/*
    SPDX-FileCopyrightText: 2019-2022 Laurent Montel <montel@kde.org>

    SPDX-License-Identifier: LGPL-2.0-or-later

*/

#include "kdebugsettingsloadingcategories.h"
#include "kdebugsettings_debug.h"
#include "kdebugsettingsutil.h"
#include "loadcategoriesjob.h"
#include <QDir>
#include <QLibraryInfo>
#include <QStandardPaths>

KDebugSettingsLoadingCategories::KDebugSettingsLoadingCategories() = default;

KDebugSettingsLoadingCategories::~KDebugSettingsLoadingCategories() = default;

void KDebugSettingsLoadingCategories::readQtLoggingFile()
{
    mCategoriesList.clear();
    const QString envPath = QStandardPaths::locate(QStandardPaths::GenericConfigLocation, QStringLiteral("QtProject/qtlogging.ini"));
    if (!envPath.isEmpty()) {
        readCategoriesFiles(envPath);
    } else {
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
        const QString dataPath = QDir(QLibraryInfo::path(QLibraryInfo::DataPath)).absoluteFilePath(QStringLiteral("qtlogging.ini"));
#else
        const QString dataPath = QDir(QLibraryInfo::location(QLibraryInfo::DataPath)).absoluteFilePath(QStringLiteral("qtlogging.ini"));
#endif
        readCategoriesFiles(dataPath);
    }
}

void KDebugSettingsLoadingCategories::readCategoriesFiles(const QString &path)
{
    // KDE debug categories area
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    const QString confAreasFile = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("qlogging-categories6/kde.categories"));
#else
    const QString confAreasFile = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("qlogging-categories5/kde.categories"));
#endif
    if (!confAreasFile.isEmpty()) {
        KDebugSettingsUtil::readLoggingCategories(confAreasFile, mCategoriesList, false);
    }

    mRenameCategoriesList.clear();
    // Load *.renamecategories file in QStandardPaths::ConfigLocation for kde apps.
#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
    const QStringList dirs = QStandardPaths::locateAll(QStandardPaths::ConfigLocation, QString(), QStandardPaths::LocateDirectory)
        + QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("qlogging-categories6/"), QStandardPaths::LocateDirectory);
#else
    const QStringList dirs = QStandardPaths::locateAll(QStandardPaths::ConfigLocation, QString(), QStandardPaths::LocateDirectory)
        + QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("qlogging-categories5/"), QStandardPaths::LocateDirectory);
#endif
    for (const QString &dir : dirs) {
        const QStringList fileNames = QDir(dir).entryList(QStringList() << QStringLiteral("*.renamecategories"));
        for (const QString &file : fileNames) {
            mRenameCategoriesList.append(KDebugSettingsUtil::readRenameCategories(dir + file));
        }
    }
    // TODO add load rename file from external kde apps.
    const QStringList dirs2 =
        QStandardPaths::locateAll(QStandardPaths::GenericConfigLocation, QStringLiteral("qdebug.categories/"), QStandardPaths::LocateDirectory);
    // qDebug() << " dirs 2 " << dirs2;
    for (const QString &dir : dirs2) {
        const QStringList fileNames = QDir(dir).entryList(QStringList() << QStringLiteral("*.renamecategories"));
        for (const QString &file : fileNames) {
            mRenameCategoriesList.append(KDebugSettingsUtil::readRenameCategories(dir + file));
        }
    }

    // Load *.categories file in QStandardPaths::ConfigLocation for kde apps.
    for (const QString &dir : dirs) {
        const QStringList fileNames = QDir(dir).entryList(QStringList() << QStringLiteral("*.categories"));
        for (const QString &file : fileNames) {
            if (file != QLatin1String("kde.categories")) {
                KDebugSettingsUtil::readLoggingCategories(dir + file, mCategoriesList, true);
            }
        }
    }

    // Load *.categories files. in qdebug.categories for external kde apps.
    for (const QString &dir : dirs2) {
        const QStringList fileNames = QDir(dir).entryList(QStringList() << QStringLiteral("*.categories"));
        for (const QString &file : fileNames) {
            KDebugSettingsUtil::readLoggingCategories(dir + QLatin1Char('/') + file, mCategoriesList, true);
        }
    }

    const QByteArray rulesFilePath = qgetenv("QT_LOGGING_CONF");
    if (!rulesFilePath.isEmpty()) {
        // const QList<KDebugSettingsUtil::LoadLoggingCategory> envCategories = KDebugSettingsUtil::readLoggingQtCategories(QString::fromLatin1(rulesFilePath));
        // TODO
    }

    mEnvironmentrules = QString::fromLatin1(qgetenv("QT_LOGGING_RULES"));
    // qt logging.ini
    LoadCategoriesJob job;
    job.setFileName(path);
    job.setCategories(mCategoriesList);
    job.setRenamedCategories(mRenameCategoriesList);
    job.start();

    mCustomCategories = job.customCategories();
    mQtKdeCategories = job.qtKdeCategories();
    mFoundOverrideRule = job.foundOverrideRule();
}

bool KDebugSettingsLoadingCategories::foundOverrideRule() const
{
    return mFoundOverrideRule;
}

LoggingCategory::List KDebugSettingsLoadingCategories::qtKdeCategories() const
{
    return mQtKdeCategories;
}

LoggingCategory::List KDebugSettingsLoadingCategories::customCategories() const
{
    return mCustomCategories;
}

KdeLoggingCategory::List KDebugSettingsLoadingCategories::categoriesList() const
{
    return mCategoriesList;
}

RenameCategory::List KDebugSettingsLoadingCategories::renameCategoriesList() const
{
    return mRenameCategoriesList;
}

QString KDebugSettingsLoadingCategories::environmentrules() const
{
    return mEnvironmentrules;
}
