package com.moral.api.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.HistoryDaily;
import com.moral.api.entity.HistoryHourly;
import com.moral.api.entity.Sensor;
import com.moral.api.mapper.HistoryDailyMapper;
import com.moral.api.service.HistoryDailyService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.moral.api.service.HistoryHourlyService;
import com.moral.api.service.SensorService;
import com.moral.constant.Constants;
import com.moral.util.AmendUtils;
import com.moral.util.DateUtils;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.ObjectUtils;

import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.OptionalDouble;
import java.util.stream.Collectors;
import java.util.stream.DoubleStream;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author moral
 * @since 2021-06-11
 */
@Service
public class HistoryDailyServiceImpl extends ServiceImpl<HistoryDailyMapper, HistoryDaily> implements HistoryDailyService {

    @Autowired
    private HistoryDailyMapper historyDailyMapper;

    @Autowired
    private SensorService sensorService;

    @Autowired
    private HistoryHourlyService historyHourlyService;

    @Override
    @Transactional
    public void insertHistoryDaily() {
        String format = DateUtils.yyyy_MM_dd_EN;
        Date now = new Date();
        //开始时间，昨日
        Date start = DateUtils.dataToTimeStampTime(DateUtils.getDateOfDay(now, -1), format);
        //结束时间，今日
        Date end = DateUtils.dataToTimeStampTime(now, format);
        //因子
        QueryWrapper<Sensor> sensorQueryWrapper = new QueryWrapper<>();
        sensorQueryWrapper.select("code").eq("is_delete", Constants.NOT_DELETE);
        List<Object> sensorCodes = sensorService.listObjs(sensorQueryWrapper);

        //获取所有设备小时数据
        QueryWrapper<HistoryHourly> historyHourlyQueryWrapper = new QueryWrapper<>();
        historyHourlyQueryWrapper.ge("time", DateUtils.dateToDateString(start)).le("time", DateUtils.dateToDateString(end));
        List<Map<String, Object>> dailyData = historyHourlyService.listMaps(historyHourlyQueryWrapper);
        if (dailyData.size() == 0) {
            return;
        }

        //按mac分组
        Map<String, List<Map<String, Object>>> data = dailyData.parallelStream().collect(Collectors.groupingBy(o -> (String) o.get("mac")));

        //存入数据库的结果集
        List<Map<String, Object>> insertData = new ArrayList<>();

        data.forEach((key, value) -> {
            Map<String, Object> dataMap = new HashMap<>();
            Map<String, Object> jsonMap = new HashMap<>();
            dataMap.put("mac", key);
            dataMap.put("time", start);

            //中间变量，用于计算除臭氧外其它因子
            List<Map<String, Object>> tempValue = new ArrayList<>(value);

            value.removeIf(map -> ((Date) map.get("time")).getTime() == start.getTime());
            //臭氧8小时滑动平均值计算并修约
            Object o3AvgOfDay = AmendUtils.getO3AvgOfDay(value);
            if (o3AvgOfDay != null) {
                jsonMap.put(Constants.SENSOR_CODE_O3, o3AvgOfDay);
            }
            //除臭氧外其他因子均值计算
            tempValue.removeIf(map -> ((Date) map.get("time")).getTime() == end.getTime());

            //风向均值计算并修约
            Object windDirAvg = AmendUtils.getWindDirAvg(value);
            if (windDirAvg != null) {
                jsonMap.put(Constants.SENSOR_CODE_WIND_DIR, windDirAvg);
            }

            sensorCodes.forEach(sensorCode -> {
                OptionalDouble optionalDouble = tempValue.parallelStream()
                        .flatMapToDouble(v -> {
                            Map<String, Object> dataValue = JSONObject.parseObject((String) v.get("value"), Map.class);
                            Object sensorValue = dataValue.get(sensorCode.toString());
                            if (ObjectUtils.isEmpty(sensorValue)) {
                                return null;
                            }
                            if (sensorCode.equals(Constants.SENSOR_CODE_O3)) {
                                return null;
                            }
                            return DoubleStream.of(Double.parseDouble(sensorValue.toString()));
                        }).average();
                if (optionalDouble.isPresent()) {
                    //银行家算法修约
                    double sciCal = AmendUtils.sciCal(optionalDouble.getAsDouble(), 4);
                    jsonMap.put(sensorCode.toString(), sciCal);
                }
            });
            dataMap.put("value", JSONObject.toJSONString(jsonMap));
            insertData.add(dataMap);
        });

        //存入数据库
        historyDailyMapper.insertHistoryDaily(insertData);
    }
}