#include "NetworkSession.hh"

#include <cassert>

NetworkSession::NetworkSession (uint64_t magic) :
    magic(magic), tcp_srv(NULL), udp_srv(NULL), udp_client(NULL) {
   
    // nothing
}
        
void NetworkSession::listen (const NetworkAddress &addr) {
    assert(tcp_srv == NULL && udp_srv == NULL);
    
    // create TCP/UDP servers
    tcp_srv = new NetworkTCPServer(addr);
    udp_srv = new NetworkUDP(addr);
    
    // connect signals
    slots.connect(tcp_srv->sig_client(), this, &NetworkSession::on_tcp_client);
}
        
NetworkNode *NetworkSession::build_node (NetworkTCPTransport *tcp, NetworkUDP *udp, const NetworkAddress &addr, enum NetworkNodeType type) {
    // XXX: unused
    (void) type;

    // create node
    return new NetworkNode(*this, tcp, udp, addr);
}

NetworkNode* NetworkSession::connect (const NetworkAddress &addr) {
    // create new UDP client if needed
    if (udp_client == NULL)
        udp_client = new NetworkUDP();

    // connect
    NetworkTCPClient *tcp_client = new NetworkTCPClient(addr);
    
    // build client
    NetworkNode *client_node = build_node(tcp_client, udp_client, addr, NETWORK_NODE_CLIENT_SERVER);

    // add to nodes
    nodes[addr] = client_node;
    
    // return the "server" node
    return client_node;
}
        
void NetworkSession::on_tcp_client (NetworkTCPTransport *tcp_client) {
    // get remote address manually, because NetworkTCPServer doesn't pass it in to us
    NetworkAddress addr = tcp_client->getRemoteAddress();

    // build client
    NetworkNode *client_node = build_node(tcp_client, udp_srv, addr, NETWORK_NODE_SERVER_CLIENT);

    // add to nodes
    nodes[addr] = client_node;

    // fire signals
    _sig_node_connected(client_node);
}
        
void NetworkSession::handle_disconnect (NetworkNode *node) {
    // remove from nodes
    nodes.erase(node->getRemoteAddress());
}
        
void NetworkSession::send_all (NetworkChannelID channel_id, const NetworkPacket &pkt, bool reliable) {
    send_all_except(channel_id, pkt, NULL, reliable);
}
        
void NetworkSession::send_all_except (NetworkChannelID channel_id, const NetworkPacket &pkt, const NetworkNode *node, bool reliable) {
    for (std::map<NetworkAddress, NetworkNode*>::iterator it = nodes.begin(); it != nodes.end(); it++) {
        if (it->second == node)
            continue;

        it->second->send(channel_id, pkt, reliable);
    }
}