/*

 * Copyright (c) 2009 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: General utilities for unified editor and plugin

 *

 */

// INCLUDE FILES

#include <centralrepository.h>          // CRepository

#include <CoreApplicationUIsSDKCRKeys.h>  // offline CR keys

#include <rcustomerserviceprofilecache.h>

#include <MmsEngineDomainCRKeys.h>

#include <MsgMediaResolver.h>

#include <DRMHelper.h>

#include "MessagingVariant.hrh"

#include "MessagingInternalCRKeys.h"  // Keys

#include "UniEditorGenUtils.h"

// CONSTANTS

const TInt KMuiuCharQuote = '\"';

const TInt KMuiuCharBackSlash = '\\';

const TInt KMuiuCharDot = '.';

const TInt KMuiuCharSpace = ' ';

const TInt KMuiuCharDel = 127;

const TInt KMuiuCharAt = '@';

const TInt KMuiuSpecialCharStrLen = 12;

_LIT( KRFC822Specials,"()<>@,;:\\\"[]");

// ============================ MEMBER FUNCTIONS ===============================

// ----------------------------------------------------

// UniEditorGenUtils::UniEditorGenUtils

// @see header

// ----------------------------------------------------

UniEditorGenUtils::UniEditorGenUtils() :

mAbsMaxConcatenatedSms(-1),

mAbsMaxSmsCharacters(-1),

mMaxMmsSize(-1)

{

}

// ----------------------------------------------------

// UniEditorGenUtils::~UniEditorGenUtils

// @see header

// ----------------------------------------------------

UniEditorGenUtils::~UniEditorGenUtils()

{

}

// ----------------------------------------------------

// UniEditorGenUtils::ReadEmailOverSmsSettingsL

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::ReadEmailOverSmsSettingsL(

    TDes& aSmsc,

    TDes& aDestinationAddress,

    TBool& aModifiable )

    {

    // Create storage

    CRepository* storage = CRepository::NewLC( KCRUidSmum );

    storage->Get( KSumEmailSC, aSmsc );

    storage->Get( KSumEmailGateway, aDestinationAddress );

    storage->Get( KSumEmailModifiable, aModifiable );

    CleanupStack::PopAndDestroy(); // storage

    return KErrNone;

    }

// ----------------------------------------------------

// UniEditorGenUtils::WriteEmailOverSmsSettingsL

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::WriteEmailOverSmsSettingsL(

    const TDes& aSmsc,

    const TDes& aDestinationAddress,

    const TBool& aModifiable )

    {

    // Create storage

    CRepository* storage = CRepository::NewLC( KCRUidSmum );

    storage->Set( KSumEmailSC, aSmsc );

    storage->Set( KSumEmailGateway, aDestinationAddress );

    storage->Set( KSumEmailModifiable, aModifiable );

    CleanupStack::PopAndDestroy(); // storage

    return KErrNone;

    }

// ---------------------------------------------------------

// UniEditorGenUtils::IsPhoneOfflineL

// @see header

// ---------------------------------------------------------

TBool UniEditorGenUtils::IsPhoneOfflineL()

    {

    TInt connAllowed ( 1 );

    CRepository* repository ( CRepository::NewL( KCRUidCoreApplicationUIs ) );

    TInt err = repository->Get( KCoreAppUIsNetworkConnectionAllowed, connAllowed );

    delete repository;

    repository = NULL;

    if ( !err && !connAllowed )

        {

        return ETrue;

        }

    else

        {

        return EFalse;

        }

    }

// ----------------------------------------------------

// UniEditorGenUtils::AcceptEmailAddressesL

// @see header

// ----------------------------------------------------

TBool UniEditorGenUtils::AcceptEmailAddressesL()

{

	CRepository* repository ( CRepository::NewL( KCRUidMuiuVariation ) );

	TInt features = 0;

    TBool emailOverSmsVariationOn = false;

    TBool acceptEmailAddresses = false;

	 if ( repository->Get( KMuiuSmsFeatures, features ) == KErrNone )

