def refill(card,amount): cost,(begin,end) = available_refill(*card.contract()) if purse.change_value(card,amount) < cost: return 0 purse.change_value(card,-cost) events = [] static_sector,static_data = read_static(card) dyn_sector,dyn_proxy,dyn_data = read_dynamic(card) if not static_data.active(): sell_event = EVENT_CONTRACT(card, Value = cost) sell_event.LocalTransactions = dyn_data.update() events.append(sell_event) static_data.refill(begin,end) term_pack = ((end.year - 2000) << 8) + end.month refill_event = EVENT_CONTRACT_ADD2(card,TransactionValue=term_pack,Amount=cost) refill_event.LocalTransactions = dyn_data.update() events.append(refill_event) try: dyn_proxy.commit(dyn_data,low_endian = 1) dyn_sector.write() card.auth(static_sector) static_sector.data.crc16_calc(low_endian = 1) static_sector.write() except Exception as e: [event.set_error_code(e) for event in events]; raise finally: [event.save(card) for event in events] return cost
