/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: NMail Application Launcher interface used for interfacing between

*              QT highway and other applications

*

*/

//  INCLUDES

#include "nmuiheaders.h"

/*!

    \class NmStartParamDataHelper

    \brief A helper class for processing the data given to the actual service.

*/

class NmStartParamDataHelper

{

public:

    /*!

        Class constructor.

    */

    inline NmStartParamDataHelper()

    : mSubject(0),

      mToAddresses(0),

      mCcAddresses(0),

      mBccAddresses(0),

      mAttachmentList(0),

      mEditorStartMode(NmUiEditorCreateNew)

    {

        NM_FUNCTION;

    }

    /*!

        Class destructor.

    */

    inline ~NmStartParamDataHelper()

    {

        NM_FUNCTION;

    }

    /*!

        Extracts the data from the given QVariant into the class members.

        \param data QVariant containing the data.

        \return True if success, false otherwise.

    */

    inline bool extractData(const QVariant &data)

    {

        NM_FUNCTION;

        bool success(false);

        if (data.canConvert(QVariant::Map)) {

            // The given data may contain a mail subject and recipient lists.

            QMap<QString, QVariant> map = data.toMap();

            success = processMap(map);

        }

        else if (data.canConvert(QVariant::StringList)) {

            QStringList attachmentList = data.toStringList();

            mAttachmentList = new QStringList(attachmentList);

            success = true;

        }

        else {

            // Data type not supported!

            NM_ERROR(1,"NmStartParamDataHelper::extractData(): data type not supported");

        }

        // Determine the editor start mode.

        if (mToAddresses || mCcAddresses || mBccAddresses) {

            mEditorStartMode = NmUiEditorMailto;

        }

        else if (mAttachmentList) {

            mEditorStartMode = NmUiEditorCreateNew;

        }

        return success;

    }

    /*!

        Deletes the class members. Must be used if NmUiStartParam does not

        take ownership of the members.

    */

    inline void deleteData()

    {

        NM_FUNCTION;

        delete mSubject;

        mSubject = 0;

        if (mToAddresses) {

            qDeleteAll(*mToAddresses);

            delete mToAddresses;

            mToAddresses = 0;

        }

        if (mCcAddresses) {

            qDeleteAll(*mCcAddresses);

            delete mCcAddresses;

            mCcAddresses = 0;

        }

        if (mBccAddresses) {

            qDeleteAll(*mBccAddresses);

            delete mBccAddresses;

            mBccAddresses = 0;

        }

        delete mAttachmentList;

        mAttachmentList = 0;

    }

private:

    /*!

        Extracts the data from the given map into the class members.

        \param map The map to extract the data from.

        \return True if success, false otherwise.

    */

    inline bool processMap(const QMap<QString, QVariant> &map)

    {

        NM_FUNCTION;

        QMap<QString, QVariant>::const_iterator i = map.constBegin();

        QString key;

        QVariant value;

        while (i != map.constEnd()) {

            key = i.key();

            value = i.value();

            if (!key.compare(emailSendSubjectKey, Qt::CaseInsensitive) &&

                value.type() == QVariant::String) {

                // Extract the mail subject.

                if (mSubject) {

                    // A subject string has already been extracted! Discard the

                    // old subject.

                    delete mSubject;

                }

                mSubject = new QString(value.toString());

            }

            else if (!key.compare(emailSendToKey, Qt::CaseInsensitive)) {

                // Extract the "to" recipients.

                addAddressesToList(value, &mToAddresses);

            }

            else if (!key.compare(emailSendCcKey, Qt::CaseInsensitive)) {

                // Extract the "cc" recipients.

                addAddressesToList(value, &mCcAddresses);

            }

            else if (!key.compare(emailSendBccKey, Qt::CaseInsensitive)) {

                // Extract the "bcc" recipients.

                addAddressesToList(value, &mBccAddresses);

            }

            ++i;

        }

        // In principle it is ok even if the map does not contain any data e.g.

