#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QTime>

class QLineEdit;
class QPushButton;
class VisualizationWiew;

/// State of the simulation
enum class State
{
	stopped,
	simulating,
	paused
};

/// Main window of the simulation. Contains the visualization area and the simulation parameters
class MainWindow : public QMainWindow
{
	Q_OBJECT
	Q_DISABLE_COPY(MainWindow)

  protected:
	/// Paints itself choosing pixels according to the temperature of the surface
	VisualizationWiew* visualizationWiew = nullptr;
	/// Allows user to input the epsilon
	QLineEdit* epsilonControl = nullptr;
	/// Refresh rate chosen by user
	QLineEdit* refreshRateControl = nullptr;
	/// Starts or pauses the simulation
	QPushButton* startPauseButton = nullptr;
	/// Stops the simulation
	QPushButton* stopButton = nullptr;
	/// State of the simulation
	State state = State::stopped;
	/// Measure the duration of the simulation
	QTime time;

  public:
	/// Constructor
	explicit MainWindow(QWidget* parent = nullptr);
	/// Loads a csv file
	bool loadCsv(const QString& filePath);

  public slots:
	/// Called when user presses the start/pause button
	void startPauseSimulation();
	/// Called when user presses the stop button
	void stopSimulation();
	/// Called when the simulation finishes
	void simulationDone(unsigned long long generations);
	/// Called each time a refresh is done
	void refreshProgress();

  protected:
	/// Constructs the GUI
	void buildInterface();
	/// Accept only dragging of files
	virtual void dragEnterEvent(QDragEnterEvent* event) override;
	/// Open files when dropped from file explorer
	virtual void dropEvent(QDropEvent* event) override;
	/// Starts or resumes a simulation. It uses the given epsilon
	void startResumeSimulation();
	/// Pauses the simulation
	void pauseSimulation();
};

#endif // MAINWINDOW_H