/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/

#include <clangpathwatcher.h>
#include <connectionserver.h>
#include <environment.h>
#include <pchcreator.h>
#include <pchgenerator.h>
#include <pchmanagerserver.h>
#include <pchmanagerclientproxy.h>
#include <projectparts.h>
#include <stringcache.h>

#include <QCommandLineParser>
#include <QCoreApplication>
#include <QFileSystemWatcher>
#include <QLoggingCategory>
#include <QProcess>
#include <QTemporaryDir>
#include <QTimer>

#include <thread>

using ClangBackEnd::ClangPathWatcher;
using ClangBackEnd::ConnectionServer;
using ClangBackEnd::PchCreator;
using ClangBackEnd::PchGenerator;
using ClangBackEnd::PchManagerClientProxy;
using ClangBackEnd::PchManagerServer;
using ClangBackEnd::ProjectParts;
using ClangBackEnd::FilePathCache;

class ApplicationEnvironment : public ClangBackEnd::Environment
{
public:
    QString pchBuildDirectory() const override
    {
        return temporaryDirectory.path();
    }

    QString clangCompilerPath() const override
    {
        return QString(CLANG_COMPILER_PATH);
    }

    uint hardwareConcurrency() const override
    {
        return std::thread::hardware_concurrency();
    }

private:
    QTemporaryDir temporaryDirectory;
};

QString processArguments(QCoreApplication &application)
{
    QCommandLineParser parser;
    parser.setApplicationDescription(QStringLiteral("Qt Creator Clang PchManager Backend"));
    parser.addHelpOption();
    parser.addVersionOption();
    parser.addPositionalArgument(QStringLiteral("connection"), QStringLiteral("Connection"));

    parser.process(application);

    if (parser.positionalArguments().isEmpty())
        parser.showHelp(1);

    return parser.positionalArguments().first();
}

int main(int argc, char *argv[])
{
    //QLoggingCategory::setFilterRules(QStringLiteral("*.debug=false"));

    QCoreApplication::setOrganizationName(QStringLiteral("QtProject"));
    QCoreApplication::setOrganizationDomain(QStringLiteral("qt-project.org"));
    QCoreApplication::setApplicationName(QStringLiteral("ClangPchManagerBackend"));
    QCoreApplication::setApplicationVersion(QStringLiteral("0.1.0"));

    QCoreApplication application(argc, argv);

    const QString connection =  processArguments(application);

    FilePathCache<> filePathCache;
    ClangPathWatcher<QFileSystemWatcher, QTimer> includeWatcher(filePathCache);
    ApplicationEnvironment environment;
    PchGenerator<QProcess> pchGenerator(environment);
    PchCreator pchCreator(environment, filePathCache);
    pchCreator.setGenerator(&pchGenerator);
    ProjectParts projectParts;
    PchManagerServer clangPchManagerServer(filePathCache,
                                           includeWatcher,
                                           pchCreator,
                                           projectParts);
    includeWatcher.setNotifier(&clangPchManagerServer);
    pchGenerator.setNotifier(&clangPchManagerServer);

    ConnectionServer<PchManagerServer, PchManagerClientProxy> connectionServer(connection);
    connectionServer.start();
    connectionServer.setServer(&clangPchManagerServer);

    return application.exec();
}