#ifndef SETTINGS_H
#define SETTINGS_H

#include <QObject>
#include <QSettings>
#include <QString>
#include <QFont>
#include <QColor>

// Theme definition
struct Theme {
    QString name;
    QString accentColor;
    QString accentColorDark;
    QString accentColorLight;
    QString backgroundColor;
    QString panelColor;
    QString borderColor;
    QString textColor;
    QString textColorMuted;
};

class Settings : public QObject
{
    Q_OBJECT

public:
    static Settings& instance();

    // Theme
    QString currentTheme() const;
    void setCurrentTheme(const QString& themeName);
    Theme theme() const;
    QStringList availableThemes() const;
    static Theme getTheme(const QString& name);

    // General
    QString exportDirectory() const;
    void setExportDirectory(const QString& path);

    bool autoExportOnParse() const;
    void setAutoExportOnParse(bool enable);

    // Tools
    QString quickBmsPath() const;
    void setQuickBmsPath(const QString& path);
    static QString findQuickBms();  // Auto-detect QuickBMS

    QString pythonPath() const;
    void setPythonPath(const QString& path);
    static QString findPython();  // Auto-detect Python

    QString ffmpegPath() const;
    void setFFmpegPath(const QString& path);
    static QString findFFmpeg();  // Auto-detect FFmpeg

    QString scriptsDirectory() const;
    void setScriptsDirectory(const QString& path);

    // Debug/Logging
    bool debugLoggingEnabled() const;
    void setDebugLoggingEnabled(bool enable);

    bool verboseParsingEnabled() const;
    void setVerboseParsingEnabled(bool enable);

    bool logToFileEnabled() const;
    void setLogToFileEnabled(bool enable);

    // View
    QString fontFamily() const;
    void setFontFamily(const QString& family);

    int fontSize() const;
    void setFontSize(int size);

    int viewZoom() const;
    void setViewZoom(int zoom);

    // Tree Widget
    bool showItemCounts() const;
    void setShowItemCounts(bool show);

    bool collapseByDefault() const;
    void setCollapseByDefault(bool collapse);

    bool groupByExtension() const;
    void setGroupByExtension(bool group);

    bool naturalSorting() const;
    void setNaturalSorting(bool enable);

    // Hex Viewer
    int hexBytesPerLine() const;
    void setHexBytesPerLine(int bytes);

    bool hexShowAscii() const;
    void setHexShowAscii(bool show);

    // Audio Preview
    bool audioAutoPlay() const;
    void setAudioAutoPlay(bool enable);

    // Image Preview
    bool imageShowGrid() const;
    void setImageShowGrid(bool show);

    bool imageAutoZoom() const;
    void setImageAutoZoom(bool enable);

    // File Type Associations
    // Returns the viewer type for a given extension: "hex", "text", "image", "audio", "list"
    QString viewerForExtension(const QString& extension) const;
    void setViewerForExtension(const QString& extension, const QString& viewer);
    QStringList textFileExtensions() const;
    void setTextFileExtensions(const QStringList& extensions);
    QStringList imageFileExtensions() const;
    void setImageFileExtensions(const QStringList& extensions);
    QStringList audioFileExtensions() const;
    void setAudioFileExtensions(const QStringList& extensions);
    QStringList listFileExtensions() const;
    void setListFileExtensions(const QStringList& extensions);

    // Export Settings
    QString defaultImageExportFormat() const;
    void setDefaultImageExportFormat(const QString& format);

    QString defaultAudioExportFormat() const;
    void setDefaultAudioExportFormat(const QString& format);

    int imageJpegQuality() const;        // 1-100, default 90
    void setImageJpegQuality(int quality);

    int imagePngCompression() const;     // 0-9, default 6
    void setImagePngCompression(int level);

    int audioMp3Bitrate() const;         // 128, 192, 256, 320 kbps
    void setAudioMp3Bitrate(int bitrate);

    int audioOggQuality() const;         // -1 to 10, default 5
    void setAudioOggQuality(int quality);

    int audioFlacCompression() const;    // 0-8, default 5
    void setAudioFlacCompression(int level);

    bool exportRememberSettings() const;
    void setExportRememberSettings(bool remember);

    QString batchExportDirectory() const;
    void setBatchExportDirectory(const QString& path);

    bool batchExportPreserveStructure() const;
    void setBatchExportPreserveStructure(bool preserve);

    QString batchExportConflictResolution() const;  // "number", "overwrite", "skip"
    void setBatchExportConflictResolution(const QString& resolution);

    // Window State
    QByteArray windowGeometry() const;
    void setWindowGeometry(const QByteArray& geometry);

    QByteArray windowState() const;
    void setWindowState(const QByteArray& state);

    // Recent Files
    QStringList recentFiles() const;
    void addRecentFile(const QString& path);
    void clearRecentFiles();

    // Sync to disk
    void sync();

    // Reset all settings to defaults
    void resetToDefaults();

signals:
    void debugLoggingChanged(bool enabled);
    void themeChanged(const Theme& theme);
    void settingsChanged();

private:
    explicit Settings(QObject *parent = nullptr);
    ~Settings() = default;
    Settings(const Settings&) = delete;
    Settings& operator=(const Settings&) = delete;

    QSettings m_settings;
};

#endif // SETTINGS_H