package com.pz.system.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.pz.common.core.page.TableDataInfo;
import com.pz.common.core.domain.PageQuery;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.pz.common.exception.ServiceException;
import com.pz.common.utils.redis.RedisUtils;
import com.pz.merchant.domain.Employees;
import com.pz.merchant.domain.vo.SonOrderVo;
import com.pz.merchant.mapper.EmployeesMapper;
import com.pz.merchant.service.ISonOrderService;
import com.pz.system.datastructure.OrderDelayQueue;
import com.pz.system.datastructure.TotalOrderDelayOperator;
import com.pz.system.domain.DbwzOrder;
import com.pz.system.domain.TotalOrder;
import com.pz.system.domain.bo.OrderFinishedBo;
import com.pz.system.mapper.CityMapper;
import com.pz.system.mapper.TotalOrderMapper;
import com.pz.system.mapper.UserVsitorMapper;
import lombok.RequiredArgsConstructor;
import org.springframework.stereotype.Service;
import com.pz.system.domain.bo.YypzOrderBo;
import com.pz.system.domain.vo.YypzOrderVo;
import com.pz.system.domain.YypzOrder;
import com.pz.system.mapper.YypzOrderMapper;
import com.pz.system.service.IYypzOrderService;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.temporal.ChronoUnit;
import java.util.*;
import java.util.concurrent.TimeUnit;

/**
 * 预约陪诊订单Service业务层处理
 *
 * @author ruoyi
 * @date 2023-09-10
 */
@RequiredArgsConstructor
@Service
public class YypzOrderServiceImpl implements IYypzOrderService, ISonOrderService {

    private final YypzOrderMapper baseMapper;
    private final TotalOrderMapper totalOrderMapper;
    private final UserVsitorMapper userVsitorMapper;
    private final EmployeesMapper employeesMapper;
    private final OrderDelayQueue delayQueue;

    /**
     * 查询预约陪诊订单
     */
    @Override
    public YypzOrderVo queryById(Integer id) {
        return baseMapper.selectVoById(id);
    }

    /**
     * 查询预约陪诊订单列表
     */
    @Override
    public TableDataInfo<YypzOrderVo> queryPageList(YypzOrderBo bo, PageQuery pageQuery) {
        Page<YypzOrderVo> result = baseMapper.findYypzOrderVoPage(pageQuery.build(), bo);
        Optional.ofNullable(result.getRecords()).ifPresent(yypzOrderVos -> {
            yypzOrderVos.forEach(yypzOrderVo -> {
                // 就诊人员
                Optional.ofNullable(userVsitorMapper.selectVoById(yypzOrderVo.getVisitor()))
                    .ifPresent(yypzOrderVo::setUserVsitorVo);
            });
        });
        return TableDataInfo.build(result);
    }

    /**
     * 查询预约陪诊订单列表
     */
    @Override
    public List<YypzOrderVo> queryList(YypzOrderBo bo) {
        LambdaQueryWrapper<YypzOrder> lqw = buildQueryWrapper(bo);
        return baseMapper.selectVoList(lqw);
    }

    private LambdaQueryWrapper<YypzOrder> buildQueryWrapper(YypzOrderBo bo) {
        Map<String, Object> params = bo.getParams();
        LambdaQueryWrapper<YypzOrder> lqw = Wrappers.lambdaQuery();
        lqw.eq(bo.getOrderId() != null, YypzOrder::getOrderId, bo.getOrderId());
        lqw.eq(bo.getHid() != null, YypzOrder::getHid, bo.getHid());
        lqw.eq(bo.getVisitor() != null, YypzOrder::getVisitor, bo.getVisitor());
        lqw.eq(bo.getDid() != null, YypzOrder::getDid, bo.getDid());
        lqw.eq(StringUtils.isNotBlank(bo.getVisitTime()), YypzOrder::getVisitTime, bo.getVisitTime());
        lqw.eq(StringUtils.isNotBlank(bo.getPhone()), YypzOrder::getPhone, bo.getPhone());
        lqw.eq(bo.getStatus() != null, YypzOrder::getStatus, bo.getStatus());
        lqw.eq(bo.getOverTime() != null, YypzOrder::getOverTime, bo.getOverTime());
        lqw.eq(StringUtils.isNotBlank(bo.getVoucher()), YypzOrder::getVoucher, bo.getVoucher());
        return lqw;
    }

