/* -*- 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 .
 */

#pragma once

#include <memory>
#include <file/FConnection.hxx>
#include <com/sun/star/frame/XDesktop2.hpp>
#include <com/sun/star/frame/XTerminateListener.hpp>
#include <rtl/ref.hxx>
#include <unotools/closeveto.hxx>

namespace com::sun::star {
    namespace sheet { class XSpreadsheetDocument; }
}

namespace utl { class CloseVeto; }


namespace connectivity::calc
    {
        class ODriver;
        class OCalcConnection : public file::OConnection
        {
            // the spreadsheet document:
            css::uno::Reference< css::sheet::XSpreadsheetDocument > m_xDoc;
            OUString m_sPassword;
            OUString m_aFileName;
            oslInterlockedCount m_nDocCount;

            class CloseVetoButTerminateListener : public cppu::WeakComponentImplHelper<css::frame::XTerminateListener>
            {
            private:
                /// close listener that vetoes so nobody else disposes m_xDoc
                std::unique_ptr<utl::CloseVeto> m_pCloseListener;
                /// but also listen to XDesktop and if app is terminating anyway, dispose m_xDoc while
                /// its still possible to do so properly
                css::uno::Reference<css::frame::XDesktop2> m_xDesktop;
                osl::Mutex m_aMutex;
            public:
                CloseVetoButTerminateListener()
                    : cppu::WeakComponentImplHelper<css::frame::XTerminateListener>(m_aMutex)
                {
                }

                void start(const css::uno::Reference<css::uno::XInterface>& rCloseable,
                           const css::uno::Reference<css::frame::XDesktop2>& rDesktop)
                {
                    m_xDesktop = rDesktop;
                    m_xDesktop->addTerminateListener(this);
                    m_pCloseListener.reset(new utl::CloseVeto(rCloseable, true));
                }

                void stop()
                {
                    m_pCloseListener.reset();
                    if (!m_xDesktop.is())
                        return;
                    m_xDesktop->removeTerminateListener(this);
                    m_xDesktop.clear();
                }

                // XTerminateListener
                virtual void SAL_CALL queryTermination(const css::lang::EventObject& /*rEvent*/) override
                {
                }

                virtual void SAL_CALL notifyTermination(const css::lang::EventObject& /*rEvent*/) override
                {
                    stop();
                }

                virtual void SAL_CALL disposing() override
                {
                    stop();
                    cppu::WeakComponentImplHelperBase::disposing();
                }

                virtual void SAL_CALL disposing(const css::lang::EventObject& rEvent) override
                {
                    const bool bShutDown = (rEvent.Source == m_xDesktop);
                    if (bShutDown)
                        stop();
                }
            };

            rtl::Reference<CloseVetoButTerminateListener> m_xCloseVetoButTerminateListener;

        public:
            OCalcConnection(ODriver* _pDriver);
            virtual ~OCalcConnection() override;

            virtual void construct(const OUString& _rUrl,
                                   const css::uno::Sequence< css::beans::PropertyValue >& _rInfo ) override;

            // XServiceInfo
            DECLARE_SERVICE_INFO();

            // OComponentHelper
            virtual void SAL_CALL disposing() override;

            // XConnection
            virtual css::uno::Reference< css::sdbc::XDatabaseMetaData > SAL_CALL getMetaData(  ) override;
            virtual css::uno::Reference< css::sdbcx::XTablesSupplier > createCatalog() override;
            virtual css::uno::Reference< css::sdbc::XStatement > SAL_CALL createStatement(  ) override;
            virtual css::uno::Reference< css::sdbc::XPreparedStatement > SAL_CALL prepareStatement( const OUString& sql ) override;
            virtual css::uno::Reference< css::sdbc::XPreparedStatement > SAL_CALL prepareCall( const OUString& sql ) override;

            // no interface methods
            css::uno::Reference< css::sheet::XSpreadsheetDocument> const & acquireDoc();
            void releaseDoc();

            class ODocHolder
            {
                OCalcConnection* m_pConnection;
                css::uno::Reference< css::sheet::XSpreadsheetDocument> m_xDoc;
            public:
                ODocHolder(OCalcConnection* _pConnection) : m_pConnection(_pConnection)
                {
                    m_xDoc = m_pConnection->acquireDoc();
                }
                ~ODocHolder()
                {
                    m_xDoc.clear();
                    m_pConnection->releaseDoc();
                }
                const css::uno::Reference< css::sheet::XSpreadsheetDocument>& getDoc() const { return m_xDoc; }
            };
        };

}

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