#include "clientmodel.h"
#include "guiconstants.h"
#include "optionsmodel.h"
#include "addresstablemodel.h"
#include "transactiontablemodel.h"

#include "main.h"
#include "ui_interface.h"

#include <QDateTime>
#include <QTimer>

static const int64 nClientStartupTime = GetTime();

ClientModel::ClientModel(OptionsModel *optionsModel, QObject *parent) :
    QObject(parent), optionsModel(optionsModel),
    cachedNumBlocks(0), cachedNumBlocksOfPeers(0), pollTimer(0)
{
    numBlocksAtStartup = -1;

    pollTimer = new QTimer();
    pollTimer->setInterval(MODEL_UPDATE_DELAY);
    pollTimer->start();
    connect(pollTimer, SIGNAL(timeout()), this, SLOT(updateTimer()));
}

int ClientModel::getNumConnections() const
{
    return vNodes.size();
}

int ClientModel::getNumBlocks() const
{
    return nBestHeight;
}

int ClientModel::getNumBlocksAtStartup()
{
    if (numBlocksAtStartup == -1) numBlocksAtStartup = getNumBlocks();
    return numBlocksAtStartup;
}

QDateTime ClientModel::getLastBlockDate() const
{
    return QDateTime::fromTime_t(pindexBest->GetBlockTime());
}

void ClientModel::updateTimer()
{
    // Some quantities (such as number of blocks) change so fast that we don't want to be notified for each change.
    // Periodically check and update with a timer.
    int newNumBlocks = getNumBlocks();
    int newNumBlocksOfPeers = getNumBlocksOfPeers();

    if(cachedNumBlocks != newNumBlocks || cachedNumBlocksOfPeers != newNumBlocksOfPeers)
        emit numBlocksChanged(newNumBlocks, newNumBlocksOfPeers);

    cachedNumBlocks = newNumBlocks;
    cachedNumBlocksOfPeers = newNumBlocksOfPeers;
}

void ClientModel::updateNumConnections(int numConnections)
{
    emit numConnectionsChanged(numConnections);
}

void ClientModel::updateAlert(const QString &hash, int status)
{
    // Show error message notification for new alert
    if(status == CT_NEW)
    {
        uint256 hash_256;
        hash_256.SetHex(hash.toStdString());
        CAlert alert = CAlert::getAlertByHash(hash_256);
        if(!alert.IsNull())
        {
            emit error(tr("Network Alert"), QString::fromStdString(alert.strStatusBar), false);
        }
    }

    // Emit a numBlocksChanged when the status message changes,
    // so that the view recomputes and updates the status bar.
    emit numBlocksChanged(getNumBlocks(), getNumBlocksOfPeers());
}

bool ClientModel::isTestNet() const
{
    return fTestNet;
}

bool ClientModel::inInitialBlockDownload() const
{
    return IsInitialBlockDownload();
}

int ClientModel::getNumBlocksOfPeers() const
{
    return GetNumBlocksOfPeers();
}

QString ClientModel::getStatusBarWarnings() const
{
    return QString::fromStdString(GetWarnings("statusbar"));
}

OptionsModel *ClientModel::getOptionsModel()
{
    return optionsModel;
}

QString ClientModel::formatFullVersion() const
{
    return QString::fromStdString(FormatFullVersion());
}

QString ClientModel::formatBuildDate() const
{
    return QString::fromStdString(CLIENT_DATE);
}

QString ClientModel::clientName() const
{
    return QString::fromStdString(CLIENT_NAME);
}

QDateTime ClientModel::formatClientStartupTime() const
{
    return QDateTime::fromTime_t(nClientStartupTime);
}