/*

* Copyright (c) 2004-2007 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:  

*     State machine for sending a delete request to network

*

*/

// INCLUDE FILES

#include    <apparc.h>

#include    <msventry.h>

#include    <msvids.h>

#include    <logcli.h>

#include    <commdb.h>

#include    <in_sock.h>

#include    <commdbconnpref.h>

// the rest are local includes, needed always

#include    "mmsconst.h"

#include    "mmsdeleteoperation.h"

#include    "mmssession.h"

#include    "mmssettings.h"

#include    "mmsservercommon.h"

#include    "mmsheaders.h"

#include    "mmsmmboxmessageheaders.h"

#include    "mmsencode.h"

#include    "mmsdecode.h"

#include    "mmsscheduledentry.h"

#include    "mmsgenutils.h"

#include    "mmserrors.h"

#include    "mmsserverentry.h"

#include    "mmsconninit.h"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES  

extern void gPanic( TMmsPanic aPanic );

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// ==================== LOCAL FUNCTIONS ====================

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

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

// CMmsDeleteOperation::CMmsDeleteOperation

//

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

//

CMmsDeleteOperation::CMmsDeleteOperation( RFs& aFs ):

    CMmsBaseOperation( aFs )

    {

    //

    // members that get initial value 0, need not be initialized here

    //

    }

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

// CMmsDeleteOperation::ConstructL

//

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

//

void CMmsDeleteOperation::ConstructL( CMmsSettings* aMmsSettings )

    {

    CMmsBaseOperation::ConstructL( aMmsSettings );

    iMmsRequestHeaders = CMmsHeaders::NewL( iMmsSettings->MmsVersion() );

    CActiveScheduler::Add( this );

    }

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

// CMmsDeleteOperation::NewL

//

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

//

CMmsDeleteOperation* CMmsDeleteOperation::NewL( RFs& aFs, CMmsSettings* aMmsSettings )

    {

    CMmsDeleteOperation* self = new ( ELeave ) CMmsDeleteOperation( aFs );

    CleanupStack::PushL( self );

    self->ConstructL( aMmsSettings );

    CleanupStack::Pop( self );

    return self;

    }

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

// CMmsDeleteOperation::~CMmsDeleteOperation

//

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

//

CMmsDeleteOperation::~CMmsDeleteOperation()

    {

    Cancel();

    delete iMmsRequestHeaders;

    }

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

// CMmsDeleteOperation::DoCancel

//

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

//

void CMmsDeleteOperation::DoCancel()

    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::DoCancel") );

    #endif

    CMmsBaseOperation::DoCancel();

    // Clear possible flags

    for( TInt i = iSelection->Count()-1; i >= 0; i-- )

        {

        // original entry

        if ( iServerEntry->SetEntry( iSelection->At( i ) ) == KErrNone )

            {

            TMsvEntry tEntry = iServerEntry->Entry();

            TMsvId parent = tEntry.Parent();

            // If notification in iSelection is in mmbox folder, mark the

            // possible duplicate notification in inbox too. 

            if ( parent == iMmsSettings->MMBoxFolder() )

                { 

    #ifndef _NO_MMSS_LOGGING_

                TMmsLogger::Log( _L("possible duplicates has to be checked") );

    #endif            

                TInt error = KErrNone;

                TRAP ( error, MarkDuplicateL( EMmsNotificationOperationFailed, *iServerEntry ) );

    #ifndef _NO_MMSS_LOGGING_

                TMmsLogger::Log( _L("Trap failed: error %d "), error );

    #endif

                }

            // reload to make sure any changes are included

            // (there should be no changes)

            tEntry = iServerEntry->Entry();

            MarkNotificationOperationFailed( tEntry );

            // put to read only state after duplicates have been marked

            // because MarkDuplicateL may want to edit link to related entry

            tEntry.SetReadOnly( ETrue );

            iServerEntry->ChangeEntry( tEntry );        