	         {

	         if ( features & KSmsFeatureIdEmailOverSms )

	             {

	             emailOverSmsVariationOn = ETrue;

	             }

	         }

	 delete repository;

	 //TODO chk with Jerry if below is needed

	 RCustomerServiceProfileCache* cspProfile = new (ELeave) RCustomerServiceProfileCache;

     TInt error = cspProfile->Open();

     if ( error == KErrNone )

         {

         if ( emailOverSmsVariationOn )

             {

             // EmailOverSms bit was variated ON so let's check the bit from SIM

             // Get tele services flags from CSP

             RMobilePhone::TCspValueAdded params;

             // Read the CPHS bit so we know if EmailOverSms is supported

             error = cspProfile->CspCPHSValueAddedServices( params );

             if ( error == KErrNone &&

                  params >= 0 &&

                  params & RMobilePhone::KCspSMMOEmail )

                 {

                 // It's supported

            	 acceptEmailAddresses= true;

                 }

             }

         }

     cspProfile->Close();

     delete cspProfile;

     return acceptEmailAddresses;

}

// ----------------------------------------------------

// UniEditorGenUtils::VerifyEmailAddressesL

// @see header

// ----------------------------------------------------

TBool UniEditorGenUtils::VerifyEmailAddressesL( ConvergedMessageAddressList addrList)

{

    TBool emailAddrPresent =  EFalse;

    int addrCount = addrList.count();

    for(int i=0; i< addrCount; i++)

    {

        QString addr = addrList.at(i)->address();

        // check if email address, contains at least 3 characters

        if(addr.size() >= 3)

        {

            // search for @ from the address

            // however, it can't be the first or the last item

            for(int i = 1; i < addr.size() - 1; i++)

            {

                if(addr.at(i) == '@')

                {

                    emailAddrPresent = ETrue;

                    break;

                }

            }

        }

    }

    return emailAddrPresent;

}

// ----------------------------------------------------

// UniEditorGenUtils::UTF8Size

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::UTF8Size( QString aText )

    {

    TPtrC ptr = text->Des();

    TInt count = 0;

    TInt sizeInBytes = 0;

    TUint16 charValue;

    while ( count < ptr.Length() )

        {

        charValue = ptr[count];

        if ( charValue < 0x80 )

            {

            sizeInBytes += 1;

            }

        else if ( charValue < 0x800 )

            {

            sizeInBytes += 2;

            }

        else //if ( charValue < 0x10000 )

            {

            sizeInBytes += 3;

            }

        count++;

        }

    return sizeInBytes;

    }

// ----------------------------------------------------

// UniEditorGenUtils::MaxSmsRecipientsL

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::MaxSmsRecipientsL()

{

	CRepository* repository ( CRepository::NewL( KCRUidUniEditor ) );

	TInt maxSmsRecipients = KDefaultSmsRecipients;

    if ( (repository->Get( KUniEditorSoftLimitRecipientCount, maxSmsRecipients ) 

    		!= KErrNone) ||	(maxSmsRecipients <= 0) )

        {

        // Unreasonable count, change it back to default value

    	maxSmsRecipients = KDefaultSmsRecipients;

        }

    delete repository;

    return maxSmsRecipients;

}

// ----------------------------------------------------

// UniEditorGenUtils::MaxMmsRecipientsL

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::MaxMmsRecipientsL()

{

	CRepository* repository ( CRepository::NewL( KCRUidUniEditor ) );

	TInt maxMmsRecipients = KDefaultMmsRecipients;

    if ( (repository->Get( KUniEditorMaxRecipientCount, maxMmsRecipients )

    		!= KErrNone) || (maxMmsRecipients <= 0))

        {

        // Unreasonable count, change it back to default value

    	maxMmsRecipients = KDefaultMmsRecipients;

        }

    delete repository;

    return maxMmsRecipients;

}

// ----------------------------------------------------

// UniEditorGenUtils::MaxMmsMsgSizeL

// @see header

// ----------------------------------------------------

TInt UniEditorGenUtils::MaxMmsMsgSizeL()

