/* -*- 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 <dispatch/dispatchinformationprovider.hxx>
#include <dispatch/closedispatcher.hxx>

#include <com/sun/star/frame/AppDispatchProvider.hpp>

#include <comphelper/sequence.hxx>

#include <unordered_map>
#include <utility>

namespace framework{

DispatchInformationProvider::DispatchInformationProvider(css::uno::Reference< css::uno::XComponentContext >  xContext ,
                                                         const css::uno::Reference< css::frame::XFrame >&          xFrame)
    : m_xContext    (std::move(xContext                     ))
    , m_xFrame      (xFrame                       )
{
}

DispatchInformationProvider::~DispatchInformationProvider()
{
}

css::uno::Sequence< sal_Int16 > SAL_CALL DispatchInformationProvider::getSupportedCommandGroups()
{
    css::uno::Sequence< css::uno::Reference< css::frame::XDispatchInformationProvider > > lProvider = implts_getAllSubProvider();
    sal_Int32                                                                             c1        = lProvider.getLength();
    sal_Int32                                                                             i1        = 0;

    ::std::vector< sal_Int16 > lGroups;

    for (i1=0; i1<c1; ++i1)
    {
        // ignore controller, which doesn't implement the right interface
        const css::uno::Reference< css::frame::XDispatchInformationProvider >& xProvider = lProvider[i1];
        if (!xProvider.is())
            continue;

        const css::uno::Sequence< sal_Int16 > lProviderGroups = xProvider->getSupportedCommandGroups();
        sal_Int32                             c2              = lProviderGroups.getLength();
        sal_Int32                             i2              = 0;
        for (i2=0; i2<c2; ++i2)
        {
            const sal_Int16&                           rGroup = lProviderGroups[i2];
            ::std::vector< sal_Int16 >::const_iterator pGroup =
                            ::std::find(lGroups.begin(), lGroups.end(), rGroup);
            if (pGroup == lGroups.end())
                lGroups.push_back(rGroup);
        }
    }

    return ::comphelper::containerToSequence(lGroups);
}

css::uno::Sequence< css::frame::DispatchInformation > SAL_CALL DispatchInformationProvider::getConfigurableDispatchInformation(sal_Int16 nCommandGroup)
{
    css::uno::Sequence< css::uno::Reference< css::frame::XDispatchInformationProvider > > lProvider = implts_getAllSubProvider();
    sal_Int32                                                                             c1        = lProvider.getLength();
    sal_Int32                                                                             i1        = 0;

    std::unordered_map<OUString, css::frame::DispatchInformation> lInfos;

    for (i1=0; i1<c1; ++i1)
    {
        try
        {
            // ignore controller, which doesn't implement the right interface
            const css::uno::Reference< css::frame::XDispatchInformationProvider >& xProvider = lProvider[i1];
            if (!xProvider.is())
                continue;

            const css::uno::Sequence< css::frame::DispatchInformation > lProviderInfos = xProvider->getConfigurableDispatchInformation(nCommandGroup);
            sal_Int32                                                   c2             = lProviderInfos.getLength();
            sal_Int32                                                   i2             = 0;
            for (i2=0; i2<c2; ++i2)
            {
                const css::frame::DispatchInformation& rInfo = lProviderInfos[i2];
                auto pInfo = lInfos.find(rInfo.Command);
                if (pInfo == lInfos.end())
                    lInfos[rInfo.Command] = rInfo;
            }
        }
        catch(const css::uno::RuntimeException&)
            { throw; }
        catch(const css::uno::Exception&)
            { continue; }
    }

    return comphelper::mapValuesToSequence(lInfos);
}

css::uno::Sequence< css::uno::Reference< css::frame::XDispatchInformationProvider > > DispatchInformationProvider::implts_getAllSubProvider()
{
    css::uno::Reference< css::frame::XFrame > xFrame(m_xFrame);
    if (!xFrame.is())
        return css::uno::Sequence< css::uno::Reference< css::frame::XDispatchInformationProvider > >();

    rtl::Reference<CloseDispatcher> xCloser = new CloseDispatcher(m_xContext, xFrame, u"_self"); // explicit "_self" ... not "" ... see implementation of close dispatcher itself!

    css::uno::Reference< css::frame::XDispatchInformationProvider > xController   (xFrame->getController()                                      , css::uno::UNO_QUERY);
    css::uno::Reference< css::frame::XDispatchInformationProvider > xAppDispatcher = css::frame::AppDispatchProvider::create(m_xContext);
    css::uno::Sequence< css::uno::Reference< css::frame::XDispatchInformationProvider > > lProvider{
        xController, xCloser, xAppDispatcher
    };

    return lProvider;
}

} // namespace framework

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