            }

        }

    }

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

// CMmsDeleteOperation::StartL

//

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

//

void CMmsDeleteOperation::StartL(

    TMmsDeleteOperationType aDeleteType,

    CMsvEntrySelection& aSelection,

    CMsvServerEntry& aServerEntry,

    TMsvId aService,

    TRequestStatus& aStatus )

    {

    iDeleteType = aDeleteType;

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::StartL") );

    if( iDeleteType == EMmsDeleteNotificationOnly ) TMmsLogger::Log( _L("- EMmsDeleteNotificationOnly") );

    if( iDeleteType == EMmsDeleteMMBoxOnly ) TMmsLogger::Log( _L("- EMmsDeleteMMBoxOnly") );

    if( iDeleteType == EMmsDeleteBoth ) TMmsLogger::Log( _L("- EMmsDeleteBoth") );

    #endif

    // Make sure the version number is correctly set

    CMmsBaseOperation::StartL( aSelection, aServerEntry, aService, aStatus );

    iMmsRequestHeaders->Reset();

    //

    // Delete operation does not work as regular operations:

    //

    // iFailed list is emptied because retries are not used for delete

    iFailed->Reset();

    // iCurrentMessageNo makes no sense in case of delete

    iCurrentMessageNo = 0;

    }

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

// CMmsDeleteOperation::StartL

// This just overrides the base class version.

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

//

void CMmsDeleteOperation::StartL(

    CMsvEntrySelection&,

    CMsvServerEntry&,

    TMsvId,

    TRequestStatus& )

    {

    User::Leave( KErrNotSupported );

    }

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

// CMmsDeleteOperation::EncodePDUL

//

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

//

void CMmsDeleteOperation::EncodePDUL()

    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::EncodePDU") );

    #endif

    TInt err = KErrNone;  // used to trap errors that are not propagated further

    // Go through iSelection and make various checks   

    TMsvEntry tEntry;

    for( TInt i = iSelection->Count()-1; i >= 0; i-- )

        {

        if ( iServerEntry->SetEntry( iSelection->At( i ) ) == KErrNone )

            {

            tEntry = iServerEntry->Entry();

            // Check that selection contains only "idle" notifications

            if( ( tEntry.iMtm != KUidMsgMMSNotification ) ||

                ( tEntry.iMtm == KUidMsgMMSNotification && 

                tEntry.iMtmData2 & KMmsNewOperationForbidden ) )

                {

                // Take out all non-notifications and notifications that have some operation ongoing

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- notif not idle, skipping" ) );

    #endif

                iSelection->Delete( i );

                }

            else

                {

                // If only local delete requested, delete the entry

                if( iDeleteType == EMmsDeleteNotificationOnly )

                    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- just deleting the notif entry" ) );

    #endif

                    TRAP( err, DeleteNotificationEntryL() );

    #ifndef _NO_MMSS_LOGGING_

                    if( err != KErrNone )

                        {

                        TMmsLogger::Log( _L( "- ERROR: DeleteNotificationEntryL left" ) );

                        }

    #endif

                    iSelection->Delete( i );

                    }

                else // EMmsDeleteMMBoxOnly OR EMmsDeleteBoth

                    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- mmbox deletion wanted" ) );

    #endif

                    // Is there a message in MMBox.

                    if( !(tEntry.iMtmData2 & KMmsStoredInMMBox ) )

                        {

                        // No need to care about possible duplicate notification. 

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- accordig to mmbox flag, message is not in mmbox" ) );

    #endif

                        // If both requested, but no message in MMBox,

                        // just delete the notification.

