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#include <QtNetwork>

#include "client.h"

#include "connection.h"

#include "peermanager.h"

Client::Client()

{

    peerManager = new PeerManager(this);

    peerManager->setServerPort(server.serverPort());

    peerManager->startBroadcasting();

    QObject::connect(peerManager, SIGNAL(newConnection(Connection*)),

                     this, SLOT(newConnection(Connection*)));

    QObject::connect(&server, SIGNAL(newConnection(Connection*)),

                     this, SLOT(newConnection(Connection*)));

}

void Client::sendMessage(const QString &message)

{

    if (message.isEmpty())

        return;

    QList<Connection *> connections = peers.values();

    foreach (Connection *connection, connections)

        connection->sendMessage(message);

}

QString Client::nickName() const

{

    return QString(peerManager->userName()) + '@' + QHostInfo::localHostName()

           + ':' + QString::number(server.serverPort());

}

bool Client::hasConnection(const QHostAddress &senderIp, int senderPort) const

{

    if (senderPort == -1)

        return peers.contains(senderIp);

    if (!peers.contains(senderIp))

        return false;

    QList<Connection *> connections = peers.values(senderIp);

    foreach (Connection *connection, connections) {

        if (connection->peerPort() == senderPort)

            return true;

    }

    return false;

}

void Client::newConnection(Connection *connection)

{

    connection->setGreetingMessage(peerManager->userName());

    connect(connection, SIGNAL(error(QAbstractSocket::SocketError)),

            this, SLOT(connectionError(QAbstractSocket::SocketError)));

    connect(connection, SIGNAL(disconnected()), this, SLOT(disconnected()));

    connect(connection, SIGNAL(readyForUse()), this, SLOT(readyForUse()));

}

void Client::readyForUse()

{

    Connection *connection = qobject_cast<Connection *>(sender());

    if (!connection || hasConnection(connection->peerAddress(),

                                     connection->peerPort()))

        return;

    connect(connection, SIGNAL(newMessage(QString,QString)),

            this, SIGNAL(newMessage(QString,QString)));

    peers.insert(connection->peerAddress(), connection);

    QString nick = connection->name();

    if (!nick.isEmpty())

        emit newParticipant(nick);

}

void Client::disconnected()

{

    if (Connection *connection = qobject_cast<Connection *>(sender()))

        removeConnection(connection);

}

void Client::connectionError(QAbstractSocket::SocketError /* socketError */)

{

    if (Connection *connection = qobject_cast<Connection *>(sender()))

        removeConnection(connection);

}

void Client::removeConnection(Connection *connection)

{

    if (peers.contains(connection->peerAddress())) {

        peers.remove(connection->peerAddress());

        QString nick = connection->name();

        if (!nick.isEmpty())

            emit participantLeft(nick);

    }

    connection->deleteLater();

}