/*
   Copyright (C) 2013-2016 Montel Laurent <montel@kde.org>

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "importnotesjob.h"
#include "archivestorage.h"

#include "PimCommon/CreateResource"

#include <KArchive>
#include <KLocalizedString>

#include <KZip>
#include <KConfigGroup>

#include <QFile>
#include <QStandardPaths>
#include <QDir>
#include <QTimer>

namespace
{
inline const QString backupnote()
{
    return QStringLiteral("backupnote/");
}
}

ImportNotesJob::ImportNotesJob(QObject *parent, Utils::StoredTypes typeSelected, ArchiveStorage *archiveStorage, int numberOfStep)
    : AbstractImportExportJob(parent, archiveStorage, typeSelected, numberOfStep)
{
    initializeImportJob();
}

ImportNotesJob::~ImportNotesJob()
{
}

void ImportNotesJob::slotNextStep()
{
    ++mIndex;
    if (mIndex < mListStep.count()) {
        const Utils::StoredType type = mListStep.at(mIndex);
        if (type == Utils::Resources) {
            restoreResources();
        } else if (type == Utils::Config) {
            restoreConfig();
        } else if (type == Utils::Data) {
            restoreData();
        } else {
            qCDebug(PIMSETTINGEXPORTERCORE_LOG) << Q_FUNC_INFO << " not supported type " << type;
            slotNextStep();
        }
    } else {
        Q_EMIT jobFinished();
    }
}

void ImportNotesJob::start()
{
    Q_EMIT title(i18n("Starting to import KNotes settings..."));
    mArchiveDirectory = archive()->directory();
    // FIXME search archive ? searchAllFiles(mArchiveDirectory, QString());
    createProgressDialog(i18n("Import KNotes settings"));
    initializeListStep();
    QTimer::singleShot(0, this, &ImportNotesJob::slotNextStep);
}

void ImportNotesJob::restoreConfig()
{
    increaseProgressDialog();
    setProgressDialogLabel(i18n("Restore configs..."));
    const QString knotesStr(QStringLiteral("knotesrc"));
    restoreConfigFile(knotesStr);
    if (archiveVersion() <= 1) {
        const QString globalNoteSettingsStr(QStringLiteral("globalnotesettings"));
        restoreConfigFile(globalNoteSettingsStr);
    } else {
        const QString globalNoteStr(QStringLiteral("globalnotesettings"));
        const KArchiveEntry *globalNotecentry  = mArchiveDirectory->entry(Utils::configsPath() + globalNoteStr);
        if (globalNotecentry && globalNotecentry->isFile()) {
            const KArchiveFile *globalNotecentryrc = static_cast<const KArchiveFile *>(globalNotecentry);
            const QString globalNoterc = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) + QLatin1Char('/') + globalNoteStr;
            if (QFile(globalNoterc).exists()) {
                if (overwriteConfigMessageBox(globalNoteStr)) {
                    importKNoteGlobalSettings(globalNotecentryrc, globalNoterc, globalNoteStr, Utils::configsPath());
                }
            } else {
                importKNoteGlobalSettings(globalNotecentryrc, globalNoterc, globalNoteStr, Utils::configsPath());
            }
        }

    }

    restoreUiRcFile(QStringLiteral("knotesappui.rc"), QStringLiteral("knotes"));
    restoreUiRcFile(QStringLiteral("knotesui.rc"), QStringLiteral("knotes"));
    restoreUiRcFile(QStringLiteral("knotes_part.rc"), QStringLiteral("knotes"));
    restoreConfigFile(QStringLiteral("akonadi_notes_agent.notifyrc"));

