using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using UnityEditor;
using UnityEngine;

public sealed class FilePathChecker : EditorWindow
{
    public const int MaxPathLen = 255;
    public const int MaxFileNameLen = 63;
    private List<string> files;
    private int curmaxPathLen = 180;
    private int curmaxFileNameLen = 50;
    private ConcurrentBag<string> showFiles = new();

    private Vector2 silderPos = Vector2.zero;

    private Tuple<string, bool>[] filters = new Tuple<string, bool>[]
    {
        new ("路径长度", false),
        new ("文件名长度", true),
        new ("材质", true),
        new ("模型", false),
        new ("场景", false),
        new ("其它",false),
    };

    [MenuItem("Window/路径检查")]
    private static void OpenFilePathCheckerWindow()
    {
        var wnd = GetWindow<FilePathChecker>();
        wnd.titleContent = new GUIContent("资源路径检查");
    }

    private FilePathChecker()
    {
        ConcurrentBag<string> fileBag = new ConcurrentBag<string>();
        Parallel.ForEach(Directory.GetFiles(Application.dataPath, "*.*", SearchOption.AllDirectories), item =>
        {
            if (item.EndsWith(".meta"))
            {
                return;
            }

            fileBag.Add("Assets" + item.Replace('\\', '/').Replace(Application.dataPath.Replace('\\', '/'), ""));
        });

        files = fileBag.ToList();
        FilterResult();
    }

    private void FilterResult()
    {
        showFiles.Clear();
        Parallel.ForEach(files, f =>
        {
            if (filters[0].Item2 && f.Length > curmaxPathLen || filters[1].Item2 && Path.GetFileNameWithoutExtension(f).Length > curmaxFileNameLen)
            {
                if (filters[2].Item2 && f.EndsWith(".mat"))
                {
                    showFiles.Add(f);
                }
                else if (filters[3].Item2 && (f.ToLower() is string s && (s.EndsWith(".fbx") || s.EndsWith(".obj"))))
                {
                    showFiles.Add(f);
                }
                else if (filters[4].Item2 && (f.ToLower() is string s1 && (s1.EndsWith(".unity") || s1.EndsWith(".scene"))))
                {
                    showFiles.Add(f);
                }
                else if (filters[5].Item2)
                {
                    showFiles.Add(f);
                }
            }
        });
    }

    private void OnGUI()
    {
        EditorGUILayout.BeginVertical();

        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.LabelField("路径长度");
        var _curmaxPathLen = EditorGUILayout.IntSlider(curmaxPathLen, 16, MaxPathLen);
        if (_curmaxPathLen != curmaxPathLen)
        {
            curmaxPathLen = _curmaxPathLen;
            FilterResult();
        }
        EditorGUILayout.EndHorizontal();

        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.LabelField("文件名长度");
        var _curmaxFileNameLen = EditorGUILayout.IntSlider(curmaxFileNameLen, 1, MaxFileNameLen);
        if (_curmaxFileNameLen != curmaxFileNameLen)
        {
            curmaxFileNameLen = _curmaxFileNameLen;
            FilterResult();
        }

        EditorGUILayout.EndHorizontal();
        EditorGUILayout.Space();
        EditorGUILayout.BeginHorizontal();

        for (int i = 0; i < filters.Length; i++)
        {
            var filter = filters[i];
            var v = EditorGUILayout.Toggle(filter.Item1, filter.Item2);
            if (v != filter.Item2)
            {
                filters[i] = new Tuple<string, bool>(filter.Item1, v);
                FilterResult();
            }
        }

        EditorGUILayout.EndHorizontal();
        EditorGUILayout.Space();

        silderPos = EditorGUILayout.BeginScrollView(silderPos);
        foreach (var item in showFiles)
        {
            FileItem(item);
        }
 
        EditorGUILayout.EndScrollView();

        EditorGUILayout.EndVertical();
    }


    private void FileItem(string path)
    {
        EditorGUILayout.BeginHorizontal();
        EditorGUILayout.LabelField(path);
        if (GUILayout.Button("Ping"))
        {
            EditorGUIUtility.PingObject(AssetDatabase.LoadAssetAtPath<UnityEngine.Object>(path));
        }
        EditorGUILayout.EndHorizontal();
    }
}