using System;
using System.Collections;
using System.Collections.Generic;
using System.Data.Common;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;

///最上面
///功能：扫描地图、打开地图、关闭地图、放弃设置
public class UIMapPanel : MonoBehaviour
{
    public ToggleGroup mapEditorGroup;
    public Dropdown dropMap;
    private bool _saving;
    // Start is called before the first frame update
    void Start()
    {
        _saving = false;
        dropMap.onValueChanged.AddListener(delegate {
            if (dropMap.options.Count > 0)
            {
                int mapId = Convert.ToInt32(dropMap.options[dropMap.value].text);
                UICellInfo.Instance.ShowMapWidthAndHeight(mapId);
            }
        });
    }
    void OnDataLoaded()
    {
        // 获取所有地图文件夹
        string mapsDirectory = Path.Combine(Application.dataPath, "GameAssets", "Maps");
        if (!Directory.Exists(mapsDirectory))
        {
            Debug.LogError($"Maps directory not found: {mapsDirectory}");
            return;
        }
        MapManager.Instance.allMaps.Clear();
        string[] mapFolders = Directory.GetDirectories(mapsDirectory);
        foreach (string folderPath in mapFolders)
        {
            string[] pathSplit = folderPath.Split(Path.DirectorySeparatorChar);
            string mapId = pathSplit[pathSplit.Length - 1]; // 例如 "v1000"

            string textureDirectory = Path.Combine(folderPath, "Texture");
            if (Directory.Exists(textureDirectory))
            {
                string[] imageFiles = Directory.GetFiles(textureDirectory, "*.jpg");
                int maxRow = 0;
                int maxCol = 0;
                string pattern = $@"{mapId}_r(\d+)_c(\d+)"; // 正则表达式：匹配 v1000_rXX_cYY
                Regex regex = new Regex(pattern);

                foreach (string filePath in imageFiles)
                {
                    string fileName = Path.GetFileNameWithoutExtension(filePath); // 例如 "v1000_r11_c14"
                    Match match = regex.Match(fileName);
                    if (match.Success)
                    {
                        if (int.TryParse(match.Groups[1].Value, out int row) && int.TryParse(match.Groups[2].Value, out int col))
                        {
                            maxRow = Mathf.Max(maxRow, row);
                            maxCol = Mathf.Max(maxCol, col);
                        }
                    }
                    else
                    {
                        Debug.LogWarning($"Filename {fileName} does not match expected pattern: {pattern}");
                    }
                }

                MapManager.Instance.allMaps[mapId] = (maxCol, maxRow, imageFiles.Length);
            }
            else
            {
                Debug.LogWarning($"Texture directory not found for map {mapId}: {textureDirectory}");
            }
        }
    }
    /// <summary>
    /// 重命名图片格式从 map_x 到 v{mapId}_rx_cx 格式（包含重复检查）
    /// </summary>
    public void ReNamePicFormat()
    {
        int mapId = Convert.ToInt32(dropMap.options[dropMap.value].text);
        int width = UICellInfo.Instance.CustomMapWidth; // 地图宽度（列数）
        string mapsDirectory = Path.Combine(Application.dataPath, "GameAssets", "Maps", $"{mapId}", "Texture");

        if (!Directory.Exists(mapsDirectory))
        {
            Debug.LogError($"Maps directory not found: {mapsDirectory}");
            return;
        }

        // 获取所有jpg文件
        string[] imageFiles = Directory.GetFiles(mapsDirectory, "*.jpg");
        int totalFiles = imageFiles.Length;

        if (totalFiles == 0)
        {
            UIWindow.Instance.ShowMessage($"No jpg files found in directory: {mapsDirectory}");
            return;
        }

        // 检查是否已经是目标命名格式
        if (IsAlreadyRenamed(imageFiles, mapId))
        {
            UIWindow.Instance.ShowMessage($"文件夹 {mapId} 已经是目标命名格式，跳过重命名");
            return;
        }

        // 检查是否混合格式（部分已重命名，部分未重命名）
        if (IsMixedFormat(imageFiles, mapId))
        {
            UIWindow.Instance.ShowMessage($"文件夹 {mapId} 包含混合格式的文件，请先清理文件夹");
            return;
        }

        // 按数字排序map_格式的文件
        var mapFiles = imageFiles
            .Where(file => Path.GetFileNameWithoutExtension(file).StartsWith("map_"))
            .OrderBy(file =>
            {
                string fileName = Path.GetFileNameWithoutExtension(file);
                if (int.TryParse(fileName.Substring(4), out int number))
                {
                    return number;
                }
                return int.MaxValue;
            })
            .ToArray();

        if (mapFiles.Length == 0)
        {
            UIWindow.Instance.ShowMessage($"没有找到map_格式的文件，但也不是目标格式");
            return;
        }

        // 计算行数
        int height = Mathf.CeilToInt((float)mapFiles.Length / width);
        UIWindow.Instance.ShowMessage($"Renaming {mapFiles.Length} files with grid size: {width}x{height}");

        int renamedCount = 0;
        int errorCount = 0;

        // 执行重命名操作
        for (int index = 0; index < mapFiles.Length; index++)
        {
            string oldFilePath = mapFiles[index];
            string fileName = Path.GetFileNameWithoutExtension(oldFilePath);
            string fileExtension = Path.GetExtension(oldFilePath);

            try
            {
                // 计算行列位置（从1开始）
                int row = (index / width) + 1;
                int col = (index % width) + 1;

                // 生成新文件名（使用地图ID）
                string newFileName = $"v{mapId}_r{row}_c{col}";
                string newFilePath = Path.Combine(mapsDirectory, newFileName + fileExtension);

