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** Copyright (C) 2018 The Qt Company Ltd.
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** GNU General Public License Usage
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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 "clangtoolsprojectsettings.h"

#include <projectexplorer/session.h>

#include <utils/algorithm.h>

namespace ClangTools {
namespace Internal {

static const char SETTINGS_KEY_SELECTED_DIRS[] = "ClangTools.SelectedDirs";
static const char SETTINGS_KEY_SELECTED_FILES[] = "ClangTools.SelectedFiles";

ClangToolsProjectSettings::ClangToolsProjectSettings(ProjectExplorer::Project *project)
    : m_project(project)
{
    load();
    connect(project, &ProjectExplorer::Project::settingsLoaded,
            this, &ClangToolsProjectSettings::load);
    connect(project, &ProjectExplorer::Project::aboutToSaveSettings, this,
            &ClangToolsProjectSettings::store);
}

ClangToolsProjectSettings::~ClangToolsProjectSettings()
{
    store();
}

void ClangToolsProjectSettings::load()
{
    auto toFileName = [](const QString &s) { return Utils::FileName::fromString(s); };

    const QStringList dirs = m_project->namedSettings(SETTINGS_KEY_SELECTED_DIRS).toStringList();
    m_selectedDirs = Utils::transform<QSet>(dirs, toFileName);

    const QStringList files = m_project->namedSettings(SETTINGS_KEY_SELECTED_FILES).toStringList();
    m_selectedFiles = Utils::transform<QSet>(files, toFileName);
}

void ClangToolsProjectSettings::store()
{
    const QStringList dirs = Utils::transform(m_selectedDirs.toList(), &Utils::FileName::toString);
    m_project->setNamedSettings(SETTINGS_KEY_SELECTED_DIRS, dirs);

    const QStringList files = Utils::transform(m_selectedFiles.toList(), &Utils::FileName::toString);
    m_project->setNamedSettings(SETTINGS_KEY_SELECTED_FILES, files);
}

ClangToolsProjectSettingsManager::ClangToolsProjectSettingsManager()
{
    QObject::connect(ProjectExplorer::SessionManager::instance(),
                     &ProjectExplorer::SessionManager::aboutToRemoveProject,
                     &ClangToolsProjectSettingsManager::handleProjectToBeRemoved);
}

ClangToolsProjectSettings *ClangToolsProjectSettingsManager::getSettings(
    ProjectExplorer::Project *project)
{
    auto &settings = m_settings[project];
    if (!settings)
        settings.reset(new ClangToolsProjectSettings(project));
    return settings.data();
}

void ClangToolsProjectSettingsManager::handleProjectToBeRemoved(ProjectExplorer::Project *project)
{
    m_settings.remove(project);
}

ClangToolsProjectSettingsManager::SettingsMap ClangToolsProjectSettingsManager::m_settings;

} // namespace Internal
} // namespace ClangTools