    /**
     * 新增预约陪诊订单
     */
    @Override
    public Boolean insertByBo(YypzOrderBo bo) {
        YypzOrder add = BeanUtil.toBean(bo, YypzOrder.class);
        validEntityBeforeSave(add);
        boolean flag = baseMapper.insert(add) > 0;
        if (flag) {
            bo.setId(add.getId());
        }
        return flag;
    }

    /**
     * 修改预约陪诊订单
     */
    @Override
    public Boolean updateByBo(YypzOrderBo bo) {
        YypzOrder update = BeanUtil.toBean(bo, YypzOrder.class);
        validEntityBeforeSave(update);
        return baseMapper.updateById(update) > 0;
    }

    /**
     * 保存前的数据校验
     */
    private void validEntityBeforeSave(YypzOrder entity) {
        // TODO 做一些数据校验,如唯一约束
    }

    /**
     * 批量删除预约陪诊订单
     */
    @Override
    public Boolean deleteWithValidByIds(Collection<Integer> ids, Boolean isValid) {
        if (isValid) {
            // TODO 做一些业务上的校验,判断是否需要校验
        }
        return baseMapper.deleteBatchIds(ids) > 0;
    }

    /**
     * 根据主订单ID查询子订单相关信息
     *
     * @param totalId 主订单ID
     * @return 子订单相关信息
     */
    @Override
    public SonOrderVo getSonOrderSimpleDataByTotalId(Integer totalId) {
        return baseMapper.selectSonOrderInfoByTotalId(totalId);
    }

    /**
     * 切换子订单状态
     *
     * @param totalId 主订单ID
     * @param target  子订单目标状态
     * @return 操作结果
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean switchSonOrderStatus(Long totalId, Integer target) {
        YypzOrder sonOrder = baseMapper.selectOne(Wrappers.<YypzOrder>lambdaQuery().eq(YypzOrder::getOrderId, totalId));
        Objects.requireNonNull(sonOrder, "子订单不存在，请检查");
        sonOrder.setStatus(target);
        return baseMapper.updateById(sonOrder) > 0;
    }

    /**
     * 查询预约陪诊订单详情
     *
     * @param totalId 主订单ID
     * @return 订单详情
     */
    @Override
    public Object getSonOrderDetailDataByTotalId(Integer totalId) {
        return baseMapper.selectYypzOrderDetailDataByTotalId(totalId);
    }

    /**
     * 陪诊员取消预约陪诊订单
     *
     * @param totalId 取消订单
     * @return 操作结果
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean accompanyCancellationOfOrder(Integer totalId) {
        TotalOrder totalOrder = totalOrderMapper.selectById(totalId);
        Objects.requireNonNull(totalOrder, "主订单不存在");
        Integer emId = totalOrder.getEmId();
        if (emId == 0) {
            throw new ServiceException("订单暂未分配陪诊员，拒绝该操作");
        }
        YypzOrder yypzOrder = baseMapper.selectOne(Wrappers.<YypzOrder>lambdaQuery().eq(YypzOrder::getOrderId, totalId));
        Objects.requireNonNull(yypzOrder, "子订单与主订单不一致！");
        // 若设置了就诊时间，在取消订单时需要检查是否在18小时之前
        // 取消次数
        Integer cancel = RedisUtils.<Integer>getCacheMapValue(ISonOrderService.ORDER_CANCEL_CACHE_PREFIX, String.valueOf(emId));
        if (yypzOrder.getVisitTime() != null) {
            LocalDateTime visitTime = LocalDateTime.ofInstant(yypzOrder.getVisitTime().toInstant(), ZoneId.systemDefault());
            LocalDateTime currentDate = LocalDateTime.ofInstant(new Date().toInstant(), ZoneId.systemDefault());
            // 若缓存为空，则查询数据表
            if (cancel == null) {
                cancel = Optional.ofNullable(employeesMapper.selectById(emId).getKillOrder()).orElse(0);
            }
            // 若在18小时前取消订单，需记录取消次数
            if (visitTime.isBefore(currentDate) || ChronoUnit.HOURS.between(visitTime, currentDate) <= 18) {
                cancel++;
            }
        }
        // 更新主订单数据
        totalOrder.setEmId(0);
        totalOrder.setSuborderStatus(0);
        if (totalOrderMapper.updateById(totalOrder) < 0) {
            throw new ServiceException("更新主订单失败");
        }
        // 更新子订单
        yypzOrder.setStatus(0);
        if (baseMapper.updateById(yypzOrder) < 0) {
            throw new ServiceException("子订单更新失败");
        }
        // 若取消次数大于3，则冻结用户账号
        if (cancel != null && cancel > 3) {
            if (employeesMapper.update(null,
                Wrappers.<Employees>lambdaUpdate()
                    .set(Employees::getStatus, 2)
                    .set(Employees::getKillOrder, cancel)
                    .eq(Employees::getId, emId)) < 0) {
                throw new ServiceException("用户冻结失败");
            }
        }
        if (cancel != null) {
            RedisUtils.setCacheMapValue(ISonOrderService.ORDER_CANCEL_CACHE_PREFIX, String.valueOf(emId), cancel);
        }
        return true;
    }

