using HxGame;
using HxGame.Data;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Xml;
using UnityEditor;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.Networking;
using UnityEngine.Tilemaps;
using UnityEngine.UI;

public partial class MapManager : MonoBehaviour
{
    public enum CellType
    {
        /// <summary>
        /// 无效格
        /// </summary>
        None = 0,

        /// <summary>
        /// 移动
        /// </summary>
        Move = 1,

        /// <summary>
        /// 阻挡
        /// </summary>
        Obstacle = 2,

        /// <summary>
        /// 隐藏
        /// </summary>
        Hide = 4,

        /// <summary>
        /// 有角色占据（运行时动态变化时产生）
        /// </summary>
        HadRole = 8,

        /// <summary>
        /// 安全区
        /// </summary>
        Safe = 16,

        /// <summary>
        /// 摆摊区域
        /// </summary>
        Stall = 32,
    }

    [Flags]
    public enum CellLayer
    {
        Move = 1,       //移动
        Obstacle = 2,   //阻挡
        Hide = 4,       //隐藏
        Safe = 16,      //安全区
        Stall = 32,     //摆摊
        Audio = 64,     //音效
        Trigger = 128,  //触发
        Monster = 256   //怪物
    }


    //地图宽高缩放
    public const int CELLSCALE = 100;

    public delegate void LoadFinishedCallback();
    public LoadFinishedCallback onLoadFinishedCallback;
    //public delegate void CloseMapCallback();
    //public CloseMapCallback onCloseMapCallback;

    private static MapManager _mapManager = null;
    public static MapManager Instance
    {
        get
        {
            if (_mapManager == null)
                _mapManager = FindObjectOfType<MapManager>();

            return _mapManager;
        }
    }

    [HideInInspector]
    public int mapWidth = 0;
    [HideInInspector]
    public int mapHeight = 0;

    private int _maxWidth;    //记录最大宽度索引
    private int _maxHeight;   //记录最大高度索引
    private int _cellWidth;
    private int _cellHeight;
    private int _cellRows;
    private int _cellCols;
    //public CellNode[,] cellNodes;

    private int _curOpenMapId;

    private Material _cellMoveMat;
    private Material _cellObsMat;
    private Material _cellHideMat;
    private Material _cellDefaultMat;
    private Material _cellReturnMat;  //回城点
    private Material _cellReliveMat;  //复活点
    private Material _cellTeleportMat;  //传送点
    private Material _cellNpcMat;       //npc位置
    private Material _cellPathNodeMat;  //pathNode
    private Material _cellTriggerMat;  //trigger

    private bool _StartEditor;
    private float _brushRadius;
    private CellType _brushCellType;

    public int CellRows { get { return _cellRows; } }
    public int CellCols { get { return _cellCols; } }

    public int CellWidth { get { return _cellWidth; } }
    public int CellHeight { get { return _cellHeight; } }

    public int MaxWidth { get { return _maxWidth; } }
    public int MaxHeight { get { return _maxHeight; } }

    private UnityEngine.Object _cellAsset = null;
    private GameObject _curPathObj = null;

    private void Start()
    {
        _cellAsset = Resources.Load("Prefabs/Cell");
        if (_cellAsset == null)
        {
            UIWindow.Instance.ShowMessage("加载cell.prefab失败");
            return;
        }

        foreach (CellLayer layer in Enum.GetValues(typeof(CellLayer)))
        {
            List<GameObject> gos = new List<GameObject>();
            _layCellsMap.Add(layer, gos);
        }

        _cellMoveMat = Resources.Load<Material>("Materials/cellMoveMat");
        _cellObsMat = Resources.Load<Material>("Materials/cellObsMat");
        _cellHideMat = Resources.Load<Material>("Materials/cellHideMat");
        _cellDefaultMat = Resources.Load<Material>("Materials/cellDefaultMat");

        _cellReturnMat = Resources.Load<Material>("Materials/cellReturnMat");
        _cellReliveMat = Resources.Load<Material>("Materials/cellReliveMat");
        _cellTriggerMat = Resources.Load<Material>("Materials/cellTriggerMat");
        _cellTeleportMat = Resources.Load<Material>("Materials/cellTeleportMat");
        _cellNpcMat = Resources.Load<Material>("Materials/cellNpcMat");
        _cellPathNodeMat = Resources.Load<Material>("Materials/cellPathNodeMat");
        UIWindow.Instance.uiCreateMap.onCreatedMapCallback += OnCreatedMap;
        Cleanup();
    }

    private void OnCreatedMap(int mapId, int mapWidth, int mapHeight)
    {
        this.mapWidth = mapWidth;
        this.mapHeight = mapHeight;
        _curOpenMapId = mapId;
    }

    public void StartEditor()
    {
        if (_curOpenMapId < 0)
        {
            UIWindow.Instance.ShowMessage("请先打开地图");
            return;
        }

