package com.xiaopeng.maintenance.schedule;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.xiaopeng.api.feignClient.account.XpOperationUserClient;
import com.xiaopeng.api.feignClient.vehicleConvoy.XpFleetOperationsClient;
import com.xiaopeng.api.feignClient.vehicleConvoy.XpVehicleClient;
import com.xiaopeng.api.model.account.XpOperationsRole;
import com.xiaopeng.api.model.maintenance.XpTask;
import com.xiaopeng.api.model.maintenance.XpTaskRule;
import com.xiaopeng.api.model.maintenance.XpTaskRuleRole;
import com.xiaopeng.api.model.vehicleConvoy.XpVehicle;
import com.xiaopeng.api.vo.automaticPilot.VehiclePosition;
import com.xiaopeng.common.core.domain.R;
import com.xiaopeng.api.vo.maintenance.TaskScheduleConstants;
import com.xiaopeng.common.core.utils.SensitiveDataCryptoUtil;
import com.xiaopeng.maintenance.mapper.XpTaskMapper;
import com.xiaopeng.maintenance.mapper.XpTaskRuleMapper;
import com.xiaopeng.maintenance.mapper.XpTaskRuleRoleMapper;
import com.xiaopeng.maintenance.service.VehicleLocationFillService;
import com.xiaopeng.maintenance.utils.UUIDUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.temporal.ChronoUnit;
import java.util.*;
import java.util.stream.Collectors;

/**
 * 年检/保险策略定时任务
 * <p>
 * 根据任务规则配置，在车辆保险、年检、运营资质即将到期时自动创建提醒任务，
 * 并下发给关联角色的运维人员
 * </p>
 *
 * @author mitao
 * @since 2026-02-27
 */
@Component
public class InsuranceInspectionScheduleTask {

    private static final Logger log = LoggerFactory.getLogger(InsuranceInspectionScheduleTask.class);

    /**
     * 任务名称
     */
    private static final String TASK_NAME = "年检/保险策略定时任务";

    @Autowired
    private XpTaskRuleMapper taskRuleMapper;

    @Autowired
    private XpTaskRuleRoleMapper taskRuleRoleMapper;

    @Autowired
    private XpTaskMapper taskMapper;

    @Autowired
    private XpVehicleClient xpVehicleClient;

    @Autowired
    private XpOperationUserClient xpOperationUserClient;

    @Autowired
    private XpFleetOperationsClient xpFleetOperationsClient;

    @Autowired
    private VehicleLocationFillService vehicleLocationFillService;

    /**
     * 每天凌晨1点执行一次
     * <p>
     * 检查逻辑：
     * 1. 获取任务规则配置
     * 2. 判断年检/保险策略功能是否启用
     * 3. 获取所有运营中的车辆
     * 4. 分别检查三种到期情况并创建任务：
     *    - 保险到期
     *    - 年检到期
     *    - 运营资质到期
     * </p>
     */
    @Scheduled(cron = "0 0 1 * * ?")
    public void executeInsuranceInspectionTask() {
        log.info("========== 开始执行年检/保险策略定时任务检查 ==========");

        // 1. 获取任务规则配置
        XpTaskRule taskRule = getTaskRule();
        if (taskRule == null) {
            log.info("未找到任务规则配置，跳过执行");
            return;
        }

        // 2. 判断年检/保险策略功能是否启用
        if (!Boolean.TRUE.equals(taskRule.getInsurance())) {
            log.info("年检/保险策略功能未启用，跳过执行");
            return;
        }

        log.info("开始执行年检/保险策略任务下发，保险提前{}天, 年检提前{}天, 运营资质提前{}天, 紧急程度: P{}",
                taskRule.getInsuranceExpires(),
                taskRule.getInsuranceInspectionExpires(),
                taskRule.getOperationQualificationExpires(),
                taskRule.getInsuranceLevel());

        try {
            // 执行任务创建
            int createdCount = createExpireTasks(taskRule);

            log.info("========== 年检/保险策略定时任务执行完成，创建任务数: {} ==========", createdCount);

        } catch (Exception e) {
            log.error("年检/保险策略定时任务执行失败", e);
        }
    }

    /**
     * 获取任务规则配置
     *
     * @return 任务规则
     */
    private XpTaskRule getTaskRule() {
        return taskRuleMapper.selectOne(new LambdaQueryWrapper<XpTaskRule>().last("limit 1"));
    }

