package com.moral.api.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.CityAqi;
import com.moral.api.entity.CityAqiDaily;
import com.moral.api.mapper.CityAqiDailyMapper;
import com.moral.api.service.CityAqiDailyService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.moral.api.service.CityAqiService;
import com.moral.util.AmendUtils;
import com.moral.util.ComprehensiveIndexUtils;
import com.moral.util.DateUtils;

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

import java.util.Arrays;
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>
 * 城市aqi日数据表 服务实现类
 * </p>
 *
 * @author moral
 * @since 2021-10-28
 */
@Service
public class CityAqiDailyServiceImpl extends ServiceImpl<CityAqiDailyMapper, CityAqiDaily> implements CityAqiDailyService {

    @Autowired
    private CityAqiDailyMapper cityAqiDailyMapper;

    @Autowired
    private CityAqiService cityAqiService;

    @Override
    public void insertCityAqiDaily() {
        List<String> sensors = Arrays.asList("pm2_5", "pm10", "so2", "no2", "co", "o3", "aqi");
        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);
        //获取所有城市aqi小时数据
        QueryWrapper<CityAqi> wrapper = new QueryWrapper<>();
        wrapper.select("city_code", "time", "value")
                .ge("time", DateUtils.dateToDateString(start))
                .lt("time", DateUtils.dateToDateString(end));
        List<Map<String, Object>> dailyData = cityAqiService.listMaps(wrapper);

        if (dailyData.size() == 0) {
            return;
        }
        //按city_code分组
        Map<String, List<Map<String, Object>>> data = dailyData.parallelStream().collect(Collectors.groupingBy(o -> o.get("city_code").toString()));

        data.forEach((cityCode, value) -> {
            Map<String, Object> jsonMap = new HashMap<>();
            CityAqiDaily cityAqiDaily = new CityAqiDaily();
            cityAqiDaily.setCityCode(Integer.parseInt(cityCode));
            cityAqiDaily.setTime(start);

            //臭氧采用滑动值算法
            Double o3OfDay = AmendUtils.o3OfDay(value);
            if (o3OfDay != null) {
                jsonMap.put("o3", o3OfDay);
            }

            sensors.forEach(sensor -> {
                OptionalDouble optionalDouble = value.parallelStream().flatMapToDouble(v -> {
                    Map<String, Object> dataValue = JSONObject.parseObject((String) v.get("value"), Map.class);
                    //臭氧单独计算
                    if ("o3".equals(sensor)) {
                        return null;
                    }

                    Object sensorValue = dataValue.get(sensor);
                    if (ObjectUtils.isEmpty(sensorValue)) {
                        return null;
                    }
                    double aDouble = Double.parseDouble(sensorValue.toString());
                    return DoubleStream.of(aDouble);
                }).average();
                if (optionalDouble.isPresent()) {
                    //银行家算法修约
                    double sciCal;
                    if ("co".equals(sensor)) {
                        sciCal = AmendUtils.sciCal(optionalDouble.getAsDouble(), 1);
                    } else {
                        sciCal = AmendUtils.sciCal(optionalDouble.getAsDouble(), 0);
                    }
                    jsonMap.put(sensor, sciCal);
                }
            });

            //日综合指数计算
            Double compositeIndex = ComprehensiveIndexUtils.dailyData(jsonMap);
            jsonMap.put("compositeIndex", compositeIndex);

            cityAqiDaily.setValue(JSONObject.toJSONString(jsonMap));
            cityAqiDailyMapper.insert(cityAqiDaily);
        });
    }
}