/* Copyright (c) 2003, Nokia. All rights reserved */


// INCLUDE FILES
#include <eikenv.h>
#include <coemain.h>
#include <e32std.h>
#include <msvids.h>
#include <msvstd.h>
#include <smsclnt.h>
#include <smut.h>
#include <mtclreg.h>
#include <txtrich.h>
#include <smscmds.h>
#include <mtmuibas.h>
#include <mtmdef.h>
#include <AknNoteWrappers.h>
#include <stringloader.h>
#include <smssend.rsg>
#include "CSmsHandler.h"
#include "CSmsAppUi.h"
#include "smutset.h"
#include "smuthdr.h"


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

// -----------------------------------------------------------------------------
// CSmsHandler::CSmsHandler()
// C++ default constructor can NOT contain any code, that might leave.
// -----------------------------------------------------------------------------
//
CSmsHandler::CSmsHandler( CSmsAppUi* aSmsAppUi )
: CActive( CActive::EPriorityStandard )
    {
    CActiveScheduler::Add( this );
    iSmsAppUi = aSmsAppUi;      // pointer to AppUi
    iNextUnread = 0;            // index of next unread message in iSelection
    }

// -----------------------------------------------------------------------------
// CSmsHandler::ConstructL()
// Symbian 2nd phase constructor can leave.
// -----------------------------------------------------------------------------
//
void CSmsHandler::ConstructL()
    {
    // Session to message server is opened asynchronously.
    iSession = CMsvSession::OpenAsyncL( *this );

    // Entry selection for all received messages.
    iSelection = new ( ELeave ) CMsvEntrySelection();
    }

// -----------------------------------------------------------------------------
// CSmsHandler::NewL()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CSmsHandler* CSmsHandler::NewL( CSmsAppUi* aSmsAppUi )
    {
    CSmsHandler* self = NewLC( aSmsAppUi );
    CleanupStack::Pop( self );
    return self;
    }

// -----------------------------------------------------------------------------
// CSmsHandler::NewLC()
// Two-phased constructor.
// -----------------------------------------------------------------------------
//
CSmsHandler* CSmsHandler::NewLC( CSmsAppUi* aSmsAppUi )
    {
    CSmsHandler* self = new ( ELeave ) CSmsHandler( aSmsAppUi );
    CleanupStack::PushL( self );
    self->ConstructL();
    return self;
    }

// ----------------------------------------------------------
// CSmsHandler::~CSmsHandler()
// Destructor.
// ----------------------------------------------------------
//
CSmsHandler::~CSmsHandler()
    {
    Cancel();           // cancel any outstanding request

    delete iOperation;
    delete iMtmUiRegistry;
    delete iSelection;
	delete iSmsMtm;
    delete iMtmRegistry;
    delete iSession;    // session must be deleted last
    }

// -----------------------------------------------------------------------------
// CSmsHandler::DoCancel()
// Cancels a request.
// -----------------------------------------------------------------------------
//
void CSmsHandler::DoCancel()
    {
    if ( iOperation )
        {
        iOperation->Cancel();
        }
    }

// -----------------------------------------------------------------------------
// CSmsHandler::RunL()
// Handles request completion events.
// -----------------------------------------------------------------------------
//
void CSmsHandler::RunL()
    {
    User::LeaveIfError( iStatus != KErrNone );

    // Determine the current operations progress.
    // ProgressL returns an 8 bit descriptor.
    TBufC8<KMsvProgressBufferLength> progress( iOperation->ProgressL() );
    _LIT8( KCompare, "KErrNone" );
    User::LeaveIfError( !progress.Compare( KCompare ) );

    // The pointer to the current CMsvOperation object is no longer needed.
    delete iOperation;
    iOperation = NULL;

