/// <summary>
/// Class handling request to log in.
/// </summary>
public void handleRequest(List <IClientHandler> allHandlers, IServerChatSystem chatSystem,
IClientHandler handlerThread, byte[] messageBytes)
{
Console.WriteLine("DEBUG: {0} request received", "logIn");
//decoding request - all bytes are user name under which they want to log in
string userName = Encoding.UTF8.GetString(messageBytes);
Console.WriteLine("DEBUG: requested logIn");
byte[] reply = new byte[1024 * 256];
lock (allHandlers)
{
IUser user = chatSystem.GetUser(userName);
if (handlerThread.HandledUserName != null || user == null ||
allHandlers.Exists(h => h.HandledUserName == userName))
{
//if this client is already logged in or there is no user with this user name or this user is already logged in
reply[0] = 0; //indicate that log in failed
}
else
{
reply[0] = 1;
handlerThread.HandledUserName = userName;
// Send serialized User, so that the client can know the user's name and id
var serializedUser = (chatSystem.GetUser(userName) as User)
.Serialize(new ConcreteSerializer()).ToArray();
Array.Copy(serializedUser, 0, reply, 1, serializedUser.Length);
//if login successful, send to this client all conversations in which this user takes part.
foreach (var conversation in user.Conversations)
{
byte[] msg = conversation.Serialize(new ConcreteSerializer()).ToArray();
handlerThread.sendMessage(5, msg);
}
}
}
handlerThread.sendMessage(1, reply);
}
/// <summary>
/// Class handling request to send info about particular user.
/// </summary>
public void handleRequest(List <IClientHandler> allHandlers, IServerChatSystem chatSystem,
IClientHandler handlerThread, byte[] messageBytes)
{
Console.WriteLine("DEBUG: {0} request received", "send message");
//decoding request - first 4 bytes are id of conversation, next 4 are id of message to which we reply the rest are message content bytes
Guid requestedUserId = new Guid(messageBytes);
Console.WriteLine("DEBUG: trying to send message");
byte[] reply = new byte[1];
lock (allHandlers)
{
IUser requestingUser = chatSystem.GetUser(handlerThread.HandledUserName);
IUser user =
chatSystem.FindUser(requestedUserId);
if (user != null)
{
// Check if exists at least one common conversation of these two users
IEnumerable <Conversation> commonConversations =
chatSystem.getConversationsOfUser(handlerThread.HandledUserName);
bool canRespond =
commonConversations.Any(conversation => conversation.Users.Any(u => u.ID == requestedUserId));
if (canRespond)
{
reply[0] = 1;
byte[] msg = user.Serialize(new ConcreteSerializer()).ToArray();
handlerThread.sendMessage(7, msg); //sent message - type 7
}
else
{
reply[0] = 0;
}
}
else
{
reply[0] = 0;
}
}
handlerThread.sendMessage(1, reply);
}