                // 重命名文件
                File.Move(oldFilePath, newFilePath);
                renamedCount++;

                Debug.Log($"Renamed: {fileName} -> {newFileName}");
            }
            catch (Exception ex)
            {
                errorCount++;
                Debug.LogError($"Error renaming file {fileName}: {ex.Message}");
            }
        }

        Debug.Log($"Rename completed. Success: {renamedCount}, Errors: {errorCount}");

        // 刷新AssetDatabase
#if UNITY_EDITOR
        UnityEditor.AssetDatabase.Refresh();
#endif
        OnDataLoaded();
    }

    /// <summary>
    /// 检查是否已经是目标命名格式
    /// </summary>
    private bool IsAlreadyRenamed(string[] imageFiles, int mapId)
    {
        // 目标格式的正则表达式：v{mapId}_r数字_c数字
        string pattern = $"^v{mapId}_r\\d+_c\\d+$";
        var regex = new System.Text.RegularExpressions.Regex(pattern);

        foreach (string filePath in imageFiles)
        {
            string fileName = Path.GetFileNameWithoutExtension(filePath);

            // 如果发现任何非目标格式的文件，就不是已重命名状态
            if (!regex.IsMatch(fileName) && !fileName.StartsWith("map_"))
            {
                return false;
            }
        }

        // 检查是否至少有一个目标格式的文件
        bool hasTargetFormat = imageFiles.Any(file =>
            regex.IsMatch(Path.GetFileNameWithoutExtension(file)));

        return hasTargetFormat;
    }

    /// <summary>
    /// 检查是否混合格式（既有目标格式又有map_格式）
    /// </summary>
    private bool IsMixedFormat(string[] imageFiles, int mapId)
    {
        bool hasMapFormat = false;
        bool hasTargetFormat = false;
        string pattern = $"^v{mapId}_r\\d+_c\\d+$";
        var regex = new System.Text.RegularExpressions.Regex(pattern);

        foreach (string filePath in imageFiles)
        {
            string fileName = Path.GetFileNameWithoutExtension(filePath);

            if (fileName.StartsWith("map_"))
            {
                hasMapFormat = true;
            }
            else if (regex.IsMatch(fileName))
            {
                hasTargetFormat = true;
            }

            // 如果同时存在两种格式，就是混合状态
            if (hasMapFormat && hasTargetFormat)
            {
                return true;
            }
        }

        return false;
    }
    public void ExportMap()
    {
        MapManager.Instance.SaveAtlasToFile();
    }
    public void ScanMap()
    {
        MapManager.Instance.allMaps.Clear();

        OnDataLoaded();

        dropMap.options.Clear();
        foreach (var map in MapManager.Instance.allMaps)
        {
            Dropdown.OptionData od = new Dropdown.OptionData();
            od.text = map.Key;
            dropMap.options.Add(od);
        }
        dropMap.value = 1;
        dropMap.value = 0;  //为了默认选中第一项
    }

    public void OpenMap()
    {
        if(dropMap.options.Count == 0)
        {
            UIWindow.Instance.ShowMessage("请先扫描地图");
            return;
        }

        if(MapManager.Instance._curOpenMapId > 0)
        {
            UIWindow.Instance.ShowMessage("请先关闭已有地图");
            return;
        }
        int mapId = Convert.ToInt32(dropMap.options[dropMap.value].text);
        MapManager.Instance._curOpenMapId = mapId;
        MapManager.Instance.LoadMapRegionSprites(mapId);
        MapManager.Instance.LoadMapObs(mapId);
        UIWindow.Instance.uiEditMapConfig.LoadMapConfig(mapId);
        UIWindow.Instance.uiMonstersPanel.LoadMonsterConfig(mapId);
        UIWindow.Instance.uiNpcsPanel.LoadNpcsConfig(mapId);
        UIWindow.Instance.uiTriggersPanel.LoadTriggersConfig(mapId);
        UIWindow.Instance.uiFuBensPanel.LoadFuBenConfig(mapId);
        UIWindow.Instance.uiJuBaosPanel.LoadJuBaoConfig(mapId);
        //如果没有配置，需要创建阻隔点
        if (MapManager.Instance.map == null)
        {
            MapManager.Instance.CreateObs(mapId);
        }
        UICellInfo.Instance.ShowMapCellInfo();
    }

    public void CloseMap()
    {
        MapManager.Instance.CloseMap();
        MapManager.Instance._curOpenMapId = -1;
        foreach (var toggle in mapEditorGroup.ActiveToggles())
        {
            toggle.isOn = false;
        }
    }

    public bool HasMap(string mapId)
    {
        return MapManager.Instance.allMaps.ContainsKey(mapId);
    }

    private void Update()
    {
        if (Input.GetKey(KeyCode.LeftControl) && Input.GetKey(KeyCode.S))
        {
            if (_saving)
                return;

            SaveAll();
        }  
    }

    public void SaveAll()
    {
        _saving = true;
        Debug.Log("正在保存所有数据...");
        MapManager.Instance.SaveRegionXML();
        MapManager.Instance.SaveMapObs();
        UIWindow.Instance.uiEditMapConfig.SaveMapConfig();
        UIWindow.Instance.uiMonstersPanel.SaveMonsterConfig();
        UIWindow.Instance.uiNpcsPanel.SaveNpcsConfig();
        UIWindow.Instance.uiTriggersPanel.SaveTriggersConfig();
        UIWindow.Instance.uiJuBaosPanel.SaveJuBaoConfig();
        UIWindow.Instance.uiFuBensPanel.SaveFuBenConfig();
        UIWindow.Instance.ShowMessage("保存成功");
        _saving = false;

#if UNITY_EDITOR
        AssetDatabase.Refresh();
#endif
    }
}