/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  CResourceHandleManager

*

*/

#include "config.h"

#include "hashmap.h"

#include "CString.h"

#include "CookieJar.h"

#include "ResourceHandle.h"

#include "ResourceHandleClient.h"

#include "ResourceResponse.h"

#include "ResourceHandleManagerSymbian.h"

#include "ResourceHandleInternal.h"

#include "ResourceError.h"

#include "MimeTypeRegistry.h"

#include "WebCoreFrameBridge.h"

#include "WebCoreKeyValuePair.h"

#include "oom.h"

#include <e32hal.h>

const TUint	KPluginsRescueBuffer = 3*1024*1024; //3MB

#define notImplemented() {}

namespace WebCore {

static CResourceHandleManager* s_self = 0;

void cleanupHandleManager() 

{

    if(s_self){

    	delete s_self;

    	s_self = 0;

    }

}

CResourceHandleManager::CResourceHandleManager()

{

}

CResourceHandleManager::~CResourceHandleManager()

{

}

CResourceHandleManager* CResourceHandleManager::self()

{

    if (!s_self)

        s_self = new CResourceHandleManager();

    return s_self;

}

int CResourceHandleManager::add(ResourceHandle* resource)

{

    ASSERT(resource);

    ResourceHandleInternal* d = resource->getInternal();

    ResourceRequest r = resource->request();

    if (r.httpMethod() != "GET" && r.httpMethod() != "POST" &&

        r.httpMethod() != "DELETE" && r.httpMethod() != "PUT") {

        notImplemented();

        return KErrNotSupported;

    }

	if (d->m_connection)

		return (d->m_connection->submit());

    return KErrNone;

}

void CResourceHandleManager::cancel(ResourceHandle* resource)

{

    ResourceHandleClient* client = resource->client();

    if (!client)

        return;

    MUrlConnection *connection = resource->getInternal()->m_connection;

    if (!connection)

        return;

    if (!connection->m_cancelled) {

        connection->m_cancelled = true;

        connection->cancel();

    }

}

void CResourceHandleManager::receivedResponse(ResourceHandle* resource, ResourceResponse& response, MUrlConnection* connection)

{

    if (!connection)

        return;

    if (connection->m_cancelled)

        return;

    ResourceHandleClient* client = resource->client();

    if (!client)

        return;

    client->didReceiveResponse(resource, response);

}

void CResourceHandleManager::receivedData(ResourceHandle* resource, const TDesC8& data, int contentLength, MUrlConnection* connection)

{

    if (!connection)

        return;

    if (connection->m_cancelled)

        return;

    ResourceHandleClient* client = resource->client();

    if (!client)

        return;

    // check if we have enough memory to handle this request

    if (resource->request().mainLoad()) {        

        client->didReceiveData(resource, (const char*)data.Ptr(), data.Length(), data.Length());

        OOM_POST_CHECK_FAILED(client->didFail(resource, ResourceError(String(), KErrNoMemory, String(), String()));)

    }

    else if (client->isLoadingPlugins()) {

        TMemoryInfoV1Buf info;

        UserHal::MemoryInfo( info );        

        int needed = data.Length();        

        if( needed+KPluginsRescueBuffer < info().iFreeRamInBytes ) {

            client->didReceiveData(resource, (const char*)data.Ptr(), data.Length(), data.Length());            

        } else {

            client->didFail(resource, ResourceError(String(), KErrNoMemory, String(), String()));    

        }

    }

    else {

        int needed = std::max(contentLength, std::max(client->receivedDataBufferSize(), data.Length()));

        OOM_PRE_CHECK(needed<<2, needed<<1, "CResourceHandleManager::receiveData()")        

        client->didReceiveData(resource, (const char*)data.Ptr(), data.Length(), data.Length());

        OOM_POST_CHECK_FAILED(connection->handleError(KErrNoMemory);)

    }

}

void CResourceHandleManager::receivedFinished(ResourceHandle* resource, TInt errorCode, MUrlConnection* connection)

{

    if (!connection)

        return;

    if (connection->m_cancelled)

        return;

    ResourceHandleClient* client = resource->client();

    if (!client)

        return;

    if (connection->m_cancelled) {

        return;

    }

    if (errorCode) {

        client->didFail(resource, ResourceError(String(), errorCode, resource->request().url().url(), String()));

    } else {

        client->didFinishLoading(resource);

    }

}

} // namespace WebCore