#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QAudioOutput>
#include <QMainWindow>

#include <memory>
#include "audiobuffer.h"
#include "timer.h"
#include "ui_mainwindow.h"
#include "functionthread.h"

#include "../../Analyser/Static/StaticAnalyser.hpp"
#include "../../Machines/Utility/MachineForTarget.hpp"

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow, public Outputs::Speaker::Speaker::Delegate {
		Q_OBJECT

		void createActions();

	public:
		MainWindow(QWidget *parent = nullptr);
		~MainWindow();
		explicit MainWindow(const QString &fileName);

	protected:
		bool eventFilter(QObject *obj, QEvent *event) override;

	private:
		std::unique_ptr<Ui::MainWindow> ui;
		std::unique_ptr<Timer> timer;

		// Initial setup stuff.
		Analyser::Static::TargetList targets;
		enum class UIPhase {
			NoFileSelected, RequestingROMs, RunningMachine
		} uiPhase = UIPhase::NoFileSelected;
		void launchMachine();

		QString romRequestBaseText;
		std::vector<ROMMachine::ROM> missingRoms;

		// File drag and drop is supported.
		void dragEnterEvent(QDragEnterEvent* event) override;
		void dropEvent(QDropEvent* event) override;

		// Ongoing state.
		std::unique_ptr<Machine::DynamicMachine> machine;
		std::mutex machineMutex;

		std::unique_ptr<QAudioOutput> audioOutput;
		bool audioIs8bit = false, audioIsStereo = false;
		void speaker_did_complete_samples(Outputs::Speaker::Speaker *speaker, const std::vector<int16_t> &buffer) override;
		AudioBuffer audioBuffer;
		FunctionThread audioThread;

		bool processEvent(QKeyEvent *);

		enum class WidgetSet {
			MachinePicker,
			ROMRequester,
			RunningMachine,
		};
		void setVisibleWidgetSet(WidgetSet);

	private slots:
		void startMachine();

	private:
		void start_appleII();
		void start_amstradCPC();
		void start_atariST();
		void start_electron();
		void start_macintosh();
		void start_msx();
		void start_oric();
		void start_vic20();
		void start_zx80();
		void start_zx81();

		QAction *insertAction = nullptr;
		void insertFile(const QString &fileName);

		void launchFile(const QString &fileName);
		void launchTarget(std::unique_ptr<Analyser::Static::Target> &&);

		void restoreSelections();
		void storeSelections();

		void init();
		void tile(const QMainWindow *previous);
		QString getFilename(const char *title);

		void closeEvent(QCloseEvent *event) override;
		static inline int mainWindowCount = 0;

		void deleteMachine();

		QMenu *displayMenu = nullptr;
		void addDisplayMenu(const std::string &machinePrefix, const std::string &compositeColour, const std::string &compositeMono, const std::string &svideo, const std::string &rgb);
};

#endif // MAINWINDOW_H