#ifndef AUDIOPREVIEWWIDGET_H
#define AUDIOPREVIEWWIDGET_H

#include <QWidget>
#include <QLabel>
#include <QPushButton>
#include <QSlider>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QMediaPlayer>
#include <QAudioOutput>
#include <QBuffer>
#include <QTreeWidget>
#include <QSplitter>
#include <QTimer>
#include <QColor>

#include "settings.h"

class AudioPreviewWidget : public QWidget
{
    Q_OBJECT

public:
    explicit AudioPreviewWidget(QWidget *parent = nullptr);
    ~AudioPreviewWidget();

    bool loadFromData(const QByteArray &data, const QString &filename);
    void setMetadata(const QVariantMap &metadata);

private slots:
    void onPlayPause();
    void onStop();
    void onPositionChanged(qint64 position);
    void onDurationChanged(qint64 duration);
    void onSliderMoved(int position);
    void onMediaStatusChanged(QMediaPlayer::MediaStatus status);
    void onUpdatePosition();
    void applyTheme(const Theme &theme);

private:
    void updateTimeLabel();
    void parseWavHeader(const QByteArray &data);
    void drawWaveform();
    void updateWaveformPosition();

protected:
    void showEvent(QShowEvent *event) override;
    void resizeEvent(QResizeEvent *event) override;

private:
    QMediaPlayer *mPlayer;
    QAudioOutput *mAudioOutput;
    QBuffer *mAudioBuffer;
    QByteArray mAudioData;
    QTimer *mPositionTimer;

    // UI elements
    QLabel *mFilenameLabel;
    QLabel *mWaveformLabel;
    QLabel *mTimeLabel;
    QPushButton *mPlayButton;
    QPushButton *mStopButton;
    QSlider *mPositionSlider;
    QSlider *mVolumeSlider;
    QTreeWidget *mMetadataTree;

    qint64 mDuration;
    QString mFilename;
    QPixmap mWaveformPixmap;  // Store base waveform for position overlay
    double mCalculatedDuration;  // Duration in seconds from WAV header

    // WAV info
    int mSampleRate;
    int mChannels;
    int mBitsPerSample;
    int mDataSize;
    int mAudioFormat;  // 1=PCM, 2=ADPCM, etc.
    bool mBigEndian;

    // Theme colors
    QColor mAccentColor;
    QColor mBgColor;
    QColor mPanelColor;
    QColor mTextColor;
    QColor mTextColorMuted;
    QColor mBorderColor;
};

#endif // AUDIOPREVIEWWIDGET_H