/*

* Copyright (c) 2009-2010 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:

*

*/

/*

* Symbian specific settings handling

*/

#include <QVariant>

#include <QList>

#include <QMultiMap>

#include <QMetaType>

#include <QString>

#include <QStringList>

#include <QVariant>

#ifdef Q_OS_SYMBIAN

#include <ProfileEngineSDKCRKeys.h>

#endif

#include "xqsettingsmanager.h" // Settings Manager API

#include "xqsettingskey.h"

#include "cxesettingscenrepstore.h"

#include "cxenamespace.h"

#include "cxutils.h"

#include "cxenamespace.h"

#include "cxeerror.h"

#include "cxecenrepkeys.h"

#include "OstTraceDefinitions.h"

#ifdef OST_TRACE_COMPILER_IN_USE

#include "cxesettingscenrepstoreTraces.h"

#endif

using namespace CxeSettingIds;

/*!

* CxeSettingsCenRepStore::CxeSettingsCenRepStore

*/

CxeSettingsCenRepStore::CxeSettingsCenRepStore()

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_1, "msg: e_CX_SETTINGSSTORE_CREATE 1");

    // map keys of type "string" to cenrep ids

    mapKeys();

	// we create settings handle, scope user::scope

    mSettingsManager = new XQSettingsManager(this);

    bool ok = connect(mSettingsManager, SIGNAL(valueChanged(XQSettingsKey, QVariant)),

                      this, SLOT(handleValueChanged(XQSettingsKey, QVariant)));

    CX_ASSERT_ALWAYS(ok);

    CX_DEBUG(("CxeSettingsCenRepStore - mSettingsManager ptr = %d", mSettingsManager));

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_2, "msg: e_CX_SETTINGSSTORE_CREATE 0");

	CX_DEBUG_EXIT_FUNCTION();

}

/*

* CxeSettingsCenRepStore::~CxeSettingsCenRepStore()

*/

CxeSettingsCenRepStore::~CxeSettingsCenRepStore()

{

    CX_DEBUG_ENTER_FUNCTION();

    delete mSettingsManager;

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Generates XQSettingsKey from given setting/runtime key

* \param key Name of the setting from which to generate the XQSettingsKey

* \param[out] error Error code. CxeError::None if everything went fine.

*/

XQSettingsKey

CxeSettingsCenRepStore::generateXQSettingsKey(const QString& key, CxeError::Id& error)

{

    CX_DEBUG_ENTER_FUNCTION();

    error = CxeError::None;

	long int uid = 0;

	unsigned long int keyId = 0;

	if(mKeyMapping.contains(key)) {

	    uid = mKeyMapping[key].mRepositoryUid;

		keyId = mKeyMapping[key].mKeyId;

	} else {

	    error = CxeError::NotFound;

	}

	CX_DEBUG(( "CxeSettingsCenRepStore::generateXQSettingsKey uid = %x keyId = %d", uid, keyId ));

	XQSettingsKey newKey(XQSettingsKey::TargetCentralRepository, uid, keyId);

	CX_DEBUG_EXIT_FUNCTION();

	return newKey;

}

/*!

* Reads/loads all run-time variation settings values from cenrep

* @param QList<QString> contains list of all variation key ids which we use to load values from cenrep.

* returns: QHash container, "contains" values associated with each key that are read from cenrep

* NOTE: loading variation settings should be done only ONCE at start-up.

*/

QHash<QString, QVariantList> CxeSettingsCenRepStore::loadVariationSettings(QList<QString>& variationKeys)

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_LOADRUNTIME_1, "msg: e_CX_SETTINGSSTORE_LOAD_RUNTIME 1");

    QHash<QString, QVariantList> settings;

	CxeError::Id err = CxeError::None;

	QVariantList list;

	QVariant data;

    // parsing through the list of run-time variation keys and reading values from cenrep.

    foreach (QString key, variationKeys) {

        // read the data from cenrep

        err = get(key, data);

        // clear the list

        list.clear();

        if (CxeError::None == err) {

			if (data.type() == QMetaType::QString ) {

                QString str = data.toString();

                QVariant strListVariant = qVariantFromValue(str.split(","));

                //generate qvariantlist from strListVariant

                list = strListVariant.toList();

            } else {

                // if its of any other type, then just append to the list

                list.append(data);

            }

        }

        // append the values associated with the key to the list.

        settings.insert(key, list);

    } // end for

    CX_DEBUG_EXIT_FUNCTION();

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_LOADRUNTIME_2, "msg: e_CX_SETTINGSSTORE_LOAD_RUNTIME 0");

    return settings;

}

/*!

