using Microsoft.Extensions.Configuration;
using PartSource.Automation.Models.Configuration;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Net;
using System.Threading.Tasks;

namespace PartSource.Automation.Services
{
	public class FtpService
	{
		private readonly FtpConfiguration _ftpConfiguration;

		public FtpService(FtpConfiguration ftpConfiguration)
		{
			_ftpConfiguration = ftpConfiguration;
		}

		public string[] ListFiles(string directory)
		{
			FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri($"{_ftpConfiguration.Url}/{directory}"));
			request.Credentials = new NetworkCredential(_ftpConfiguration.Username, _ftpConfiguration.Password);
			request.Method = WebRequestMethods.Ftp.ListDirectory;

			using FtpWebResponse response = (FtpWebResponse)request.GetResponse();
			using StreamReader reader = new StreamReader(response.GetResponseStream());

			string files = reader.ReadToEnd();

			return files.Length > 0
				? files.Split("\r\n")
				: Array.Empty<string>();
		}

		public void Download(string filename)
		{
			string file = $"{_ftpConfiguration.Destination}\\{filename.Replace("/", "\\")}";

			FtpWebRequest request = (FtpWebRequest)WebRequest.Create(new Uri($"{_ftpConfiguration.Url}/{filename}"));
			request.Credentials = new NetworkCredential(_ftpConfiguration.Username, _ftpConfiguration.Password);
			request.Method = WebRequestMethods.Ftp.DownloadFile;
			
			using FtpWebResponse response = (FtpWebResponse)request.GetResponse();
			using Stream responseStream = response.GetResponseStream();
			using FileStream fileStream = new FileStream($"{_ftpConfiguration.Destination}\\{filename.Replace("/", "\\")}", FileMode.Create);
			
			responseStream.CopyTo(fileStream);
		}
	}
}