    /**
     * 陪诊员预约陪诊开始服务
     *
     * @param totalId 主订单ID
     * @return 操作结果
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean accompanyStartService(Integer totalId) {
        TotalOrder totalOrder = totalOrderMapper.selectById(totalId);
        Objects.requireNonNull(totalOrder, "主订单不存在");
        if (totalOrder.getStatus() != 1 || totalOrder.getEmId() == 0) { // 用户已付款
            throw new ServiceException("主订单不符合开始服务要求");
        }
        YypzOrder suborder = baseMapper.selectOne(Wrappers.<YypzOrder>lambdaQuery().eq(YypzOrder::getOrderId, totalId));
        Objects.requireNonNull(suborder, "子订单不存在");
        if (suborder.getStatus() != 1) { // 订单已接单
            throw new ServiceException("子订单不符合开始服务要求");
        }
        // 操作时间若未到达开始时间，则拒绝该操作
        if (suborder.getVisitTime() != null) {
            LocalDateTime visitTime = LocalDateTime.ofInstant(suborder.getVisitTime().toInstant(), ZoneId.systemDefault());
            LocalDateTime currentDate = LocalDateTime.ofInstant(new Date().toInstant(), ZoneId.systemDefault());
            if (currentDate.isBefore(visitTime)) {
                throw new ServiceException("请在到达陪诊时间后再点击开始服务");
            }
        }
        // 修改子订单状态为开始服务
        suborder.setStatus(6);
        totalOrder.setSuborderStatus(6);
        if (baseMapper.updateById(suborder) < 0) {
            throw new ServiceException("操作失败，子订单异常");
        }
        if (totalOrderMapper.updateById(totalOrder) < 0) {
            throw new ServiceException("操作失败，主订单异常");
        }
        return true;
    }

    /**
     * 陪诊员完成服务 预约陪诊
     *
     * @param orderData 主订单ID
     * @return 操作结果
     */
    @Override
    @Transactional(rollbackFor = Exception.class)
    public boolean finishedService(OrderFinishedBo orderData) {
        TotalOrder totalOrder = totalOrderMapper.selectById(orderData.getOrderId());
        Objects.requireNonNull(totalOrder, "主订单不存在");
        if (totalOrder.getStatus() != 1 || totalOrder.getEmId() == 0) { // 用户已付款
            throw new ServiceException("主订单不符合开始服务要求");
        }
        YypzOrder suborder = baseMapper.selectOne(Wrappers.<YypzOrder>lambdaQuery().eq(YypzOrder::getOrderId, totalOrder.getId()));
        Objects.requireNonNull(suborder, "子订单不存在");
        if (suborder.getStatus() != 6) { // 订单已接单
            throw new ServiceException("子订单不符合开始服务要求");
        }
        // 修改子订单状态为完成服务
        suborder.setStatus(2);
        suborder.setOverTime(new Date());
        suborder.setVoucher(orderData.getVoucher());
        suborder.setRemark(orderData.getRemark());
        totalOrder.setSuborderStatus(2);
        if (baseMapper.updateById(suborder) < 0) {
            throw new ServiceException("操作失败，子订单异常");
        }
        if (totalOrderMapper.updateById(totalOrder) < 0) {
            throw new ServiceException("操作失败，主订单异常");
        }
        // 子订单完成后，24小时后自动将主订单状态修改为完成
        long expirationTime = System.currentTimeMillis() + TimeUnit.MINUTES.toMillis(24);
        TotalOrderDelayOperator task = new TotalOrderDelayOperator(totalOrder.getId(), expirationTime, id -> {
            totalOrderMapper.update(null,
                Wrappers.<TotalOrder>lambdaUpdate().set(TotalOrder::getStatus, 2).eq(TotalOrder::getId, id));
        });
        delayQueue.addOrder(task);
        return true;
    }

    @Override
    public String getFinishTime(Integer totalId) {
        return baseMapper.selectFinishTime(totalId);
    }
}