using System;
using System.Collections;
using System.Collections.Generic;
using System.Data.SqlTypes;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml.Linq;
using static System.Net.WebRequestMethods;

namespace SuperDesign.Tools.SmartEditor
{
    public class MyFileSystemInfo
    {
        public MyFileSystemInfo(FileSystemInfo fileSystemInfo,string name)
        {
            if (fileSystemInfo == null) throw new ArgumentNullException("fileSystemInfo");
            ReLoad(fileSystemInfo,name);
        }
        public void ReLoad()
        {
            ReLoad(FullName);
        }
        public void ReLoad(string path)
        {
            if(System.IO.File.Exists(path))
            {
                ReLoad(new FileInfo(path), "");
            }
            else if (System.IO.Directory.Exists(path))
            {
                ReLoad(new DirectoryInfo(path), "");
            }
        }
        public void ReLoad(FileSystemInfo fileSystemInfo)
        {
            ReLoad(fileSystemInfo, "");
        }
        public void ReLoad(FileSystemInfo fileSystemInfo, string name)
        {
            var info = fileSystemInfo;
            if (name.Length == 0)
            {
                this.Name = info.Name;
            }
            else { this.Name = name; }
            Extension = info.Extension;
            LastWriteTime = info.LastWriteTime;
            CreationTime = info.CreationTime;
            FullName = info.FullName;
            Attributes = info.Attributes;
            AsDirectory = info as DirectoryInfo;
            AsFile = info as FileInfo;
            IsDirectory = this.AsDirectory != null;
            Length = IsDirectory ? -1 : AsFile.Length;
        }
        public bool IsDirectory { get;private set; }

        public DirectoryInfo AsDirectory { get; private set; }
        public FileInfo AsFile { get; private set; }

        public string Name{get; set;} = "";

        public string Extension { get; private set; } = "";
        public DateTime LastWriteTime { get; private set; }
        public DateTime CreationTime { get; private set; }
        public string FullName { get; private set; } = "";

        public FileAttributes Attributes { get;private set; }

        public long Length { get; private set; } = 0;

        public IEnumerable GetFileSystemInfos()
        {
            ArrayList children = new ArrayList();
            if (this.IsDirectory)
            {
                if (this.AsDirectory.Exists) {
                    foreach (var x in this.AsDirectory.GetDirectories()) {
                        children.Add(new MyFileSystemInfo(x, ""));
                    }
                    foreach (var x in this.AsDirectory.GetFiles()) {
                        children.Add(new MyFileSystemInfo(x, ""));
                    }
                }
            }
            return children;
        }
    }
}