    /**
     * 创建到期提醒任务
     *
     * @param taskRule 任务规则配置
     * @return 创建的任务数量
     */
    private int createExpireTasks(XpTaskRule taskRule) {
        // 1. 获取任务接收角色的运维人员
        List<Long> roleOperationUserIds = getOperationUserIdsByRoleType(TaskScheduleConstants.RULE_ROLE_TYPE_INSURANCE);
        if (CollectionUtils.isEmpty(roleOperationUserIds)) {
            log.warn("未找到年检/保险任务接收角色的运维人员");
            return 0;
        }

        Set<Long> roleOperationUserIdSet = new HashSet<>(roleOperationUserIds);
        log.info("找到 {} 个运维人员可接收年检/保险任务", roleOperationUserIdSet.size());

        // 2. 获取所有运营中的车辆
        List<XpVehicle> vehicles = getOperatingVehicles();
        if (CollectionUtils.isEmpty(vehicles)) {
            log.info("没有运营中的车辆，无需创建到期提醒任务");
            return 0;
        }

        log.info("找到 {} 辆运营中的车辆", vehicles.size());

        Map<String, VehiclePosition> positionByVin = vehicleLocationFillService.loadPositionByVin(
                vehicles.stream()
                        .map(XpVehicle::getVehicleVin)
                        .filter(StringUtils::hasLength)
                        .distinct()
                        .collect(Collectors.toList())
        );

        Map<Long, Long> vehicleIdToFleetIdCache = new HashMap<>();
        Map<Long, Set<Long>> fleetIdToOperationUserIdsCache = new HashMap<>();

        int totalCreatedCount = 0;

        // 3. 检查保险到期
        totalCreatedCount += checkAndCreateInsuranceExpireTasks(vehicles, roleOperationUserIdSet, taskRule,
                vehicleIdToFleetIdCache, fleetIdToOperationUserIdsCache, positionByVin);

        // 4. 检查年检到期
        totalCreatedCount += checkAndCreateInspectionExpireTasks(vehicles, roleOperationUserIdSet, taskRule,
                vehicleIdToFleetIdCache, fleetIdToOperationUserIdsCache, positionByVin);

        // 5. 检查运营资质到期
        totalCreatedCount += checkAndCreateQualificationExpireTasks(vehicles, roleOperationUserIdSet, taskRule,
                vehicleIdToFleetIdCache, fleetIdToOperationUserIdsCache, positionByVin);

        return totalCreatedCount;
    }

    /**
     * 检查并创建保险到期任务
     *
     * @param vehicles         车辆列表
     * @param roleOperationUserIds 配置角色下的运维人员ID集合
     * @param taskRule         任务规则
     * @param vehicleIdToFleetIdCache 车辆->车队缓存
     * @param fleetIdToOperationUserIdsCache 车队->人员缓存
     * @return 创建的任务数量
     */
    private int checkAndCreateInsuranceExpireTasks(List<XpVehicle> vehicles, Set<Long> roleOperationUserIds, XpTaskRule taskRule,
                                                   Map<Long, Long> vehicleIdToFleetIdCache, Map<Long, Set<Long>> fleetIdToOperationUserIdsCache,
                                                   Map<String, VehiclePosition> positionByVin) {
        if (taskRule.getInsuranceExpires() == null || taskRule.getInsuranceExpires() <= 0) {
            log.info("保险到期提醒天数未配置，跳过保险到期检查");
            return 0;
        }

        List<XpVehicle> needWarnVehicles = vehicles.stream()
                .filter(v -> isWithinExpireWarningDays(v.getInsuranceEndTime(), taskRule.getInsuranceExpires()))
                .filter(v -> !hasUnfinishedTask(v.getId(), TaskScheduleConstants.TASK_TYPE_INSURANCE_EXPIRE))
                .collect(Collectors.toList());

        if (CollectionUtils.isEmpty(needWarnVehicles)) {
            log.info("没有需要保险到期提醒的车辆");
            return 0;
        }

        log.info("找到 {} 辆车辆需要保险到期提醒", needWarnVehicles.size());

        return createTasksForExpireType(
                needWarnVehicles,
                roleOperationUserIds,
                taskRule,
                TaskScheduleConstants.TASK_TYPE_INSURANCE_EXPIRE,
                "保险即将到期",
                vehicleIdToFleetIdCache,
                fleetIdToOperationUserIdsCache,
                positionByVin
        );
    }

