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// SPDX-License-Identifier: GPL-3.0-only
// SPDX-FileCopyrightText: 2026 Project Tick
// SPDX-FileContributor: Project Tick Team
/*
 *  ProjT Launcher - Minecraft Launcher
 *  Copyright (C) 2026 Project Tick
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, version 3.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, write to the Free Software Foundation,
 *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * === Upstream License Block (Do Not Modify) ==============================
 *
 *
 *
 *  Prism Launcher - Minecraft Launcher
 *  Copyright (C) 2024 Tayou <git@tayou.org>
 *  Copyright (C) 2024 TheKodeToad <TheKodeToad@proton.me>
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, version 3.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, write to the Free Software Foundation,
 *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * ======================================================================== */
#pragma once

#include <QDir>
#include <QLoggingCategory>
#include <QString>
#include <memory>

#include "IconTheme.h"
#include "ui/themes/CatPack.h"
#include "ui/themes/Theme.h"

inline auto themeDebugLog() {
    return qDebug() << "[Theme]";
}
inline auto themeWarningLog() {
    return qWarning() << "[Theme]";
}

class ThemeManager {
   public:
    ThemeManager();
    ~ThemeManager();

    QList<IconTheme*> getValidIconThemes();
    QList<Theme*> getValidApplicationThemes();
    bool isValidIconTheme(const QString& id);
    bool isValidApplicationTheme(const QString& id);
    QDir getIconThemesFolder();
    QDir getApplicationThemesFolder();
    QDir getCatPacksFolder();
    void applyCurrentlySelectedTheme(bool initial = false);
    void setIconTheme(const QString& name);
    void setApplicationTheme(const QString& name, bool initial = false);

    /// @brief Returns the background based on selected and with events (Birthday, XMas, etc.)
    /// @param catName Optional, if you need a specific background.
    /// @return
    QString getCatPack(QString catName = "");
    QList<CatPack*> getValidCatPacks();

    const LogColors& getLogColors() { return m_logColors; }

    void refresh();

   private:
    std::map<QString, std::unique_ptr<Theme>> m_themes;
    std::map<QString, IconTheme> m_icons;
    QDir m_iconThemeFolder{"iconthemes"};
    QDir m_applicationThemeFolder{"themes"};
    QDir m_catPacksFolder{"catpacks"};
    std::map<QString, std::unique_ptr<CatPack>> m_catPacks;
    QPalette m_defaultPalette;
    QString m_defaultStyle;
    LogColors m_logColors;

    void initializeThemes();
    void initializeCatPacks();
    QString addTheme(std::unique_ptr<Theme> theme);
    Theme* getTheme(QString themeId);
    QString addIconTheme(IconTheme theme);
    QString addCatPack(std::unique_ptr<CatPack> catPack);
    void initializeIcons();
    void initializeWidgets();

    // On non-Mac systems, this is a no-op.
    void setTitlebarColorOnMac(WId windowId, QColor color);
    // This also will set the titlebar color of newly opened windows after this method is called.
    // On non-Mac systems, this is a no-op.
    void setTitlebarColorOfAllWindowsOnMac(QColor color);
    // On non-Mac systems, this is a no-op.
    void stopSettingNewWindowColorsOnMac();
#ifdef Q_OS_MACOS
    NSObject* m_windowTitlebarObserver = nullptr;
#endif

    const QStringList builtinIcons{"pe_colored", "pe_light", "pe_dark", "pe_blue",    "breeze_light", "breeze_dark",
                                   "OSX",        "iOS",      "flat",    "flat_white", "multimc"};
};