    Q_EMIT info(i18n("Config restored."));
    QTimer::singleShot(0, this, &ImportNotesJob::slotNextStep);
}

void ImportNotesJob::restoreData()
{
    increaseProgressDialog();
    setProgressDialogLabel(i18n("Restore data..."));
    if (archiveVersion() <= 1) {
        //Knote < knote-akonadi
        const KArchiveEntry *notesEntry  = mArchiveDirectory->entry(Utils::dataPath() + QLatin1String("knotes/"));
        if (notesEntry && notesEntry->isDirectory()) {
            const QString notesPath = QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation) + QLatin1Char('/') + QLatin1String("knotes/");
            overwriteDirectory(notesPath, notesEntry);
        }
        QTimer::singleShot(0, this, &ImportNotesJob::slotNextStep);
    } else {
        restoreResources();
    }
    importDataSubdirectory(QStringLiteral("/knotes/print/theme/"));
    Q_EMIT info(i18n("Data restored."));
}

void ImportNotesJob::restoreResources()
{
    Q_EMIT info(i18n("Restore resources..."));
    setProgressDialogLabel(i18n("Restore resources..."));
    QStringList listResource;
    if (!mListResourceFile.isEmpty()) {
        QDir dir(mTempDirName);
        dir.mkdir(Utils::jotPath());
        const QString copyToDirName(mTempDirName + QLatin1Char('/') + Utils::notePath());
        const int numberOfResourceFile = mListResourceFile.size();
        for (int i = 0; i < numberOfResourceFile; ++i) {
            resourceFiles value = mListResourceFile.at(i);
            QMap<QString, QVariant> settings;
            if (value.akonadiConfigFile.contains(QStringLiteral("akonadi_akonotes_resource_"))) {
                const KArchiveEntry *fileResouceEntry = mArchiveDirectory->entry(value.akonadiConfigFile);
                if (fileResouceEntry && fileResouceEntry->isFile()) {
                    const KArchiveFile *file = static_cast<const KArchiveFile *>(fileResouceEntry);
                    file->copyTo(copyToDirName);
                    QString resourceName(file->name());

                    QString filename(file->name());
                    //TODO adapt filename otherwise it will use all the time the same filename.
                    qCDebug(PIMSETTINGEXPORTERCORE_LOG) << " filename :" << filename;

                    KSharedConfig::Ptr resourceConfig = KSharedConfig::openConfig(copyToDirName + QLatin1Char('/') + resourceName);

                    const QString newUrl = Utils::adaptResourcePath(resourceConfig, backupnote());
                    QFileInfo newUrlInfo(newUrl);
                    const QString dataFile = value.akonadiResources;
                    const KArchiveEntry *dataResouceEntry = mArchiveDirectory->entry(dataFile);
                    if (dataResouceEntry->isFile()) {
                        const KArchiveFile *file = static_cast<const KArchiveFile *>(dataResouceEntry);
                        //TODO  adapt directory name too
                        extractZipFile(file, copyToDirName, newUrlInfo.path());
                    }
                    settings.insert(QStringLiteral("Path"), newUrl);

                    const QString agentConfigFile = value.akonadiAgentConfigFile;
                    if (!agentConfigFile.isEmpty()) {
                        const KArchiveEntry *akonadiAgentConfigEntry = mArchiveDirectory->entry(agentConfigFile);
                        if (akonadiAgentConfigEntry->isFile()) {
                            const KArchiveFile *file = static_cast<const KArchiveFile *>(akonadiAgentConfigEntry);
                            file->copyTo(copyToDirName);
                            resourceName = file->name();
                            filename = Utils::akonadiAgentName(copyToDirName + QLatin1Char('/') + resourceName);
                        }
                    }

                    const QString newResource = mCreateResource->createResource(QStringLiteral("akonadi_akonotes_resource"), filename, settings, true);
                    infoAboutNewResource(newResource);
                    qCDebug(PIMSETTINGEXPORTERCORE_LOG) << " newResource" << newResource;
                    listResource << newResource;
                }
            }
        }
    }
    //It's maildir support. Need to add support
    startSynchronizeResources(listResource);
}

void ImportNotesJob::importKNoteGlobalSettings(const KArchiveFile *archive, const QString &configrc, const QString &filename, const QString &prefix)
{
    copyToFile(archive, configrc, filename, prefix);
    KSharedConfig::Ptr kmailConfig = KSharedConfig::openConfig(configrc);

    const QString composerStr(QStringLiteral("SelectNoteFolder"));
    if (kmailConfig->hasGroup(composerStr)) {
        KConfigGroup composerGroup = kmailConfig->group(composerStr);
        const QString previousStr(QStringLiteral("DefaultFolder"));
        convertRealPathToCollection(composerGroup, previousStr);
    }
    kmailConfig->sync();
}
