using FairyGUI;
using System;
using System.Collections;
using System.Collections.Generic;
using UI.DressUp;
using UnityEngine;
using UnityEngine.EventSystems;

namespace GFGGame
{
    public class PhotographView : BaseView
    {
        private UI_PhotographUI _ui;
        private GameObject _scenePrefab;
        private GameObject _sceneObject;
        private DressUpObjDataCache equipDataCache;

        private const string MOVE = "MOVE";
        private const string SCALE = "SCALE";
        private const string ROTATION = "ROTATION";
        private const float MaxScale = 2;
        private const float MinScale = 0.1f;

        private GameObject bodyParent;
        private GameObject bgParent;
        private GameObject npcParent;
        private GameObject borderParent;
        private GameObject sceneParent;

        private List<int> _listData = null;//当前选择的资源数据
        private List<int> _equipRoleData = new List<int>();//当前穿戴的角色数据
        private Dictionary<int, List<int>> _equipSceneData = new Dictionary<int, List<int>>();//当前穿戴的场景数据
        private Dictionary<GameObject, float> _equipDistance = new Dictionary<GameObject, float>();

        private GameObject hitGameObj;//当前选中的物体（单指拖动，双指缩放旋转）
        private GameObject memoryHitGameObj;//当前选中的物体（单指缩放旋转）

        private Vector3 distance = Vector3.zero;//点击位置和点击物体原点的距离，用于
        private Vector2 lastPos = Vector2.zero;//上一次移动后从物体中心到鼠标位置的方向

        // private float _startDistance;//从物体中心到缩放按钮的距离


        private SwipeGesture swipeGesture;
        private PinchGesture pinchGesture;
        private RotationGesture rotationGesture;


        private bool isTwoTouchPoint = false;
        private int maxLayer = int.MinValue;//最上层的层级数

        protected override void OnInit()
        {
            base.OnInit();
            packageName = UI_PhotographUI.PACKAGE_NAME;
            _ui = UI_PhotographUI.Create();
            viewCom = _ui.target;
            isfullScreen = true;

            _ui.m_btnBg.onClick.Add(OnClickBtnBg);
            _ui.m_btnChoose.onClick.Add(OnClickBtnChoose);
            _ui.m_btnBack.onClick.Add(OnClickBtnBack);
            _ui.m_btnPhotograph.onClick.Add(OnClickBtnPhotograph);

            _ui.m_ComSelectRes.m_list.itemRenderer = RenderListItem;
            _ui.m_ComSelectRes.m_list.onClickItem.Add(OnListItemClick);
            _ui.m_ComSelectRes.m_comBtnTab.m_c1.onChanged.Add(OnContorllerChanged);

            _scenePrefab = GFGAsset.Load<GameObject>(ResPathUtil.GetPrefabPath("ScenePhotograph"));

            _ui.target.onTouchBegin.Add(OnTouchUIBegin);
            _ui.target.onTouchMove.Add(OnTouchUIMove);
            _ui.target.onTouchEnd.Add(OnTouchUIEnd);

            _ui.m_comSelectBox.m_btnSize.onTouchBegin.Add(OnTouchBtnSizeBegin);
            _ui.m_comSelectBox.m_btnSize.onTouchMove.Add(OnTouchBtnSizeMove);
            _ui.m_comSelectBox.m_btnSize.onTouchEnd.Add(OnTouchBtnSizeEnd);

            _ui.m_comSelectBox.m_btnFlip.onTouchBegin.Add(OnTouchBtnFlipBegin);
            _ui.m_comSelectBox.m_btnFlip.onTouchEnd.Add(OnTouchBtnFlipEnd);

            _ui.m_comSelectBox.m_btnDelete.onTouchBegin.Add(OnTouchBtnDeleteBegin);
            _ui.m_comSelectBox.m_btnDelete.onTouchEnd.Add(OnTouchBtnDeleteEnd);

