// src/MainWindow.h
#pragma once
#include <QMainWindow>
#include <QDockWidget>
#include <QListWidget>
#include <QStackedWidget>
#include <QTabWidget>
#include <QTimer>
#include <QThread>
#include "AudioEngine.h"
#include "PlayerControls.h"
#include "CommonWidgets.h"
#include "Utils.h"

class MainWindow : public QMainWindow {
    Q_OBJECT
public:
    MainWindow(QWidget* parent = nullptr);
    ~MainWindow();
    void loadPath(const QString& path, bool recursive);
protected:
    void closeEvent(QCloseEvent* event) override;
private slots:
    void onOpenFile();
    void onOpenFolder();
    void onPermissionsResult(bool granted);
    void onTrackFinished();
    void onTrackLoaded(bool success);
    void onTrackDoubleClicked(QListWidgetItem* item);
    void onAnalysisReady(float bpm, float confidence);
    void updateSmoothing(); 
    void play();
    void pause();
    void nextTrack();
    void prevTrack();
    void seek(float pos);
    void onDspChanged(int fft, int hop);
    void onBinsChanged(int n);
    void onToggleFullScreen();
    void saveSettings();
    void onMetadataLoaded(int index, const Utils::Metadata& meta);
    
    // Visualizer Pull
    void onSpectrumAvailable();
    
    // Update Analyzer with new track data
    void onTrackDataChanged(std::shared_ptr<TrackData> data);

private:
    void initUi();
    void loadIndex(int index);
    void loadSettings();

    QStackedWidget* m_stack;
    WelcomeWidget* m_welcome;
    PlayerPage* m_playerPage;
    QDockWidget* m_dock;
    QTabWidget* m_mobileTabs;
    QListWidget* m_playlist;
    
    // Audio System
    AudioEngine* m_engine;
    QThread* m_audioThread;
    
    // Analysis System
    AudioAnalyzer* m_analyzer;
    QThread* m_analyzerThread;

    struct TrackInfo {
        QString path;
        Utils::Metadata meta;
    };
    QVector<TrackInfo> m_tracks;
    int m_currentIndex = -1;
    enum class PendingAction { None, File, Folder };
    PendingAction m_pendingAction = PendingAction::None;
    QString m_settingsDir;
    
    float m_lastBpm = 0.0f; 
    
    Utils::MetadataLoader* m_metaLoader = nullptr;
    QThread* m_metaThread = nullptr;

    bool m_visualizerUpdatePending = false;
};