        // in a case where the editor view needs to be opened without any

        // predefined data. Therefore, we always return true.

        return true;

    }

    /*!

        Appends the given addresses into the given list.

        \param address The addresses to append.

        \param list The list where the addresses are appended to.

    */

    inline void addAddressesToList(const QVariant &addresses,

                                   QList<NmAddress*> **list)

    {

        NM_FUNCTION;

        if (!list) {

            // Invalid argument!

            return;

        }

        QVariant::Type dataType = addresses.type();

        QList<NmAddress*> foundAddresses;

        switch (dataType) {

            case QVariant::String: {

                // A single address.

                NmAddress *address = new NmAddress(addresses.toString());

                foundAddresses.append(address);

                break;

            }

            case QVariant::StringList: {

                // A list of addresses.

                QStringList addressList = addresses.toStringList();

                foreach (QString addressAsString, addressList) {

                    NmAddress *address = new NmAddress(addressAsString);

                    foundAddresses.append(address);

                }

                break;

            }

            default: {

                break;

            }

        }

        if (foundAddresses.count()) {

            // Append the found addresses into the given list.

            if (!(*list)) {

                *list = new QList<NmAddress*>();

            }

            (*list)->append(foundAddresses);

        }

    }

public: // Data

    QString *mSubject; // Not owned.

    QList<NmAddress*> *mToAddresses; // Not owned.

    QList<NmAddress*> *mCcAddresses; // Not owned.

    QList<NmAddress*> *mBccAddresses; // Not owned.

    QStringList *mAttachmentList; // Not owned.

    NmUiEditorStartMode mEditorStartMode;

};

/*!

    \class NmSendServiceInterface

    \brief NMail application service interface which provides an email sending

           interface for other application using the Qt Highway.

*/

/*!

    Class constructor.

*/

NmSendServiceInterface::NmSendServiceInterface(QString interfaceName,

                                               QObject *parent,

                                               NmUiEngine &uiEngine,

                                               NmApplication *application)

    : XQServiceProvider(interfaceName, parent),

      mApplication(application),

      mUiEngine(uiEngine),

      mAsyncReqId(0),

      mStartParam(NULL),

      mSelectionDialog(NULL),

      mCurrentView(NULL)

{

    publishAll();

}

/*!

    Class desctructor.

*/

NmSendServiceInterface::~NmSendServiceInterface()

{

    NM_FUNCTION;

    delete mStartParam;

    delete mSelectionDialog;

}

/*!

    Queries the user for a mailbox to use.

    \param mailboxId Where the ID of the selected mailbox is set.

    \return True if a mailbox was selected, false otherwise.

*/

void NmSendServiceInterface::selectionDialogClosed(NmId &mailboxId)

{

    NM_FUNCTION;

    if (mailboxId.id()) { // mailbox selected

        launchEditorView(mailboxId);

    }

    else {

        cancelService();

    }

}

/*!

    Used for sending email messages from external applications. Used by the

    Share UI. In addition, the interface can be used to send email to a contact

    from another application. The method sets the given data (e.g. recipients,

    attachments) to a mail composer (editor) view and displays it.

    \param data If used by Share UI, will contain the list of filenames to

                attach. Can also contain a map with key value pairs containing

                subject and recipient data.

*/

void NmSendServiceInterface::send(QVariant data)

{

    NM_FUNCTION;

    HbMainWindow *mainWindow(NULL);

    // Make sure that qmail stays background if user presses back in editorview

    if (mApplication) {

        mApplication->updateVisibilityState();

        mainWindow = mApplication->mainWindow();

        mCurrentView = mainWindow->currentView();

        // Hide the current view.

        if (mCurrentView) {

            mCurrentView->hide();

        }    

    }

    // Check the given data.

