VIPJAVA/12306-demo/my-ticket-service/src/main/java/com/sf/service/impl/TicketServiceImpl.java

package com.sf.service.impl;

import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson2.JSON;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.google.common.collect.Lists;
import com.sf.dto.SeatClassDTO;
import com.sf.dto.TicketListDTO;
import com.sf.dto.domain.RouteDTO;
import com.sf.dto.remote.TicketOrderCreateRemoteReqDTO;
import com.sf.dto.remote.TicketOrderItemCreateRemoteReqDTO;
import com.sf.dto.req.PurchaseTicketReqDTO;
import com.sf.dto.req.TicketPageQueryReqDTO;
import com.sf.dto.resp.TicketOrderDetailRespDTO;
import com.sf.dto.resp.TicketPageQueryRespDTO;
import com.sf.dto.resp.TicketPurchaseRespDTO;
import com.sf.dto.resp.TrainPurchaseTicketRespDTO;
import com.sf.entity.*;
import com.sf.mapper.*;
import com.sf.remote.TicketOrderRemoteService;
import com.sf.service.TicketService;
import com.sf.service.handler.TrainSeatTypeSelector;
import com.sf.util.DateUtil;
import com.sf.util.StationCalculateUtil;
import com.sf.util.TimeStringComparator;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.opengoofy.index12306.framework.starter.cache.DistributedCache;
import org.opengoofy.index12306.framework.starter.cache.toolkit.CacheUtil;
import org.opengoofy.index12306.framework.starter.convention.exception.ServiceException;
import org.opengoofy.index12306.framework.starter.convention.result.Result;
import org.opengoofy.index12306.frameworks.starter.user.core.UserContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

import static com.sf.constant.Index12306Constant.ADVANCE_TICKET_DAY;
import static com.sf.constant.RedisKeyConstant.*;
import static com.sf.util.DateUtil.convertDateToLocalTime;

@Slf4j
@RequiredArgsConstructor
@Service
public class TicketServiceImpl extends ServiceImpl<TicketMapper, TicketDO> implements TicketService {

    private final DistributedCache distributedCache;
    private final StationMapper stationMapper;
    private final TrainStationRelationMapper trainStationRelationMapper;
    private final TrainMapper trainMapper;
    private final TrainStationPriceMapper trainStationPriceMapper;
    private final TrainStationMapper trainStationMapper;
    private final SeatMapper seatMapper;

    private final TrainSeatTypeSelector trainSeatTypeSelector;
    private final TicketOrderRemoteService ticketOrderRemoteService;

    @Override
    public TicketPageQueryRespDTO pageListTicketQueryByMysql(TicketPageQueryReqDTO requestParam) {
        System.out.println("TicketPageQueryRespDTO pageListTicketQueryByMysql");
        // 准备stationDetails 找到出发站和到达站的名字
        // INSERT INTO `t_station` (`id`, `code`, `name`, `spell`, `region`, `region_name`, `create_time`, `update_time`, `del_flag`)
        // VALUES
        //	(1, 'VNP', '北京南', 'beijingnan', 'BJP', '北京', '2023-06-01 20:54:00', '2023-06-01 20:54:00', 0);
        List<StationDO> stationDOList = stationMapper.selectList(Wrappers.emptyWrapper());
        Map<String, String> regionTrainStationMap = new HashMap<>();
        stationDOList.forEach(each -> regionTrainStationMap.put(each.getCode(), each.getRegionName()));

        List<Object> stationDetails = new ArrayList<>();
        stationDetails.add(regionTrainStationMap.get(requestParam.getFromStation()));
        stationDetails.add(regionTrainStationMap.get(requestParam.getToStation()));

//        LambdaQueryWrapper<StationDO> stationWrapper = new LambdaQueryWrapper<>();
//        stationWrapper.in(StationDO::getCode, List.of(requestParam.getFromStation(), requestParam.getToStation()));
//        List<StationDO> stationDOS = stationMapper.selectList(stationWrapper);

