using System;
using System.Collections;
using System.Collections.Generic;
using ChivaXR;
using ChivaXR.Op;
using ChivaXR.VR;
using EPOOutline;
using UnityEngine;

public class ProcessState_VRCameraReset : MonoBehaviour, IProcessState
{
    public Transform mainCamera;

    [Header("自身位置")]
    public Transform localPoint;

    [Header("观察目标")]
    public Transform target;

    private Outlinable outLinable;
    private OpTrigger_PlaySoundElement opTriggerPlaySoundElement;
    public bool resetCameraPos = true;

    private void Start()
    {
        PB_OpData pbOpData = this.gameObject.GetComponent<PB_OpData>();
        OpTrigger_PlaySoundElement opTriggerPlaySoundElement =
            OperationManager.Instance.GetOpData(pbOpData.opData.operationDataName) as OpTrigger_PlaySoundElement;

        if (opTriggerPlaySoundElement != null)
        {
            opTriggerPlaySoundElement.OperationStatusChanged += OnOperationStatusChanged;
        }
    }

    public void EnterState(bool enterCurrent)
    {
        if (resetCameraPos) { InitVRCameraPos(localPoint); }

        if (target == null) return;

        if (enterCurrent)
        {
            target.gameObject.SetActive(true);
            outLinable = target.GetComponent<Outlinable>() == null
                ? target.gameObject.AddComponent<Outlinable>()
                : target.GetComponent<Outlinable>();

            OutLineManager.Instance.ResetOutLinableByType(outLinable, OutLineType.hint);

            outLinable.enabled = true;
        }else
        {
            if (outLinable != null)
            {
                outLinable.enabled = false;
            }
        }
  
    }

    public void ExitState()
    {
        if (target == null) return;
        if (outLinable)
        {
            outLinable.enabled = false;
        }

        target.gameObject.SetActive(false);
    }
    public void HalfQuit()
    {
    }


    public void OnOperationStatusChanged(object sender, OperationEventArgs e)
    {
        if (e.opData.OperationStatus == OperationDataStatus.InActive)
        {
            if (outLinable)
            {
                outLinable.enabled = true;
            }
        }
    }

    public void InitVRCameraPos(Transform initPoint)
    {
        RoamCameraController tmpContrl = mainCamera.GetComponent<RoamCameraController>();

        OperationStepDataInfo tmpInfo = DAL.Instance.Get<StepListProxy>().GetOperationStepDataInfoById(ProcessManagement.Instance.currentStepID);

        if (tmpInfo != null) 
        {
            if (string.IsNullOrEmpty(tmpInfo.position))
            {
                if (initPoint == null) return;

                RoamCameraController.Instance.SetCameraState(initPoint.position, initPoint.eulerAngles);
            }
            else
            {
                RoamCameraController.Instance.SetCameraState(LUtilitys.ParseVector3(tmpInfo.position), LUtilitys.ParseVector3(tmpInfo.rotation));
            }
        }
        else
        {
            if (initPoint == null) return;

            RoamCameraController.Instance.SetCameraState(initPoint.position, initPoint.eulerAngles);
        }
    }

    [ContextMenu("根据PB生产目标及观察位置")]
    public void ConfigTarget()
    {
        PB_OpData pbOpData = this.gameObject.GetComponent<PB_OpData>();
        //OpTrigger_ToolPack opTrigger_ToolPack =
        //OperationManager.Instance.GetOpData(pbOpData.opData.operationDataName) as OpTrigger_ToolPack;

        OpTrigger_ToolPack opTrigger_ToolPack =
   OperationManager.Instance.GetOpData(pbOpData.opData.operationDataName).gameObject.GetComponent<OpTrigger_ToolPack>();

        if (opTrigger_ToolPack != null)
        {
            if (opTrigger_ToolPack.targetObjs.Count > 0)
            {
                target = opTrigger_ToolPack.targetObjs[0].transform;
                if (localPoint == null)
                    localPoint = new GameObject("CameraPoint").transform;
                localPoint.transform.parent = this.transform;

                //localPoint.transform.position = opTrigger_ToolPack.targetObjs[0].transform.Find("HintPoint").position;
                //localPoint.LookAt(target, Vector3.up);

                Transform targetPoint = opTrigger_ToolPack.targetObjs[0].transform.GetComponentInChildren<MeshRenderer>().transform;

                Bounds bound = GetBounds(targetPoint);

                localPoint.transform.position = targetPoint.position +
                    (targetPoint.position - new Vector3(0, targetPoint.position.y - 0.3f, 0)).normalized
                    * (bound.size.magnitude < 0.8f ? 0.8f : bound.size.magnitude);

                Debug.Log(bound.center + "--" + bound.extents);
                localPoint.LookAt(targetPoint.position, Vector3.up);
            }
        }
        else
        {
            //DestroyImmediate(this.GetComponent<ProcessState_VRCameraReset>());
        }
    }

    /// <summary>
    /// 获取Transform及其子级的包围盒（MeshRenderer），若MeshRenderer包围盒长度为0，则获取BoxCollider包围盒
    /// </summary>
    /// <param name="transform"></param>
    /// <returns></returns>
    private static Bounds GetBounds(Transform transform)
    {
        Quaternion oldRotation = Quaternion.identity;
        bool boundsInitialized = false;
        //Bounds bounds = new Bounds(transform.position, Vector3.zero);
        Bounds bounds = new Bounds();

        Renderer[] renderers = transform.GetComponentsInChildren<Renderer>();
        foreach (Renderer renderer in renderers)
        {
            if (!boundsInitialized)
            {
                bounds = new Bounds(renderer.transform.position, Vector3.zero);
                boundsInitialized = true;
            }


            bounds.Encapsulate(renderer.bounds);
        }


        if (bounds.size.magnitude == 0)
        {
            BoxCollider[] colliders = transform.GetComponentsInChildren<BoxCollider>();
            foreach (BoxCollider collider in colliders)
            {
                if (!boundsInitialized)
                {
                    bounds = new Bounds(collider.transform.position, Vector3.zero);
                    boundsInitialized = true;
                }


                bounds.Encapsulate(collider.bounds);
            }
        }


        return bounds;
    }

    
}