package com.tourguide.modules.finance.service;

import com.tourguide.modules.order.mapper.TourOrderMapper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/** 周期扫描已到结算时间但尚未入账的订单。 */
@Service
public class GuideBalanceSettlementScheduler {
    private static final Logger log = LoggerFactory.getLogger(GuideBalanceSettlementScheduler.class);
    private static final int BATCH_SIZE = 100;

    private final TourOrderMapper orderMapper;
    private final GuideBalanceSettlementService settlementService;

    public GuideBalanceSettlementScheduler(TourOrderMapper orderMapper,
                                           GuideBalanceSettlementService settlementService) {
        this.orderMapper = orderMapper;
        this.settlementService = settlementService;
    }

    @Scheduled(fixedDelayString = "${tourguide.finance.settlement-scan-delay-millis:60000}")
    public void settleDueOrders() {
        LocalDateTime now = LocalDateTime.now();
        List<Long> orderIds = orderMapper.selectDueSettlementIds(now, BATCH_SIZE);
        for (Long orderId : orderIds) {
            try {
                settlementService.settle(orderId, now);
            } catch (RuntimeException exception) {
                log.error("Guide balance settlement failed, orderId={}", orderId, exception);
            }
        }
    }
}