using UnityEngine;
using System.Collections;
using System;
using System.Collections.Generic;
using UnityEngine.EventSystems;

/// <summary>
/// 
/// </summary>
public class InputTouchContorler : MonoBehaviour
{

    /////// <summary>
    /////// 玩家的邮件系统发生变化
    /////// </summary>    
    ////public System.EventHandler OnChangeAnimationEvent;

    // Use this for initialization
    private void Start()
    {
        Input.multiTouchEnabled = true;
    }

    #region   点击更改动作/ 拖拽,移动显示位置/ 手指操作,缩放人物大小

    /// <summary>
    /// 
    /// </summary>
    private float touchMoveDistance = 800.0f;

    //距离最值
    private float MaxCameraSize = 15;
    /// <summary>
    /// 
    /// </summary>
    private float MinCameraSize = 5;

    /// <summary>
    /// 
    /// </summary>
    private float DefaultCameraSize = 13;

    /// <summary>
    /// 
    /// </summary>
    private ETouchState curTouch_NumOperateState = ETouchState.Null;
    /// <summary>
    /// 
    /// </summary>
    private float CurCameraSize = 13;

    /// <summary>
    /// 缩放的进度值
    /// </summary>                        
    private float lastMulityTouch_MoveMagnitude = 0.0f;


    //当前手势
    private Vector2 lastMulityTouch_MoveDir;

    /////// <summary>
    ///////   上次单点触控的操作类型
    /////// </summary>
    ////private string lastSingleTouch_PhaseName = string.Empty;

    /// <summary>
    /// 上次单点触控的鼠标位置
    /// </summary>
    private Vector2 lastSingleTouch_Position = Vector2.zero;

    /// <summary>
    /// 上次触控操作的 手指数量
    /// </summary>
    private ETouchState lastTouch_NumOperateState = ETouchState.Null;


    /// <summary>
    /// 是否开启缩放操作监控
    /// </summary>
    public bool IsEnterScaleHeroOperate = false;

    /// <summary>
    /// 是否开启拖拽操作监控
    /// </summary>
    public bool IsEnterDragHeroOperate = false;

    /// <summary>
    /// 
    /// </summary>
    private void Update()
    {
        if (!DragonBonesBGControler.Instance().CheckIsOpenTouchOperatehero())
        {
            return;
        }
        
        //多点触控
        if (Input.touchCount > 1)
        {
            ////lastSingleTouch_PhaseName = string.Empty;

            curTouch_NumOperateState = ETouchState.two;

            if (lastTouch_NumOperateState != curTouch_NumOperateState)
            {
                lastTouch_NumOperateState = curTouch_NumOperateState;
            }
            //停止拖拽 移动位置操作
            IsEnterScaleHeroOperate = true;

            ////两只手指都处于移动状态
            if (Input.touches[0].phase == TouchPhase.Moved || Input.touches[1].phase == TouchPhase.Moved)
            {
                ////计算移动方向
                Vector2 mDir = Input.touches[1].position - Input.touches[0].position;


                if (lastMulityTouch_MoveMagnitude < 0.1f)
                {
                    lastMulityTouch_MoveMagnitude = mDir.magnitude;
                    return;
                }

                float temp = 5.0f * (Mathf.Abs(lastMulityTouch_MoveMagnitude - mDir.magnitude) / touchMoveDistance);

                ////LogHelper.LogError("qqwang!!!! CurCameraSize::" + CurCameraSize + "  touchDis::" + mDir.magnitude + "lastDis::" + lastMulityTouch_MoveMagnitude + "/// chazhi::" + temp);
                ////根据向量的大小判断当前手势是放大还是缩小
                if (mDir.sqrMagnitude > lastMulityTouch_MoveDir.sqrMagnitude)
                {
                    ////CurCameraSize -= speed;
                    CurCameraSize -= temp;
                }
                else
                {
                    ////CurCameraSize += speed;  
                    CurCameraSize += temp;
                }

                ////更新当前手势
                lastMulityTouch_MoveDir = mDir;
                lastMulityTouch_MoveMagnitude = mDir.magnitude;

                ////限制距离
                CurCameraSize = Mathf.Clamp(CurCameraSize, MinCameraSize, MaxCameraSize);
            }
        }
        else if (Input.touchCount == 1)
        {
            lastMulityTouch_MoveDir = Vector2.zero;
            lastMulityTouch_MoveMagnitude = 0;
            IsEnterScaleHeroOperate = false;

            curTouch_NumOperateState = ETouchState.single;

            if (lastTouch_NumOperateState == ETouchState.two)
            {
                lastSingleTouch_Position = Input.touches[0].position;

                lastTouch_NumOperateState = ETouchState.single;
                return;
            }
            else
            {
                if (lastTouch_NumOperateState != curTouch_NumOperateState)
                {
                    lastTouch_NumOperateState = curTouch_NumOperateState;
                }
            }


            switch (Input.GetTouch(0).phase)
            {
                case TouchPhase.Began:
                    lastSingleTouch_Position = Input.touches[0].position;
                    ////lastSingleTouch_PhaseName = Input.GetTouch(0).phase.ToString();
                    break;

                case TouchPhase.Moved:
                case TouchPhase.Stationary:

                    Vector2 delta = Input.touches[0].position - lastSingleTouch_Position;

                    if (delta.sqrMagnitude > 0)
                    {
                        IsEnterDragHeroOperate = true;
                        ////lastSingleTouch_PhaseName = Input.GetTouch(0).phase.ToString();    
                        ////当前手势 是 拖拽操作    
                        ////LogHelper.LogError("qqwang!!!! Input.touchCount==1 》》》Pos:" + Input.touches[0].position + ">>> delta::" + delta.ToString());

                        lastSingleTouch_Position = Input.touches[0].position;
                        ////更改拖拽的位置
                        DragonBonesBGControler.Instance().OnChangeModelPosition(delta);
                    }

                    break;

                case TouchPhase.Ended:
                case TouchPhase.Canceled:
                    IsEnterDragHeroOperate = false;

                    ////if (lastSingleTouch_PhaseName == TouchPhase.Began.ToString())
                    ////{
                    ////if (OnChangeAnimationEvent != null)
                    ////{
                    ////    OnChangeAnimationEvent.Invoke(null, EventArgs.Empty);
                    ////}
                    ////}
                    break;
            }
        }
        else
        {
            lastMulityTouch_MoveMagnitude = 0;
            lastMulityTouch_MoveDir = Vector2.zero;
            lastSingleTouch_Position = Vector2.zero;

            ////lastSingleTouch_PhaseName = string.Empty;
            lastTouch_NumOperateState = ETouchState.Null;

            IsEnterDragHeroOperate = false;
            IsEnterScaleHeroOperate = false;
        }

        if (IsEnterScaleHeroOperate)
        {
            ////计算相机的角度和位置             
            //通知去更改相机的scale
            DragonBonesBGControler.Instance().OnChangeCameraSize(CurCameraSize);
        }
    }
    #endregion

    public void Reset()
    {
        lastMulityTouch_MoveMagnitude = 0;
        lastMulityTouch_MoveDir = Vector2.zero;
        lastSingleTouch_Position = Vector2.zero;

        ////lastSingleTouch_PhaseName = string.Empty;
        lastTouch_NumOperateState = ETouchState.Null;

        IsEnterScaleHeroOperate = false;
        IsEnterDragHeroOperate = false;

        CurCameraSize = DefaultCameraSize;
    }
}

public class ControlerWindowdData
{
    public string windowName;
    public bool controle;
}

public enum ETouchState
{
    single,
    two,
    Null
}