/*

* Copyright (c) 2009-10 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:

*

*/

#include "nmuiengineheaders.h"

#include "nmdatapluginfactory.h"

/*!

    \class NmDataManager

    \brief The NmDataManager class provides access to abstract list models and meta data for

    mailboxes, folders and messages. If the dataplugin can't be loaded, fatal assert is called.

*/

/*!

    Constructor

*/

NmDataManager::NmDataManager() 

:mFactory(NULL)

{

    NM_FUNCTION;

    mFactory = NmDataPluginFactory::instance();

}

/*!

    Destructor

*/

NmDataManager::~NmDataManager()

{

    NM_FUNCTION;

    NmDataPluginFactory::releaseInstance(mFactory);

}

/*!

    list mailbox ids in \a mailboxIdList array

*/

void NmDataManager::listMailboxIds(QList<NmId> &mailboxIdList)

{

    NM_FUNCTION;

    int count(mFactory->pluginInstances()->count());

    for (int i(0); i < count; i++) {

        NmDataPluginInterface *instance =

            mFactory->interfaceInstance(mFactory->pluginInstances()->at(i));

        if (instance) {

            instance->listMailboxIds(mailboxIdList);

        }

    }

}

/*!

    Creates mailbox instances and fill \a mailboxList array,

    caller is responsible deletion of objects in the array

*/

void NmDataManager::listMailboxes(QList<NmMailbox*> &mailboxList)

{

    NM_FUNCTION;

    int count = mFactory->pluginInstances()->count();

    for (int i(0); i < count; i++) {

        NmDataPluginInterface *instance =

            mFactory->interfaceInstance(mFactory->pluginInstances()->at(i));

        if (instance) {

            instance->listMailboxes(mailboxList);

        }

    }

}

/*!

    Creates folder instances from mailbox folder, Mailbox is identified with

     \a mailboxId Function fills \a folderList array,

     caller is responsible deletion of objects in the array

*/

void NmDataManager::listFolders(const NmId mailboxId, QList<NmFolder*> &folderList)

{

    NM_FUNCTION;

    NmDataPluginInterface *instance = mFactory->interfaceInstance(mailboxId);

    if (instance) {

        instance->listFolders(mailboxId, folderList);

    }

}

/*!

    Creates message instances under folder which id is \a folderId

    Function fills \a messageList array, caller is responsible deletion of

    instances in the array

*/

void NmDataManager::listMessages(

        const NmId &mailboxId,

        const NmId &folderId,

        QList<NmMessageEnvelope*> &messageEnvelopeList)

{

    NM_FUNCTION;

    NmDataPluginInterface *instance = mFactory->interfaceInstance(folderId);

    if (instance) {

        instance->listMessages(mailboxId, folderId, messageEnvelopeList);

    }

}

/*!

    Returns folder meta data from mailbox which id is \a mailboxId.

    Ownership of NmFolderMetaData is transferred. NULL pointer is

    returned if folder by id is not found

*/

NmFolderMetaData *NmDataManager::folderById(

    const NmId &mailboxId,

    const NmId &folderId)

{

    NM_FUNCTION;

    NmFolderMetaData *folderMetaData(NULL);

    QList<NmFolder*> folderList;

    listFolders(mailboxId, folderList);

    const int folderListCount(folderList.count());

    for (int i(0); i < folderListCount; i++) {

        if (folderList[i]->folderId() == folderId) {

            // Folder by id found, fill in new metadata

            folderMetaData = new NmFolderMetaData();

            folderMetaData->setId(folderList[i]->folderId());

            folderMetaData->setName(folderList[i]->name());

            break;

        }

    }

    folderList.clear();

    return folderMetaData;

}

/*!

    Returns mailbox meta data. Ownership of NmMailboxMetaData is transferred.

    NULL pointer is returned if mailbox by id is not found

*/

NmMailboxMetaData *NmDataManager::mailboxById(const NmId &mailboxId)

{

    NM_FUNCTION;

    NmMailboxMetaData *mailboxMetaData(NULL);

    NmMailbox* mbox = mailbox(mailboxId);

    if (mbox) {

        mailboxMetaData = new NmMailboxMetaData();

        mailboxMetaData->setId(mbox->id());

        mailboxMetaData->setName(mbox->name());

        // Icon id should be set also

    }

    delete mbox;

    mbox = NULL;

    return mailboxMetaData;

}

/*!

    Get new NmMessageEnvelope object by id \a messageId from any folder.

    Ownership is transferred to the caller. NULL pointer is returned if

    message id is not found.

