private void JoinRoomHandler(ClientJoinRoomRequest command, int streamId, CommandAnswerContext answerContext)
{
var result = new ServerResponseBase();
UserContext ctx = null;
var room = command.RoomName;
lock (_users)
{
ctx = ValidateUser(streamId, answerContext, result);
if (answerContext.Answered)
{
return;
}
if (ctx.Rooms.Contains(room))
{
result.Status = ServerResponseStatus.Error;
result.Description = $"Already in room {room}";
answerContext.TryAnswer(result);
return;
}
ctx.Rooms.Add(room);
}
result.Status = ServerResponseStatus.Success;
answerContext.TryAnswer(result);
_commandHandler.Notify(new ServerServiceMessage()
{
Message = $"{ctx.Name}, welcome to '{room}'!"
}, streamId);
}
private void OnServiceMessage(ServerServiceMessage command, int streamId, CommandAnswerContext answerContext)
{
if (command.RoomNames == null || command.RoomNames.Length < 1)
{
Console.WriteLine($"Service message: {command.Message}");
}
else
{
for (var i = 0; i < command.RoomNames.Length; ++i)
{
var r = command.RoomNames[i];
Console.WriteLine($"{r}: Service message: {command.Message}");
}
}
}
private UserContext ValidateUser(int streamId, CommandAnswerContext answerContext, ServerResponseBase responseBase)
{
lock (_users)
{
var ctx = _users.FirstOrDefault(u => u.Stream == streamId);
if (ctx == null)
{
responseBase.Status = ServerResponseStatus.Error;
responseBase.Description = "User not logged in";
answerContext.TryAnswer(responseBase);
return(null);
}
return(ctx);
}
}
private void ListRoomsHandler(ClientListRoomsRequest command, int streamId, CommandAnswerContext answerContext)
{
var result = new ServerListRoomsResponse();
lock (_users)
{
var ctx = ValidateUser(streamId, answerContext, result);
if (answerContext.Answered)
{
return;
}
var allRooms = _users.SelectMany(_ => _.Rooms).Distinct().ToArray();
result.RoomNames = allRooms;
answerContext.TryAnswer(result);
}
}
private void LoginHandler(ClientLoginRequest command, int streamId, CommandAnswerContext answerContext)
{
var result = new ServerLoginResponse();
if (string.IsNullOrEmpty(command.UserName))
{
result.Status = ServerResponseStatus.Error;
result.Description = "Invalid name";
answerContext.TryAnswer(result);
return;
}
var name = command.UserName;
lock (_users)
{
if (_users.Any(u => u.Name == name))
{
result.Status = ServerResponseStatus.Error;
result.Description = $"User with name '{name}' already logged in";
answerContext.TryAnswer(result);
return;
}
var ctx = new UserContext
{
Name = command.UserName,
Rooms = new List <string>(),
Stream = streamId
};
_users.Add(ctx);
}
result.Status = ServerResponseStatus.Success;
answerContext.TryAnswer(result);
_commandHandler.Notify(new ServerServiceMessage()
{
Message = $"Hello, {name}!"
}, streamId);
}
private void OnRoomMessage(ServerRoomMessage command, int streamId, CommandAnswerContext answerContext)
{
Console.WriteLine($"{command.Room}:{command.FromUser}: {command.Message}");
}
private void ListRoomUsersRequest(ClientListRoomUsersRequest command, int streamId, CommandAnswerContext answerContext)
{
var result = new ServerListRoomUsersResponse();
lock (_users)
{
var ctx = ValidateUser(streamId, answerContext, result);
if (answerContext.Answered)
{
return;
}
var usersInRoom = _users.Where(_ => _.Rooms.Contains(command.RoomName)).Select(_ => _.Name).ToArray();
result.UsersNames = usersInRoom;
answerContext.TryAnswer(result);
}
}
private void RoomMessageHandler(ClientSendMessageToRoom command, int streamId, CommandAnswerContext answerContext)
{
var result = new ServerResponseBase();
var message = command.Message;
var room = command.Room;
lock (_users)
{
var ctx = ValidateUser(streamId, answerContext, result);
if (answerContext.Answered)
{
return;
}
if (!ctx.Rooms.Contains(room))
{
result.Status = ServerResponseStatus.Error;
result.Description = $"You not in the room '{room}'!";
answerContext.TryAnswer(result);
return;
}
var dests = _users.Where(u => u.Rooms.Contains(room)).Select(u => u.Stream).ToArray();
var messageCmd = new ServerRoomMessage
{
FromUser = ctx.Name,
Message = message,
Room = room
};
_commandHandler.Notify(messageCmd, dests);
}
}
