/****************************************************************************

**

** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

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** ensure the GNU Lesser General Public License version 2.1 requirements

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****************************************************************************/

#include "qmessagemanager.h"

#include "qmessagestore_p.h"

#include "qmessage_p.h"

#include "qmessageid_p.h"

#include "qmessagefolderid_p.h"

#include "qmessageaccountid_p.h"

#include "qmessageaccount_p.h"

#include "qmessagecontentcontainer.h"

#include "winhelpers_p.h"

#include <QCoreApplication>

#include <QMutex>

#include <qdebug.h>

#include <QThread>

QTM_BEGIN_NAMESPACE

namespace {

class MutexTryLocker

{

    QMutex *_mutex;

    QString _location;

public:

    MutexTryLocker(QMutex *mutex)

        : _mutex(0)

    {

        if (mutex->tryLock()) {

            _mutex = mutex;

        }

    }

    ~MutexTryLocker()

    {

        if (_mutex) {

            _mutex->unlock();

            QMessageManager::Error le = QMessageManager::NoError;

            MapiSessionPtr p = MapiSession::createSession(&le);

            if(le == QMessageManager::NoError)

                p->flushNotifyQueue();

        }

    }

    operator bool() const

    {

        return (_mutex != 0);

    }

};

}

class QMessageStorePrivatePlatform : public QObject

{

    Q_OBJECT

public:

    QMessageStorePrivatePlatform(QMessageStorePrivate *d, QMessageStore *q);

    ~QMessageStorePrivatePlatform();

    QMessageStorePrivate *d_ptr;

    QMessageStore *q_ptr;

    QMessageManager::Error error;

    MapiSessionPtr session;

    QMutex mutex;

private slots:

    void appDestroyed();

};

QMessageStorePrivatePlatform::QMessageStorePrivatePlatform(QMessageStorePrivate *d, QMessageStore *q)

    :d_ptr(d),

     q_ptr(q),

     error(QMessageManager::NoError),

     session(MapiSession::createSession(&error)),

     mutex(QMutex::Recursive)

{

    connect(QCoreApplication::instance(), SIGNAL(destroyed()), this, SLOT(appDestroyed()));

    if (session && (error == QMessageManager::NoError)) {

        MapiSession *o(session.data());

        connect(o, SIGNAL(messageAdded(QMessageId, QMessageManager::NotificationFilterIdSet)), q, SIGNAL(messageAdded(QMessageId, QMessageManager::NotificationFilterIdSet)));

        connect(o, SIGNAL(messageRemoved(QMessageId, QMessageManager::NotificationFilterIdSet)), q, SIGNAL(messageRemoved(QMessageId, QMessageManager::NotificationFilterIdSet)));

        connect(o, SIGNAL(messageUpdated(QMessageId, QMessageManager::NotificationFilterIdSet)), q, SIGNAL(messageUpdated(QMessageId, QMessageManager::NotificationFilterIdSet)));

    }

}

QMessageStorePrivatePlatform::~QMessageStorePrivatePlatform()

{

}

void QMessageStorePrivatePlatform::appDestroyed()

{

    // We need to terminate our session before main finishes

    session.clear();

}

QMessageStorePrivate::QMessageStorePrivate()

    :p_ptr(0),

     q_ptr(0)

{

}

QMessageStorePrivate::~QMessageStorePrivate()

{

    delete p_ptr;

}

void QMessageStorePrivate::initialize(QMessageStore *store)

{

    q_ptr = store;

    p_ptr = new QMessageStorePrivatePlatform(this, store);

}

#ifdef Q_OS_WIN

QMutex* QMessageStorePrivate::mutex(QMessageStore* store)

{

    return &(store->d_ptr->p_ptr->mutex);

}

QMutex* QMessageStorePrivate::mutex(QMessageManager& manager)

{

    return &(manager.store->d_ptr->p_ptr->mutex);

}

#endif

Q_GLOBAL_STATIC(QMessageStorePrivate,data);

QMessageStore::QMessageStore(QObject *parent)

    : QObject(parent),

      d_ptr(data())

{

    Q_ASSERT(d_ptr != 0);

    Q_ASSERT(d_ptr->q_ptr == 0); // QMessageStore should be singleton

}

QMessageStore::~QMessageStore()

{

    d_ptr = 0; // should be cleaned up by automatically

}

QMessageStore* QMessageStore::instance()

{

    QMessageStorePrivate *d = data();