*/

NmMessageEnvelope *NmDataManager::envelopeById(

    const NmId &mailboxId,

    const NmId &folderId,

    const NmId &messageId)

{

    NM_FUNCTION;

    NmMessageEnvelope *msgEnvelope(NULL);

    NmMessage* msg = message(mailboxId, folderId, messageId);

    if (msg) {

    	msgEnvelope = new NmMessageEnvelope(msg->envelope());

    }

    delete msg;

    msg = NULL;

    return msgEnvelope;

}

/*!

    Get new NmMailbox object by id. Ownership is transferred to the caller.

    NULL pointer is returned if message id is not found from plugin.

*/

NmMailbox *NmDataManager::mailbox(const NmId &mailboxId)

{

    NM_FUNCTION;

    NmMailbox *newMailboxObject(NULL);

    NmDataPluginInterface *instance = mFactory->interfaceInstance(mailboxId);

    int retVal(NmNotFoundError);

    if (instance) {

        retVal = instance->getMailboxById(mailboxId, newMailboxObject);

    }

    if (retVal < NmNoError) {

         delete newMailboxObject;

         newMailboxObject = NULL;

         }

    return newMailboxObject;

}

/*!

    Get new NmFolder object by id. Ownership is transferred to the caller.

    NULL pointer is returned if message id is not found from plugin.

*/

NmFolder *NmDataManager::folder(

    const NmId &mailboxId,

    const NmId &folderId)

{

    NM_FUNCTION;

    NmFolder* newFolderObject(NULL);

    QList<NmFolder*> folderList;

    listFolders(mailboxId, folderList);

    for (int i(0); i < folderList.count(); i++) {

        if (folderList[i]->folderId() == folderId) {

            newFolderObject = new NmFolder(*folderList[i]);

            break;

        }

    }

    folderList.clear();

    return newFolderObject;

}

/*!

    Get new NmMessage object by id from any folder.

    Ownership is transferred to the caller. NULL pointer is returned if

    message id is not found from plugin.

*/

NmMessage *NmDataManager::message(

    const NmId &mailboxId,

    const NmId &folderId,

    const NmId &messageId)

{

    NM_FUNCTION;

    NmMessage *newMessageObject(NULL);

    NmDataPluginInterface *instance = mFactory->interfaceInstance(mailboxId);

    int retVal(NmNotFoundError);

    if (instance) {

        retVal = instance->

            getMessageById(mailboxId, folderId, messageId, newMessageObject);

        }

    if (retVal < NmNoError) {

        // Return null object if fetching failed

        delete newMessageObject;

        newMessageObject = NULL;

    }

    return newMessageObject;

}

/*!

    Get content to message part. Parameter messagePart must

    contain messagePartId.

*/

int NmDataManager::contentToMessagePart(

    const NmId &mailboxId,

    const NmId &folderId,

    const NmId &messageId,

    NmMessagePart &messagePart)

{

    NM_FUNCTION;

    int retVal(NmNotFoundError);

    NmDataPluginInterface *instance = mFactory->interfaceInstance(mailboxId);

    if (instance) {

        retVal =

            instance->contentToMessagePart(mailboxId, folderId, messageId, messagePart);

    }

    return retVal;

}

/*!

	Function for getting standard folder id from plugin

*/

NmId NmDataManager::getStandardFolderId(

        const NmId &mailboxId,

        NmFolderType folderType )

{

    NM_FUNCTION;

    NmId folderId;

    NmDataPluginInterface *instance = mFactory->interfaceInstance(mailboxId);

    if (instance) {

        folderId =

            instance->getStandardFolderId(mailboxId, folderType);

    }

    return folderId;

}

/*!

    Returns folder type by id

    \param mailboxId The ID of the mailbox containing the folder

    \param folderId The ID of the folder 

    \return Folder type

*/

NmFolderType NmDataManager::folderTypeById(NmId mailboxId, NmId folderId)

{

    NM_FUNCTION;

    NmFolderType folderType(NmFolderOther);

    if (getStandardFolderId(mailboxId,NmFolderInbox)==folderId){

        folderType=NmFolderInbox;

    }

    else if (getStandardFolderId(mailboxId,NmFolderOutbox)==folderId){

        folderType=NmFolderOutbox; 

    }

    else if (getStandardFolderId(mailboxId,NmFolderDrafts)==folderId){

        folderType=NmFolderDrafts;

    }

    else if (getStandardFolderId(mailboxId,NmFolderSent)==folderId){

        folderType=NmFolderSent; 

    }    

    else if (getStandardFolderId(mailboxId,NmFolderDeleted)==folderId){

        folderType=NmFolderDeleted;  

    }    

    return folderType;

}