        _StartEditor = true;
        _curEditCellType = EditCellType.None;
    }

    public void CloseEditor()
    {
        _StartEditor = false;
    }

    public void SetBrush(float radius, CellType type)
    {
        _brushRadius = radius;
        _brushCellType = type;
    }

    public void SaveCellsXml()
    {

        if(cellsNode.Length == 0)
        {
            UIWindow.Instance.ShowMessage("网格数据还没生成");
            return;
        }

        string path = PathUtil.GetXmlPath(_curOpenMapId, "Obs");

        if (File.Exists(path))
            File.Delete(path);

        XmlDocument xml = new XmlDocument();
        XmlDeclaration node = xml.CreateXmlDeclaration("1.0", "utf-8", "no");
        xml.AppendChild(node);
        XmlElement Root = xml.CreateElement("Item");
        xml.AppendChild(Root);

        Root.SetAttribute("ID", _curOpenMapId.ToString());
        Root.SetAttribute("MapWidth", mapWidth.ToString());
        Root.SetAttribute("MapHeight", mapHeight.ToString());
        Root.SetAttribute("CellWidth", _cellWidth.ToString());
        Root.SetAttribute("CellHeight", _cellHeight.ToString());

        
        CellNode cell = null;
        StringBuilder sb = new StringBuilder();

        //tempSafeAreasConfig.Clear();

        for (int row = 0; row < _cellRows; row++)
        {
            for (int col = 0; col < _cellCols; col++)
            {
                cell = GetCell(col, row);
                if(cell == null)
                {
                    UIWindow.Instance.ShowMessage("读取网格错误");
                    return;
                }

                //如果是安全区格子，加上安全区枚举位运算类型
                //if (CheckIsSafeCell(cell))
                //{
                //    cell.cellType |= CellType.Safe;
                //}

                sb.Append(string.Format($"{row},{col},{(int)cell.cellType};"));
            }
        }
        sb.Remove(sb.Length - 1, 1);

        string Value = sb.ToString();
        Root.SetAttribute("Value", Value);

        xml.Save(path);
        UIWindow.Instance.ShowMessage("保存地图网格xml成功.");
    }


    List<MapConfig.AreaConfig> tempSafeAreasConfig = new List<MapConfig.AreaConfig>();

    public void CloseMap()
    {
        if (_curOpenMapId <= 0)
            return;

        RemoveAllCells();
        UIWindow.Instance.uiCellInfo.CloseMap();
        UIWindow.Instance.uiCreateMap.CloseMap();
        UIWindow.Instance.uiMonstersPanel.RemoveAll();

        Cleanup();
    }

    private void Cleanup()
    {
        mapWidth = 0;
        mapHeight = 0;
        _maxWidth = 0;
        _maxHeight = 0;
        _cellWidth = -1;
        _cellHeight = -1;
        _cellRows = -1;
        _cellCols = -1;
        _curOpenMapId = -1;

        _StartEditor = false;
        _brushRadius = 0;
        _brushCellType = CellType.None;
        cellsNode = null;
    }


    private void Update()
    {
        bool bHoverUI = EventSystem.current != null && EventSystem.current.IsPointerOverGameObject();
        if (bHoverUI)
            return;

        if (_curEditCellType != EditCellType.None)
        {
            EditSpecialMapPoint(_curEditCellType);
            return;
        }

        if (!_StartEditor)
            return;

        if (Input.GetMouseButton(0))
        {
            EditCell();
        }
    }

    private void EditCell()
    {
        //从摄像机发出到点击坐标的射线
        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hitInfo;
        if (Physics.Raycast(ray, out hitInfo))
        {
            GameObject gameObj = hitInfo.collider.gameObject;
            if (gameObj.layer != LayerMask.NameToLayer("MapCell"))
                return;

            if (_brushRadius == 0)
            {
                CellType ct = SetCellType(gameObj.name, _brushCellType);
                ShowCellType(gameObj, ct);
                return;
            }

            Collider[] hits = Physics.OverlapSphere(gameObj.transform.position, _brushRadius);// LayerMask.NameToLayer("MapCell")
            if (hits.Length > 0)
            {
                for (int i = 0; i < hits.Length; i++)
                {
                    CellType ct = SetCellType(hits[i].name, _brushCellType);
                    ShowCellType(hits[i].gameObject, ct);
                }
            }
        }
    }

    private void EditSpecialMapPoint(EditCellType type)
    {
        if (Input.GetMouseButtonUp(0))
        {
            if(type == EditCellType.NpcPath)
            {
                if (_curPathObj == null)
                    return;

                UIWindow.Instance.uiNpcsPanel.curActiveList.Add(_curPathObj.name);
                UIWindow.Instance.uiNpcsPanel.curActiveInput.text += $"[{_curPathObj.name.Replace('_', ',')}]";
                AddNpcPathSize();
                _curPathObj = null;
            }
            else if (type == EditCellType.MonsterPath)
            {
                if (_curPathObj == null)
                    return;

