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#include "cppcodemodelsettings.h"
#include "cppmodelmanagersupport.h"
#include "cpptoolsconstants.h"

using namespace CppTools;

static QLatin1String cppHeaderMimeType(Constants::CPP_HEADER_MIMETYPE);
static QLatin1String cHeaderMimeType(Constants::C_HEADER_MIMETYPE);
static QLatin1String clangExtraOptionsKey(Constants::CPPTOOLS_EXTRA_CLANG_OPTIONS);

void CppCodeModelSettings::fromSettings(QSettings *s)
{
    s->beginGroup(QLatin1String(Constants::CPPTOOLS_SETTINGSGROUP));
    QVariant supporters = s->value(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_SUPPORTERS_KEY));

    foreach (const QString &mimeType, supportedMimeTypes())
        setIdForMimeType(supporters, mimeType);

    setExtraClangOptions(s->value(clangExtraOptionsKey, defaultExtraClangOptions()).toStringList());

    QVariant v = s->value(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), PchUse_None);
    setPCHUsage(static_cast<PCHUsage>(v.toInt()));
    s->endGroup();

    emit changed();
}

void CppCodeModelSettings::toSettings(QSettings *s)
{
    s->beginGroup(QLatin1String(Constants::CPPTOOLS_SETTINGSGROUP));
    QHash<QString, QVariant> var;
    foreach (const QString &mimeType, m_modelManagerSupportByMimeType.keys())
        var[mimeType] = m_modelManagerSupportByMimeType[mimeType];
    s->setValue(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_SUPPORTERS_KEY), QVariant(var));
    s->setValue(clangExtraOptionsKey, extraClangOptions());
    s->setValue(QLatin1String(Constants::CPPTOOLS_MODEL_MANAGER_PCH_USAGE), pchUsage());
    s->endGroup();

    emit changed();
}

QStringList CppCodeModelSettings::supportedMimeTypes()
{
    return QStringList({
        QLatin1String(Constants::C_SOURCE_MIMETYPE),
        QLatin1String(Constants::CPP_SOURCE_MIMETYPE),
        QLatin1String(Constants::OBJECTIVE_C_SOURCE_MIMETYPE),
        QLatin1String(Constants::OBJECTIVE_CPP_SOURCE_MIMETYPE),
        QLatin1String(Constants::CPP_HEADER_MIMETYPE)
    });
}

void CppCodeModelSettings::emitChanged()
{
    emit changed();
}

void CppCodeModelSettings::setModelManagerSupportProviders(
        const QList<ModelManagerSupportProvider *> &providers)
{
    m_modelManagerSupportsByName.clear();
    foreach (ModelManagerSupportProvider *provider, providers)
        m_modelManagerSupportsByName[provider->displayName()] = provider->id();
}

QString CppCodeModelSettings::modelManagerSupportIdForMimeType(const QString &mimeType) const
{
    if (mimeType == cHeaderMimeType)
        return m_modelManagerSupportByMimeType.value(cppHeaderMimeType);
    else
        return m_modelManagerSupportByMimeType.value(mimeType);
}

void CppCodeModelSettings::setModelManagerSupportIdForMimeType(const QString &mimeType,
                                                               const QString &id)
{
    QString theMimeType = mimeType;
    if (theMimeType == cHeaderMimeType)
        theMimeType = cppHeaderMimeType;

    m_modelManagerSupportByMimeType.insert(theMimeType, id);
}

bool CppCodeModelSettings::hasModelManagerSupportIdForMimeType(const QString &mimeType,
                                                               const QString &id) const
{
    if (mimeType == cHeaderMimeType)
        return m_modelManagerSupportByMimeType.value(cppHeaderMimeType) == id;
    else
        return m_modelManagerSupportByMimeType.value(mimeType) == id;
}

QStringList CppCodeModelSettings::defaultExtraClangOptions()
{
    return {
        QStringLiteral("-Weverything"),
        QStringLiteral("-Wno-c++98-compat"),
        QStringLiteral("-Wno-c++98-compat-pedantic"),
        QStringLiteral("-Wno-unused-macros"),
        QStringLiteral("-Wno-newline-eof"),
        QStringLiteral("-Wno-exit-time-destructors"),
        QStringLiteral("-Wno-global-constructors"),
        QStringLiteral("-Wno-gnu-zero-variadic-macro-arguments"),
        QStringLiteral("-Wno-documentation"),
        QStringLiteral("-Wno-shadow"),
        QStringLiteral("-Wno-missing-prototypes"), // Not optimal for C projects.
    };
}

QStringList CppCodeModelSettings::extraClangOptions() const
{
    return m_extraClangOptions;
}

void CppCodeModelSettings::setExtraClangOptions(const QStringList &extraClangOptions)
{
    m_extraClangOptions = extraClangOptions;
}

void CppCodeModelSettings::setIdForMimeType(const QVariant &var, const QString &mimeType)
{
    QHash<QString, QVariant> mimeToId = var.toHash();
    m_modelManagerSupportByMimeType[mimeType] = mimeToId.value(mimeType, defaultId()).toString();
}