                        if( iDeleteType == EMmsDeleteBoth )

                            {                        

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- local deletion requested, performing it" ) );

    #endif

                            TRAP( err, DeleteNotificationEntryL() );

    #ifndef _NO_MMSS_LOGGING_

                            if( err != KErrNone )

                                {

                                TMmsLogger::Log( _L( "- ERROR: DeleteNotificationEntryL left" ) );

                                }

    #endif

                            }

                        else // iDeleteType == EMmsDeleteMMBoxOnly

                            {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- can not delete from mmbox, clearing entry flags" ) );

    #endif

                            MarkNotificationOperationFailed( tEntry );

                            tEntry.SetReadOnly( ETrue );

                            iServerEntry->ChangeEntry( tEntry );

                            }

                        // As message not in MMBox, delete entry from selection

                        iSelection->Delete( i );

                        }

                    }

                }

            }

        else

            {

            // take out an entry that could not be accessed

            iSelection->Delete( i );

            }

        }

    // delete from mmbox is wanted and the notifications are stored in mmbox

    // Check duplicates, if the parent is in mmbox folder.

    // If duplicate is found, check if the duplicate is free. 

    // If the duplicate is free, mark the duplicate as "deleting operation going on". 

    // If duplicate is not free, drop the original notification from iSelection.

    for ( TInt j = iSelection->Count()-1; j >= 0; j-- )

        {

        if ( iServerEntry->SetEntry( iSelection->At( j ) ) == KErrNone ) 

            {

            // if original notification cannot be accessed there is no way

            // to check the notification

            tEntry = iServerEntry->Entry();

            if ( tEntry.Parent() == iMmsSettings->MMBoxFolder() )

                {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- check if duplicate is found" ) );

    #endif

                // parent is mmbox folder.

                CMmsHeaders* mmsHeaders = CMmsHeaders::NewL( iMmsSettings->MmsVersion() );

                CleanupStack::PushL( mmsHeaders ); 

                CMsvStore* store = iServerEntry->ReadStoreL();

                CleanupStack::PushL( store );           

                mmsHeaders->RestoreL( *store );

                CleanupStack::PopAndDestroy( store );

                store = NULL;

                TMsvId duplicate = KMsvNullIndexEntryId;

                FindDuplicateNotificationL( KMsvGlobalInBoxIndexEntryIdValue,

                    *mmsHeaders, duplicate );

                if ( duplicate != KMsvNullIndexEntryId )

                    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- duplicate found" ) );

    #endif

                    if ( iServerEntry->SetEntry( duplicate ) == KErrNone )

                        {

                        // Mark duplicate, if it is free for a new operation

                        TMsvEntry dupEntry = iServerEntry->Entry();

                        if ( FreeNotification( dupEntry, KMmsOperationDelete ) )

                            {

    #ifndef _NO_MMSS_LOGGING_

                            TMmsLogger::Log( _L( "- Marking duplicate" ) );

    #endif

                            MarkNotificationOperationReserved( dupEntry, KMmsOperationDelete );

                            iServerEntry->ChangeEntry( dupEntry );

                            // Set duplicate as related entry to the original notification

                            if ( iServerEntry->SetEntry( iSelection->At( j ) ) == KErrNone )

                                {

                                tEntry = iServerEntry->Entry();

                                tEntry.SetReadOnly( EFalse );

                                iServerEntry->ChangeEntry( tEntry );

                                store = iServerEntry->EditStoreL();

                                CleanupStack::PushL( store );

                                mmsHeaders->RestoreL( *store );

                                mmsHeaders->SetRelatedEntry( duplicate );

                                mmsHeaders->StoreL( *store );

                                store->CommitL();

                                CleanupStack::PopAndDestroy( store );

                                store = NULL;

                                }

                            }

                        else

                            {

                            // duplicate is not free, drop the original from iSelection. 