{

    // optimized, to read only once from CR

    if(mMaxMmsSize == -1)

    {// not read yet, so read it now

        mMaxMmsSize = KDefaultMaxSize;

        CRepository* repository = CRepository::NewL( KCRUidMmsEngine );

        CleanupStack::PushL( repository );

        repository->Get( KMmsEngineMaximumSendSize, mMaxMmsSize );

        CleanupStack::PopAndDestroy( repository );

    }

    return mMaxMmsSize;

}

// ----------------------------------------------------

// UniEditorGenUtils::getFileInfoL

// @see header

// ----------------------------------------------------

void UniEditorGenUtils::getFileInfoL(QString filePath,

                                    int& size,

                                    QString& mimetype,

                                    TMsgMediaType& mediaType)

{

    int fileSize = 0;

	CMsgMediaResolver* mediaResolver;

    if(filepath)  

    { 

    CleanupStack::PushL(filepath);     

    mediaResolver = CMsgMediaResolver::NewLC();

    RFile file = mediaResolver->FileHandleL(*filepath);    

    file.Size(fileSize);        

    fileSize+= KEstimatedMimeHeaderSize;

    size = fileSize;

    TDataType datatype;

    mediaResolver->RecognizeL( file, datatype );

    mediaType = mediaResolver->MediaType(datatype.Des8());

    CleanupStack::PopAndDestroy(mediaResolver);

    CleanupStack::PopAndDestroy(filepath);

    }

    return;

}

// ----------------------------------------------------

// UniEditorGenUtils::MaxSmsMsgSizeL

// @see header

// ----------------------------------------------------

int UniEditorGenUtils::MaxSmsMsgSizeL(bool unicode)

{

    int maxLength = 0;

    int lengthOne = 0;

    int lengthMany = 0;

    getSmsCharacterLimits(lengthOne, lengthMany, unicode);

    maxLength = lengthOne;

    int maxSmsParts = absoluteMaxSmsPartsL();    

    if(maxSmsParts > 1)

        {

        maxLength = maxSmsParts * lengthMany;

        }

/* UniEditor soft limit, may not be needed    

    int maxSmsCharacters = absoluteMaxSmsCharactersL();

    if(maxSmsCharacters > 0)

        {

        maxLength = maxSmsCharacters;

        }

*/

    return maxLength;

}

// ----------------------------------------------------

// UniEditorGenUtils::getSmsCharacterLimits

// @see header

// ----------------------------------------------------

void UniEditorGenUtils::getSmsCharacterLimits(int& singlePartLength,

                                        int& concatenatedPartLength,

                                        bool unicode)

    {

    if(unicode)

        {

        singlePartLength = KFirstUnicodeSmsLength;

        concatenatedPartLength = KUnicodeConcatenationInterval;

        }

    else

        {

        singlePartLength = KFirstNormalSmsLength;

        concatenatedPartLength = KNormalConcatenationInterval;

        }

    }

// ----------------------------------------------------

// UniEditorGenUtils::absoluteMaxSmsPartsL

// @see header

// ----------------------------------------------------

int UniEditorGenUtils::absoluteMaxSmsPartsL()

{

    // optimized, to read only once from CR

    if(mAbsMaxConcatenatedSms == -1)

    { // not read yet, so read it now

        mAbsMaxConcatenatedSms = KDefaultMaxSmsSize;

        CRepository* repository = CRepository::NewL( KCRUidSmum );

        CleanupStack::PushL( repository );

        if ( repository->Get( KSmumMaxSubMsgCount, mAbsMaxConcatenatedSms ) ||

                mAbsMaxConcatenatedSms < 1 || 

                mAbsMaxConcatenatedSms > KMaxSmsSizeByStandard )

        {

            // Unreasonable count, change it back to 30 ( S60 default )

            mAbsMaxConcatenatedSms = KMaxSmsSizeByStandard;

        }

        CleanupStack::PopAndDestroy( repository );

    }

    return mAbsMaxConcatenatedSms;