        // 这里可以直接将code值传入数据库  就不需要再转化成map了

        // 然后将两个名字作为参数 去 train_station_relation表中查询
        // INSERT INTO `t_train_station_relation` (`id`, `train_id`, `departure`, `arrival`, `start_region`, `end_region`, `departure_flag`, `arrival_flag`, `departure_time`, `arrival_time`, `create_time`, `update_time`, `del_flag`)
        // VALUES
        // (1665025584123056128, 1, '北京南', '济南西', '北京', '济南', 1, 0, '2023-06-01 09:56:00', '2023-06-01 11:19:00', '2023-06-04 00:00:09', '2023-06-04 00:00:09', 0);
        // select * from t_train_station_relation where start_region = '北京' and end_region = '杭州'
        LambdaQueryWrapper<TrainStationRelationDO> queryWrapper = Wrappers.lambdaQuery(TrainStationRelationDO.class)
                .eq(TrainStationRelationDO::getStartRegion, stationDetails.get(0))
                .eq(TrainStationRelationDO::getEndRegion, stationDetails.get(1));
        List<TrainStationRelationDO> trainStationRelationList = trainStationRelationMapper.selectList(queryWrapper);

        // 将TrainDO和TrainStationRelationDO中的数据整合在一起
        List<TicketListDTO> seatResults = new ArrayList<>();
//        Map<Object, Object> regionTrainStationAllMap = new HashMap<>();
        // 遍历找到的车次 (4个)
        for (TrainStationRelationDO each : trainStationRelationList) {
            // INSERT INTO `t_train` (`id`, `train_number`, `train_type`, `train_tag`, `train_brand`, `start_station`, `end_station`, `start_region`, `end_region`, `sale_time`, `sale_status`, `departure_time`, `arrival_time`, `create_time`, `update_time`, `del_flag`)
            // VALUES
            // (1, 'G35', 0, '0,1,2', '0,6', '北京南', '宁波', '北京', '宁波', '2023-05-15 14:30:00', 0, '2023-06-01 09:56:00', '2023-06-01 15:14:00', '2023-06-01 20:45:00', '2023-06-01 20:45:00', 0);
            TrainDO trainDO = trainMapper.selectById(each.getTrainId());

            TicketListDTO result = new TicketListDTO();
            result.setTrainId(String.valueOf(trainDO.getId()));
            result.setTrainNumber(trainDO.getTrainNumber());
            result.setDepartureTime(convertDateToLocalTime(each.getDepartureTime(), "HH:mm"));
            result.setArrivalTime(convertDateToLocalTime(each.getArrivalTime(), "HH:mm"));
            result.setDuration(DateUtil.calculateHourDifference(each.getDepartureTime(), each.getArrivalTime()));
            result.setDeparture(each.getDeparture());
            result.setArrival(each.getArrival());
            result.setDepartureFlag(each.getDepartureFlag());
            result.setArrivalFlag(each.getArrivalFlag());
            result.setTrainType(trainDO.getTrainType());
            result.setTrainBrand(trainDO.getTrainBrand());
            if (StrUtil.isNotBlank(trainDO.getTrainTag())) {
                result.setTrainTags(StrUtil.split(trainDO.getTrainTag(), ","));
            }
            long betweenDay = cn.hutool.core.date.DateUtil.betweenDay(each.getDepartureTime(), each.getArrivalTime(), false);
            result.setDaysArrived((int) betweenDay);
            result.setSaleStatus(new Date().after(trainDO.getSaleTime()) ? 0 : 1);
            result.setSaleTime(convertDateToLocalTime(trainDO.getSaleTime(), "MM-dd HH:mm"));
            seatResults.add(result);
//            regionTrainStationAllMap.put(
//                    // TrainId_Departure_Arrival
//                    CacheUtil.buildKey(String.valueOf(each.getTrainId()), each.getDeparture(), each.getArrival()),
//                    JSON.toJSONString(result));
        }
        // 按照出发时间排序
        seatResults = seatResults.stream().sorted(new TimeStringComparator()).toList();

