#ifndef QUERYTAB_H
#define QUERYTAB_H

#include "asyncdbconnection.h"
#include "QueryResultModel.h"
#include "QueryExplainModel.h"

#include <QWidget>
#include <memory>

namespace Ui {
class QueryTab;
}

class MainWindow;
class SqlHighlighter;
class ExplainRoot;
class QueryResultModel;
class QueryExplainModel;


class QueryTab : public QWidget
{
	Q_OBJECT

public:
	QueryTab(MainWindow *win, QWidget *parent = 0);
	~QueryTab();

	void setConfig(const ConnectionConfig &config);

	void open();
	void save();
	void saveAs();
	void saveCopyAs();

	void execute();
	void explainAnalyze();
	void cancel();
private:
	Ui::QueryTab *ui;
	MainWindow *m_win;
	std::unique_ptr<SqlHighlighter> highlighter;
	ConnectionConfig m_config;

	QString m_fileName; ///< use setFileName function to set
	bool m_queryTextChanged = false;

	void setFileName(const QString &filename);
	bool continueWithoutSavingWarning();
	void saveSqlTo(const QString &filename);
	QString promptUserForSaveSqlFilename();


	ASyncDBConnection m_dbConnection;
	std::unique_ptr<QueryResultModel> resultModel;
	std::unique_ptr<QueryExplainModel> explainModel;

	void addLog(QString s);

	std::string getCommand() const;
	void explain_ready(ExplainRoot::SPtr explain);
	void query_ready(std::shared_ptr<Pgsql::Result> dbres);
private slots:

	void queryTextChanged();
	void connectionStateChanged(ASyncDBConnection::State state);
	void receiveNotice(Pgsql::ErrorDetails notice);

	void startConnect();
};

#endif // QUERYTAB_H