/*

* Copyright (c) 2007-2009 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:  ESMR policymmanager implementation

*

*/

#include "cesmrpolicymanager.h"

#include "cesmrpolicy.h"

#include "esmrdef.h"

#include "esmrinternaluid.h"

#include "cesmrcalimportexporter.h"

#include "tesmrentryfield.h"

#include "cmrpolicyresolver.h"

#include "esmrentryhelper.h"

#include "mesmrcalentry.h"

#include "emailtrace.h"

#include <esmrpolicies.rsg>

/// Unnamed namespace for local definitions

namespace {

#ifdef _DEBUG

_LIT( KESMRPolicyMgrPanic, "ESMRPolicyManager" );

enum TESMRPolicyManagerPanic

    {

    EESMRPolicyMgrNoPolicyFound = 1,

    EESMRPolicyMgrPopWithoutPush

    };

void Panic( TESMRPolicyManagerPanic aPanic )

    {

    User::Panic( KESMRPolicyMgrPanic, aPanic );

    }

/**

 * Logs policy information.

 *

 * @param aPolicy Reference to policy.

 */

void LogPolicy(

        const CESMRPolicy& aPolicy )

    {

    const RArray<TESMREntryField>& fieldArray = aPolicy.Fields();

    TInt fieldCount( fieldArray.Count() );

    for ( TInt i(0); i < fieldCount; ++i )

        {

        const TESMREntryField& field = fieldArray[i];

        }

    }

#define LOG_POLICY( x ) { LogPolicy( x ); } 

#else

#define LOG_POLICY( x )

#endif // _DEBUG

}  // namespace

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

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

// CESMRPolicyManager::CESMRPolicyManager

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

//

inline CESMRPolicyManager::CESMRPolicyManager()

    {

    FUNC_LOG;

    //do nothing

    }

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

// CESMRPolicyManager::~CESMRPolicyManager

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

//

EXPORT_C CESMRPolicyManager::~CESMRPolicyManager()

    {

    FUNC_LOG;

    delete iResolverPlugin;

    delete iCurrentPolicy;

    iPolicyStack.ResetAndDestroy();

    }

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

// CESMRPolicyManager::NewL

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

//

EXPORT_C CESMRPolicyManager* CESMRPolicyManager::NewL()

    {

    FUNC_LOG;

    CESMRPolicyManager* self = new (ELeave) CESMRPolicyManager;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

    }

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

// CESMRPolicyManager::ConstructL

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

//

void CESMRPolicyManager::ConstructL()

    {

    FUNC_LOG;

    }

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

// CESMRPolicyManager::CurrentPolicy

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

//

EXPORT_C CESMRPolicy& CESMRPolicyManager::CurrentPolicy()

    {

    CESMRPolicy* currentPolicy = iCurrentPolicy;

    if ( !currentPolicy && iPolicyStack.Count() )

        {

        currentPolicy = iPolicyStack[ iPolicyStack.Count() - 1 ];

        }

    ASSERT( currentPolicy );

    return *currentPolicy;

    }

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

// CESMRPolicyManager::ResolvePolicyL

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

//

EXPORT_C void CESMRPolicyManager::ResolvePolicyL(

        const TESMRScenarioData& aScenarioData,

        MESMRCalEntry& aESMREntry,

        MMRPolicyResolver* aPolicyResolver )

    {

    FUNC_LOG;

    MMRPolicyResolver* policyResolver = NULL;

    if ( aPolicyResolver )

        {

        policyResolver = aPolicyResolver;

        }

    else

        {

        TESMRCalendarEventType type =

            ESMREntryHelper::EventTypeL( aESMREntry.Entry() );

        if ( !iResolverPlugin || !iResolverPlugin->SupportsTypeL( type ) )

            {

            // Instantiate correct resolver

            policyResolver = CMRPolicyResolver::NewL( type );

            delete iResolverPlugin;

            iResolverPlugin = policyResolver;

            }

        else

            {

            // Use default resolver

            policyResolver = iResolverPlugin;

            }

        }

    delete iCurrentPolicy;

    iCurrentPolicy = NULL;

    iCurrentPolicy = policyResolver->ResolveL( aScenarioData );

    // Matching policy not found --> Panic

    __ASSERT_DEBUG( iCurrentPolicy, Panic(EESMRPolicyMgrNoPolicyFound) );

    if ( !iCurrentPolicy )

        {

        User::Leave( KErrNotFound );

        }

    // Logging policy for debugging purposes

    LOG_POLICY( *iCurrentPolicy )

    }

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

// CESMRPolicyManager::PushPolicyL

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

//

EXPORT_C void CESMRPolicyManager::PushPolicyL()

    {

    if ( iCurrentPolicy )

        {

        iPolicyStack.AppendL( iCurrentPolicy );

        iCurrentPolicy = NULL;

        }

    }

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

// CESMRPolicyManager::PopPolicy

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

//

EXPORT_C CESMRPolicy* CESMRPolicyManager::PopPolicy()

    {

    delete iCurrentPolicy;

    iCurrentPolicy = NULL;

    TInt stackCount = iPolicyStack.Count(); 

    if ( stackCount )

        {

        iCurrentPolicy = iPolicyStack[ --stackCount ];

        iPolicyStack.Remove( stackCount );

        }

    __ASSERT_DEBUG( iCurrentPolicy, Panic( EESMRPolicyMgrPopWithoutPush ) );

    return iCurrentPolicy;

    }

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

// CESMRPolicyManager::CurrentPolicy

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

//

const CESMRPolicy& CESMRPolicyManager::CurrentPolicy() const

    {

    CESMRPolicy& policy =

        const_cast< CESMRPolicyManager* >( this )->CurrentPolicy();

    return policy;

    }

// EOF