package com.ruoyi.system.service.impl;
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import java.math.BigDecimal;
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import java.math.RoundingMode;
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import java.util.Calendar;
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import java.util.Date;
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import java.util.List;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import com.ruoyi.system.domain.VehicleGps;
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import com.ruoyi.system.domain.VehicleMileageStats;
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import com.ruoyi.system.domain.TaskTimeInterval;
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import com.ruoyi.system.mapper.VehicleGpsMapper;
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import com.ruoyi.system.mapper.VehicleMileageStatsMapper;
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import com.ruoyi.system.service.IVehicleMileageStatsService;
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/**
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* 车辆里程统计Service业务层处理
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*/
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@Service
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public class VehicleMileageStatsServiceImpl implements IVehicleMileageStatsService {
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private static final Logger logger = LoggerFactory.getLogger(VehicleMileageStatsServiceImpl.class);
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/** 地球半径（公里） */
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private static final double EARTH_RADIUS_KM = 6371.0;
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@Autowired
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private VehicleMileageStatsMapper vehicleMileageStatsMapper;
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@Autowired
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private VehicleGpsMapper vehicleGpsMapper;
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/**
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* 查询车辆里程统计
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*/
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@Override
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public VehicleMileageStats selectVehicleMileageStatsById(Long statsId) {
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return vehicleMileageStatsMapper.selectVehicleMileageStatsById(statsId);
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}
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/**
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* 查询车辆里程统计列表
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*/
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@Override
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public List<VehicleMileageStats> selectVehicleMileageStatsList(VehicleMileageStats vehicleMileageStats) {
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return vehicleMileageStatsMapper.selectVehicleMileageStatsList(vehicleMileageStats);
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}
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/**
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* 新增车辆里程统计
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*/
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@Override
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public int insertVehicleMileageStats(VehicleMileageStats vehicleMileageStats) {
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return vehicleMileageStatsMapper.insertVehicleMileageStats(vehicleMileageStats);
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}
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/**
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* 修改车辆里程统计
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*/
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@Override
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public int updateVehicleMileageStats(VehicleMileageStats vehicleMileageStats) {
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return vehicleMileageStatsMapper.updateVehicleMileageStats(vehicleMileageStats);
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}
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/**
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* 批量删除车辆里程统计
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*/
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@Override
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public int deleteVehicleMileageStatsByIds(Long[] statsIds) {
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return vehicleMileageStatsMapper.deleteVehicleMileageStatsByIds(statsIds);
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}
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/**
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* 删除车辆里程统计信息
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*/
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@Override
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public int deleteVehicleMileageStatsById(Long statsId) {
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return vehicleMileageStatsMapper.deleteVehicleMileageStatsById(statsId);
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}
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/**
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* 计算并保存指定车辆指定日期的里程统计
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*/
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@Override
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public VehicleMileageStats calculateAndSaveMileageStats(Long vehicleId, Date statDate) {
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try {
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// 1. 获取统计日期的开始和结束时间
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Calendar calendar = Calendar.getInstance();
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calendar.setTime(statDate);
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calendar.set(Calendar.HOUR_OF_DAY, 0);
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calendar.set(Calendar.MINUTE, 0);
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calendar.set(Calendar.SECOND, 0);
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calendar.set(Calendar.MILLISECOND, 0);
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Date dayStart = calendar.getTime();
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calendar.add(Calendar.DAY_OF_MONTH, 1);
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Date dayEnd = calendar.getTime();
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// 2. 查询车辆在该日期的GPS数据（按时间排序）
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List<VehicleGps> gpsList = vehicleGpsMapper.selectGpsDataByTimeRange(vehicleId, dayStart, dayEnd);
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if (gpsList == null || gpsList.isEmpty()) {
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logger.info("车辆ID: {} 在日期: {} 无GPS数据", vehicleId, statDate);
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return null;
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}
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// 3. 查询车辆在该日期的任务时间区间
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List<TaskTimeInterval> taskIntervals = vehicleMileageStatsMapper.selectTaskTimeIntervals(vehicleId, dayStart, dayEnd);
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// 4. 计算里程
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MileageCalculation calculation = calculateMileage(gpsList, taskIntervals);
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// 5. 查询或创建统计记录
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VehicleMileageStats stats = vehicleMileageStatsMapper.selectByVehicleIdAndDate(vehicleId, statDate);
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boolean isNew = (stats == null);
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if (isNew) {
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stats = new VehicleMileageStats();
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stats.setVehicleId(vehicleId);
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stats.setStatDate(statDate);
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// 获取车牌号
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if (!gpsList.isEmpty() && gpsList.get(0).getVehicleNo() != null) {
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stats.setVehicleNo(gpsList.get(0).getVehicleNo());
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}
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}
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// 6. 设置统计数据
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stats.setTotalMileage(calculation.totalMileage);
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stats.setTaskMileage(calculation.taskMileage);
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stats.setNonTaskMileage(calculation.nonTaskMileage);
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stats.setTaskRatio(calculation.taskRatio);
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stats.setGpsPointCount(gpsList.size());
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stats.setTaskCount(taskIntervals == null ? 0 : taskIntervals.size());
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// 7. 保存到数据库
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if (isNew) {
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vehicleMileageStatsMapper.insertVehicleMileageStats(stats);
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} else {
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vehicleMileageStatsMapper.updateVehicleMileageStats(stats);
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}
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logger.info("车辆ID: {} 日期: {} 里程统计完成 - 总里程: {}km, 任务里程: {}km, 非任务里程: {}km, 占比: {}",
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vehicleId, statDate, calculation.totalMileage, calculation.taskMileage,
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calculation.nonTaskMileage, calculation.taskRatio);
