package com.ruoyi.system.service.impl;

import com.alibaba.fastjson2.JSONArray;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.ruoyi.system.model.ProjectInfo;
import com.ruoyi.system.mapper.ProjectInfoMapper;
import com.ruoyi.system.model.Record;
import com.ruoyi.system.service.ProjectInfoService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.system.service.RecordService;
import com.ruoyi.system.vo.ProjectHiddenDangerTrendVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;
import java.util.List;
import java.util.Map;

import static java.util.stream.Collectors.groupingBy;

/**
 * <p>
 *  服务实现类
 * </p>
 *
 * @author l
 * @since 2026-01-12
 */
@Service
public class ProjectInfoServiceImpl extends ServiceImpl<ProjectInfoMapper, ProjectInfo> implements ProjectInfoService {


    @Override
    public List<ProjectHiddenDangerTrendVo> getProjectHiddenDangerTrend(Integer projectId) {
        // 获取上月第一天的时间
        LocalDate lastMonth = LocalDate.now().minusMonths(1).with(TemporalAdjusters.firstDayOfMonth());
        List<Record> list = this.baseMapper.getProjectHiddenDangerTrend(projectId,lastMonth+" 00:00:00",LocalDate.now()+" 23:59:59");
        for (Record record : list) {
            String hierarchyNames = record.getHierarchyNames();
            JSONArray jsonArray = JSONArray.parseArray(hierarchyNames);
            // 取出倒数第4个
            String name = jsonArray.getString(jsonArray.size()-4);
            record.setHierarchyName( name);
        }


        LocalDate thisMonth = LocalDate.now().minusMonths(0).with(TemporalAdjusters.firstDayOfMonth());
        Map<String, List<Record>> map = list.stream().collect(groupingBy(Record::getHierarchyName));
        List<ProjectHiddenDangerTrendVo> collect = map.entrySet().stream().map(entry -> {
            ProjectHiddenDangerTrendVo vo = new ProjectHiddenDangerTrendVo();
            vo.setName(entry.getKey());
            List<Record> value = entry.getValue();
            long count = value.stream().filter(record -> record.getCreateTime().isAfter(thisMonth.atStartOfDay())).count();
            // 根据value集合中的createTime 选出本月的数据
            vo.setThisMonth((int) count);
            vo.setLastMonth(value.size()-(int) count);

            int num = vo.getThisMonth() - vo.getLastMonth();
            if (num != 0) {
                if(vo.getLastMonth()>0){
                    String rate = BigDecimal.valueOf(num).divide(BigDecimal.valueOf(vo.getLastMonth()), 4, RoundingMode.HALF_UP).multiply(BigDecimal.valueOf(100)).setScale(2, RoundingMode.HALF_UP).toString();
                    vo.setRate(rate);
                }else {
                    vo.setRate("100.00");
                }
            }else {
                vo.setRate("0.00");
            }
            return vo;
        }).toList();


        return collect;
    }

    public static void main(String[] args) {
        LocalDate lastMonth = LocalDate.now().minusMonths(0).with(TemporalAdjusters.firstDayOfMonth());
        System.out.println(lastMonth+" 23:59:59");
    }
}