#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QCloseEvent>
#include <QDebug>
#include <QDesktopWidget>
#include <QDir>
#include <QDirIterator>
#include <QElapsedTimer>
#include <QFileDialog>
#include <QInputDialog>
#include <QMainWindow>
#include <QMessageBox>
#include <QRegExp>
#include <QTimer>

#include "ERWidget.h"

#include "AudioRecorder.h"
#include "CameraWidget.h"
#include "Synchronizer.h"

#include "GazeEstimationWidget.h"
#include "NetworkStream.h"

#include "Reference.h"

#include "LogWidget.h"
#include "PerformanceMonitorWidget.h"

#include "post-processing/PostProcessingWidget.h"

#include "CommandManager.h"

#include "utils.h"

class MainWindowConfig {
public:
    MainWindowConfig()
        : workingDirectory("./")
    {
    }

    void save(QSettings* settings)
    {
        settings->sync();
        settings->setValue("workingDirectory", workingDirectory);
    }

    void load(QSettings* settings)
    {
        settings->sync();
        set(settings, "workingDirectory", workingDirectory);
    }

    QString workingDirectory;
};

namespace Ui {
class MainWindow;
}

class MainWindow : public ERWidget {
    Q_OBJECT

public:
    explicit MainWindow(QWidget* parent = 0);
    ~MainWindow();

signals:
    void startRecording();
    void stopRecording();

private:
    Ui::MainWindow* ui;
    QSettings* settings;
    MainWindowConfig cfg;

    CameraWidget* lEyeWidget;
    CameraWidget* rEyeWidget;
    CameraWidget* fieldWidget;
    AudioRecorder* audioRecorder;
    Synchronizer* synchronizer;
    GazeEstimationWidget* gazeEstimationWidget;
    QThread* journalThread;
    DataRecorderThread* journal;
    NetworkStream* networkStream;
    LogWidget* logWidget;
    PerformanceMonitorWidget* performanceMonitorWidget;
    PostProcessingWidget* postProcessingWidget;
    CommandManager commandManager;

    QElapsedTimer elapsedTime;
    int elapsedTimeUpdateTimer;
    QString previousPwd;

    QSoundEffect recStartSound, recStopSound;

    bool setupSubjectDirectory();
    void setSubjectName(QString newSubjectName);
    void widgetButtonReact(QMainWindow* window, bool checked);
    void createExtraMenus();
    void setupWidget(ERWidget* widget, QSettings* settings, QPushButton* button = nullptr);

    const QString metaDataFile = "meta.tsv";
    const QString metaDateFormat = "yyyy-MM-dd HH:mm:ss.zzz";
    void storeMetaDataHead();
    void storeMetaDataTail();

protected:
    void closeEvent(QCloseEvent* event) Q_DECL_OVERRIDE;

private slots:
    void setWorkingDirectory(QString dir);
    void restorePreviousPwd();
    void on_changePwdButton_clicked();
    void on_changeSubjectButton_clicked();
    void on_recordingToggle_clicked();
    void timerEvent(QTimerEvent* event);
    void on_leftEyeCam_clicked();
    void on_rightEyeCam_clicked();
    void on_fieldCam_clicked();
    void on_gazeEstimation_clicked();

    void effectiveRecordingStart();

    void menuOption(QAction*);
    void showReferencesDialog();
    void showAboutDialog();
    void on_log_clicked();
    void on_performanceMonitor_clicked();

    void toggleRemoteRecording();
    void freezeCameraImages();
    void unfreezeCameraImages();
    void togglePreview();
    void on_postProcessing_clicked();
};

#endif // MAINWINDOW_H