    /**
     * 检查并创建年检到期任务
     *
     * @param vehicles         车辆列表
     * @param roleOperationUserIds 配置角色下的运维人员ID集合
     * @param taskRule         任务规则
     * @param vehicleIdToFleetIdCache 车辆->车队缓存
     * @param fleetIdToOperationUserIdsCache 车队->人员缓存
     * @return 创建的任务数量
     */
    private int checkAndCreateInspectionExpireTasks(List<XpVehicle> vehicles, Set<Long> roleOperationUserIds, XpTaskRule taskRule,
                                                    Map<Long, Long> vehicleIdToFleetIdCache, Map<Long, Set<Long>> fleetIdToOperationUserIdsCache,
                                                    Map<String, VehiclePosition> positionByVin) {
        if (taskRule.getInsuranceInspectionExpires() == null || taskRule.getInsuranceInspectionExpires() <= 0) {
            log.info("年检到期提醒天数未配置，跳过年检到期检查");
            return 0;
        }

        List<XpVehicle> needWarnVehicles = vehicles.stream()
                .filter(v -> isWithinExpireWarningDays(v.getAnnualInspectionDate(), taskRule.getInsuranceInspectionExpires()))
                .filter(v -> !hasUnfinishedTask(v.getId(), TaskScheduleConstants.TASK_TYPE_INSPECTION_EXPIRE))
                .collect(Collectors.toList());

        if (CollectionUtils.isEmpty(needWarnVehicles)) {
            log.info("没有需要年检到期提醒的车辆");
            return 0;
        }

        log.info("找到 {} 辆车辆需要年检到期提醒", needWarnVehicles.size());

        return createTasksForExpireType(
                needWarnVehicles,
                roleOperationUserIds,
                taskRule,
                TaskScheduleConstants.TASK_TYPE_INSPECTION_EXPIRE,
                "年检即将到期",
                vehicleIdToFleetIdCache,
                fleetIdToOperationUserIdsCache,
                positionByVin
        );
    }

    /**
     * 检查并创建运营资质到期任务
     *
     * @param vehicles         车辆列表
     * @param roleOperationUserIds 配置角色下的运维人员ID集合
     * @param taskRule         任务规则
     * @param vehicleIdToFleetIdCache 车辆->车队缓存
     * @param fleetIdToOperationUserIdsCache 车队->人员缓存
     * @return 创建的任务数量
     */
    private int checkAndCreateQualificationExpireTasks(List<XpVehicle> vehicles, Set<Long> roleOperationUserIds, XpTaskRule taskRule,
                                                       Map<Long, Long> vehicleIdToFleetIdCache, Map<Long, Set<Long>> fleetIdToOperationUserIdsCache,
                                                       Map<String, VehiclePosition> positionByVin) {
        if (taskRule.getOperationQualificationExpires() == null || taskRule.getOperationQualificationExpires() <= 0) {
            log.info("运营资质到期提醒天数未配置，跳过运营资质到期检查");
            return 0;
        }

        List<XpVehicle> needWarnVehicles = vehicles.stream()
                .filter(v -> isWithinExpireWarningDays(v.getQualificationExpireTime(), taskRule.getOperationQualificationExpires()))
                .filter(v -> !hasUnfinishedTask(v.getId(), TaskScheduleConstants.TASK_TYPE_QUALIFICATION_EXPIRE))
                .collect(Collectors.toList());

        if (CollectionUtils.isEmpty(needWarnVehicles)) {
            log.info("没有需要运营资质到期提醒的车辆");
            return 0;
        }

        log.info("找到 {} 辆车辆需要运营资质到期提醒", needWarnVehicles.size());

        return createTasksForExpireType(
                needWarnVehicles,
                roleOperationUserIds,
                taskRule,
                TaskScheduleConstants.TASK_TYPE_QUALIFICATION_EXPIRE,
                "运营资质即将到期",
                vehicleIdToFleetIdCache,
                fleetIdToOperationUserIdsCache,
                positionByVin
        );
    }

    /**
     * 判断是否在到期提醒范围内
     *
     * @param expireTime        到期时间
     * @param daysBeforeExpire 提前X天提醒
     * @return 是否需要提醒
     */
    private boolean isWithinExpireWarningDays(LocalDateTime expireTime, Integer daysBeforeExpire) {
        if (expireTime == null || daysBeforeExpire == null || daysBeforeExpire <= 0) {
            return false;
        }

        LocalDate today = LocalDate.now();
        LocalDate expireDate = expireTime.toLocalDate();
        long daysUntilExpire = ChronoUnit.DAYS.between(today, expireDate);

        // 距离到期天数 <= 配置的提前天数，且未过期（daysUntilExpire >= 0）
        return daysUntilExpire >= 0 && daysUntilExpire <= daysBeforeExpire;
    }

