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#include "addtorrentdialog.h"

#include "metainfo.h"

#include <QFile>

#include <QFileDialog>

#include <QLineEdit>

#include <QMetaObject>

static QString stringNumber(qint64 number)

{

    QString tmp;

    if (number > (1024 * 1024 * 1024))

        tmp.sprintf("%.2fGB", number / (1024.0 * 1024.0 * 1024.0));

    else if (number > (1024 * 1024))

        tmp.sprintf("%.2fMB", number / (1024.0 * 1024.0));

    else if (number > (1024))

        tmp.sprintf("%.2fKB", number / (1024.0));

    else

        tmp.sprintf("%d bytes", int(number));

    return tmp;

}

AddTorrentDialog::AddTorrentDialog(QWidget *parent)

  : QDialog(parent, Qt::Sheet)

{

    ui.setupUi(this);

    connect(ui.browseTorrents, SIGNAL(clicked()),

            this, SLOT(selectTorrent()));

    connect(ui.browseDestination, SIGNAL(clicked()),

            this, SLOT(selectDestination()));

    connect(ui.torrentFile, SIGNAL(textChanged(QString)),

            this, SLOT(setTorrent(QString)));

    ui.destinationFolder->setText(destinationDirectory = QDir::current().path());

    ui.torrentFile->setFocus();

}

void AddTorrentDialog::selectTorrent()

{

    QString fileName = QFileDialog::getOpenFileName(this, tr("Choose a torrent file"),

                                                    lastDirectory,

                                                    tr("Torrents (*.torrent);; All files (*.*)"));

    if (fileName.isEmpty())

        return;

    lastDirectory = QFileInfo(fileName).absolutePath();

    setTorrent(fileName);

}

void AddTorrentDialog::selectDestination()

{

    QString dir = QFileDialog::getExistingDirectory(this, tr("Choose a destination directory"),

                                                    lastDestinationDirectory);

    if (dir.isEmpty())

        return;

    lastDestinationDirectory = destinationDirectory = dir;

    ui.destinationFolder->setText(destinationDirectory);

    enableOkButton();

}

void AddTorrentDialog::enableOkButton()

{

    ui.okButton->setEnabled(!ui.destinationFolder->text().isEmpty()

                            && !ui.torrentFile->text().isEmpty());

}

void AddTorrentDialog::setTorrent(const QString &torrentFile)

{

    if (torrentFile.isEmpty()) {

        enableOkButton();

        return;

    }

    ui.torrentFile->setText(torrentFile);

    if (!torrentFile.isEmpty())

        lastDirectory = QFileInfo(torrentFile).absolutePath();

    if (lastDestinationDirectory.isEmpty())

        lastDestinationDirectory = lastDirectory;

    MetaInfo metaInfo;

    QFile torrent(torrentFile);

    if (!torrent.open(QFile::ReadOnly) || !metaInfo.parse(torrent.readAll())) {

        enableOkButton();

        return;

    }

    ui.torrentFile->setText(torrentFile);

    ui.announceUrl->setText(metaInfo.announceUrl());

    if (metaInfo.comment().isEmpty())

        ui.commentLabel->setText("<unknown>");

    else

        ui.commentLabel->setText(metaInfo.comment());

    if (metaInfo.createdBy().isEmpty())

        ui.creatorLabel->setText("<unknown>");

    else

        ui.creatorLabel->setText(metaInfo.createdBy());

    ui.sizeLabel->setText(stringNumber(metaInfo.totalSize()));

    if (metaInfo.fileForm() == MetaInfo::SingleFileForm) {

        ui.torrentContents->setHtml(metaInfo.singleFile().name);

    } else {

        QString html;

        foreach (MetaInfoMultiFile file, metaInfo.multiFiles()) {

            QString name = metaInfo.name();

            if (!name.isEmpty()) {

                html += name;

                if (!name.endsWith('/'))

                    html += '/';

            }

            html += file.path + "<br>";

        }

        ui.torrentContents->setHtml(html);

    }

    QFileInfo info(torrentFile);

    ui.destinationFolder->setText(info.absolutePath());

    enableOkButton();

}

QString AddTorrentDialog::torrentFileName() const

{

    return ui.torrentFile->text();

}

QString AddTorrentDialog::destinationFolder() const

{

    return ui.destinationFolder->text();

}