        }

        protected override void OnShown()
        {
            base.OnShown();
            Input.multiTouchEnabled = true;
            equipDataCache = EquipDataCache.cacher;

            if (_sceneObject == null)
            {
                _sceneObject = GameObject.Instantiate(_scenePrefab);
                EquipDataCache.cacher.setSceneObj(_sceneObject);
                bgParent = _sceneObject.transform.Find("Bg").gameObject;
                bodyParent = _sceneObject.transform.Find("Scene/Role").gameObject;
                sceneParent = _sceneObject.transform.Find("Scene").gameObject;
                npcParent = _sceneObject.transform.Find("Scene/Npc").gameObject;
                borderParent = _sceneObject.transform.Find("Border").gameObject;
            }

            pinchGesture = new PinchGesture(_ui.target);
            pinchGesture.onAction.Add(OnPinch);
            rotationGesture = new RotationGesture(_ui.target);
            rotationGesture.onAction.Add(OnRotate);

            _ui.m_ComSelectRes.m_comBtnTab.m_c1.selectedIndex = 0;
            OnClickBtnChoose();
            RefreshList(EnumPhotographType.BG);
            DisposeEquipData();

            // SceneController.UpdatePhotographBgOrNpcOrBorder(_sceneObject, EnumPhotographType.BG, equipDataCache.bgId);

            UpdateBg(ItemCfgArray.Instance.GetCfg(equipDataCache.bgId));
            UpdateBody();
            UpdateScene();

        }
        /************************************************************UI界面*********************************************************/
        private void OnContorllerChanged(EventContext context)
        {
            int index = _ui.m_ComSelectRes.m_comBtnTab.m_c1.selectedIndex;
            RefreshList((EnumPhotographType)index);
        }
        private void RefreshList(EnumPhotographType index)
        {
            _ui.m_ComSelectRes.m_list.numItems = 0;

            switch (index)
            {
                case EnumPhotographType.BG:
                    _listData = PhotographDataManager.Instance.listBgData;
                    break;
                case EnumPhotographType.NPC:
                    _listData = PhotographDataManager.Instance.listNpcData;
                    break;
                case EnumPhotographType.SCENE:
                    _listData = PhotographDataManager.Instance.listSceneData;
                    break;
                case EnumPhotographType.BORDER:
                    _listData = PhotographDataManager.Instance.listBorderData;
                    break;
                case EnumPhotographType.EFFECT:
                    _listData = PhotographDataManager.Instance.listEffectData;
                    break;
            }
            _ui.m_ComSelectRes.m_list.numItems = _listData.Count;
        }
        private void RenderListItem(int index, GObject obj)
        {
            ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(_listData[index]);
            string resPath = ResPathUtil.GetIconPath(itemCfg);

            UI_ListItem item = UI_ListItem.Proxy(obj);
            item.target.data = _listData[index];
            item.m_loaIcon.url = resPath;
            item.m_txtName.text = itemCfg.name;
        }
        private void OnListItemClick(EventContext context)
        {
            int itemID = (int)((context.data as GObject).data);
            ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(itemID);

            EnumPhotographType type = (EnumPhotographType)_ui.m_ComSelectRes.m_comBtnTab.m_c1.selectedIndex;

            switch (type)
            {
                case EnumPhotographType.BG:
                    UpdateBg(itemCfg);
                    break;

                case EnumPhotographType.BORDER:
                    if (_listData.IndexOf(itemID) == 0)
                    {
                        Transform tf = _sceneObject.transform.Find("Border/BorderRes");
                        SpriteRenderer spr = tf.GetComponent<SpriteRenderer>();
                        if (spr != null)
                        {
                            GameObject.Destroy(spr);
                        }
                        return;
                    }
                    UpdateBorder(itemCfg);
                    break;

                case EnumPhotographType.NPC:

                    UpdateNpc(itemCfg);
                    break;

                case EnumPhotographType.SCENE:

                    AddSceneItem(itemCfg, false, maxLayer);
                    break;
                case EnumPhotographType.EFFECT:

                    break;
            }
        }
        /************************************************************场景*********************************************************/

        private void OnTouchUIBegin(EventContext context)
        {
            context.CaptureTouch();

            if (_ui.m_ComSelectRes.target.visible == true) return;//添加道具不监听场景点击
            if (Stage.inst.touchCount > 1 && hitGameObj != null || Stage.inst.touchCount == 1 && context.inputEvent.touchId != 0) return;//两根手指&&两指不是同时按下||一根手指但属于中途换指
            if (PhotographDataManager.Instance.IsTouchUI(this.viewCom)) return;