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L( "- Duplicate is not free, drop the original notification from selection" ) );

    #endif

                            iSelection->Delete( j );

                            }

                        }

                    }

                CleanupStack::PopAndDestroy( mmsHeaders );

                }

            }

        }

    // iSelection contains notifications that are deleted from mmbox

    // Mark notifications as "deleting operation going on"

    for ( TInt k = iSelection->Count()-1; k >= 0; k--  )

        {

        if ( iServerEntry->SetEntry( iSelection->At( k ) ) == KErrNone )

            {

            tEntry = iServerEntry->Entry();

    #ifndef _NO_MMSS_LOGGING_

            TMmsLogger::Log( _L( "- reserve notif for deletion" ) );

    #endif

            // Mark all remaining notifications as operation-ongoing

            // operation is from now on delete

            MarkNotificationOperationReserved( tEntry, KMmsOperationDelete );

            tEntry.SetReadOnly( EFalse );   

            iServerEntry->ChangeEntry( tEntry );

            }

        }

    // 

    // If remote delete is required, creating PDU to be sent

    //

    if( ( iDeleteType != EMmsDeleteNotificationOnly ) && 

        ( iSelection->Count() > 0 ) )

        {

#ifndef _NO_MMSS_LOGGING_

TMmsLogger::Log( _L( "- creating PDU" ) );

#endif

        //

        // Create headers structure

        //

        // iMmsRequestHeaders is a member that has been created in the constructor

        // And Reset in the StartL function

        // MessageType

        iMmsRequestHeaders->SetMessageType( KMmsMessageTypeMBoxDeleteReq );

        // TransactionId

        TBufC8<KMMSMAXTIDLENGTH> tid;

        tid.Des().NumUC( AllocateTID(), EHex );

        iMmsRequestHeaders->SetTidL( tid );

        //

        // Content-Location array

        // Loop through selection and put all content locations into array

        //

        CMmsHeaders* mmsHeaders = CMmsHeaders::NewL( iMmsSettings->MmsVersion() );

        CleanupStack::PushL( mmsHeaders ); // ***

        for( TInt i = iSelection->Count() - 1; i >= 0; i-- )

            {

            // Get entry

            if ( iServerEntry->SetEntry( iSelection->At( i ) ) == KErrNone )

                {

                // Get read-only message store

                CMsvStore* store = iServerEntry->ReadStoreL();

                CleanupStack::PushL( store ); // ***

                // Restore all parts of multimedia message

                mmsHeaders->RestoreL( *store );

                // Add array to headers

                iMmsRequestHeaders->MMBoxMessageHeadersL().ContentLocationList()

                    .AppendL( mmsHeaders->ContentLocation() );

                CleanupStack::PopAndDestroy( store );

                }

            }

        CleanupStack::PopAndDestroy( mmsHeaders );

        //

        // Encode the PDU

        //

        iEncoder->EncodeHeadersL( *iMmsRequestHeaders, *iEncodeBuffer );

        }

    iServerEntry->SetEntry( KMsvNullIndexEntryId );

    FallThrough();

    }

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

// CMmsDeleteOperation::ConnectToIAPL

//

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

//

void CMmsDeleteOperation::ConnectToIAPL()

    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::ConnectToIAPL") );

    #endif

    if( iDeleteType == EMmsDeleteNotificationOnly || iSelection->Count() == 0 )

        {

        FallThrough();

        }

    else 

        {

        CMmsBaseOperation::ConnectToIAPL();

        }

    }

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

// CMmsDeleteOperation::InitializeSessionL

//

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

//

void CMmsDeleteOperation::InitializeSessionL()

    {

    #ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::InitializeSessionL") );

    #endif

    if( iDeleteType == EMmsDeleteNotificationOnly || iSelection->Count() == 0 )

        {

        FallThrough();

        }

    else 

        {

        CMmsBaseOperation::InitializeSessionL();

        }

    }

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

// CMmsDeleteOperation::SubmitTransactionL

//

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

//

void CMmsDeleteOperation::SubmitTransactionL()

    {

#ifndef _NO_MMSS_LOGGING_

    TMmsLogger::Log( _L("CMmsDeleteOperation::SubmitTransactionL"));

#endif

    //

    // Maybe networking not needed at all

    // 

    if( iDeleteType == EMmsDeleteNotificationOnly || iSelection->Count() == 0 )

        {

        FallThrough();

        return;