using HxGame.Data;
using System;
using System.IO;
using UnityEngine;
using UnityEngine.UI;
using static UnityOpenFolder;

///创建地图 - 蓝色块
///功能：创建地图， 删除地图， 自动贴图， 保存地形贴图
public class UICreateMap : MonoBehaviour
{
    private const int REGIONWIDTHSCALL = 10;
    private const int REGIONHEIGHTSCALL = 10;

    public delegate void CreatedMapCallback(int mapId, int mapWidth, int mapHeight);
    public CreatedMapCallback onCreatedMapCallback;

    public InputField txtMapID;
    public InputField txtMapWidth;
    public InputField txtMapHeight;
    public InputField txtRegionWidth;
    public InputField txtRegionHeight;

    public InputField txtRegionName;
    public InputField txtStartNum;

    public Image MapBG;

    public Button btnCreateMap;
    //public Button btnDeleteMap;
    public Button btnAutoCreateRegion;
    public Button btnAutoCleanupRegion;

    private MapRegions _curMapRegions;

    private void Start()
    {
        _curMapRegions = new MapRegions();
        txtStartNum.text = "0";

        btnCreateMap.onClick.AddListener(CreateMap);
        //btnDeleteMap.onClick.AddListener(DeleteMap);

        btnAutoCreateRegion.onClick.AddListener(AutoLoadSprite);
        btnAutoCleanupRegion.onClick.AddListener(CleanupSprite);
    }

    bool CheckValid()
    {
        if (string.IsNullOrEmpty(txtMapID.text))
        {
            UIWindow.Instance.ShowMessage("请填写地图ID");
            return false;
        }

        //if (string.IsNullOrEmpty(txtMapWidth.text))
        //{
        //    UIWindow.Instance.ShowMessage("请填写地图宽度");
        //    return false;
        //}

        //if (string.IsNullOrEmpty(txtMapHeight.text))
        //{
        //    UIWindow.Instance.ShowMessage("请填写地图高度");
        //    return false;
        //}

        if (string.IsNullOrEmpty(txtRegionWidth.text))
        {
            UIWindow.Instance.ShowMessage("请填写贴图宽度");
            return false;
        }

        if (string.IsNullOrEmpty(txtRegionHeight.text))
        {
            UIWindow.Instance.ShowMessage("请填写贴图高度");
            return false;
        }

        int mapId = Convert.ToInt32(txtMapID.text);
        //int mapWidth = Convert.ToInt32(txtMapWidth.text);
        //int mapHeight = Convert.ToInt32(txtMapHeight.text);
        int regionWidth = Convert.ToInt32(txtRegionWidth.text);
        int regionHeight = Convert.ToInt32(txtRegionHeight.text);

        if (regionWidth <= 0 || regionHeight <= 0)
        {
            UIWindow.Instance.ShowMessage("请输入大于0的数值");
            return false;
        }

        return true;
    }

    public void CreateMap()
    {
        if(!MapBG.name.Equals("BG"))
        {
            UIWindow.Instance.ShowMessage("请先关闭已有地图");
            return;
        }

        if(UIWindow.Instance.uiMapPanel.HasMap(txtMapID.text))
        {
            UIWindow.Instance.ShowMessage("已有该地图");
            return;
        }

        if (!CheckValid())
            return;


        //创建新地图文件夹
        string path = $"{Application.dataPath}/GameAssets/Maps/{txtMapID.text}";
        if(!Directory.Exists(path))
        {
            Directory.CreateDirectory(path);

            //创建XML,Texture文件夹
            Directory.CreateDirectory($"{path}/XML");
            Directory.CreateDirectory($"{path}/Texture");
        }

        OpenMap();
    }

    private void OpenMap()
    {
        if (!MapBG.name.Equals("BG"))
        {
            UIWindow.Instance.ShowMessage("请先关闭已有地图");
            return;
        }

        int mapId = Convert.ToInt32(txtMapID.text);
        int mapWidth = Convert.ToInt32(txtMapWidth.text);
        int mapHeight = Convert.ToInt32(txtMapHeight.text);

        MapBG.name = txtMapID.text;

        Vector2 size = new Vector2(mapWidth / MapManager.CELLSCALE, mapHeight / MapManager.CELLSCALE);
        MapBG.transform.GetComponent<RectTransform>().sizeDelta = size;

        CreateImageRegion();

        if (onCreatedMapCallback == null)
            return;

        onCreatedMapCallback(mapId, mapWidth, mapHeight);
    }

    public void CloseMap()
    {
        if (MapBG.name.Equals("BG"))
        {
            UIWindow.Instance.ShowMessage("还没有创建地图");
            return;
        }

        Transform regionsTrans = UIWindow.Instance.mapTrans.Find("Regions");
        int count = regionsTrans.childCount;
        for (int i = 0; i < count; i++)
        {
            DestroyImmediate(regionsTrans.GetChild(0).gameObject);
        }

        MapBG.name = "BG";
        MapBG.GetComponent<Image>().enabled = true;

        UIWindow.Instance.uiEditMapConfig.Cleanup();
    }

    //public void DeleteMap()
    //{
    //    CloseMap();
    //}

    private void CreateImageRegion()
    {
        if (!CheckValid())
            return;

        Transform regionsTrans = UIWindow.Instance.mapTrans.Find("Regions");
        if (regionsTrans == null)
        {
            UIWindow.Instance.ShowMessage("没有找到Regions节点");
            return;
        }