            RaycastHit2D[] hit2Ds = Physics2D.RaycastAll(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero);
            if (hit2Ds.Length > 0)
            {
                maxLayer++;
                hitGameObj = SceneController.GetFirstHitObj(hit2Ds);

                _ui.m_comSelectBox.m_btnDelete.visible = true;
                if (hitGameObj.name == "Body")//主角不可删除
                {
                    _ui.m_comSelectBox.m_btnDelete.visible = false;
                }
                _ui.m_comSelectBox.target.visible = false;
                if (hitGameObj.name != "BgRes")//背景不可改动层级
                {
                    hitGameObj.GetComponent<SpriteRenderer>().sortingOrder = maxLayer;
                    hitGameObj = hitGameObj.transform.parent.gameObject;
                    _ui.m_comSelectBox.target.visible = true;

                }

                distance = Input.mousePosition - Camera.main.WorldToScreenPoint(hitGameObj.transform.position);

                lastPos = Vector2.zero;
                _ui.m_comSelectBox.target.rotation = -hitGameObj.transform.eulerAngles.z;
                _ui.m_comSelectBox.target.size = SceneController.GetGameObjectSize(hitGameObj);

                memoryHitGameObj = hitGameObj;

                ControllerSelectBoxPos();
            }
        }
        private void OnTouchUIMove(EventContext context)
        {
            if (hitGameObj == null) return;//未选中任何物体
            if (Stage.inst.touchCount > 1) return; //只监听1根手指
            if (PhotographDataManager.Instance.IsTouchUI(this.viewCom)) return;

            Debug.Log("拖动");
            ControllerObjectPos();
            ControllerSelectBoxPos();

        }
        private void OnTouchUIEnd(EventContext context)
        {
            if (Stage.inst.touchCount > 1 || context.inputEvent.touchId != 0) return; //只监听1根手指
            hitGameObj = null;
        }


        //选中物体的位置
        private void ControllerObjectPos()
        {
            hitGameObj.transform.position = Camera.main.ScreenToWorldPoint(Input.mousePosition - distance);
            if (hitGameObj.name == "BgRes")
            {
                Vector2 size = hitGameObj.GetComponent<SpriteRenderer>().size;
                Vector2 uiSize = _ui.target.size;
                float deviationWidth = (size.x - uiSize.x / 100) / 2;
                float deviationHeigh = (size.y - uiSize.y / 100) / 2;
                Vector2 pos = hitGameObj.transform.position;
                if (pos.x <= -deviationWidth)
                {
                    hitGameObj.transform.position = new Vector2(-deviationWidth, hitGameObj.transform.position.y);
                }
                if (pos.x >= deviationWidth)
                {
                    hitGameObj.transform.position = new Vector2(deviationWidth, hitGameObj.transform.position.y);
                }
                if (pos.y <= -deviationHeigh)
                {
                    hitGameObj.transform.position = new Vector2(hitGameObj.transform.position.x, -deviationHeigh);
                }
                if (pos.y >= deviationHeigh)
                {
                    hitGameObj.transform.position = new Vector2(hitGameObj.transform.position.x, deviationHeigh);
                }

            }
        }
        //选中框的位置
        private void ControllerSelectBoxPos()
        {