* Reads a value from cenrep

* @param key   - setting key

* @param value - setting value read from cenrep

*/

CxeError::Id CxeSettingsCenRepStore::get(const QString& key, QVariant &value)

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mSettingsManager);

    CX_DEBUG(("CxeSettingsCenRepStore::get - key: %s", key.toAscii().constData()));

    CxeError::Id err = CxeError::None;

	XQSettingsKey mappedSettingKey = generateXQSettingsKey(key, err);

    if (CxeError::None == err) {

        CX_DEBUG(("reading values from XQSettingsManager.."));

        value = mSettingsManager->readItemValue(mappedSettingKey, mKeyMapping[key].mDataType);

        // checking if reading data from cenrep was successful

        if (mSettingsManager->error() != XQSettingsManager::NoError) {

            CX_DEBUG(("Error reading value from XQSettingsManager.."));

            err = CxeError::General;

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

    return err;

}

/*!

* Reads a value from cenrep and starts the value change monitoring.

* @param key   - setting key

* @param uid   - setting UID of the component that owns the setting key

* @param type  - the type of key cr key or P&S key

* @param value - setting value read from cenrep

*

* @sa handleValueChanged()

*/

void CxeSettingsCenRepStore::startMonitoring(long int uid,

                                 unsigned long int key,

                                 Cxe::SettingKeyType type,

                                 QVariant &value)

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mSettingsManager);

    XQSettingsKey::Target keyType;

    if (type == Cxe::PublishAndSubscribe) {

        keyType = XQSettingsKey::TargetPublishAndSubscribe;

    } else {

        keyType = XQSettingsKey::TargetCentralRepository;

    }

	XQSettingsKey settingsKey(keyType, uid, key);

    CX_DEBUG(("reading value from XQSettingsManager.."));

    value = mSettingsManager->readItemValue(settingsKey);

    // start monitoring changes for the key

    // both P&S and Repository keys are monitored

    bool ok = mSettingsManager->startMonitoring(settingsKey);

    if (!ok) {

        XQSettingsManager::Error error = mSettingsManager->error();

        CX_DEBUG(("CxeSettingsCenRepStore - got error %d trying to start listening", error));

        // If we try to start listening one key more than once,

        // we get this error. We can safely ignore it.

        ok = (XQSettingsManager::AlreadyExistsError == error);

    }

    CX_ASSERT_ALWAYS(ok);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Sets a new value to cenrep

* @param key   - setting key

* @param newValue - new value set to the key in cenrep

*/

CxeError::Id CxeSettingsCenRepStore::set(const QString& key, const QVariant newValue)

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mSettingsManager);

	CxeError::Id err = CxeError::None;

    // generating key for xqsettingsmanager

    XQSettingsKey mappedSettingKey = generateXQSettingsKey(key, err);

    if (CxeError::None == err) {

        // key found

        // check if the key can be set any value or read-only

        if(mKeyMapping[key].mReadOnly) {

           err = CxeError::NotFound;

        } else {

            mSettingsManager->writeItemValue(mappedSettingKey, newValue);

            // check from xqsettingsmanager if "Set" operation was successful

            if (mSettingsManager->error() != XQSettingsManager::NoError) {

                CX_DEBUG(("Error writing value to XQSettingsManager.."));

                err = CxeError::General;

            }

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

    return err;

}

/*!

* resets the cenrep store

*/

void CxeSettingsCenRepStore::reset()

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_ASSERT(mSettingsManager);

    //!@Todo: How to reset the repository.

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Maps CxeSettingIds to cenrep key ids that XQSettingsManager understands

*/

void CxeSettingsCenRepStore::mapKeys()

{

    CX_DEBUG_ENTER_FUNCTION();

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_MAPKEYS_1, "msg: e_CX_SETTINGSSTORE_INIT_MAPPING 1");

    mKeyMapping.clear();

    // mapping setting keys

    addKeyMapping(CxeSettingIds::FNAME_FOLDER_SUFFIX,

                  FileNameSuffixCr,

                  XQSettingsManager::TypeString);

    addKeyMapping(CxeSettingIds::FNAME_MONTH_FOLDER,

                  FolderNameCr,

                  XQSettingsManager::TypeString);

    addKeyMapping(CxeSettingIds::FNAME_IMAGE_COUNTER,

                  FileNameImageCounterCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::FNAME_VIDEO_COUNTER,

                  FileNameVideoCounterCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::STILL_SHOWCAPTURED,

                  StillShowCapturedCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::VIDEO_SHOWCAPTURED,

                  VideoShowCapturedCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::IMAGE_QUALITY,

                  ImageQualityCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::VIDEO_QUALITY,

                  VideoQualityCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::VIDEO_MUTE_SETTING,

                  AudioMuteCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::GEOTAGGING,

                  GeoTaggingCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::FACE_TRACKING,

                  FacetrackingCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::IMAGE_SCENE,

                  SceneModeStillCr,

                  XQSettingsManager::TypeString);

    addKeyMapping(CxeSettingIds::VIDEO_SCENE,

                  SceneModeVideoCr,

                  XQSettingsManager::TypeString);

    addKeyMapping(CxeSettingIds::FLASH_MODE,

                  FlashModeStillCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::CAPTURE_SOUND_ALWAYS_ON,

                  CaptureSoundAlwaysOnCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::CAMERA_MODE,

