using System;
using System.Collections.Generic;
using System.Net;
using System.Text;

using AllocsFixes.JSON;
using System.IO;
using System.Net.Sockets;
using System.Threading;

namespace AllocsFixes.NetConnections.Servers.Web
{
	public class WebCommandResult : IConsoleConnection
	{
		public static int handlingCount = 0;
		public static int currentHandlers = 0;
		public static long totalHandlingTime = 0;

		private HttpListenerResponse response;
		private string command;
		private string parameters;

		public WebCommandResult (string _command, string _parameters, HttpListenerResponse _response) {
			Interlocked.Increment (ref handlingCount);
			Interlocked.Increment (ref currentHandlers);

			response = _response;
			command = _command;
			parameters = _parameters;
		}

		public void SendLines (List<string> _output) {
			MicroStopwatch msw = new MicroStopwatch ();

			StringBuilder sb = new StringBuilder ();
			foreach (string line in _output) {
				sb.AppendLine (line);
			}

			JSONObject result = new JSONObject ();

			result.Add ("command", new JSONString (command));
			result.Add ("parameters", new JSONString (parameters));
			result.Add ("result", new JSONString (sb.ToString ()));

			response.SendChunked = false;

			try {
				WriteJSON (response, result);
			} catch (IOException e) {
				if (e.InnerException is SocketException) {
					Log.Out ("Error in WebCommandResult.SendLines(): Remote host closed connection: " + e.InnerException.Message);
				} else {
					Log.Out ("Error (IO) in WebCommandResult.SendLines(): " + e);
				}
			} catch (Exception e) {
				Log.Out ("Error in WebCommandResult.SendLines(): " + e);
			} finally {
				if (response != null) {
					response.Close ();
				}

				msw.Stop ();
				totalHandlingTime += msw.ElapsedMicroseconds;
				Log.Out ("WebCommandResult.SendLines(): Took {0} µs", msw.ElapsedMicroseconds);
				Interlocked.Decrement (ref currentHandlers);
			}
		}

		public void WriteJSON (HttpListenerResponse resp, JSON.JSONNode root)
		{
			byte[] buf = Encoding.UTF8.GetBytes (root.ToString());
			resp.ContentLength64 = buf.Length;
			resp.ContentType = "application/json";
			resp.ContentEncoding = Encoding.UTF8;
			resp.OutputStream.Write (buf, 0, buf.Length);
		}

		public void SendLine (string _text) {
			//throw new NotImplementedException ();
		}

		public void SendLog (string _msg, string _trace, UnityEngine.LogType _type) {
			//throw new NotImplementedException ();
		}

		public void EnableLogLevel (UnityEngine.LogType _type, bool _enable) {
			//throw new NotImplementedException ();
		}

		public string GetDescription () {
			return "WebCommandResult_for_" + command;
		}
	}
}