using System;
using System.Collections;
using System.Collections.Generic;
using DG.Tweening;
using UnityEngine;

public class AutoGuiderEx : MonoBehaviour
{
    public Transform tranGuidePositions;

    public string GuiderAudioPath = "Guide/";

    int index = -1;
    Coroutine corAnim1;
    Coroutine corAnim2;

    bool currentExMoveCompleted = true;
    bool currentExRotateCompleted = true;

    List<GuidePoint> lstGuidePoint;
    void Start()
    {
        #region
        lstGuidePoint = new List<GuidePoint>();
        for (int i = 0; i < tranGuidePositions.childCount; i++)
        {
            lstGuidePoint.Add(tranGuidePositions.GetChild(i).GetComponent<GuideData>().GPoint);
        }
        // Debug.Log(JsonTools.ListToJson(lstGuidePoint));
        #endregion

        //StartCoroutine(DataLoader<GuidePoint>.LoadDataList("GuidePoints.json", 
        //    delegate() { lstGuidePoint = DataLoader<GuidePoint>.DataList; }));
    }

    GuidePoint currentPoint;

    public void Navigate()
    {
        if (currentExMoveCompleted && currentExRotateCompleted)
        {
            BaseController.IsAutoNavigating = true;
            currentExMoveCompleted = false;
            currentExRotateCompleted = false;

            index++;
            if (index == lstGuidePoint.Count)
            {
                BaseController.IsAutoNavigating = false;
                BaseController.CanControl = true;
                index = -1;
                return;
            }

            currentPoint = lstGuidePoint[index];

            //Debug.Log(index + "开始");

            if (!string.IsNullOrEmpty(currentPoint.MoveAudioName))
            {
                AudioManager.Instance.PlayAudio(GuiderAudioPath + currentPoint.MoveAudioName);
            }

            if (corAnim1 != null)
                StopCoroutine(corAnim1);
            if (corAnim2 != null)
                StopCoroutine(corAnim2);

            Vector3 toPosition = new Vector3(
                        currentPoint.Position.x,
                        CommonData.MainCamera.transform.position.y,
                        currentPoint.Position.z);
            float distance = Vector3.Distance(CommonData.MainCamera.transform.position, toPosition);
            //Debug.Log("距离："+distance);
            corAnim1 = StartCoroutine(
                CommonData.MainCamera.transform.ExMove(
                    toPosition,
                    distance / currentPoint.MoveTime,
                    delegate ()
                    {
                        currentExMoveCompleted = true;
                        //Debug.Log(index + "位置移动结束" + Time.time);                        
                        NavigateCompleted();
                    },
                    null
                )
            );
            float angle = Vector3.Distance(CommonData.MainCamera.transform.localRotation.eulerAngles, currentPoint.Rotation);
            //Debug.Log("角度："+angle);
            Vector3 vAngle = currentPoint.Rotation;
            if (currentPoint.Rotation.y < 0)
            {
                vAngle = new Vector3(vAngle.x, vAngle.y + 360, vAngle.z);
            }
            corAnim2 = StartCoroutine(
                 CommonData.MainCamera.transform.ExRotate(
                    vAngle, //currentPoint.Rotation,
                    Mathf.Abs( angle )/ currentPoint.MoveTime,
                    delegate ()
                    {
                        currentExRotateCompleted = true;
                        //Debug.Log(index + "旋转移动结束" + Time.time);
                        NavigateCompleted();
                    },
                    null
                 )
            );
        }
    }

    private void NavigateCompleted()
    {
        if (currentExMoveCompleted && currentExRotateCompleted && BaseController.IsAutoNavigating)
        {
            if (!string.IsNullOrEmpty(currentPoint.StopAudioName))
            {
                AudioManager.Instance.PlayAudio(GuiderAudioPath + currentPoint.StopAudioName);
            }
            Invoke("Navigate", currentPoint.StopTime);
        }
    }

    public void StopNavigate()
    {
        AudioManager.Instance.StopAudio(); 
        
        if (corAnim1 != null)
            StopCoroutine(corAnim1);
        if (corAnim2 != null)
            StopCoroutine(corAnim2);

        BaseController.IsAutoNavigating = false;
        currentExMoveCompleted = true;
        currentExRotateCompleted = true;
    }
}

static class TransformExtender
{
    /// <summary>
    /// 当前物体以指定的速度匀速移动至目标点
    /// </summary>
    /// <param name="self"></param>
    /// <param name="target"></param>
    /// <param name="speed"></param>
    /// <param name="onComplete"></param>
    /// <param name="onUpdate"></param>
    /// <returns></returns>
    public static IEnumerator ExMove(this Transform self, Vector3 target, float speed, Action onComplete = null, Action onUpdate = null)
    {
        while (self.position != target)
        {
            self.position = Vector3.MoveTowards(
                self.position, 
                target, 
                speed * Time.deltaTime
                );
            onUpdate?.Invoke();

            yield return 0;
        }
        onComplete?.Invoke();
    }

    /// <summary>
    /// 当前物体以指定的速度匀速移动至目标点
    /// </summary>
    /// <param name="self"></param>
    /// <param name="target"></param>
    /// <param name="speed"></param>
    /// <param name="onComplete"></param>
    /// <param name="onUpdate"></param>
    /// <returns></returns>
    public static IEnumerator ExRotate(this Transform self, Vector3 target, float speed, Action onComplete = null, Action onUpdate = null)
    {
        while (self.eulerAngles != target)
        {
            self.localRotation =
                Quaternion.RotateTowards(
                    self.localRotation,
                    Quaternion.Euler(target),
                    speed * Time.deltaTime
                );

            //Debug.Log(self.localRotation.eulerAngles);
            onUpdate?.Invoke();
            yield return 0;
        }
        onComplete?.Invoke();
    }
}