                  CameraModeCr,

                  XQSettingsManager::TypeInt);

    addKeyMapping(CxeSettingIds::GEOTAGGING_DISCLAIMER,

                  GeoTaggingDisclaimerCr,

                  XQSettingsManager::TypeInt);

    // mapping run-time variation keys

    addKeyMapping(CxeVariationKeys::FREE_MEMORY_LEVELS,

                  FreeMemoryLevelsCr,

                  XQSettingsManager::TypeString,

                  true);

    addKeyMapping(CxeVariationKeys::STILL_MAX_ZOOM_LIMITS,

                  StillMaxZoomLimitsCr,

                  XQSettingsManager::TypeString,

                  true);

    addKeyMapping(CxeVariationKeys::VIDEO_MAX_ZOOM_LIMITS,

                  VideoMaxZoomLimitsCr,

                  XQSettingsManager::TypeString,

                  true);

    OstTrace0(camerax_performance, CXESETTINGSCENREPSTORE_MAPKEYS_2, "msg: e_CX_SETTINGSSTORE_INIT_MAPPING 0");

	CX_DEBUG_EXIT_FUNCTION();

}

/*!

* helper method to construct key mappings for each setting key

*/

void CxeSettingsCenRepStore::addKeyMapping(QString key,

                                           unsigned long int keyid,

                                           XQSettingsManager::Type type,

                                           bool readOnly)

{

    CX_DEBUG_ENTER_FUNCTION();

    CxeCenRepDefinition cenrepDef;

    long int uid;

    if (readOnly) {

        uid = CxRuntimeFeaturesCrUid;

    } else {

        uid = CxSettingsCrUid;

    }

    cenrepDef.mRepositoryUid = uid;

    cenrepDef.mKeyId         = keyid;

    cenrepDef.mReadOnly      = readOnly;

    cenrepDef.mDataType      = type;

    // insert the key specific mapping to the hash

    mKeyMapping.insert(key, cenrepDef);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

*  Handles value changed signal from the XQSettingsManager.

*  Emits signals corresponding the changed setting.

*  \sa warningTonesChanged(), settingValueChanged()

*/

void CxeSettingsCenRepStore::handleValueChanged(XQSettingsKey key, QVariant value)

{

    CX_DEBUG_ENTER_FUNCTION();

    emit settingValueChanged(key.uid(), key.key(), value);

    CX_DEBUG_EXIT_FUNCTION();

}

const QHash<QString, CxeSettingsCenRepStore::CxeCenRepDefinition>& CxeSettingsCenRepStore::keyMapping() const

{

    return mKeyMapping;

}

CxeSettingsLocalStore::CxeSettingsLocalStore()

{

    CX_DEBUG_ENTER_FUNCTION();

    // load values from cenrep

    CX_DEBUG(("Loading keys from cenrep..."));

    foreach(QString key, keyMapping().keys()) {

        QVariant value;

        CxeError::Id err = CxeSettingsCenRepStore::get(key, value);

        if (!err) {

            CX_DEBUG(("Adding key %s", key.toAscii().constData()));

            mSettings[key] = value;

        } else {

            CX_DEBUG(("Key %s not found in cenrep", key.toAscii().constData()));

        }

    }

    CX_DEBUG(("Done"));

    CX_DEBUG_EXIT_FUNCTION();

}

CxeSettingsLocalStore::~CxeSettingsLocalStore()

{

    CX_DEBUG_ENTER_FUNCTION();

    CX_DEBUG_EXIT_FUNCTION();

}

CxeError::Id CxeSettingsLocalStore::get(const QString& key, QVariant &value)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (useValueFromCenrep(key)) {

        CX_DEBUG(("Reading key %s directly from cenrep", key.toAscii().constData()));

        return CxeSettingsCenRepStore::get(key, value);

    }

    value = mSettings.value(key);

    if (value.isNull()) {

        CX_DEBUG(("Key %s not found", key.toAscii().constData()));

        return CxeError::NotFound;

    }

    CX_DEBUG(("Key %s, value %s", key.toAscii().constData(), value.toString().toAscii().constData()));

    CX_DEBUG_EXIT_FUNCTION();

    return CxeError::None;

}

CxeError::Id CxeSettingsLocalStore::set(const QString& key, const QVariant newValue)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (useValueFromCenrep(key)) {

        CX_DEBUG(("Writing key %s directly to cenrep", key.toAscii().constData()));

        return CxeSettingsCenRepStore::set(key, newValue);

    }

    if (mSettings.value(key).isNull()) {

        // only allow to set keys that are mapped in CxeSettingsCenRepStore

        CX_DEBUG(("Key %s not found", key.toAscii().constData()));

        return CxeError::NotFound;

    }

    mSettings[key] = newValue;

    CX_DEBUG_EXIT_FUNCTION();

    return CxeError::None;

}

/*!

 * Returns true for keys that should be read/written from cenrep instead

 * of using cached copies. This is for some settings that need to be shared

 * between all instances of camera.

 *

 * @param key name

 * @return boolean to indicate wheter to load use cenrep value or not

 */

bool CxeSettingsLocalStore::useValueFromCenrep(const QString &key) const