public async Task <IMessage> ReadAndDecodeMessage(Header header, NetworkStream networkStream)
{
byte[] dataBuffer = new byte[header.MessageSize];
await networkStream.ReadAsync(dataBuffer, 0, dataBuffer.Length);
Console.WriteLine("message type being read in network service: " + header.MessageType);
var dataBufferList = dataBuffer.ToList();
switch (header.MessageType)
{
case MessageType.NotSet:
return(null);
case MessageType.Connect:
return(ConnectRequestMessage.Decode(dataBufferList));
case MessageType.Chat:
return(ChatMessage.Decode(dataBufferList));
case MessageType.Image:
return(ImageMessage.Decode(dataBufferList));
case MessageType.NewUserOnline:
return(NewUserOnlineMessage.Decode(dataBufferList));
case MessageType.UserLogoff:
return(UserLogoffMessage.Decode(dataBufferList));
case MessageType.UserOffline:
return(UserOfflineMessage.Decode(dataBufferList));
case MessageType.Typing:
return(UserTypingMessage.Decode(dataBufferList));
default:
throw new ArgumentOutOfRangeException();
}
}
public static int Main(string[] args)
{
string operation;
string input;
string output;
if (args.Length > 0)
{
if (args.Length < 3)
{
Console.WriteLine("Too few arguments.");
return(-1);
}
switch (args[0])
{
case "encode":
case "decode":
break;
default:
Console.WriteLine($"{args[0]} is not a valid operation.");
return(-2);
}
operation = args[0];
input = args[1];
output = args[2];
}
else
{
Console.Write("Do you wish to encode (e) or decode (d) a file?: ");
char option;
do
{
try
{
option = char.ToUpper(Convert.ToChar(Console.ReadLine()));
}
catch (FormatException)
{
Console.WriteLine("Invalid option!");
option = default;
}
}while (option != 'E' && option != 'D');
operation = option == 'E' ? "encode" : "decode";
Console.Write($"Enter the path to the file you wish to {operation}: ");
input = Console.ReadLine();
Console.Write($"Enter the path to where you want to save the {operation}d file: ");
output = Console.ReadLine();
}
if (operation == "encode")
{
ImageMessage.Encode(File.ReadAllText(input), output);
}
else
{
File.WriteAllText(output, ImageMessage.Decode(input));
}
Console.WriteLine("Operation completed!");
Console.ReadKey();
return(0);
}