        UnityEngine.Object quadObj = Resources.Load("Prefabs/Region");
        if (quadObj == null)
        {
            UIWindow.Instance.ShowMessage("Region.prefab失败");
            return;
        }

        int mapWidth = Convert.ToInt32(txtMapWidth.text);
        int mapHeight = Convert.ToInt32(txtMapHeight.text);
        int regionWidth = Convert.ToInt32(txtRegionWidth.text);
        int regionHeight = Convert.ToInt32(txtRegionHeight.text);

        int row = mapWidth / MapManager.CELLSCALE / regionWidth;
        int col = mapHeight / MapManager.CELLSCALE / regionHeight;
        _curMapRegions.regions = new Region[row, col];
        for (int i=0; i<row; i++)
        {
            for(int j=0; j<col; j++)
            {
                _curMapRegions.regions[i, j] = new Region();
                GameObject go = Instantiate(quadObj) as GameObject;
                go.name = $"{i}_{j}";
                go.transform.SetParent(regionsTrans, false);
                go.layer = LayerMask.NameToLayer("MapCell");
                go.GetComponent<RectTransform>().anchoredPosition3D = new Vector3(i * regionWidth, j * regionHeight, 0);
                go.GetComponent<RectTransform>().sizeDelta = new Vector2(0.9f * regionWidth, 0.9f * regionHeight);
                Button btn = go.GetComponent<Button>();
                btn.onClick.AddListener(() => OpenImageRegion(go));
            }
        }
    }

    public void OpenImageRegion(GameObject go)
    {
        var extension = new[]
        {
            new ExtensionFilter("Image Files", "png", "jpg", "jpeg")
        };

        string[] path = UnityOpenFolder.OpenFilePanel("Open File", "", extension, false);

        if (path.Length == 0)
            return;

        int regionWidth = Convert.ToInt32(txtRegionWidth.text);
        int regionHeight = Convert.ToInt32(txtRegionHeight.text);

        int idx = path[0].LastIndexOf('\\');
        string tmpName = path[0].Substring(idx + 1);
        tmpName = tmpName.Split('.')[0];

        MapManager.Instance.LoadSprite(tmpName, go, regionWidth, regionHeight);
    }



    public void AutoLoadSprite()
    {
        if (!CheckValid())
            return;

        if (string.IsNullOrEmpty(txtStartNum.text))
        {
            UIWindow.Instance.ShowMessage("请填写贴图起始编号");
            return ;
        }

        int mapId = Convert.ToInt32(txtMapID.text);
        int mapWidth = Convert.ToInt32(txtMapWidth.text);
        int mapHeight = Convert.ToInt32(txtMapHeight.text);

        int regionWidth = Convert.ToInt32(txtRegionWidth.text);
        int regionHeight = Convert.ToInt32(txtRegionHeight.text);

        int rows = mapWidth / MapManager.CELLSCALE / regionWidth;
        int cols = mapHeight / MapManager.CELLSCALE / regionHeight;

        int startNum = Convert.ToInt32(txtStartNum.text);
        int num = 0;

        Transform imgTrans = UIWindow.Instance.mapTrans.Find("Regions");

        for (int i=0; i< rows; i++)
        {
            for(int j=0; j< cols; j++)
            {
                string tmpName = $"{i}_{j}";
                Transform trans = imgTrans.Find(tmpName);

                if (trans == null)
                    continue;

                //num = startNum + (col - (j+1)) * row + i;
                //tmpName = string.Format("{0}_{1:D2}", txtRegionName.text, num);

                tmpName = _curMapRegions.regions[i, j].regionName;
                if(string.IsNullOrEmpty(tmpName))
                {
                    num = startNum + (cols - (j+1)) * rows + i;
                    tmpName = string.Format("{0}_{1:D2}", txtRegionName.text, num);
                }

                MapManager.Instance.LoadSprite(tmpName, trans.gameObject, regionWidth, regionHeight);

            }
        }

        MapBG.GetComponent<Image>().enabled = false;
    }

    public void CleanupSprite()
    {
        Transform imgTrans = UIWindow.Instance.mapTrans.Find("Regions");
        for(int i=0; i<imgTrans.childCount; i++)
        {
            //Image image = imgTrans.GetChild(i).GetComponent<Image>();
            //image.sprite = null;
            RawImage image = imgTrans.GetChild(i).GetComponent<RawImage>();
            image.texture = null;
        }

        btnAutoCreateRegion.gameObject.SetActive(true);
        btnAutoCleanupRegion.gameObject.SetActive(false);
    }

    public void LoadMapRegions(int mapId)
    {
        if (!_curMapRegions.LoadXML(mapId))
            return;

        txtMapID.text = mapId.ToString();
        txtMapWidth.text = _curMapRegions.regionRowNum.ToString();
        txtMapHeight.text = _curMapRegions.regionColNum.ToString();
        txtRegionWidth.text = _curMapRegions.regionWidth.ToString();
        txtRegionHeight.text = _curMapRegions.regionHeight.ToString();

        txtRegionName.text = _curMapRegions.regions[0, 0].regionName.Split('_')[0];
        int idx = 1000;
        int tmpIdx = 1000;
        foreach (var region in _curMapRegions.regions)
        {
            var splitNames = region.regionName.Split('_');
            if (splitNames.Length != 2)
                continue;

            tmpIdx = Convert.ToInt32(splitNames[1]);
            if (tmpIdx < idx)
                idx = tmpIdx;
        }

        txtStartNum.text = idx.ToString();

        OpenMap();
        AutoLoadSprite();
    }
}