#include "MySQLWrapper.h"

class Transaction
{
public:
    /// Start Transaction on construct.
    Transaction(MySQLConn& MySQLConnection);

    /// Rollback transaction on destruct. If commit() or rollback() is called, this function will not execute any sql.
    ~Transaction();

    /// NOTE: A Transaction can only call commit() or rollback() once, until it calls start commit again.
    /// Commit transaction. Equals to SQL: COMMIT
    /// ReturnValue: -1 SQL Error. -2 Operated >=0 Affected Rows
    int commit();
    /// Rollback transaction. Equals to SQL: ROLLBACK
    /// ReturnValue: -1 SQL Error. -2 Operated >=0 Affected Rows
    int rollback();

    /// Check if a Transaction object is ready. If it is ready, then a transaction has started.
    bool isReady() const;
private:
    MySQLConn& conn;
    bool _isReady;
    bool _operated;
};