using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using AX.MessageSystem;
using System;
using AX.InputSystem;

[Serializable]
public class DragData
{
    public string name;
    //public bool dragStart;
    public Vector3 postion;
}
public class ObjDrag : MonoBehaviour
{

    protected Vector3 prevPos = Vector3.zero;//进入拖动过程前（开始拖动）时鼠标在屏幕坐标系中的位置
    protected Vector3 mousePostion = Vector3.zero;
    protected bool dragStart;
    protected GameObject hitObj;
    protected Vector3 endPos;
    protected bool dragLerp = false;
    protected float timmer;
    protected float alltime;
    // Use this for initialization
    public virtual void Start()
    {
        MessageDispatcher.AddListener("ReplayEvent", ReplayEventDrag);
    }

    public virtual void ReplayEventDrag(IMessage obj)
    {
        var eventData = (EventData)obj.Data;
        if (eventData.eventType == RecordEventType.ObjDragExit)
        {
            DragData data = JsonUtility.FromJson<DragData>(eventData.json);
            if (gameObject.name == data.name)
            {
                endPos = data.postion;
                alltime = Vector3.Distance(transform.position, endPos) / 100 / ReplayManager.playSpeed;
                //Debug.Log(alltime);
                dragLerp = true;
            }
        }
        //DragData data;
        //if (eventData.eventType == RecordEventType.ObjDragEnter)
        //{
        //    data = JsonUtility.FromJson<DragData>(eventData.json);
        //    if (gameObject.name == data.name)
        //    {
        //        mousePostion = data.postion;
        //        dragStart = data.dragStart;
        //        hitObj = gameObject;
        //        var screenSpace = Camera.main.WorldToScreenPoint(transform.position);
        //        prevPos = new Vector3(mousePostion.x, mousePostion.y, screenSpace.z);
        //    }
        //}
        //else if (eventData.eventType == RecordEventType.ObjDraging)
        //{
        //    data = JsonUtility.FromJson<DragData>(eventData.json);
        //    if (gameObject.name == data.name)
        //    {
        //        mousePostion = data.postion;

        //        dragStart = data.dragStart;
        //    }
        //}
        //else if (eventData.eventType == RecordEventType.ObjDragExit)
        //{
        //    data = JsonUtility.FromJson<DragData>(eventData.json);
        //    if (gameObject.name == data.name)
        //    {
        //        prevPos = data.postion;

        //        dragStart = data.dragStart;
        //    }
        //}
    }
    public void AddRecordEventDrag(RecordEventType type, DragData data)
    {
        if (ReplaySetting.PlayStatus == PlayStatus.isEditor && RecordManager.Instance.recordStatus == RecordStatus.normal)
        {
            var eventData = new EventData();
            eventData.time = RecordManager.Instance.RecordTimer;
            eventData.cloneObjType = GetComponent<BaseGameObjInfo>().gameObjType;
            eventData.eventType = type;
            eventData.json = JsonUtility.ToJson(data);

            RecordManager.Instance.jsonData.eventDataList.Add(eventData);
        }
    }
    // Update is called once per frame
    public virtual void Update()
    {
        if (dragStart)
            ObjTranslate();
    }
    public virtual void LateUpdate()
    {
        if (dragLerp)
        {
            timmer += Time.deltaTime;
            if (transform.position != endPos)
            {
                transform.position = Vector3.Lerp(transform.position, endPos, timmer / alltime);
            }
            if (timmer >= alltime)
            {
                transform.position = endPos;
                dragLerp = false;
                timmer = 0;
            }
        }