    /**
     * 检查是否已存在未完成的同类型任务
     * <p>
     * 避免重复创建到期提醒任务
     * </p>
     *
     * @param vehicleId  车辆ID
     * @param taskTypeId 任务类型ID
     * @return 是否存在未完成任务
     */
    private boolean hasUnfinishedTask(Long vehicleId, String taskTypeId) {
        XpTask existingTask = taskMapper.selectOne(
                new LambdaQueryWrapper<XpTask>()
                        .eq(XpTask::getVehicleId, vehicleId)
                        .eq(XpTask::getTaskTypeId, taskTypeId)
                        .in(XpTask::getStatus,
                                TaskScheduleConstants.TASK_STATUS_PENDING_ARRIVE,
                                TaskScheduleConstants.TASK_STATUS_PENDING)
                        .last("limit 1")
        );
        return existingTask != null;
    }

    /**
     * 为指定到期类型创建任务
     *
     * @param vehicles         需要提醒的车辆列表
     * @param roleOperationUserIds 配置角色下的运维人员ID集合
     * @param taskRule         任务规则
     * @param taskTypeId       任务类型ID
     * @param taskDescription  任务描述
     * @param vehicleIdToFleetIdCache 车辆->车队缓存
     * @param fleetIdToOperationUserIdsCache 车队->人员缓存
     * @return 创建的任务数量
     */
    private int createTasksForExpireType(List<XpVehicle> vehicles, Set<Long> roleOperationUserIds,
                                         XpTaskRule taskRule, String taskTypeId, String taskDescription,
                                         Map<Long, Long> vehicleIdToFleetIdCache,
                                         Map<Long, Set<Long>> fleetIdToOperationUserIdsCache,
                                         Map<String, VehiclePosition> positionByVin) {
        List<XpTask> tasksToSave = new ArrayList<>();
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
        int skippedCount = 0;

        for (XpVehicle vehicle : vehicles) {
            List<Long> handleUserIds = resolveHandleUserIds(vehicle.getId(), taskTypeId, roleOperationUserIds,
                    vehicleIdToFleetIdCache, fleetIdToOperationUserIdsCache);
            if (CollectionUtils.isEmpty(handleUserIds)) {
                skippedCount++;
                continue;
            }

            String belongUserIds = handleUserIds.stream().map(String::valueOf).collect(Collectors.joining(","));

            XpTask task = new XpTask();

            // 生成任务编号
            String taskCode = sdf.format(new Date()) + UUIDUtil.getNumberRandom(5);
            task.setTaskCode(taskCode);

            // 设置任务基本信息
            task.setTaskCategory(TaskScheduleConstants.TASK_CATEGORY_ROUTINE);
            task.setTaskTypeId(taskTypeId);
            task.setTaskUrgencyLevel(taskRule.getInsuranceLevel() != null
                    ? taskRule.getInsuranceLevel()
                    : TaskScheduleConstants.URGENCY_LEVEL_P2);
            task.setTaskDescription("系统自动下发的" + taskDescription + "提醒任务");

            // 设置车辆信息
            task.setVehicleId(vehicle.getId());
            String vin = SensitiveDataCryptoUtil.decryptIfPossible(vehicle.getVehicleVin());
            vehicleLocationFillService.fillFromVin(task, vin, positionByVin);

            // 设置任务时限 常规任务限时3天
            task.setEndTime(LocalDateTime.now().plusDays(3));

            // 设置任务状态为待到达
            task.setStatus(TaskScheduleConstants.TASK_STATUS_PENDING);

            // 设置任务接收人（车辆所属车队关联人员与配置角色人员取交集）
            task.setHandleUserId(belongUserIds);
            task.setReportTime(LocalDateTime.now());
            task.setReportUserId(0L);
            // 设置创建信息
            task.setReportTime(LocalDateTime.now());
            task.setCreateBy(TaskScheduleConstants.SCHEDULE_CREATOR);
            tasksToSave.add(task);
        }

        // 批量保存任务
        if (!CollectionUtils.isEmpty(tasksToSave)) {
            for (XpTask task : tasksToSave) {
                taskMapper.insert(task);
            }
            log.info("成功创建 {} 个{}提醒任务", tasksToSave.size(), taskDescription);
        }
        if (skippedCount > 0) {
            log.warn("{}提醒任务：跳过 {} 辆车（无可分配处理人）", taskDescription, skippedCount);
        }

        return tasksToSave.size();
    }

    private List<Long> resolveHandleUserIds(Long vehicleId, String taskTypeId, Set<Long> roleOperationUserIds,
                                           Map<Long, Long> vehicleIdToFleetIdCache,
                                           Map<Long, Set<Long>> fleetIdToOperationUserIdsCache) {
        if (vehicleId == null) {
            log.warn("定时任务分配处理人失败：vehicleId为空，taskTypeId={}", taskTypeId);
            return Collections.emptyList();
        }