                //UIWindow.Instance.uiMonstersPanel_old.curActiveList.Add(_curPathObj.name);
                //UIWindow.Instance.uiMonstersPanel_old.curActiveInput.text += $"[{_curPathObj.name.Replace('_', ',')}]";
                AddMonsterPathSize();
                _curPathObj = null;
            }
            else
            {
                _curEditCellType = EditCellType.None;
                return;
            }
        }

        if(type == EditCellType.NpcPath)
        {
            if(Input.GetKeyDown(KeyCode.Escape))
            {
                string last = $"NpcPath{_curNpcPointIdx}{GetCurNpcPathIdx()}";
                GameObject lastObj = GameObject.Find(last);
                DestroyImmediate(lastObj);
                _curEditCellType = EditCellType.None;
                return;
            }
        }
        else if (type == EditCellType.MonsterPath)
        {
            if (Input.GetKeyDown(KeyCode.Escape))
            {
                string last = $"MonsterPath{_curMonsterPoint.areaIdx}{GetCurMonsterPathIdx()}";
                GameObject lastObj = GameObject.Find(last);
                DestroyImmediate(lastObj);
                _curEditCellType = EditCellType.None;
                return;
            }
        }

        Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
        RaycastHit hitInfo;

        if (Physics.Raycast(ray, out hitInfo))
        {
            GameObject gameObj = hitInfo.collider.gameObject;
            if (gameObj.layer != LayerMask.NameToLayer("MapCell"))
                return;

            string[] point = gameObj.name.Split('_');
            if (point.Length != 2)
            {
                if (Input.GetMouseButtonUp(1))
                {
                    int xx = (int)((gameObj.transform.localPosition.x - _cellWidth / 100.0f / 2) / (_cellWidth / 100.0f));
                    int yy = (int)((gameObj.transform.localPosition.y - _cellHeight / 100.0f / 2) / (_cellHeight / 100.0f));

                    UIWindow.Instance.uiNpcsPanel.curActiveList.Remove($"{xx}_{yy}");
                    DestroyImmediate(gameObj);
                }

                return;
            }


            int x, y;
            x = Convert.ToInt32(point[0]);    //行
            y = Convert.ToInt32(point[1]);    //列
            CreateSpecialPoint(x, y, type);

            _curPathObj = gameObj;

            switch (type)
            {
                case EditCellType.ReturnCell:
                    UIWindow.Instance.uiEditMapConfig.txtReturnMapCellPoint.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.TeleportCell:
                    UIWindow.Instance.uiTeleportPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.NpcCell:
                    UIWindow.Instance.uiNpcsPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.PathNodeCell:
                    UIWindow.Instance.uiCellEditor.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.TriggerCell:
                    UIWindow.Instance.uiTriggersPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.AudioTrigger:
                    UIWindow.Instance.uiAudioTriggerPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.ReliveCell:
                    UIWindow.Instance.uiRelivesPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.SellArea:
                    UIWindow.Instance.uiSellAreasPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.MonsterArea:
                    UIWindow.Instance.uiMonstersPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.FuBenArea:
                    UIWindow.Instance.uiFuBensPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
                case EditCellType.JuBaoArea:
                    UIWindow.Instance.uiJuBaosPanel.curActiveInput.text = gameObj.name.Replace('_', ',');
                    break;
            }
        }
    }

    public void LoadSprite(string spName, GameObject go, int regionWidth=0, int regionHeight=0)
    {
        StartCoroutine(LoadSpriteCor(spName, go, regionWidth, regionHeight));
    }

    IEnumerator LoadSpriteCor(string spName, GameObject go, int regionWidth, int regionHeight)
    {
        string spPath = PathUtil.GetTexture(_curOpenMapId, spName, "jpg");

        using (UnityWebRequest req = UnityWebRequestTexture.GetTexture(spPath))
        {
            yield return req.SendWebRequest();
            if (req.result == UnityWebRequest.Result.ConnectionError)
            {
                UIWindow.Instance.ShowMessage(req.error);
            }
            else
            {
                Texture2D tt = DownloadHandlerTexture.GetContent(req);
                if (tt == null)
                    yield break;

                //根据获取的Texture建立一个sprite
                //Sprite sprite = Sprite.Create((Texture2D)tt, new Rect(0, 0, tt.width, tt.height), new Vector2(0, 0));
                //sprite.name = spName;
                //go.GetComponent<Image>().sprite = sprite;
                tt.name = spName;
                go.GetComponent<RawImage>().texture = tt;
                go.GetComponent<RectTransform>().sizeDelta = new Vector2(regionWidth, regionHeight);
            }
        }
    }
}