            Vector2 objScreenPos = Camera.main.WorldToScreenPoint(hitGameObj.transform.position);
            Vector2 localPos = this.viewCom.GlobalToLocal(new Vector2(objScreenPos.x, (Screen.height - objScreenPos.y)));
            _ui.m_comSelectBox.target.position = localPos;
        }



        private void OnTouchBtnSizeBegin(EventContext context)
        {

            InputEvent inputEvent = (InputEvent)context.data;
            Vector2 screenPos = this.viewCom.GlobalToLocal(_ui.m_comSelectBox.m_btnSize.LocalToGlobal(Vector2.zero));
            Vector2 pt = new Vector2(screenPos.x, screenPos.y);
            Vector2 pt2 = new Vector2(_ui.m_comSelectBox.target.x, _ui.m_comSelectBox.target.y);

            if (!_equipDistance.ContainsKey(memoryHitGameObj))
            {
                float distance = Vector2.Distance(pt, pt2) / memoryHitGameObj.transform.localScale.x;
                _equipDistance.Add(memoryHitGameObj, distance);
            }

        }
        private void OnTouchBtnSizeMove(EventContext context)
        {
            if (memoryHitGameObj == null) return;
            InputEvent inputEvent = (InputEvent)context.data;
            Vector2 pt1 = this.viewCom.GlobalToLocal(new Vector2(inputEvent.x, inputEvent.y));
            Vector2 pt2 = new Vector2(_ui.m_comSelectBox.target.x, _ui.m_comSelectBox.target.y);
            Vector2 curPos = pt1 - pt2;

            float angle = Vector3.Angle(lastPos, curPos); //求出两向量之间的夹角 
            Vector3 normal = Vector3.Cross(lastPos, curPos);//叉乘求出法线向量 
            angle *= Mathf.Sign(Vector3.Dot(normal, Vector3.forward));  //Mathf.Sign()求符号，Vector3.Dot()求方向，求法线向量与物体上方向向量点乘，结果为1或-1，修正旋转方向 
            lastPos = curPos;
            ControllerRotate(angle, memoryHitGameObj);


            float dist = Vector2.Distance(pt1, pt2);
            float ss = dist / _equipDistance[memoryHitGameObj];
            float newValue = Mathf.Clamp(ss, 0.1f, 2);
            ControllerScale(newValue, memoryHitGameObj);

        }
        private void OnTouchBtnSizeEnd(EventContext context)
        {
            lastPos = Vector2.zero;
        }



        //双指缩放
        private void OnPinch(EventContext context)
        {

            if (hitGameObj == null) return;
            if (hitGameObj.name == "BgRes") return;//背景不可以缩放、旋转

            GTween.Kill(hitGameObj);
            PinchGesture gesture = (PinchGesture)context.sender;
            float newValue = Mathf.Clamp(hitGameObj.transform.localScale.x + gesture.delta, 0.3f, 2);
            Debug.Log("双指缩放:" + newValue);

            ControllerScale(newValue, hitGameObj);
        }
        private void OnRotate(EventContext context)
        {
            Debug.Log("双指旋转hitGameObj:" + hitGameObj);
            if (hitGameObj == null) return;
            Debug.Log("双指旋转name:" + hitGameObj.name);
            if (hitGameObj.name == "BgRes") return;//背景不可以缩放、旋转
            // isTwoTouchPoint = true;

            GTween.Kill(hitGameObj.transform);
            RotationGesture gesture = (RotationGesture)context.sender;
            Debug.Log("双指旋转:" + gesture.delta);
            ControllerRotate(gesture.delta, hitGameObj);
        }


        private void ControllerScale(float value, GameObject gameObject)
        {
            if (value > MaxScale || value < MinScale) return;
            gameObject.transform.localScale = new Vector3(value, value, value);
            Vector2 size = SceneController.GetGameObjectSize(gameObject);
            _ui.m_comSelectBox.target.SetSize(size.x, size.y);
        }
        private void ControllerRotate(float value, GameObject gameObject)
        {
            gameObject.transform.Rotate(Vector3.forward, -value, Space.World);
            _ui.m_comSelectBox.target.rotation += value;
        }