        Long fleetId = vehicleIdToFleetIdCache.get(vehicleId);
        if (!vehicleIdToFleetIdCache.containsKey(vehicleId)) {
            try {
                R<Long> fleetIdResult = xpVehicleClient.findFleetIdByVehicleId(vehicleId);
                fleetId = fleetIdResult != null ? fleetIdResult.getData() : null;
            } catch (Exception e) {
                log.error("根据车辆查询车队失败，vehicleId={}, taskTypeId={}", vehicleId, taskTypeId, e);
                fleetId = null;
            }
            vehicleIdToFleetIdCache.put(vehicleId, fleetId);
        }

        if (fleetId == null) {
            log.warn("定时任务跳过：车辆未关联车队，vehicleId={}, taskTypeId={}", vehicleId, taskTypeId);
            return Collections.emptyList();
        }

        Set<Long> fleetOperationUserIds = fleetIdToOperationUserIdsCache.get(fleetId);
        if (!fleetIdToOperationUserIdsCache.containsKey(fleetId)) {
            try {
                R<List<Long>> opsResult = xpFleetOperationsClient.getOperationsIdsByFleetId(fleetId);
                List<Long> opsIds = opsResult != null ? opsResult.getData() : null;
                fleetOperationUserIds = CollectionUtils.isEmpty(opsIds) ? Collections.emptySet() : new HashSet<>(opsIds);
            } catch (Exception e) {
                log.error("根据车队查询关联人员失败，fleetId={}, vehicleId={}, taskTypeId={}", fleetId, vehicleId, taskTypeId, e);
                fleetOperationUserIds = Collections.emptySet();
            }
            fleetIdToOperationUserIdsCache.put(fleetId, fleetOperationUserIds);
        }

        if (CollectionUtils.isEmpty(fleetOperationUserIds)) {
            log.warn("定时任务跳过：车队未关联人员，fleetId={}, vehicleId={}, taskTypeId={}", fleetId, vehicleId, taskTypeId);
            return Collections.emptyList();
        }

        List<Long> finalUserIds = fleetOperationUserIds.stream()
                .filter(roleOperationUserIds::contains)
                .sorted()
                .collect(Collectors.toList());
        if (CollectionUtils.isEmpty(finalUserIds)) {
            log.warn("定时任务跳过：车队人员与角色人员无交集，fleetId={}, vehicleId={}, taskTypeId={}", fleetId, vehicleId, taskTypeId);
            return Collections.emptyList();
        }

        return finalUserIds;
    }

    /**
     * 根据角色类型获取运维人员ID列表
     *
     * @param roleType 角色类型
     * @return 运维人员ID列表
     */
    private List<Long> getOperationUserIdsByRoleType(Integer roleType) {
        // 1. 获取该类型对应的角色ID
        List<XpTaskRuleRole> ruleRoles = taskRuleRoleMapper.selectList(
                new LambdaQueryWrapper<XpTaskRuleRole>()
                        .eq(XpTaskRuleRole::getRuleType, roleType)
        );

        if (CollectionUtils.isEmpty(ruleRoles)) {
            return Collections.emptyList();
        }

        // 2. 获取角色对应的运维人员
        Set<Long> userIds = new HashSet<>();
        for (XpTaskRuleRole ruleRole : ruleRoles) {
            try {
                R<List<XpOperationsRole>> result = xpOperationUserClient.getXpOperationsRoleByRoleId(ruleRole.getRoleId());
                if (result != null && result.getData() != null) {
                    userIds.addAll(
                            result.getData().stream()
                                    .map(XpOperationsRole::getOperationsUserId)
                                    .collect(Collectors.toList())
                    );
                }
            } catch (Exception e) {
                log.error("获取角色[{}]对应的运维人员失败", ruleRole.getRoleId(), e);
            }
        }

        return new ArrayList<>(userIds);
    }

    /**
     * 获取所有运营中的车辆
     *
     * @return 车辆列表
     */
    private List<XpVehicle> getOperatingVehicles() {
        try {
            R<List<XpVehicle>> result = xpVehicleClient.listVehicle();
            if (result != null && result.getData() != null) {
                // 过滤运营中的车辆 (vehicleType=2 表示运营, operatingStatus=1 表示运营中)
                return result.getData().stream()
                        .filter(v -> v.getVehicleType() != null && v.getVehicleType() == 2)
                        .filter(v -> v.getOperatingStatus() != null && v.getOperatingStatus() == 1)
                        .collect(Collectors.toList());
            }
        } catch (Exception e) {
            log.error("获取车辆列表失败", e);
        }
        return Collections.emptyList();
    }
}