#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include "asyncdbconnection.h"
#include "connectionconfig.h"
#include "tsqueue.h"
#include <QLabel>
#include <QMainWindow>
#include <QSocketNotifier>
#include <memory>
#include <future>
#include "PgsqlConn.h"
#include <chrono>
#include <deque>
#include <mutex>

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

namespace Ui {
	class MainWindow;
}

namespace Pgsql {
	class Connection;
}


class MainWindow : public QMainWindow
{
	Q_OBJECT
public:
	explicit MainWindow(QWidget *parent = 0);
	~MainWindow();

	void setConfig(const ConnectionConfig &config);
	/* Meant to be called from other threads to pass a code block
	 * that has to be executed in the context of the thread of the window.
	 */
	void QueueTask(TSQueue::t_Callable c);

private:
	TSQueue m_taskQueue;
	QLabel *m_timeElapsedLabel;
	std::unique_ptr<QTimer> m_timer;
	std::chrono::time_point<std::chrono::steady_clock> m_startTime;
	ConnectionConfig m_config;


	void startTimer();
	void endTimer();
	std::chrono::duration<float, std::milli> elapsedTime;


	Ui::MainWindow *ui;
	std::unique_ptr<SqlHighlighter> highlighter;

	ASyncDBConnection m_dbConnection;

	void connectionStateChanged(ASyncDBConnection::State state);

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

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

	void startConnect();

	void performQuery();
	void performExplain();

	void cancel_query();
	void receiveNotice(Pgsql::ErrorDetails notice);

	void processCallableQueue();

	void addLog(QString s);
	void updateTimer();
	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_actionExecute_SQL_triggered();
	void on_actionExplain_Analyze_triggered();
	void on_actionCancel_triggered();
};

#endif // MAINWINDOW_H