using NetMQ;
using NetMQ.Sockets;
using System;
using System.Collections.Concurrent;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;

namespace GameServer
{
    internal class Program
    {
        private static ConcurrentDictionary<string, TcpClient> clients = new ConcurrentDictionary<string, TcpClient>();

        static void Main(string[] args)
        {
            Task.Run(RunServer);
        }

        static async Task RunServer()
        {
            int port = 12345;
            TcpListener listener = new TcpListener(IPAddress.Any, port);
            listener.Start();
            Console.WriteLine($"Server listening on port {port}");

            while (true)
            {
                TcpClient client = await listener.AcceptTcpClientAsync();
                _ = HandleClientAsync(client);
            }
        }

        static async Task HandleClientAsync(TcpClient client)
        {
            using (NetworkStream stream = client.GetStream())
            {
                string clientAddress = client.Client.RemoteEndPoint.ToString();

                clients.TryAdd(clientAddress, client);

                var user = User.Create(client, stream);

                Console.WriteLine($"Client connected: {clientAddress}");

                byte[] buffer = new byte[4096];
                byte[] response = null;
                int bytesRead;
                while ((bytesRead = await stream.ReadAsync(buffer, 0, buffer.Length)) > 0)
                {
                    string data = Encoding.UTF8.GetString(buffer, 0, bytesRead);
                    //Console.WriteLine($"Received from {clientAddress}: {data}");
                    string[] commands = data.Split(" ");
                    if (commands.Length > 0)
                    {
                        switch (commands[0])
                        {
                            case "test":
                                Console.WriteLine($"测试 {commands[1]}");
                                break;
                            case "regist"://注册临时身份
                                user.Regist(commands[1]);
                                Console.WriteLine($"注册 {commands[1]}");
                                break;
                            case "getusers"://获取用户列表
                                response = Encoding.UTF8.GetBytes(string.Format("getusers {0}", User.GetUsers(user.userId)));
                                await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "createroom"://创建房间
                                Console.WriteLine($"创建房间 {commands[1]}");
                                var room = Room.Create(commands[1], user.userId);
                                response = Encoding.UTF8.GetBytes(string.Format("createroom {0},{1},{2}", room.roomId, room.roomname, room.creater));
                                Console.WriteLine("订阅：" + room.roomId.ToString());
                                await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "getrooms"://获取所有房间
                                response = Encoding.UTF8.GetBytes(string.Format("getrooms {0}", Room.GetRooms()));
                                await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "getownrooms"://获取自己创建的房间
                                response = Encoding.UTF8.GetBytes(string.Format("getownrooms {0}", Room.GetRooms(user.userId)));
                                await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "joinroom"://加入房间
                                string join = Room.JoinRoom(user, ulong.Parse(commands[1]));
                                if (!string.IsNullOrWhiteSpace(join))
                                {
                                    response = Encoding.UTF8.GetBytes(string.Format("joinroom {0}", join));
                                    await stream.WriteAsync(response, 0, response.Length);
                                }
                                break;
                            case "getroomusers"://获取所在房间的用户
                                response = Encoding.UTF8.GetBytes(string.Format("getroomusers {0}", User.GetUsers(user.userId, user.roomId)));
                                await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "joins"://批量加入房间
                                List<User> users = Room.BatchJoinRoom(ulong.Parse(commands[1]));
                                for (int i = 0; i < users.Count; i++)
                                {
                                    User.Send2User(users[i].userId, string.Format("send2user joins"));
                                }
                                //response = Encoding.UTF8.GetBytes(string.Format("joins {0}", joins));
                                //await stream.WriteAsync(response, 0, response.Length);
                                break;
                            case "leaveroom"://离开房间
                                string leave = Room.LeaveRoom(user);
                                if (!string.IsNullOrWhiteSpace(leave))
                                {
                                    response = Encoding.UTF8.GetBytes(string.Format("leaveroom {0}", leave));
                                    await stream.WriteAsync(response, 0, response.Length);
                                }
                                Console.WriteLine($"离开房间 {leave}");
                                break;
                            case "closeroom"://关闭房间
                                string close = Room.CloseRoom(ulong.Parse(commands[1]));
                                if (!string.IsNullOrWhiteSpace(close))
                                {
                                    response = Encoding.UTF8.GetBytes(string.Format("closeroom {0}", close));
                                    Console.WriteLine("退订：" + close);
                                    await stream.WriteAsync(response, 0, response.Length);
                                }
                                break;
                            case "send2user"://对用户说
                                User.Send2User(ulong.Parse(commands[1]), string.Format("send2user {0}", commands[2]));
                                break;
                            case "send2room"://对房间说
                                User.Send2Room(user.userId, user.roomId, string.Format("send2room {0}", commands[1]));
                                Console.WriteLine($"send2room {commands[1]}");
                                break;
                            case "send2world"://对世界说
                                User.Send2World(user, string.Format("send2world {0}", commands[1]));
                                break;
                            case "player"://对player说
                                User.Send2Player(user.userId, user.roomId, string.Format("player {0}", commands[1]));
                                break;
                        }
                    }
                }

                clients.TryRemove(clientAddress, out _);
                user.OffLine();
                Console.WriteLine($"Client disconnected: {clientAddress}");
            }
            client.Close();
        }

      
    }
}