#ifndef SEARCHWORKER_H
#define SEARCHWORKER_H
#include <QObject>
#include <QSqlDatabase>
#include <QSqlQuery>
#include <QString>
#include <QVector>
#include "../shared/searchresult.h"

class SearchWorker : public QObject
{
	class Command
	{
	  public:
		QString key;
		QString value;

		Command(QString key = "", QString value = "")
		{
			this->key = key;
			this->value = value;
		}
	};

	Q_OBJECT
  private:
	QVector<Command> tokenize(QString expression);
	QString createSql(const Command &cmd);
	QString makeSql(const QVector<Command> &tokens);
	QSqlDatabase db;

  public:
	SearchWorker();
	SearchWorker(const QString &dbpath);
	bool checkParanthesis(QString expression);
  public slots:
	void search(const QString &query);
  signals:
	void searchResultsReady(const QVector<SearchResult> &results);
	void searchCancelled();
	void searchError(QString e);
};

#endif // SEARCHWORKER_H