/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

 * This file is part of the LibreOffice project.

 *

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

 *

 * This file incorporates work covered by the following license notice:

 *

 *   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 .

 */

#include <comphelper/logging.hxx>

#include <com/sun/star/logging/LoggerPool.hpp>

#include <comphelper/diagnose_ex.hxx>

#include <osl/diagnose.h>

namespace comphelper

{

    using ::com::sun::star::uno::Reference;

    using ::com::sun::star::uno::XComponentContext;

    using ::com::sun::star::logging::XLoggerPool;

    using ::com::sun::star::logging::LoggerPool;

    using ::com::sun::star::logging::XLogger;

    using ::com::sun::star::uno::Exception;

    class EventLogger_Impl

    {

    private:

        Reference< XLogger >            m_xLogger;

    public:

        EventLogger_Impl( const Reference< XComponentContext >& _rxContext, const OUString& _rLoggerName );

        bool isValid() const { return m_xLogger.is(); }

        const Reference< XLogger >& getLogger() const { return m_xLogger; }

    };

    namespace

    {

        Reference<XLogger> createLogger(const Reference<XComponentContext>& rxContext, const OUString& rLoggerName)

        {

            try

            {

                Reference<XLoggerPool> xPool(LoggerPool::get(rxContext));

                if (!rLoggerName.isEmpty())

                    return xPool->getNamedLogger(rLoggerName);

                else

                    return xPool->getDefaultLogger();

            }

            catch( const Exception& )

            {

                TOOLS_WARN_EXCEPTION(

                    "comphelper", "EventLogger_Impl::impl_createLogger_nothrow: caught an exception!" );

            }

            return Reference<XLogger>();

        }

    }

    EventLogger_Impl::EventLogger_Impl(const Reference< XComponentContext >& _rxContext, const OUString& rLoggerName)

        : m_xLogger(createLogger(_rxContext, rLoggerName))

    {

    }

    EventLogger::EventLogger( const Reference< XComponentContext >& _rxContext, const char* _pAsciiLoggerName )

        :m_pImpl( std::make_shared<EventLogger_Impl>( _rxContext, OUString::createFromAscii( _pAsciiLoggerName ) ) )

    {

    }

    bool EventLogger::isLoggable( const sal_Int32 _nLogLevel ) const

    {

        if ( !m_pImpl->isValid() )

            return false;

        try

        {

            return m_pImpl->getLogger()->isLoggable( _nLogLevel );

        }

        catch( const Exception& )

        {

            TOOLS_WARN_EXCEPTION( "comphelper", "EventLogger::isLoggable: caught an exception!" );

        }

        return false;

    }

    const css::uno::Reference<css::logging::XLogger> & EventLogger::getLogger() const

    {

        return m_pImpl->getLogger();

    }

    namespace

    {

        void lcl_replaceParameter( OUString& _inout_Message, const char* _rPlaceHolder, std::u16string_view _rReplacement )

        {

            sal_Int32 nPlaceholderPosition = _inout_Message.indexOfAsciiL( _rPlaceHolder, strlen(_rPlaceHolder) );

            OSL_ENSURE( nPlaceholderPosition >= 0, "lcl_replaceParameter: placeholder not found!" );

            if ( nPlaceholderPosition < 0 )

                return;

            _inout_Message = _inout_Message.replaceAt( nPlaceholderPosition, strlen(_rPlaceHolder), _rReplacement );

        }

    }

    void EventLogger::impl_log( const sal_Int32 _nLogLevel,

        const char* _pSourceClass, const char* _pSourceMethod, const OUString& _rMessage,

        const OptionalString& _rArgument1, const OptionalString& _rArgument2,

        const OptionalString& _rArgument3, const OptionalString& _rArgument4,

        const OptionalString& _rArgument5, const OptionalString& _rArgument6 ) const

    {

        OUString sMessage( _rMessage );

        if ( !!_rArgument1 )

            lcl_replaceParameter( sMessage, "$1$", *_rArgument1 );

        if ( !!_rArgument2 )

            lcl_replaceParameter( sMessage, "$2$", *_rArgument2 );

        if ( !!_rArgument3 )

            lcl_replaceParameter( sMessage, "$3$", *_rArgument3 );

        if ( !!_rArgument4 )

            lcl_replaceParameter( sMessage, "$4$", *_rArgument4 );

        if ( !!_rArgument5 )

            lcl_replaceParameter( sMessage, "$5$", *_rArgument5 );

        if ( !!_rArgument6 )

            lcl_replaceParameter( sMessage, "$6$", *_rArgument6 );

        try

        {

            Reference< XLogger > xLogger( m_pImpl->getLogger() );

            OSL_PRECOND( xLogger.is(), "EventLogger::impl_log: should never be called without a logger!" );

            if ( _pSourceClass && _pSourceMethod )

            {

                xLogger->logp(

                    _nLogLevel,

                    OUString::createFromAscii( _pSourceClass ),

                    OUString::createFromAscii( _pSourceMethod ),

                    sMessage

                );

            }

            else

            {

                xLogger->log( _nLogLevel, sMessage );

            }

        }

        catch( const Exception& )

        {

            TOOLS_WARN_EXCEPTION( "comphelper", "EventLogger::impl_log: caught an exception!" );

        }

    }

} // namespace comphelper

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