        for (TicketListDTO each : seatResults) {
            // INSERT INTO `t_train_station_relation` (`id`, `train_id`, `departure`, `arrival`, `start_region`, `end_region`, `departure_flag`, `arrival_flag`, `departure_time`, `arrival_time`, `create_time`, `update_time`, `del_flag`)
            // VALUES
            //	(1665025584206942208, 1, '北京南', '杭州东', '北京', '杭州', 1, 0, '2023-06-01 09:56:00', '2023-06-01 14:26:00', '2023-06-04 00:00:09', '2023-06-04 00:00:09', 0);
            // select * from t_train_station_price where departure = '北京南' and arrival = '杭州东' and train_id = '1'
            LambdaQueryWrapper<TrainStationPriceDO> trainStationPriceQueryWrapper = Wrappers.lambdaQuery(TrainStationPriceDO.class)
                    .eq(TrainStationPriceDO::getDeparture, each.getDeparture())
                    .eq(TrainStationPriceDO::getArrival, each.getArrival())
                    .eq(TrainStationPriceDO::getTrainId, each.getTrainId());
            List<TrainStationPriceDO> trainStationPriceDOList = trainStationPriceMapper.selectList(trainStationPriceQueryWrapper);

            // 查询结果
            // INSERT INTO `t_train_station_price` (`id`, `train_id`, `departure`, `arrival`, `seat_type`, `price`, `create_time`, `update_time`, `del_flag`)
            // VALUES
            // (1664877136516444160, 1, '北京南', '杭州东', 0, 231300, '2023-06-03 14:10:16', '2023-06-03 14:10:16', 0);

            // 这里是3条  对应商务座、一等座、二等座的价格
            List<SeatClassDTO> seatClassList = new ArrayList<>();
            trainStationPriceDOList.forEach(item -> {
                String trainId = each.getTrainId();
                String departure = item.getDeparture();
                String arrival = item.getArrival();

                //  Map<String, String> seatMarginMap = seatMarginCacheLoader.load(
                //       String.valueOf(each.getTrainId()), seatType, item.getDeparture(), item.getArrival());
                Map<String, Map<String, String>> trainStationRemainingTicketMaps = new LinkedHashMap<>();
                // INSERT INTO `t_train` (`id`, `train_number`, `train_type`, `train_tag`, `train_brand`, `start_station`, `end_station`, `start_region`, `end_region`, `sale_time`, `sale_status`, `departure_time`, `arrival_time`, `create_time`, `update_time`, `del_flag`)
                // VALUES
                //	(1, 'G35', 0, '0,1,2', '0,6', '北京南', '宁波', '北京', '宁波', '2023-05-15 14:30:00', 0, '2023-06-01 09:56:00', '2023-06-01 15:14:00', '2023-06-01 20:45:00', '2023-06-01 20:45:00', 0);
                TrainDO trainDO = trainMapper.selectById(each.getTrainId());
                // select departure from t_train_station where train_id = '1'
                LambdaQueryWrapper<TrainStationDO> queryWrapperNew = Wrappers.lambdaQuery(TrainStationDO.class)
                        .eq(TrainStationDO::getTrainId, trainId)
                        .select(TrainStationDO::getDeparture);
                List<TrainStationDO> trainStationDOList = trainStationMapper.selectList(queryWrapperNew);
                // 把查询到的出发站放在这个list中
                List<String> trainStationAllList = trainStationDOList.stream().map(TrainStationDO::getDeparture).collect(Collectors.toList());
                // 计算出发站和终点站中间的站点
                List<RouteDTO> routeDTOList = StationCalculateUtil.throughStation(trainStationAllList, departure, arrival);