        private void UpdateBg(ItemCfg itemCfg)
        {
            Transform tf = _sceneObject.transform.Find("Bg/BgRes");
            string resPath = ResPathUtil.GetDressUpPath(itemCfg.res, ItemUtil.GetItemResExt(itemCfg.itemType, itemCfg.subType));
            SceneController.UpdatePhotographBgOrNpcOrBorder(_sceneObject, itemCfg == null ? equipDataCache.bgId : itemCfg.id, tf, resPath);
            SpriteRenderer spr = tf.GetComponent<SpriteRenderer>();
            spr.sortingOrder = ItemTypeCfgArray.Instance.GetCfg(ConstDressUpItemType.BEI_JING).defaultLayer;
            SceneController.PhotographAddCollider(tf.gameObject);
        }
        //主角
        private void UpdateBody()
        {
            SceneController.UpdatePhotographBody(_equipRoleData.ToArray(), _sceneObject, false, null, false, bodyParent);
            int layer = _sceneObject.transform.Find("Scene/Role/Body").GetComponent<SpriteRenderer>().sortingOrder;
            maxLayer = layer < maxLayer ? maxLayer : layer;
        }
        //添加初始场景道具
        private void UpdateScene()
        {
            ICollection keys = _equipSceneData.Keys;
            foreach (int key in keys)
            {
                for (int i = 0; i < _equipSceneData[key].Count; i++)
                {
                    ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(key);
                    int defaultLayer = ItemTypeCfgArray.Instance.GetCfg(itemCfg.subType).defaultLayer;
                    AddSceneItem(itemCfg, true, defaultLayer);
                }
            }
        }
        private void UpdateNpc(ItemCfg itemCfg)
        {
            maxLayer++;
            Transform tf = _sceneObject.transform.Find("Scene/Npc/NpcRes");
            string resPath = ResPathUtil.GetNpcPicFPath(itemCfg.res);
            SceneController.UpdatePhotographBgOrNpcOrBorder(_sceneObject, itemCfg.id, tf, resPath);
            SpriteRenderer spr = tf.GetComponent<SpriteRenderer>();
            spr.sortingOrder = maxLayer;
            tf.localPosition = new Vector2(-spr.bounds.center.x, -spr.bounds.center.y);
            SceneController.PhotographAddCollider(tf.gameObject);
        }
        private void UpdateBorder(ItemCfg itemCfg)
        {
            Transform tf = _sceneObject.transform.Find("Border/BorderRes");
            string resPath = ResPathUtil.GetPhotographFPath(itemCfg.res, ItemUtil.GetItemResExt(itemCfg.itemType, itemCfg.subType));
            SceneController.UpdatePhotographBgOrNpcOrBorder(_sceneObject, itemCfg.id, tf, resPath);
            SpriteRenderer spr = tf.GetComponent<SpriteRenderer>();
            spr.sortingOrder = 1000;
        }
        private void UpdateEffect()
        {

        }


        private void AddSceneItem(ItemCfg itemCfg, bool isDefaultLayer, int layer)
        {

            maxLayer = layer < maxLayer ? maxLayer : layer;
            if (!isDefaultLayer)
            {
                maxLayer = layer + 1;
                layer = maxLayer;
            }
            int index = 0;

            GameObject parentGameObj;
            if (itemCfg.resLayer1 > 0)
            {
                if (!isDefaultLayer)
                {
                    PhotographDataManager.Instance.AddEquipItem(_equipSceneData, itemCfg.id, out _equipSceneData);
                }
                index = _equipSceneData[itemCfg.id].Count - 1;

                parentGameObj = new GameObject(string.Format("{0}_{1}_{2}", itemCfg.id, index, 0));
                SceneController.AddItemToScene(_sceneObject, parentGameObj, itemCfg.id, itemCfg.resLayer1);
                SpriteRenderer spr = parentGameObj.transform.GetChild(0).GetComponent<SpriteRenderer>();
                spr.sortingOrder = layer;

