using System;
using System.Collections.Generic;
using System.IO;
using System.Net;


    public class libFTP
    {
        public struct DirectoryItem
        {
            public Uri BaseUri;
            
            public string AbsolutePath
            {
                get
                {
                    return string.Format("{0}/{1}", BaseUri, Name);
                }
            }

            public bool IsDirectory;
            public string Permission;
            public string Proprietary;
            public DateTime DateCreated;
            public string Name;
            public int Size;
            public List<DirectoryItem> Items;
        }

        public libFTP()
        { 
        }

            public List<DirectoryItem> GetDirectoryInformation(string address, string username, string password,Boolean scanSubDirectory = false)
            {
                FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(address);
                request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                request.Credentials = new NetworkCredential(username, password);
                request.UsePassive = true;
                request.UseBinary = true;
                request.KeepAlive = false;

                List<DirectoryItem> returnValue = new List<DirectoryItem>();
                string[] list = null;

                using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
                using (StreamReader reader = new StreamReader(response.GetResponseStream()))
                {
                    list = reader.ReadToEnd().Split(new string[] { "\r\n" }, StringSplitOptions.RemoveEmptyEntries);
                }

                foreach (string line in list)
                {
                    string[] lstLine = line.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);

                    // Create directory info
                    DirectoryItem item = new DirectoryItem();
                    item.BaseUri = new Uri(address);
                    item.Permission = lstLine[0]; //Permission

                    if (lstLine[0].ToCharArray()[0] == 'd')
                    {
                        item.IsDirectory = true;
                        item.Size = 0;
                    }
                    else {
                        item.Size = int.Parse(lstLine[4]);
                    }
                    item.Proprietary = lstLine[2];
                    

                    // Windows FTP Server Response Format
                    // DateCreated    IsDirectory    Name
                    string data = line;

                    // Parse date
                    string[] mySplit;
                    mySplit = data.Split(new string[] { lstLine[4] }, StringSplitOptions.RemoveEmptyEntries);
                    string date = mySplit[1];
                    mySplit = date.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
                    date = mySplit[0] +" "+ mySplit[1] +" "+ mySplit[2];
                    
                    DateTime dateTime = DateTime.Parse(date, System.Globalization.CultureInfo.CreateSpecificCulture("en-US").DateTimeFormat);
                    item.DateCreated = dateTime;
                    
                    mySplit = data.Split(new string[] { mySplit[2] }, StringSplitOptions.RemoveEmptyEntries);
                    // Parse name
                    string name = mySplit[1].Trim();
                    item.Name = name;

                    if (scanSubDirectory == true) { 
                        Console.WriteLine(item.AbsolutePath);
                        item.Items = item.IsDirectory ? GetDirectoryInformation(item.AbsolutePath, username, password) : null;
                    }

                    returnValue.Add(item);
                  
                }

                return returnValue;
            }
    }