                // 假设不为空
                // G高铁是0 D动车1 Z直达是2
                switch (trainDO.getTrainType()) {
                    case 0 -> {
                        for (RouteDTO routeDTO : routeDTOList) {
                            Map<String, String> trainStationRemainingTicket = new LinkedHashMap<>();
                            trainStationRemainingTicket.put("0", selectSeatMargin(trainId, 0, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("1", selectSeatMargin(trainId, 1, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("2", selectSeatMargin(trainId, 2, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            String actualKeySuffix = CacheUtil.buildKey(trainId, routeDTO.getStartStation(), routeDTO.getEndStation());
                            trainStationRemainingTicketMaps.put(TRAIN_STATION_REMAINING_TICKET + actualKeySuffix, trainStationRemainingTicket);
                        }
                    }
                    case 1 -> {
                        for (RouteDTO routeDTO : routeDTOList) {
                            Map<String, String> trainStationRemainingTicket = new LinkedHashMap<>();
                            trainStationRemainingTicket.put("3", selectSeatMargin(trainId, 3, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("4", selectSeatMargin(trainId, 4, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("5", selectSeatMargin(trainId, 5, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("13", selectSeatMargin(trainId, 13, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            String actualKeySuffix = CacheUtil.buildKey(trainId, routeDTO.getStartStation(), routeDTO.getEndStation());
                            trainStationRemainingTicketMaps.put(TRAIN_STATION_REMAINING_TICKET + actualKeySuffix, trainStationRemainingTicket);
                        }
                    }
                    case 2 -> {
                        for (RouteDTO routeDTO : routeDTOList) {
                            Map<String, String> trainStationRemainingTicket = new LinkedHashMap<>();
                            trainStationRemainingTicket.put("6", selectSeatMargin(trainId, 6, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("7", selectSeatMargin(trainId, 7, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("8", selectSeatMargin(trainId, 8, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            trainStationRemainingTicket.put("13", selectSeatMargin(trainId, 13, routeDTO.getStartStation(), routeDTO.getEndStation()));
                            String actualKeySuffix = CacheUtil.buildKey(trainId, routeDTO.getStartStation(), routeDTO.getEndStation());
                            trainStationRemainingTicketMaps.put(TRAIN_STATION_REMAINING_TICKET + actualKeySuffix, trainStationRemainingTicket);
                        }
                    }
                }

                String keySuffix = CacheUtil.buildKey(trainId, departure, arrival);
                Map<String, String> seatMarginMap = trainStationRemainingTicketMaps.get(TRAIN_STATION_REMAINING_TICKET + keySuffix);
                int quantity = Integer.parseInt(seatMarginMap.get(String.valueOf(item.getSeatType())));

                seatClassList.add(new SeatClassDTO(
                        item.getSeatType(), quantity,
                        new BigDecimal(item.getPrice()).divide(new BigDecimal("100"), 1, RoundingMode.HALF_UP), false));
            });
            each.setSeatClassList(seatClassList);
        }

        return TicketPageQueryRespDTO.builder()
                .trainList(seatResults)
                .departureStationList(buildDepartureStationList(seatResults))
                .arrivalStationList(buildArrivalStationList(seatResults))
                .trainBrandList(buildTrainBrandList(seatResults))
                .seatClassTypeList(buildSeatClassList(seatResults))
                .build();
    }

    private String selectSeatMargin(String trainId, Integer type, String departure, String arrival) {
        LambdaQueryWrapper<SeatDO> queryWrapper = Wrappers.lambdaQuery(SeatDO.class)
                .eq(SeatDO::getTrainId, trainId)
                .eq(SeatDO::getSeatType, type)
                .eq(SeatDO::getSeatStatus, 0)
                .eq(SeatDO::getStartStation, departure)
                .eq(SeatDO::getEndStation, arrival);
        return String.valueOf(seatMapper.selectCount(queryWrapper));
    }

    // http://localhost:9000/api/ticket-service/ticket/query?fromStation=BJP&toStation=HZH&departureDate=2024-05-15
    @Override
    public TicketPageQueryRespDTO pageListTicketQueryByRedis(TicketPageQueryReqDTO requestParam) {

        StringRedisTemplate stringRedisTemplate = (StringRedisTemplate) distributedCache.getInstance();

        // 先获取 index12306-ticket-service:region_train_station_mapping 中的数据
        // 得到出发站和目的站的名字
        List<Object> stationDetails = stringRedisTemplate.opsForHash()
                .multiGet(REGION_TRAIN_STATION_MAPPING, Lists.newArrayList(requestParam.getFromStation(), requestParam.getToStation()));

        // index12306-ticket-service:region_train_station:%s_%s
        // 拼接出key  index12306-ticket-service:region_train_station:北京_杭州
        String buildRegionTrainStationHashKey = String.format(REGION_TRAIN_STATION, stationDetails.get(0), stationDetails.get(1));
        // 从redis中 取出key存储的value值  对应一个map结果
        Map<Object, Object> regionTrainStationAllMap = stringRedisTemplate.opsForHash().entries(buildRegionTrainStationHashKey);
        // 遍历其中每个元素 转化为多个TicketListDTO对象组成的list
        List<TicketListDTO> seatResults = regionTrainStationAllMap.values().stream().map(
                each -> JSON.parseObject(each.toString(), TicketListDTO.class)).toList();