    NmStartParamDataHelper dataHelper;

    bool validData = dataHelper.extractData(data);

    NmMailboxListModel &mailboxListModel = mUiEngine.mailboxListModel();

    const int count = mailboxListModel.rowCount();

    NmId mailboxId(0);

    mAsyncReqId = setCurrentRequestAsync();

    if (!validData) {

        // Failed to extract the data!

        NM_ERROR(1,"NmSendServiceInterface::send(): failed to process the given data");

        cancelService();

    }

    else if (count == 0) {

        HbDeviceMessageBox note(hbTrId("txt_mail_dialog_no_mailboxes_defined"),

                          HbMessageBox::MessageTypeInformation);

        note.setTimeout(HbMessageBox::NoTimeout);

        note.show();

        cancelService();

    }

    else { // count > 0

        if (mainWindow) {

            mainWindow->show();        

        }

    	mStartParam = new NmUiStartParam(

        	NmUiViewMessageEditor,

	        0, // account id

	        0, // folder id

    	    0, // message id

        	dataHelper.mEditorStartMode, // editor start mode

	        dataHelper.mToAddresses, // address list

    	    dataHelper.mAttachmentList, // attachment list

        	true, // start as service

	        dataHelper.mSubject, // message subject

	        dataHelper.mCcAddresses, // list containing cc recipient addresses

    	    dataHelper.mBccAddresses // list containing bcc recipient addresses

	    );

        if (count == 1) {

            // A single mailbox exists.

            QModelIndex modelIndex = mailboxListModel.index(0, 0);

            QVariant mailbox(mailboxListModel.data(modelIndex));

            NmMailboxMetaData *mailboxMetaData = mailbox.value<NmMailboxMetaData*>();

            mailboxId = mailboxMetaData->id();

        	launchEditorView(mailboxId);

        }

        else { // count > 1

            if (!mSelectionDialog) {

                mSelectionDialog =

                    new NmMailboxSelectionDialog(mUiEngine.mailboxListModel());

            }

            if (!XQServiceUtil::isEmbedded()) {

                XQServiceUtil::toBackground(false);

            }

            connect(mSelectionDialog, SIGNAL(selectionDialogClosed(NmId&)),

                    this, SLOT(selectionDialogClosed(NmId&)));

            mSelectionDialog->open();

            // launch the editor when the dialog is closed

        }

    }

}

/*!

    Called when mailbox id is know and editor can be opened

    \param mailboxId mailbox using in editor

 */

void NmSendServiceInterface::launchEditorView(NmId mailboxId)

{

    NM_FUNCTION;

    NM_COMMENT(QString("NmSendServiceInterface::launchEditorView(): mailboxId=%1").arg(mailboxId.id()));

    // Make the previous view visible again.

    if (mCurrentView) {

        mCurrentView->show();

        mCurrentView = NULL;

    }

    if (mStartParam) {

        // Make sure the NMail application is in the foreground

        if (!XQServiceUtil::isEmbedded()) {

            XQServiceUtil::toBackground(false);    

        }

        mStartParam->setMailboxId(mailboxId);

        mApplication->enterNmUiView(mStartParam);

        mStartParam = NULL; // ownership passed

    }

    completeRequest(mAsyncReqId, 1);

    mAsyncReqId = 0;

}

void NmSendServiceInterface::cancelService()

{

    NM_FUNCTION;

    delete mStartParam;

    mStartParam = NULL;

    // If the service was started as embedded, do not hide the app.

    if (!XQServiceUtil::isEmbedded()) {

        XQServiceUtil::toBackground(true);

    }

    completeRequest(mAsyncReqId, 0);

    mAsyncReqId = 0;

    // If started as service, the application must be closed now.

    if (XQServiceUtil::isService()) {

        connect(this, SIGNAL(returnValueDelivered()),

            mApplication, SLOT(delayedExitApplication()));

    }

    else {

        // Make the previous view visible again

        if (mCurrentView) {

            mCurrentView->show();

            mCurrentView = NULL;

        }

    }

}

// End of file.