#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include "ASyncDBConnection.h"
#include "ConnectionConfig.h"
#include "OpenDatabase.h"
#include <QLabel>
#include "ASyncWindow.h"
#include <QLabel>
#include <QRunnable>
#include <QSocketNotifier>
#include <memory>
#include <future>
#include "Pgsql_Connection.h"
#include "QueuedBackgroundTask.h"
#include <chrono>
#include <deque>
#include <mutex>

#include <QMutex>
#include <QWaitCondition>

namespace Ui {
	class MainWindow;
}

namespace Pgsql {
	class Connection;
}

class QueryTab;
class MasterController;
class QCloseEvent;
class OpenDatabase;
class PgClass;
class PlgPage;

class MainWindow : public ASyncWindow {
	Q_OBJECT
public:
	explicit MainWindow(MasterController *master, QWidget *parent);
	~MainWindow();

	void setConfig(const ConnectionConfig &config);

	std::shared_ptr<OpenDatabase> getDatabase() { return m_database; }

	void newCrudPage(const PgClass &table);
private:

	Ui::MainWindow *ui;

	ConnectionConfig m_config;
	std::shared_ptr<OpenDatabase> m_database;

	MasterController *m_masterController;
	PlgPage *m_previousPage = nullptr; ///< tracks which pages buttons were previously being displayed

	class QLoad : public QueuedBackgroundTask {
	public:
		explicit QLoad(ConnectionConfig config, CompletionFunction on_completion)
			: QueuedBackgroundTask(on_completion)
			, m_config(config)
		{}

		OpenDatabase::OpenDatabaseSPtr GetResult()
		{
			if (hasException()) rethrow();
			return result;
		}
	protected:

		OpenDatabase::OpenDatabaseSPtr result;
		virtual void doRun()
		{
			auto res = OpenDatabase::createOpenDatabase(m_config);
			result = res.get();
		}
	private:

		ConnectionConfig m_config;
	};

	std::shared_ptr<QLoad> loader;


	QueryTab *GetActiveQueryTab();

	void closeEvent(QCloseEvent *event);
	void showEvent(QShowEvent *event);
	QueryTab *newSqlPage();

	void catalogLoaded();

	/// Called when a newly created page is added to the QTabWidget
	void addPage(PlgPage* page, QString caption);
	/// Called when a page is completely removed from the QTabWidget
	void removePage(PlgPage *page);

	void addToolBarButtonsForPage(PlgPage *page);
	void removeToolBarButtonsForPage(PlgPage *page);
	//class PageData
private slots:

	void on_actionLoad_SQL_triggered();
	void on_actionSave_SQL_triggered();
	void on_actionExport_data_triggered();
	void on_actionClose_triggered();
	void on_actionAbout_triggered();
	void on_actionSave_SQL_as_triggered();
	void on_actionSave_copy_of_SQL_as_triggered();
	void on_actionNew_SQL_triggered();
	void on_tabWidget_tabCloseRequested(int index);
	void on_actionShow_connection_manager_triggered();
	void on_actionCopy_triggered();
	void on_actionCopy_as_C_string_triggered();
	void on_actionCopy_as_raw_Cpp_string_triggered();
	void on_tabWidget_currentChanged(int index);
};

#endif // MAINWINDOW_H