    Q_ASSERT(d != 0);

    if (!d->q_ptr) {

        d->initialize(new QMessageStore());

    }

    return d->q_ptr;

}

QMessageManager::Error QMessageStore::error() const

{

    return d_ptr->p_ptr->error;

}

QMessageIdList QMessageStore::queryMessages(const QMessageFilter &filter, const QMessageSortOrder &sortOrder, uint limit, uint offset) const

{

    QMessageIdList result;

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

        result = d_ptr->p_ptr->session->queryMessages(&d_ptr->p_ptr->error, filter, sortOrder, limit, offset);

    }

    return result;

}

QMessageIdList QMessageStore::queryMessages(const QMessageFilter &filter, const QString &body, QMessageDataComparator::MatchFlags matchFlags, const QMessageSortOrder &sortOrder, uint limit, uint offset) const

{

    QMessageIdList result;

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (matchFlags & QMessageDataComparator::MatchFullWord) {

        d_ptr->p_ptr->error = QMessageManager::NotYetImplemented;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

        result = d_ptr->p_ptr->session->queryMessages(&d_ptr->p_ptr->error, filter, sortOrder, limit, offset, body, matchFlags);

    }

    return result;

}

QMessageFolderIdList QMessageStore::queryFolders(const QMessageFolderFilter &filter, const QMessageFolderSortOrder &sortOrder, uint limit, uint offset) const

{

    QMessageFolderIdList result;

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    }

    d_ptr->p_ptr->error = QMessageManager::NoError;

    foreach (const MapiFolderPtr &folder, d_ptr->p_ptr->session->filterFolders(&d_ptr->p_ptr->error, filter, sortOrder, limit, offset)) {

        result.append(folder->id());

    }

    return result;

}

QMessageAccountIdList QMessageStore::queryAccounts(const QMessageAccountFilter &filter, const QMessageAccountSortOrder &sortOrder, uint limit, uint offset) const

{

    QMessageAccountIdList result;

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    }

    d_ptr->p_ptr->error = QMessageManager::NoError;

    foreach (const MapiStorePtr &store, d_ptr->p_ptr->session->filterStores(&d_ptr->p_ptr->error, filter, sortOrder, limit, offset)) {

        result.append(store->id());

    }

    return result;

}

int QMessageStore::countMessages(const QMessageFilter& filter) const

{

    return queryMessages(filter).count();

}

int QMessageStore::countFolders(const QMessageFolderFilter& filter) const

{

    return queryFolders(filter).count();

}

int QMessageStore::countAccounts(const QMessageAccountFilter& filter) const

{

    return queryAccounts(filter).count();

}

bool QMessageStore::removeMessage(const QMessageId& id, QMessageManager::RemovalOption option)

{

    // TODO: implement option

    Q_UNUSED(option)

    bool result(false);

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

        QMessageIdList ids;

        ids.append(id);

        d_ptr->p_ptr->session->removeMessages(&d_ptr->p_ptr->error, ids);

        result = (d_ptr->p_ptr->error == QMessageManager::NoError);

    }

    return result;

}

bool QMessageStore::removeMessages(const QMessageFilter& filter, QMessageManager::RemovalOption option)

{

    // TODO: implement option

    Q_UNUSED(option)

    bool result(false);

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

        QMessageIdList ids = queryMessages(filter, QMessageSortOrder(), 0, 0);

        if (d_ptr->p_ptr->error == QMessageManager::NoError) {

            d_ptr->p_ptr->session->removeMessages(&d_ptr->p_ptr->error, ids);

        }

        result = (d_ptr->p_ptr->error == QMessageManager::NoError);

    }

    return result;

}

bool QMessageStore::addMessage(QMessage *message)

{

    bool result(false);

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

    }

    if (message && !message->id().isValid()) {

        QMessageManager::Error* lError = &d_ptr->p_ptr->error;

        MapiStorePtr mapiStore = d_ptr->p_ptr->session->findStore(lError,message->parentAccountId(),false);

        if (*lError == QMessageManager::NoError && !mapiStore.isNull()) {

            //check store/message type compatibility

            if(!(mapiStore->types() & message->type()))

            {

                *lError = QMessageManager::ConstraintFailure;

                return false;

            }

            MapiFolderPtr mapiFolder;

