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/***************************************************************************
 *   Copyright (C) January 4, 2009 by Mattias Runge                             *
 *   mattias@runge.se                                                      *
 *   server.cpp                                            *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "server.h"

Server::Server(int port, string name)
{
    setSettings(port, name);
}

Server::~Server()
{
    stop();

    for (map<int, AsyncSocket*>::iterator iter = myClientSockets.begin(); iter != myClientSockets.end(); iter++)
    {
        if (iter->second->isConnected())
        {
            iter->second->stop();
        }

        delete iter->second;
    }
}

void Server::setSettings(int port, string name)
{
    myName = name;
    mySocket.setPort(port);
}

void Server::run()
{
    SyslogStream &slog = SyslogStream::getInstance();

    try
    {
        mySocket.startListen();

        slog << myName + " is listening for connections on port " + itos(mySocket.getPort()) + ".\n";

        while (true)
        {
            AsyncSocket *newSocket = new AsyncSocket();

            if (mySocket.accept(newSocket))
            {
                newSocket->sendData("Welcome to Atom " + ftos(VERSION) + " - " + myName + "\n");

                slog << myName + " accepted new client with id " + itos(newSocket->getId()) + ".\n";
                myClientSockets[newSocket->getId()] = newSocket;
                myClientSockets[newSocket->getId()]->eventSetCallback(this);
                myClientSockets[newSocket->getId()]->start();
            }
        }
    }
    catch (SocketException* e)
    {
        slog << myName + " caught an exception:" + e->getDescription() + ".\n";
    }
}

void Server::sendToAll(string data)
{
    SyslogStream &slog = SyslogStream::getInstance();

    for (map<int, AsyncSocket*>::iterator iter = myClientSockets.begin(); iter != myClientSockets.end(); iter++)
    {
        if (iter->second->isConnected())
        {
            //slog << "Server: sent data to client " + itos(iter->second->getSocket()) + ".\n";

            try
            {
                iter->second->sendData(data);
            }
            catch (SocketException* e)
            {
                slog << myName + " caught an exception:" + e->getDescription() + ".\n";
            }
        }
        else
        {
            slog << myName + " had a client disconnect.\n";
            delete iter->second;
            myClientSockets.erase(iter);
        }
    }
}

void Server::sendTo(int id, string data)
{
    SyslogStream &slog = SyslogStream::getInstance();

    if (myClientSockets.find(id) != myClientSockets.end())
    {
        if (myClientSockets[id]->isConnected())
        {
            //slog << "Server: sent data to client " + itos(iter->second->getSocket()) + ".\n";

            try
            {
                myClientSockets[id]->sendData(data);
            }
            catch (SocketException* e)
            {
                slog << myName + " caught an exception:" + e->getDescription() + ".\n";
            }
        }
        else
        {
            slog << myName + " had a client disconnect.\n";
            delete myClientSockets[id];
            myClientSockets.erase(id);
        }
    }
}

void Server::disconnectClient(int id)
{
    SyslogStream &slog = SyslogStream::getInstance();

    if (myClientSockets.find(id) != myClientSockets.end())
    {
        slog << myName + " had a client disconnect.\n";
        delete myClientSockets[id];
        myClientSockets.erase(id);
    }
}

void Server::handleEvent(int id, SocketEvent socketEvent)
{
    switch (socketEvent.getType())
    {
        case SocketEvent::TYPE_CONNECTION_CLOSED:
        case SocketEvent::TYPE_CONNECTION_DIED:
        case SocketEvent::TYPE_CONNECTION_RESET:
        disconnectClient(id);
        break;

        case SocketEvent::TYPE_DATA:
        handleClientData(id, socketEvent.getData());
        break;
    }
}

void Server::handleClientData(int id, string data)
{
    SyslogStream &slog = SyslogStream::getInstance();
    slog << myName + " received data from client " + itos(id) + ": \"" + data + "\"\n";
}