        //使用普通的方式来处理的逻辑
//        List<TicketListDTO> newSeatResults = new ArrayList<>();
//        Collection<Object> values = regionTrainStationAllMap.values();
//        values.forEach((Object each) -> {
//            TicketListDTO ticketListDTO = JSON.parseObject(each.toString(), TicketListDTO.class);
//            newSeatResults.add(ticketListDTO);
//        });

        // 按照出发时间排序
        seatResults = seatResults.stream().sorted(new TimeStringComparator()).toList();
        for (TicketListDTO each : seatResults) {
            // index12306-ticket-service:train_station_price:%s_%s_%s
            // 拼接成key index12306-ticket-service:train_station_price:1_北京南_杭州东
            String trainStationPriceStr = distributedCache.safeGet(
                    String.format(TRAIN_STATION_PRICE, each.getTrainId(), each.getDeparture(), each.getArrival()),
                    String.class,
                    null,
                    ADVANCE_TICKET_DAY,
                    TimeUnit.DAYS
            );
            // 返回结果是由 TrainStationPriceDO对象组成的list 所转化的json数据
            List<TrainStationPriceDO> trainStationPriceDOList = JSON.parseArray(trainStationPriceStr, TrainStationPriceDO.class);
            List<SeatClassDTO> seatClassList = new ArrayList<>();
            // 遍历每一个TrainStationPriceDO
            trainStationPriceDOList.forEach(item -> {
                String seatType = String.valueOf(item.getSeatType());
                // 拼接成key index12306-ticket-service:train_station_remaining_ticket:1_北京南_杭州东
                String keySuffix = StrUtil.join("_", each.getTrainId(), item.getDeparture(), item.getArrival());
                // 获取每个席别对应的票数
                Object quantityObj = stringRedisTemplate.opsForHash().get(TRAIN_STATION_REMAINING_TICKET + keySuffix, seatType);
                int quantity = Optional.ofNullable(quantityObj).map(Object::toString).map(Integer::parseInt).get();
                seatClassList.add(new SeatClassDTO(item.getSeatType(), quantity,
                        new BigDecimal(item.getPrice()).divide(new BigDecimal("100"), 1, RoundingMode.HALF_UP),
                        false));
            });
            each.setSeatClassList(seatClassList);
        }

        // 组装数据
        return TicketPageQueryRespDTO.builder()
                .trainList(seatResults)
                .departureStationList(buildDepartureStationList(seatResults))
                .arrivalStationList(buildArrivalStationList(seatResults))
                .trainBrandList(buildTrainBrandList(seatResults))
                .seatClassTypeList(buildSeatClassList(seatResults))
                .build();
    }

    @Override
    public TicketPurchaseRespDTO purchaseTicketsV2(PurchaseTicketReqDTO requestParam) {
        return executePurchaseTickets(requestParam);
    }