            // Find the parent folder for this message

            QMessageFolderId folderId(message->parentFolderId());

            if (folderId.isValid()) {

#ifdef _WIN32_WCE

                mapiFolder = mapiStore->openFolder(lError,QMessageFolderIdPrivate::entryId(folderId));

#else

                mapiFolder = mapiStore->openFolderWithKey(lError, QMessageFolderIdPrivate::folderRecordKey(folderId));

#endif

            } else {

                mapiFolder = mapiStore->findFolder(lError, message->standardFolder());

            }

            if (*lError == QMessageManager::NoError && !mapiFolder.isNull()) {

                IMessage* mapiMessage = mapiFolder->createMessage(lError, *message, d_ptr->p_ptr->session);

                if (*lError == QMessageManager::NoError) {

                    //set the new QMessageId

                    //we can only be guaranteed of an entry id after IMessage->SaveChanges has been called

#ifdef _WIN32_WCE

                    SizedSPropTagArray(1, columns) = {1, {PR_ENTRYID}};

#else

                    SizedSPropTagArray(2, columns) = {2, {PR_RECORD_KEY, PR_ENTRYID}};

#endif

                    SPropValue *properties(0);

                    ULONG count;

                    HRESULT rv = mapiMessage->GetProps(reinterpret_cast<LPSPropTagArray>(&columns), 0, &count, &properties);

#ifdef _WIN32_WCE

                    if (HR_SUCCEEDED(rv) && (properties[0].ulPropTag == PR_ENTRYID)) {

#else

                    if (HR_SUCCEEDED(rv) && (properties[0].ulPropTag == PR_RECORD_KEY) && (properties[1].ulPropTag == PR_ENTRYID)) {

#endif

#ifdef _WIN32_WCE

                        MapiRecordKey recordKey;

                        MapiEntryId entryId(properties[0].Value.bin.lpb, properties[0].Value.bin.cb);

                        message->d_ptr->_id = QMessageIdPrivate::from(mapiFolder->storeEntryId(), entryId, recordKey, mapiFolder->entryId());

#else

                        MapiRecordKey recordKey(properties[0].Value.bin.lpb, properties[0].Value.bin.cb);

                        MapiEntryId entryId(properties[1].Value.bin.lpb, properties[1].Value.bin.cb);

                        message->d_ptr->_id = QMessageIdPrivate::from(mapiFolder->storeKey(), entryId, recordKey, mapiFolder->recordKey());

#endif

                        message->d_ptr->_modified = false;

                        MAPIFreeBuffer(properties);

                    } else {

                        qWarning() << "Unable to set the new ID in message.";

                        result = false;

                    }

                    mapiMessage->Release();

                    result = true;

                } else {

                    qWarning() << "Cannot createMessage";

                }

            } else {

                qWarning() << "Cannot get MAPI folder from store";

            }

        } else {

            qWarning() << "Cannot get default store";

        }

    } else {

        qWarning() << "Valid message ID at addition";

    }

    return result;

}

bool QMessageStore::updateMessage(QMessage *message)

{

    bool result(false);

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

    }

    //check store/message type compatibility

    if(MapiStorePtr mapiStore = d_ptr->p_ptr->session->findStore(&d_ptr->p_ptr->error,message->parentAccountId()))

    {

        if(!(mapiStore->types() & message->type()))

        {

            d_ptr->p_ptr->error = QMessageManager::ConstraintFailure;

            return false;

        }

    }

    else{

        qWarning() << "Unable to retrieve MAPI store for message at update";

        return false;

    }

    if (message && message->id().isValid()) {

        QMessageManager::Error* lError = &d_ptr->p_ptr->error;

        d_ptr->p_ptr->session->updateMessage(lError, *message);

        if (*lError == QMessageManager::NoError) {

            result = true;

        } else {

            qWarning() << "Cannot updateMessage";

        }

    } else {

        qWarning() << "Invalid message ID at update";

    }

    return result;

}

QMessage QMessageStore::message(const QMessageId& id) const

{

    QMessage result;

    MutexTryLocker locker(&d_ptr->p_ptr->mutex);

    if (!locker) {

        d_ptr->p_ptr->error = QMessageManager::Busy;

        return result;

    }

    if (!d_ptr->p_ptr->session) {

        d_ptr->p_ptr->error = QMessageManager::ContentInaccessible;

        return result;

    } else {

        d_ptr->p_ptr->error = QMessageManager::NoError;

    }

    return d_ptr->p_ptr->session->message(&d_ptr->p_ptr->error, id);

}