(float NeedTime, List<KeyValuePair<FireCarEngine, int>> DataList)
    {
        Speed = PathLength / NeedTime;
        StartCoroutine(WaitTheSet());
        MyList = DataList;
        Car.GetComponent<Button>().onClick.AddListener(ShowNowMessage);
    }

    private IEnumerator WaitTheSet()
    {
        yield return new WaitForSeconds(2f);
        CanMove = true;
    }

    // Update is called once per frame
    void Update()
    {
        if (CanMove)
        {
            if (index < RoadPoints.Length)
            {
                //Car.transform.Translate((RoadPoints[index].transform.position - Car.transform.position).normalized * Time.deltaTime * Speed);

                //disPrevPointCan = Vector2.Distance(Car.transform.position, RoadPoints[index - 1].transform.position);
                //if (Vector3.Distance(Car.transform.position, RoadPoints[index].transform.position) <= 0.2)
                //{
                //    index++;
                //    disPrevCan += disPrevPointCan;
                //}
                //disTotal = disPrevCan + disPrevPointCan;

                indexPath = Vector2.Distance(RoadPoints[index].GetComponent<RectTransform>().anchoredPosition,
                    RoadPoints[index - 1].GetComponent<RectTransform>().anchoredPosition);

                startPos = RoadPoints[index - 1].GetComponent<RectTransform>().anchoredPosition;
                time += Time.deltaTime;

                if (RoadPoints[index].GetComponent<RectTransform>().anchoredPosition 
                    != Car.GetComponent<RectTransform>().anchoredPosition)
                {
                    Car.GetComponent<RectTransform>().anchoredPosition = Vector2.Lerp(startPos,
                        RoadPoints[index].GetComponent<RectTransform>().anchoredPosition,
                        time / (indexPath / Speed));
                }

                if (time >= (indexPath / Speed))
                {
                    Car.GetComponent<RectTransform>().anchoredPosition = RoadPoints[index].GetComponent<RectTransform>().anchoredPosition;

                    index++;
                    time = 0;
                    movedDis += indexPath;
                }
            }
            else
            {
                movedDis = PathLength;
                Speed = 0;
                CanMove = false;
            }
        }
    }
}