            }
            if (itemCfg.resLayer2 > 0)
            {
                if (!isDefaultLayer)
                {
                    PhotographDataManager.Instance.AddEquipItem(_equipSceneData, itemCfg.id, out _equipSceneData);
                }
                index = _equipSceneData[itemCfg.id].Count - 1;
                parentGameObj = new GameObject(string.Format("{0}_{1}_{2}", itemCfg.id, index, 1));
                SceneController.AddItemToScene(_sceneObject, parentGameObj, itemCfg.id, itemCfg.resLayer2);
                SpriteRenderer spr = parentGameObj.transform.GetChild(0).GetComponent<SpriteRenderer>();
                spr.sortingOrder = layer;
            }
        }




        private void DisposeEquipData()
        {
            for (int i = 0; i < equipDataCache.equipDatas.Length; i++)
            {
                ItemCfg itemCfg = ItemCfgArray.Instance.GetCfg(equipDataCache.equipDatas[i]);
                if (itemCfg.subType == ConstDressUpItemType.QIAN_JING || itemCfg.subType == ConstDressUpItemType.BEI_SHI || itemCfg.subType == ConstDressUpItemType.HUAN_JING)
                {
                    PhotographDataManager.Instance.AddEquipItem(_equipSceneData, itemCfg.id, out _equipSceneData);
                }
                else
                {
                    _equipRoleData.Add(equipDataCache.equipDatas[i]);
                }
            }

        }

        private void OnClickBtnBg()
        {
            _ui.m_ComSelectRes.target.visible = false;
        }
        private void OnTouchBtnFlipBegin()//翻转
        {
            Transform transform = memoryHitGameObj.transform;
            for (int i = 0; i < transform.childCount; i++)
            {
                transform.GetChild(i).Rotate(Vector3.up, 180, Space.Self);
            }
        }
        private void OnTouchBtnFlipEnd()
        {

        }

        private void OnTouchBtnDeleteBegin()//删除
        {
            if (memoryHitGameObj.transform.gameObject == bodyParent)
            {
                return;
            }
            else if (memoryHitGameObj.transform.gameObject == npcParent)
            {
                SpriteRenderer spriteRenderer = memoryHitGameObj.transform.GetChild(0).GetComponent<SpriteRenderer>();
                if (spriteRenderer != null)
                {
                    GameObject.Destroy(spriteRenderer);
                }
            }
            else
            {
                GameObject.DestroyImmediate(memoryHitGameObj);
            }
            _ui.m_comSelectBox.target.visible = false;

        }
        private void OnTouchBtnDeleteEnd()
        {

        }
        private void OnClickBtnChoose()
        {
            _ui.m_ComSelectRes.target.visible = true;
            _ui.m_comSelectBox.target.visible = false;
            hitGameObj = null;
            memoryHitGameObj = null;
        }
        private void OnClickBtnPhotograph()
        {
            _ui.target.visible = false;
            Timers.inst.StartCoroutine(ScreenShotTex());// ();
        }
        private IEnumerator ScreenShotTex()
        {
            _ui.target.visible = false;
            yield return new WaitForEndOfFrame();

            Rect rect = new Rect(0, 0, UnityEngine.Screen.width, UnityEngine.Screen.height);
            Texture2D tex = new Texture2D((int)rect.width, (int)rect.height, TextureFormat.ARGB32, false);//新建一个Texture2D对象
            tex.ReadPixels(rect, 0, 0);//读取像素，屏幕左下角为0点
            tex.Apply();//保存像素信息

            ViewManager.Show<PhotographSaveView>(tex);
            _ui.target.visible = true;
        }

        private void OnClickBtnBack()
        {
            this.Hide();
            // ViewManager.Show(ViewName.DRESS_UP_VIEW);
            EventAgent.DispatchEvent(ConstMessage.CLOSE_PHOTOGRAPHVIEW);
        }
        protected override void OnHide()
        {
            base.OnHide();
            if (_sceneObject != null)
            {
                GameObject.Destroy(_sceneObject);
                _sceneObject = null;
            }
            equipDataCache = null;
            _equipRoleData.Clear();
            _equipSceneData.Clear();
            hitGameObj = null;
            memoryHitGameObj = null;

            pinchGesture.onAction.Remove(OnPinch);
            rotationGesture.onAction.Remove(OnRotate);
            pinchGesture = null;
            rotationGesture = null;
        }
        public override void Dispose()
        {
            if (_scenePrefab != null)
            {
                GameObject.Destroy(_scenePrefab);
                _scenePrefab = null;
            }
            base.Dispose();
        }

    }
}