// /**
//  * File: Connection.cs
//  * Author: haraldwolff
//  *
//  * This file and it's content is copyrighted by the Author and / or copyright holder.
//  * Any use wihtout proper permission is illegal and may lead to legal actions.
//  *
//  *
//  **/
using System;
using ln.type;
using System.IO;
using ln.logging;
using ln.http.listener;
namespace ln.http.connections
{
    public abstract class Connection : IDisposable
    {
        public Listener Listener { get; private set; }

        public abstract IPv6 RemoteHost { get; }
        public abstract int RemotePort { get; }

        public abstract Stream GetStream();

        public Connection(Listener listener)
        {
            Listener = listener;
        }

        public virtual HttpRequest ReadRequest(HTTPServer httpServer)
        {
            try
            {
                return new HttpRequest(httpServer, GetStream(), Listener.LocalEndpoint, new Endpoint(RemoteHost, RemotePort));
            } catch (IOException)
            {
                return null;
            } catch (Exception e)
            {
                Logging.Log(e);
                return null;
            }
        }

        public abstract void Close();
        public virtual void Dispose()
        {
            Close();
            Listener = null;
        }

        public virtual void SendResponse(HttpResponse response) => SendResponse(GetStream(), response);

        public static void SendResponse(Stream stream, HttpResponse response)
        {
            response.HttpRequest.FinishRequest();

            response.SetHeader("Content-Length", response.ContentStream.Length.ToString());

            StreamWriter streamWriter = new StreamWriter(stream);
            streamWriter.NewLine = "\r\n";

            streamWriter.WriteLine("{0} {1} {2}", response.HttpRequest.Protocol, response.StatusCode, response.StatusMessage);
            foreach (String headerName in response.GetHeaderNames())
            {
                streamWriter.WriteLine("{0}: {1}", headerName, response.GetHeader(headerName));
            }

            foreach (HttpCookie httpCookie in response.Cookies)
            {
                streamWriter.WriteLine("Set-Cookie: {0}", httpCookie.ToString());
            }

            streamWriter.WriteLine();
            streamWriter.Flush();

            response.ContentStream.Position = 0;
            response.ContentStream.CopyTo(stream);
            response.ContentStream.Close();
            response.ContentStream.Dispose();

            stream.Flush();
        }
    }
}