$Author: faust $
  */
 
-#include <ctime>
-#include <algorithm> // std::max
-
-#include "stg/common.h"
 #include "tariff_impl.h"
+
 #include "stg_timer.h"
+#include "stg/common.h"
+
+#include <ctime>
+#include <algorithm> // std::max
 
 //-----------------------------------------------------------------------------
 TARIFF_IMPL & TARIFF_IMPL::operator=(const TARIFF_DATA & td)
 return *this;
 }
 //-----------------------------------------------------------------------------
-TARIFF_IMPL & TARIFF_IMPL::operator=(const TARIFF_IMPL & t)
-{
-tariffData = t.tariffData;
-return *this;
-}
-//-----------------------------------------------------------------------------
 double TARIFF_IMPL::GetPriceWithTraffType(uint64_t up,
                                      uint64_t down,
                                      int dir,
     return tariffData.dirPrice[dir].priceDayA;
 }
 //-----------------------------------------------------------------------------
-std::string TARIFF_IMPL::TariffChangeIsAllowed(const TARIFF & to) const
+std::string TARIFF_IMPL::TariffChangeIsAllowed(const TARIFF & to, time_t currentTime) const
 {
 time_t timeout = GetChangePolicyTimeout();
-if (stgTime > timeout && timeout != 0)
+if (currentTime > timeout && timeout != 0)
     return "";
 switch (GetChangePolicy())
     {
     case TARIFF::DENY:
         return "Current tariff '" + GetName() + "', new tariff '" + to.GetName() + "'. The policy is '" + TARIFF::ChangePolicyToString(GetChangePolicy()) + "'.";
     }
+return "";
 }
 //-----------------------------------------------------------------------------