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** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
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** accordance with the commercial license agreement provided with the
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** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
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#include "clangrefactoringplugin.h"

#include <cpptools/cppmodelmanager.h>

#include <coreplugin/icore.h>

#include <utils/hostosinfo.h>

namespace ClangRefactoring {

namespace {

QString backendProcessPath()
{
    return Core::ICore::libexecPath()
            + QStringLiteral("/clangrefactoringbackend")
            + QStringLiteral(QTC_HOST_EXE_SUFFIX);
}

} // anonymous namespace

std::unique_ptr<RefactoringClient> ClangRefactoringPlugin::client;
std::unique_ptr<ClangBackEnd::RefactoringConnectionClient> ClangRefactoringPlugin::connectionClient;
std::unique_ptr<RefactoringEngine> ClangRefactoringPlugin::engine;

bool ClangRefactoringPlugin::initialize(const QStringList & /*arguments*/, QString * /*errorMessage*/)
{
    client.reset(new RefactoringClient);
    connectionClient.reset(new ClangBackEnd::RefactoringConnectionClient(client.get()));
    engine.reset(new RefactoringEngine(connectionClient->serverProxy(), *client));

    client->setRefactoringEngine(engine.get());

    connectBackend();
    startBackend();

    return true;
}

void ClangRefactoringPlugin::extensionsInitialized()
{
    CppTools::CppModelManager::setRefactoringEngine(&refactoringEngine());
}

ExtensionSystem::IPlugin::ShutdownFlag ClangRefactoringPlugin::aboutToShutdown()
{
    engine.reset();
    connectionClient.reset();
    client.reset();

    return SynchronousShutdown;
}

RefactoringEngine &ClangRefactoringPlugin::refactoringEngine()
{
    return *engine;
}

void ClangRefactoringPlugin::startBackend()
{
    connectionClient->setProcessPath(backendProcessPath());

    connectionClient->startProcessAndConnectToServerAsynchronously();
}

void ClangRefactoringPlugin::connectBackend()
{
    connect(connectionClient.get(),
            &ClangBackEnd::RefactoringConnectionClient::connectedToLocalSocket,
            this,
            &ClangRefactoringPlugin::backendIsConnected);
}

void ClangRefactoringPlugin::backendIsConnected()
{
    engine->setUsable(true);
}

} // namespace ClangRefactoring