/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_ucbhelper.hxx"
#include <ucbhelper/registerucb.hxx>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/ucb/XContentProviderManager.hpp>
#include <com/sun/star/ucb/XParameterizedContentProvider.hpp>
#include <com/sun/star/ucb/XContentProviderFactory.hpp>
#include <com/sun/star/uno/RuntimeException.hpp>

#include "osl/diagnose.h"

using namespace com::sun::star;

namespace ucbhelper {

//============================================================================
//
//  registerAtUcb
//
//============================================================================

bool
registerAtUcb(
    uno::Reference< ucb::XContentProviderManager > const & rManager,
	uno::Reference< lang::XMultiServiceFactory > const & rServiceFactory,
	rtl::OUString const & rName,
	rtl::OUString const & rArguments,
	rtl::OUString const & rTemplate,
	ContentProviderRegistrationInfo * pInfo)
	throw (uno::RuntimeException)
{
	OSL_ENSURE(rServiceFactory.is(),
			   "ucb::registerAtUcb(): No service factory");

	bool bNoProxy
		= rArguments.compareToAscii(RTL_CONSTASCII_STRINGPARAM("{noproxy}"))
		      == 0;
	rtl::OUString
		aProviderArguments(bNoProxy ?
						       rArguments.
						           copy(RTL_CONSTASCII_LENGTH("{noproxy}")) :
						       rArguments);

	// First, try to instantiate proxy for provider:
	uno::Reference< ucb::XContentProvider > xProvider;
	if (!bNoProxy)
	{
		uno::Reference< ucb::XContentProviderFactory > xProxyFactory;
		try
		{
			xProxyFactory
				= uno::Reference< ucb::XContentProviderFactory >(
					  rServiceFactory->
				          createInstance(
							  rtl::OUString(
								  RTL_CONSTASCII_USTRINGPARAM(
							"com.sun.star.ucb.ContentProviderProxyFactory"))),
					  uno::UNO_QUERY);
		}
		catch (uno::Exception const &) {}
		OSL_ENSURE(xProxyFactory.is(), "No ContentProviderProxyFactory");
		if (xProxyFactory.is())
			xProvider = xProxyFactory->createContentProvider(rName);
	}

	// Then, try to instantiate provider directly:
	if (!xProvider.is())
		try
		{
			xProvider = uno::Reference< ucb::XContentProvider >(
				            rServiceFactory->createInstance(rName),
							uno::UNO_QUERY);
		}
		catch (uno::RuntimeException const &) { throw; }
		catch (uno::Exception const &) {}

	uno::Reference< ucb::XContentProvider >
		xOriginalProvider(xProvider);
	uno::Reference< ucb::XParameterizedContentProvider >
		xParameterized(xProvider, uno::UNO_QUERY);
	if (xParameterized.is())
	{
		uno::Reference< ucb::XContentProvider > xInstance;
		try
		{
			xInstance = xParameterized->registerInstance(rTemplate,
														 aProviderArguments,
														 true);
				//@@@ if this call replaces an old instance, the commit-or-
				// rollback code below will not work
		}
		catch (lang::IllegalArgumentException const &) {}

		if (xInstance.is())
			xProvider = xInstance;
	}

	bool bSuccess = false;
	if (rManager.is() && xProvider.is())
		try
		{
			rManager->registerContentProvider(xProvider, rTemplate, true);
			bSuccess = true;
		}
		catch (ucb::DuplicateProviderException const &)
		{
			if (xParameterized.is())
				try
				{
					xParameterized->deregisterInstance(rTemplate,
													   aProviderArguments);
				}
				catch (lang::IllegalArgumentException const &) {}
		}
		catch (...)
		{
			if (xParameterized.is())
				try
				{
					xParameterized->deregisterInstance(rTemplate,
													   aProviderArguments);
				}
				catch (lang::IllegalArgumentException const &) {}
				catch (uno::RuntimeException const &) {}
			throw;
		}

	if (bSuccess && pInfo)
	{
		pInfo->m_xProvider = xOriginalProvider;
		pInfo->m_aArguments = aProviderArguments;
		pInfo->m_aTemplate = rTemplate;
	}
	return bSuccess;
}

}