    }
    public virtual void OnEnable()
    {
        MessageDispatcher.AddListener("OBJ_DRAG_ENTER_COMMAND", ObjDragEnterExecute);
        MessageDispatcher.AddListener("OBJ_DRAGING_COMMAND", ObjDragingExecute);
        MessageDispatcher.AddListener("OBJ_DRAG_EXIT_COMMAND", ObjDragExitExecute);
    }

    public virtual void OnDisable()
    {
        MessageDispatcher.RemoveListener("OBJ_DRAG_ENTER_COMMAND", ObjDragEnterExecute);
        MessageDispatcher.RemoveListener("OBJ_DRAGING_COMMAND", ObjDragingExecute);
        MessageDispatcher.RemoveListener("OBJ_DRAG_EXIT_COMMAND", ObjDragExitExecute);
    }

    public virtual void OnDestroy()
    {
        MessageDispatcher.RemoveListener("OBJ_DRAG_ENTER_COMMAND", ObjDragEnterExecute);
        MessageDispatcher.RemoveListener("OBJ_DRAGING_COMMAND", ObjDragingExecute);
        MessageDispatcher.RemoveListener("OBJ_DRAG_EXIT_COMMAND", ObjDragExitExecute);
        MessageDispatcher.RemoveListener("ReplayEvent", ReplayEventDrag);
    }

    public virtual void ObjDragEnterExecute(IMessage obj)
    {
        var data = (ObjDragCmdArgs)obj.Data;

        mousePostion = data.mousePosition;
        dragStart = data.dragStart;

        var screenSpace = Camera.main.WorldToScreenPoint(transform.position);
        prevPos = new Vector3(mousePostion.x, mousePostion.y, screenSpace.z);

        var gameObjID = (long)obj.Sender;
        hitObj = EntitiesManager.Instance.GetEntityByID(gameObjID);

        //DragData dragdata = new DragData()
        //{
        //    name = hitObj.name,
        //    dragStart = data.dragStart,
        //    postion = data.mousePosition
        //};
        //AddRecordEventDrag(RecordEventType.ObjDragEnter, dragdata);

    }

    public virtual void ObjDragingExecute(IMessage obj)
    {
        var data = (ObjDragCmdArgs)obj.Data;

        mousePostion = data.mousePosition;

        dragStart = data.dragStart;

        var gameObjID = (long)obj.Sender;
        hitObj = EntitiesManager.Instance.GetEntityByID(gameObjID);
        //DragData dragdata = new DragData()
        //{
        //    name = hitObj.name,
        //    dragStart = data.dragStart,
        //    postion = data.mousePosition
        //};
        //AddRecordEventDrag(RecordEventType.ObjDraging, dragdata);
    }

    public virtual void ObjDragExitExecute(IMessage obj)
    {
        var data = (ObjDragCmdArgs)obj.Data;

        prevPos = data.mousePosition;

        dragStart = data.dragStart;

        var gameObjID = (long)obj.Sender;
        hitObj = EntitiesManager.Instance.GetEntityByID(gameObjID);
        //DragData dragdata = new DragData()
        //{
        //    name = hitObj.name,
        //    dragStart = data.dragStart,
        //    postion = data.mousePosition
        //};
        //AddRecordEventDrag(RecordEventType.ObjDragExit, dragdata);
        DragData dragdata = new DragData()
        {
            name = gameObject.name,
            postion = transform.position
        };
        AddRecordEventDrag(RecordEventType.ObjDragExit, dragdata);
    }

    /// <summary>
    /// 拖拽克隆对象平面移动
    /// </summary>
    public virtual void ObjTranslate()
    {
        if (gameObject == hitObj)
        {
            if (mousePostion.x > Screen.width || mousePostion.y > Screen.height)
            {
                return;
            }
            var screenSpace = Camera.main.WorldToScreenPoint(transform.position);

            var currPos = new Vector3(mousePostion.x, mousePostion.y, screenSpace.z);

            var prev = Camera.main.ScreenToWorldPoint(prevPos);
            var curr = Camera.main.ScreenToWorldPoint(currPos);

            var offset = curr - prev;

            offset.y = 0;

            transform.position += offset;

            prevPos = currPos;
        }
    }
}