using System;
using System.IO;
using System.Text;
using LeafWeb.Core.Utility;
using Renci.SshNet;

namespace LeafWeb.Core.Remote
{
	public interface IPiscalClient
	{
		void SubmitLeafInputFile(PiscalLeafInputFile file);
		void RetrieveLeafInputResult(PiscalLeafInputFile file);
	}

	public class PiscalSshClient : IPiscalClient
	{
		private const string BaseDirectory = "LeafInput";
		private readonly PasswordConnectionInfo _connectionInfo;

		public PiscalSshClient(string connectionString)
		{
			var conn = connectionString.SplitConnectionString();

			var host = conn["host"];
			var username = conn["username"];
			var password = conn["password"];
			_connectionInfo = new PasswordConnectionInfo(host, username, password);
		}

		private SshClient GetSshClient()
		{
			return new SshClient(_connectionInfo);
		}

		private ScpClient GetScpClient()
		{
			return new ScpClient(_connectionInfo);
		}

		public void SubmitLeafInputFile(PiscalLeafInputFile file)
		{
			var inputPath = BaseDirectory + "/" + file.DirectoryName + "/" + file.Filename;
			var outputPath = BaseDirectory + "/" + file.DirectoryName + "/" + file.Filename;

			using (var scp = GetScpClient())
			using (var stream = new MemoryStream(file.Contents))
			{
				scp.Connect();
				scp.Upload(stream, inputPath);
			}

			using (var ssh = GetSshClient())
			{
				ssh.Connect();
				var lsCommend = ssh.CreateCommand("ls -r");
				lsCommend.Execute();
				//var extendedData = Encoding.ASCII.GetString(cmd.ExtendedOutputStream.ToArray());
				var extendedData = new StreamReader(lsCommend.ExtendedOutputStream, Encoding.ASCII).ReadToEnd();
				ssh.Disconnect();

				Console.Write(lsCommend.Result);
				Console.Write(extendedData);
				//Assert.AreEqual("12345\n", cmd.Result);
				//Assert.AreEqual("654321\n", extendedData);
			}
			// copy file

			// begin processing
		}

		public void RetrieveLeafInputResult(PiscalLeafInputFile file)
		{
			using (var scp = GetScpClient())
			using (var stream = new MemoryStream(file.Contents))
			{
				scp.Connect();
				scp.Upload(stream, BaseDirectory + "/" + file.DirectoryName + "/" + file.Filename);
			}

		}
	}
}