#include <QtCore/qtimer.h>
#include <QtCore/qdebug.h>
#include <QVBoxLayout>
#include <QPushButton>
#include <QLineEdit>
#include <QTabWidget>
#include <QSpinBox>
#include <QLabel>

#include "canvasframerate.h"
#include "engine.h"
#include "qmldebugger.h"

QmlDebugger::QmlDebugger(QWidget *parent)
: QWidget(parent)
{
    QVBoxLayout *layout = new QVBoxLayout;
    setLayout(layout);


    QHBoxLayout *connectLayout = new QHBoxLayout;
    layout->addLayout(connectLayout);
    connectLayout->addStretch(2);

    m_connectionState = new QLabel(this);
    connectLayout->addWidget(m_connectionState);
    m_host = new QLineEdit(this);
    m_host->setText("127.0.0.1");
    connectLayout->addWidget(m_host);
    m_port = new QSpinBox(this);
    m_port->setMinimum(1024);
    m_port->setMaximum(20000);
    m_port->setValue(3768);
    connectLayout->addWidget(m_port);
    m_connectButton = new QPushButton(tr("Connect"), this);
    QObject::connect(m_connectButton, SIGNAL(clicked()), 
                     this, SLOT(connectToHost()));
    connectLayout->addWidget(m_connectButton);
    m_disconnectButton = new QPushButton(tr("Disconnect"), this);
    QObject::connect(m_disconnectButton, SIGNAL(clicked()), 
                     this, SLOT(disconnectFromHost()));
    m_disconnectButton->setEnabled(false);
    connectLayout->addWidget(m_disconnectButton);

    m_tabs = new QTabWidget(this);
    layout->addWidget(m_tabs);

    CanvasFrameRate *cfr = new CanvasFrameRate(this);
    cfr->reset(&client);
    cfr->setSizeHint(QSize(800, 600));
    m_tabs->addTab(cfr, tr("Frame Rate"));

    m_enginePane = new EnginePane(&client, this);
    m_tabs->addTab(m_enginePane, tr("QML Engine"));

    QObject::connect(&client, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
                     this, SLOT(connectionStateChanged()));
    connectionStateChanged();

    QObject::connect(&client, SIGNAL(error(QAbstractSocket::SocketError)),
                     this, SLOT(connectionError(QAbstractSocket::SocketError)));

    m_tabs->setCurrentIndex(1);
}

void QmlDebugger::setHost(const QString &host)
{
    m_host->setText(host);
}

void QmlDebugger::setPort(quint16 port)
{
    m_port->setValue(port);
}

void QmlDebugger::showEngineTab()
{
    m_tabs->setCurrentWidget(m_enginePane);
}

void QmlDebugger::connectionStateChanged()
{
    switch (client.state()) {
    default:
    case QAbstractSocket::UnconnectedState:
        m_connectionState->setText(tr("Disconnected"));
        m_connectButton->setEnabled(true);
        m_disconnectButton->setEnabled(false);
        break;
    case QAbstractSocket::HostLookupState:
        m_connectionState->setText(tr("Resolving"));
        m_connectButton->setEnabled(false);
        m_disconnectButton->setEnabled(true);
        break;
    case QAbstractSocket::ConnectingState:
        m_connectionState->setText(tr("Connecting"));
        m_connectButton->setEnabled(false);
        m_disconnectButton->setEnabled(true);
        break;
    case QAbstractSocket::ConnectedState:
        m_connectionState->setText(tr("Connected"));
        m_connectButton->setEnabled(false);
        m_disconnectButton->setEnabled(true);

        QTimer::singleShot(0, m_enginePane, SLOT(refreshEngines()));
        break;
    case QAbstractSocket::ClosingState:
        m_connectionState->setText(tr("Closing"));
        m_connectButton->setEnabled(false);
        m_disconnectButton->setEnabled(false);
        break;
    }
}

void QmlDebugger::connectionError(QAbstractSocket::SocketError socketError)
{
    qWarning() << "qmldebugger cannot connect:" << socketError
            << client.errorString();
}

void QmlDebugger::connectToHost()
{
    client.connectToHost(m_host->text(), m_port->value());
}

void QmlDebugger::disconnectFromHost()
{
    client.disconnectFromHost();
}