    // Determine which request has finished.
    switch ( iState )
        {
        case EWaitingForMoving:
            // Once a message is moved to Outbox it is scheduled for sending.
            ScheduleL();
            break;

        case EWaitingForScheduling:
            {
            TMsvEntry entry( iSmsMtm->Entry().Entry() );
            TInt state( entry.SendingState() );

            if ( state == KMsvSendStateWaiting || state == KMsvSendStateScheduled)
                {
                HBufC* text = StringLoader::LoadLC( R_SMS_MOVED_TO_OUTBOX );
                CAknInformationNote* informationNote =
                    new ( ELeave ) CAknInformationNote;
                informationNote->ExecuteLD( *text );
                CleanupStack::PopAndDestroy( text );
                }

            break;
            }

        default:
            break;
        }
    }

// -----------------------------------------------------------------------------
// CSmsHandler::HandleSessionEventL()
// Handles notifications of events from the Message Server.
// -----------------------------------------------------------------------------
//
void CSmsHandler::HandleSessionEventL( TMsvSessionEvent aEvent,
                                      TAny* aArg1, TAny* aArg2, TAny* /*aArg3*/)
	{
	switch ( aEvent )
		{
        // Session to server established
		case EMsvServerReady:
            {
            TMsvId serviceId( KUidMsgTypeSMS.iUid ); // SMS service id

            // Determine if the event was succesful.
            // ServiceProgress inserts TBuf8 value in progress.
            TBuf8<KBfrLength> progress;
			iSession->ServiceProgress( serviceId, progress );
			_LIT8( KCompare, "KErrNone" );

			if ( progress.Compare( KCompare ) )
				{
                HBufC* text = StringLoader::LoadLC( R_SMS_SERVER_SESSION );
                CAknInformationNote* informationNote =
                    new ( ELeave ) CAknInformationNote;
                informationNote->ExecuteLD( *text );
                CleanupStack::PopAndDestroy( text );

                // Check that MtmRegistry has not already been accessed.
                if ( !iMtmRegistry )
                    {
                    AccessMtmL();
                    }
                }

            else
				{
                HBufC* text = StringLoader::LoadLC( R_SMS_SESSION_ERROR );
                CAknErrorNote* errorNote = new ( ELeave ) CAknErrorNote;
                errorNote->ExecuteLD( *text );
                CleanupStack::PopAndDestroy( text );
                }

            break;
            }

        // A new entry has been created on the message server.
        case EMsvEntriesCreated:
            {
            // Entry id is obtained from the session event arguments.
            TMsvId* entryId = STATIC_CAST( TMsvId*, aArg2 );

            // We are interested in messages that are created in Inbox.
            if ( *entryId != KMsvGlobalInBoxIndexEntryId )
                {
                break;
                }

            // We take the created entries into a selection
            CMsvEntrySelection* newEntries =
                STATIC_CAST( CMsvEntrySelection*, aArg1 );

            // Process each created entry.
            for ( TInt i( 0 ); i < newEntries->Count(); i++ )
                {
    			CMsvEntry* serverEntry = iSession->GetEntryL( newEntries->At( i ) );
    			CleanupStack::PushL(serverEntry);
                
                // We are interested in SMS messages.
                if ( serverEntry->Entry().iMtm == KUidMsgTypeSMS )
                    {
                    // Add the entry to the selection of all received messages.
                    iSelection->AppendL( newEntries->At( i ), 1 );

                    // Set received messages visible.
                    MessageReceivedL( newEntries->At( i ) );
                    }                    

				CleanupStack::PopAndDestroy(serverEntry);
                }
            break;
            }

        case EMsvCloseSession:
        case EMsvServerTerminated:
        case EMsvGeneralError:
        case EMsvServerFailedToStart:
            {
            iSmsAppUi->ServerDown( aEvent );    // close application
            break;
            }

        // All other events are ignored.
        default:
            break;
        }
    }

// -----------------------------------------------------------------------------
// CSmsHandler::AccessMtmL()
// Access the MTM Registry and create a SMS specific Client MTM instance.