#ifndef PGSQLDATABASECATALOGUE_H
#define PGSQLDATABASECATALOGUE_H

#include <libpq-fe.h>
#include <QString>
#include <vector>

namespace Pgsql {

	class Connection;

}

class PgTypeContainer;
class PgDatabaseContainer;
class PgAuthIdContainer;

class PgDatabaseCatalogue {
public:
	PgDatabaseCatalogue();
	PgDatabaseCatalogue(const PgDatabaseCatalogue&) = delete;
	PgDatabaseCatalogue& operator = (const PgDatabaseCatalogue&) = delete;

	~PgDatabaseCatalogue();


	void loadAll(Pgsql::Connection &conn);
	void loadInfo(Pgsql::Connection &conn);
	void loadTypes(Pgsql::Connection &conn);
	void loadDatabases(Pgsql::Connection &conn);
	void loadAuthIds(Pgsql::Connection &conn);

	const QString& serverVersionString() const;
	int serverVersion() const;

	const PgTypeContainer* types() const;
	const PgDatabaseContainer *databases() const;
	const PgAuthIdContainer *authIds() const;
private:
	QString m_serverVersionString;
	int m_serverVersion;
	PgTypeContainer *m_types = nullptr;
	PgDatabaseContainer *m_databases = nullptr;
	PgAuthIdContainer *m_authIds = nullptr;
};

QString getRoleNameFromOid(const PgDatabaseCatalogue *cat, Oid oid);
QString getRoleDisplayString(const PgDatabaseCatalogue *cat, Oid oid);


#endif // PGSQLDATABASECATALOGUE_H