    public TicketPurchaseRespDTO executePurchaseTickets(PurchaseTicketReqDTO requestParam) {
        List<TicketOrderDetailRespDTO> ticketOrderDetailResults = new ArrayList<>();
        String trainId = requestParam.getTrainId();
        // 节假日高并发购票Redis能扛得住么？详情查看：https://nageoffer.com/12306/question
        TrainDO trainDO = trainMapper.selectById(trainId);
        List<TrainPurchaseTicketRespDTO> trainPurchaseTicketResults = trainSeatTypeSelector.select(trainDO.getTrainType(), requestParam);
        List<TicketDO> ticketDOList = trainPurchaseTicketResults.stream()
                .map(each -> TicketDO.builder()
                        .username(UserContext.getUsername())
                        .trainId(Long.parseLong(requestParam.getTrainId()))
                        .carriageNumber(each.getCarriageNumber())
                        .seatNumber(each.getSeatNumber())
                        .passengerId(each.getPassengerId())
                        .ticketStatus(0) //未支付状态
                        .build())
                .toList();
        saveBatch(ticketDOList);
        Result<String> ticketOrderResult;
        try {
            List<TicketOrderItemCreateRemoteReqDTO> orderItemCreateRemoteReqDTOList = new ArrayList<>();
            trainPurchaseTicketResults.forEach(each -> {
                TicketOrderItemCreateRemoteReqDTO orderItemCreateRemoteReqDTO = TicketOrderItemCreateRemoteReqDTO.builder()
                        .amount(each.getAmount())
                        .carriageNumber(each.getCarriageNumber())
                        .seatNumber(each.getSeatNumber())
                        .idCard(each.getIdCard())
                        .idType(each.getIdType())
                        .phone(each.getPhone())
                        .seatType(each.getSeatType())
                        .ticketType(each.getUserType())
                        .realName(each.getRealName())
                        .build();
                TicketOrderDetailRespDTO ticketOrderDetailRespDTO = TicketOrderDetailRespDTO.builder()
                        .amount(each.getAmount())
                        .carriageNumber(each.getCarriageNumber())
                        .seatNumber(each.getSeatNumber())
                        .idCard(each.getIdCard())
                        .idType(each.getIdType())
                        .seatType(each.getSeatType())
                        .ticketType(each.getUserType())
                        .realName(each.getRealName())
                        .build();
                orderItemCreateRemoteReqDTOList.add(orderItemCreateRemoteReqDTO);
                ticketOrderDetailResults.add(ticketOrderDetailRespDTO);
            });
            LambdaQueryWrapper<TrainStationRelationDO> queryWrapper = Wrappers.lambdaQuery(TrainStationRelationDO.class)
                    .eq(TrainStationRelationDO::getTrainId, trainId)
                    .eq(TrainStationRelationDO::getDeparture, requestParam.getDeparture())
                    .eq(TrainStationRelationDO::getArrival, requestParam.getArrival());
            TrainStationRelationDO trainStationRelationDO = trainStationRelationMapper.selectOne(queryWrapper);
            TicketOrderCreateRemoteReqDTO orderCreateRemoteReqDTO = TicketOrderCreateRemoteReqDTO.builder()
                    .departure(requestParam.getDeparture())
                    .arrival(requestParam.getArrival())
                    .orderTime(new Date())
                    .source(0) //购票方式  互联网购票是0
                    .trainNumber(trainDO.getTrainNumber())
                    .departureTime(trainStationRelationDO.getDepartureTime())
                    .arrivalTime(trainStationRelationDO.getArrivalTime())
                    .ridingDate(trainStationRelationDO.getDepartureTime())
                    .userId(UserContext.getUserId())
                    .username(UserContext.getUsername())
                    .trainId(Long.parseLong(requestParam.getTrainId()))
                    .ticketOrderItems(orderItemCreateRemoteReqDTOList)
                    .build();
            ticketOrderResult = ticketOrderRemoteService.createTicketOrder(orderCreateRemoteReqDTO);
            if (!ticketOrderResult.isSuccess() || StrUtil.isBlank(ticketOrderResult.getData())) {
                log.error("订单服务调用失败，返回结果：{}", ticketOrderResult.getMessage());
                throw new ServiceException("订单服务调用失败");
            }
        } catch (Throwable ex) {
            log.error("远程调用订单服务创建错误，请求参数：{}", JSON.toJSONString(requestParam), ex);
            throw ex;
        }
        return new TicketPurchaseRespDTO(ticketOrderResult.getData(), ticketOrderDetailResults);
    }


    private List<String> buildDepartureStationList(List<TicketListDTO> seatResults) {
        return seatResults.stream().map(TicketListDTO::getDeparture).distinct().collect(Collectors.toList());
    }

    private List<String> buildArrivalStationList(List<TicketListDTO> seatResults) {
        return seatResults.stream().map(TicketListDTO::getArrival).distinct().collect(Collectors.toList());
    }

    private List<Integer> buildSeatClassList(List<TicketListDTO> seatResults) {
        Set<Integer> resultSeatClassList = new HashSet<>();
        for (TicketListDTO each : seatResults) {
            for (SeatClassDTO item : each.getSeatClassList()) {
                resultSeatClassList.add(item.getType());
            }
        }
        return resultSeatClassList.stream().toList();
    }

    private List<Integer> buildTrainBrandList(List<TicketListDTO> seatResults) {
        Set<Integer> trainBrandSet = new HashSet<>();
        for (TicketListDTO each : seatResults) {
            if (StrUtil.isNotBlank(each.getTrainBrand())) {
                trainBrandSet.addAll(StrUtil.split(each.getTrainBrand(), ",").stream().map(Integer::parseInt).toList());
            }
        }
        return trainBrandSet.stream().toList();
    }
}