using System;
using System.Net;
using System.Net.Sockets;
using System.Text;
using AudioSwitcher.AudioApi.CoreAudio;

namespace AC
{
    class Program
    {
        static void Main(string[] args)
        {
            CoreAudioDevice defaultPlaybackDevice = new CoreAudioController().DefaultPlaybackDevice;

            int recv;
            byte[] data = new byte[1024];
            IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 6789);

            Socket newsock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

            newsock.Bind(ipep);
            newsock.Listen(10);
            Console.WriteLine("Waiting for a client...");
            Socket client = newsock.Accept();
            IPEndPoint clientep =
                        (IPEndPoint)client.RemoteEndPoint;
            Console.WriteLine("Connected with {0} at port {1}",
                            clientep.Address, clientep.Port);

            while(true)
            {
                data = new byte[1024];
                recv = client.Receive(data);
                if (recv == 0)
                    break;

                var response = Encoding.ASCII.GetString(data, 0, recv);
                if (response.Equals("currentVolume"))
                {
                    Console.WriteLine("Current volume: " + defaultPlaybackDevice.Volume);
                    var vol = Encoding.ASCII.GetBytes(defaultPlaybackDevice.Volume.ToString());
                    client.Send(vol, vol.Length, SocketFlags.None);
                }
                else
                {
                    // TODO: Siryi, make this values configurable (also network properties: host, port, etc.)
                    const int minVolume = 0;
                    const int maxVolume = 100;
                    int newVolume = 0;
                    if (Int32.TryParse(response, out newVolume) && minVolume <= newVolume && maxVolume >= newVolume)
                    {
                        Console.WriteLine("Volume to set: " + response);
                        defaultPlaybackDevice.Volume = newVolume;
                    }
                    else
                    {
                        Console.Write(String.Format("Invalid response received: {0}. ", response));
                        Console.WriteLine(String.Format("New volume should be a valid integer between {0} and {1}", minVolume, maxVolume));
                    }
                }
            }
            Console.WriteLine("Disconnected from {0}",
                            clientep.Address);
            client.Close();
            newsock.Close();
        }
    }
}