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return stats;
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} catch (Exception e) {
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logger.error("计算车辆里程统计失败 - 车辆ID: {}, 日期: {}", vehicleId, statDate, e);
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throw new RuntimeException("计算里程统计失败: " + e.getMessage());
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}
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}
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/**
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* 批量计算所有车辆指定日期的里程统计
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*/
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@Override
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public int batchCalculateMileageStats(Date statDate) {
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try {
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// 查询所有活跃车辆
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List<Long> vehicleIds = vehicleGpsMapper.selectActiveVehicleIds();
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if (vehicleIds == null || vehicleIds.isEmpty()) {
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logger.info("没有找到活跃车辆");
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return 0;
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}
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int successCount = 0;
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for (Long vehicleId : vehicleIds) {
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try {
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calculateAndSaveMileageStats(vehicleId, statDate);
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successCount++;
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} catch (Exception e) {
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logger.error("计算车辆 {} 的里程统计失败", vehicleId, e);
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}
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}
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logger.info("批量里程统计完成 - 日期: {}, 总车辆数: {}, 成功: {}", statDate, vehicleIds.size(), successCount);
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return successCount;
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} catch (Exception e) {
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logger.error("批量计算里程统计失败 - 日期: {}", statDate, e);
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throw new RuntimeException("批量计算失败: " + e.getMessage());
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}
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}
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/**
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* 计算里程的内部方法
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*/
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private MileageCalculation calculateMileage(List<VehicleGps> gpsList, List<TaskTimeInterval> taskIntervals) {
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MileageCalculation result = new MileageCalculation();
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// 遍历GPS点，计算相邻点之间的距离
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for (int i = 0; i < gpsList.size() - 1; i++) {
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VehicleGps p1 = gpsList.get(i);
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VehicleGps p2 = gpsList.get(i + 1);
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// 计算两点间距离（使用Haversine公式）
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double distance = calculateDistance(
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p1.getLatitude().doubleValue(),
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p1.getLongitude().doubleValue(),
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p2.getLatitude().doubleValue(),
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p2.getLongitude().doubleValue()
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);
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// 获取这段距离的时间区间
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Date segmentStart = p1.getCollectTime();
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Date segmentEnd = p2.getCollectTime();
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// 计算这段距离在任务时段的占比
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double taskRatio = calculateTaskOverlapRatio(segmentStart, segmentEnd, taskIntervals);
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// 分摊里程
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double taskDistance = distance * taskRatio;
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double nonTaskDistance = distance * (1 - taskRatio);
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result.totalMileage = result.totalMileage.add(BigDecimal.valueOf(distance));
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result.taskMileage = result.taskMileage.add(BigDecimal.valueOf(taskDistance));
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result.nonTaskMileage = result.nonTaskMileage.add(BigDecimal.valueOf(nonTaskDistance));
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}
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// 计算任务里程占比
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if (result.totalMileage.compareTo(BigDecimal.ZERO) > 0) {
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result.taskRatio = result.taskMileage.divide(result.totalMileage, 4, RoundingMode.HALF_UP);
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}
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// 保留两位小数
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result.totalMileage = result.totalMileage.setScale(2, RoundingMode.HALF_UP);
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result.taskMileage = result.taskMileage.setScale(2, RoundingMode.HALF_UP);
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result.nonTaskMileage = result.nonTaskMileage.setScale(2, RoundingMode.HALF_UP);
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return result;
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}
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/**
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* 使用Haversine公式计算两个GPS坐标之间的距离（公里）
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*/
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private double calculateDistance(double lat1, double lon1, double lat2, double lon2) {
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// 将角度转换为弧度
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double dLat = Math.toRadians(lat2 - lat1);
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double dLon = Math.toRadians(lon2 - lon1);
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double rLat1 = Math.toRadians(lat1);
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double rLat2 = Math.toRadians(lat2);
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// Haversine公式
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double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
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Math.cos(rLat1) * Math.cos(rLat2) *
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Math.sin(dLon / 2) * Math.sin(dLon / 2);
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double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
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return EARTH_RADIUS_KM * c;
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}
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/**
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* 计算时间段与任务时段的重叠比例
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*/
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private double calculateTaskOverlapRatio(Date segmentStart, Date segmentEnd, List<TaskTimeInterval> taskIntervals) {
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if (taskIntervals == null || taskIntervals.isEmpty()) {
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return 0.0;
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}
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long segmentDuration = segmentEnd.getTime() - segmentStart.getTime();
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if (segmentDuration <= 0) {
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return 0.0;
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}
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long totalOverlap = 0;
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for (TaskTimeInterval task : taskIntervals) {
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// 计算重叠时间
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long overlapStart = Math.max(segmentStart.getTime(), task.getStartTime().getTime());
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long overlapEnd = Math.min(segmentEnd.getTime(), task.getEndTime().getTime());
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if (overlapEnd > overlapStart) {
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totalOverlap += (overlapEnd - overlapStart);
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}
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}
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return (double) totalOverlap / segmentDuration;
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}
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/**
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* 里程计算结果内部类
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*/
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private static class MileageCalculation {
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BigDecimal totalMileage = BigDecimal.ZERO;
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BigDecimal taskMileage = BigDecimal.ZERO;
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BigDecimal nonTaskMileage = BigDecimal.ZERO;
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BigDecimal taskRatio = BigDecimal.ZERO;
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}
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}
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