#ifndef EXPORTMANAGER_H
#define EXPORTMANAGER_H

#include <QObject>
#include <QImage>
#include <QVariantMap>
#include <QStringList>

class QWidget;
class QTreeWidgetItem;
struct BatchExportItem;

/**
 * @brief The ExportManager class handles all export operations for tree items.
 *
 * This singleton provides centralized export functionality with format-specific
 * options for images, audio, text, and raw binary data.
 */
class ExportManager : public QObject {
    Q_OBJECT

public:
    enum ContentType {
        Unknown,
        Image,
        Audio,
        Video,
        Text,
        Binary
    };

    static ExportManager& instance();

    // Content type detection
    ContentType detectContentType(const QVariantMap& vars) const;
    ContentType detectContentType(const QByteArray& data, const QString& filename) const;

    // Dialog-based export (shows full options dialog)
    bool exportWithDialog(const QByteArray& data, const QString& name,
                          ContentType type, QWidget* parent);
    bool exportImageWithDialog(const QImage& image, const QString& name, QWidget* parent);

    // Quick export (uses saved defaults, minimal UI - just file picker)
    bool quickExport(const QByteArray& data, const QString& name,
                     ContentType type, QWidget* parent);
    bool quickExportImage(const QImage& image, const QString& name, QWidget* parent);

    // Batch export (shows batch dialog for multiple items)
    bool batchExport(const QList<BatchExportItem>& items, QWidget* parent);

    // Legacy export methods (direct export with file dialog)
    bool exportRawData(const QByteArray& data, const QString& suggestedName, QWidget* parent);
    bool exportImage(const QImage& image, const QString& format, const QString& suggestedName, QWidget* parent);
    bool exportAudio(const QByteArray& wavData, const QString& format, const QString& suggestedName, QWidget* parent);
    bool exportText(const QByteArray& data, const QString& suggestedName, QWidget* parent);

    // Format support
    QStringList supportedImageFormats() const;
    QStringList supportedAudioFormats() const;
    bool hasFFmpeg() const;

    // Clipboard operations
    void copyImageToClipboard(const QImage& image);
    void copyTextToClipboard(const QString& text);
    void copyBinaryAsHex(const QByteArray& data);

    // Last directory tracking
    QString lastExportDir(const QString& category) const;
    void setLastExportDir(const QString& category, const QString& dir);

signals:
    void exportCompleted(const QString& path, bool success);
    void exportError(const QString& error);

    // Batch export signals
    void batchExportProgress(int current, int total, const QString& currentItem);
    void batchExportCompleted(int succeeded, int failed, int skipped);

private:
    explicit ExportManager(QObject* parent = nullptr);
    ~ExportManager() = default;

    // Disable copy
    ExportManager(const ExportManager&) = delete;
    ExportManager& operator=(const ExportManager&) = delete;

    // Image format helpers
    bool saveTGA(const QImage& image, const QString& path);
    QString getFilterForFormat(const QString& format) const;

    // Audio conversion
    bool convertWithFFmpeg(const QString& inputPath, const QString& outputPath, const QString& format);
    QString findFFmpegPath() const;

    // State
    QMap<QString, QString> m_lastDirs;
    mutable QString m_cachedFFmpegPath;
    mutable bool m_ffmpegChecked = false;
};

#endif // EXPORTMANAGER_H