}

// ----------------------------------------------------

// UniEditorGenUtils::absoluteMaxSmsCharactersL

// @see header

// ----------------------------------------------------

int UniEditorGenUtils::absoluteMaxSmsCharactersL()

{

    // optimized, to read only once from CR

    if(mAbsMaxSmsCharacters == -1)

    {// not read yet, so read it now

        CRepository* repository = CRepository::NewL( KCRUidUniEditor );

        CleanupStack::PushL( repository );

        repository->Get( KUniEditorMaxSmsCharacterCount, mAbsMaxSmsCharacters );

        CleanupStack::PopAndDestroy( repository );    

    }

    return mAbsMaxSmsCharacters;

}

// ---------------------------------------------------------

// UniEditorGenUtils::ConvertDigitsTo

// @see header

// ---------------------------------------------------------

void UniEditorGenUtils::ConvertDigitsTo( TDes& aDes, TDigitType aDigitType )

    {

    TChar toArea = aDigitType;

    TInt length = aDes.Length();

    for(int i=0; i<length; i++)

        {

        TChar ch = aDes[i];

        TChar base = NumberToBase(ch);

        switch (base)

            {

            case EDigitTypeWestern:

            case EDigitTypeArabicIndic:

            case EDigitTypeEasternArabicIndic:

            case EDigitTypeDevanagari:

            case EDigitTypeThai:

                ch += toArea - base;

                aDes[i] = TUint16(ch);

                break;

            default:

                break;

            };

        }

    }

// ---------------------------------------------------------

// UniEditorGenUtils::NumberToBase

// @see header

// ---------------------------------------------------------

TChar UniEditorGenUtils::NumberToBase(TChar ch)

    {

    TDigitType d[] = { EDigitTypeWestern, EDigitTypeArabicIndic, EDigitTypeEasternArabicIndic, EDigitTypeDevanagari, EDigitTypeThai };

    TInt i = 0;

    TInt num = sizeof(d)/sizeof(d[0]);

    while(i<num)

        {

        if (ch>TChar(d[i]) && ch<TChar(d[i]+10)) { return d[i]; }

        i++;

        }

    return ch;

    }

// ---------------------------------------------------------

// UniEditorGenUtils::ReplaceCharacters

// @see header

// ---------------------------------------------------------

void UniEditorGenUtils::ReplaceCharacters(TDes &aDes, const TDesC &aChars, TChar aReplacement)

    {

    TInt src = 0;

    TInt srclength = aDes.Length();

    while(src < srclength)

        {

    TChar c = aDes[src];

    if (aChars.LocateF(c) != KErrNotFound)

        aDes[src] = TUint16(aReplacement);

    ++src;

        }

    }

// ----------------------------------------------------

// UniEditorGenUtils::IsValidEmailAddressL

// @see header

// ----------------------------------------------------

TBool UniEditorGenUtils::IsValidEmailAddress( const TDesC& aAddress )

    {

    TInt c;

    TInt length = aAddress.Length ();

    TBufC<KMuiuSpecialCharStrLen> rfc822Specials ( KRFC822Specials );

    // first we validate the name portion (name@domain)

    if ( length && aAddress[0] == KMuiuCharDot )

        {

        return EFalse;

        }

    for ( c = 0 ; c < length ; c++ )

        {

        if ( aAddress[c] == KMuiuCharQuote && ( c == 0 || 

        aAddress[c-1] == KMuiuCharDot || aAddress[c-1] == KMuiuCharQuote ) )

            {

            while ( ++c < length )

                {

                if ( aAddress[c] == KMuiuCharQuote )

                    {

                    if( (c + 1) == length)

                        {

                        return EFalse;

                        }

                    break;

                    }

                if ( aAddress[c] == KMuiuCharBackSlash && 

                    ( aAddress[++c] == KMuiuCharSpace) ) 

                    {

                    continue;

                    }  

                if ( aAddress[c] <= KMuiuCharSpace || 

                    aAddress[c] >= KMuiuCharDel ) 

                    {

                    return EFalse;

                    }

                }

            if ( c++ == length )

                {

                return EFalse;

                }