/* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
 * Software engineering by Intevation GmbH
 *
 * This file is Free Software under the GNU GPL (v>=2)
 * and comes with ABSOLUTELY NO WARRANTY!
 * See LICENSE.txt for details.
 */
#include "certificatetablemodel.h"

#include <QFont>

CertificateTabelModel::CertificateTabelModel(QObject *parent)
    : QAbstractTableModel(parent)
{
    header.append("");
    header.append(tr("Subject CN"));
    header.append(tr("Subject O"));
    header.append(tr("Issuer CN"));
    header.append(tr("Issuer O"));
    header.append(tr("Valid from"));
    header.append(tr("Valid to"));
    header.append(tr("SHA1 Fingerprint"));

}

void CertificateTabelModel::addCertificate(const Certificate& certificate,
    bool editable)
{
    beginInsertRows(QModelIndex(), rowCount(), rowCount());
    mCertificates.append(certificate);
    mCertificates.last().setEditable(editable);
    endInsertRows();
}

bool CertificateTabelModel::removeRows(int row, int count,
    const QModelIndex &index)
{
    beginRemoveRows(QModelIndex(), row, row + count - 1);
    if ((row + count - 1) > mCertificates.size()) {
        return false;
    }
    for (int i = row + count - 1; i >= row; i--) {
        mCertificates.removeAt(i);
    }
    endRemoveRows();
    return true;
}

bool CertificateTabelModel::removeAll()
{
    return removeRows(0, mCertificates.size(), QModelIndex());
}

QVariant CertificateTabelModel::data(const QModelIndex &index,
        int role) const
{
    if (index.row() > mCertificates.size() || index.row() < 0) {
        return QVariant();
    }

    if (role == Qt::DisplayRole) {
        Certificate cert = mCertificates.at(index.row());
        QVariant ret;
        switch(index.column()) {
        case 0: ret = cert.isInstallCert(); break;
        case 1: ret = cert.subjectCN(); break;
        case 2: ret = cert.subjectO(); break;
        case 3: ret = cert.issuerCN(); break;
        case 4: ret = cert.issuerO(); break;
        case 5: ret = cert.validFrom(); break;
        case 6: ret = cert.validTo(); break;
        case 7: ret = cert.fingerprint(); break;
        default: ;
        }
        return ret;
    }
    if (role == Qt::UserRole) {
        Certificate cert = mCertificates.at(index.row());
        return cert.isEditable();
    }
    if (role == Qt::FontRole && index.column() == 7) {
        QFont block("DejaVu Sans Mono");
        return block;
    }

    return QVariant();
}

bool CertificateTabelModel::setData(const QModelIndex &index,
    const QVariant &value, int role)
{
    if (index.row() > mCertificates.size() || index.row() < 0) {
        return false;
    }

    bool newValue = value.toBool();
    Certificate &cert = mCertificates[index.row()];
    if (!cert.isEditable()) {
        return false;
    }
    cert.setInstallCert(newValue);

    emit dataChanged(index, index);

    return true;
}

QVariant CertificateTabelModel::headerData(int section,
        Qt::Orientation orientation, int role) const
{
    if (orientation == Qt::Horizontal && role == Qt::DisplayRole) {
        return header.at(section);
    }
    return QVariant();
}

int CertificateTabelModel::rowCount(const QModelIndex&) const
{
    return mCertificates.size();
}

int CertificateTabelModel::columnCount(const QModelIndex&) const
{
    return header.size();
}

Qt::ItemFlags CertificateTabelModel::flags(const QModelIndex &index) const
{
    if (!index.isValid ())
        return Qt::ItemIsSelectable;

    if (index.column() == 0) {
        return QAbstractTableModel::flags(index) | Qt::ItemIsEditable;
    }

    return QAbstractTableModel::flags(index);
}