package com.moral.api.service.impl;

import com.alibaba.fastjson.JSON;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.CityAqiDaily;
import com.moral.api.mapper.CityAqiDailyMapper;
import com.moral.api.pojo.dto.cityAQI.MonthlyPollutionLevel;
import com.moral.api.pojo.dto.cityAQI.PollutionDaysAndProportion;
import com.moral.api.pojo.vo.cityAQI.PieChartOfPollutionLevelVO;
import com.moral.api.pojo.form.aqi.QueryChartOfPollutionLevelForm;
import com.moral.api.service.CityAqiDailyService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.moral.constant.Constants;
import com.moral.util.AQIUtils;
import com.moral.util.DateUtils;
import com.moral.util.MathUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;

import java.text.SimpleDateFormat;
import java.util.*;

/**
 * <p>
 * 城市aqi日数据表 服务实现类
 * </p>
 *
 * @author moral
 * @since 2021-11-01
 */
@Service
public class CityAqiDailyServiceImpl extends ServiceImpl<CityAqiDailyMapper, CityAqiDaily> implements CityAqiDailyService {

    @Autowired
    CityAqiDailyMapper cityAqiDailyMapper;

    @Override
    public PieChartOfPollutionLevelVO queryPieChartOfPollutionLevels(QueryChartOfPollutionLevelForm form) {
        //取参
        Integer regionCode = form.getRegionCode();
        Date startDate = form.getStartDate();
        Date endDate = form.getEndDate();
        //查询数据
        QueryWrapper<CityAqiDaily> wrapper = new QueryWrapper<>();
        wrapper.eq("city_code", regionCode);
        wrapper.between("time", startDate, endDate);
        List<CityAqiDaily> cityAqiDailies = cityAqiDailyMapper.selectList(wrapper);
        //取开始结束时间,拼装返回time
        if (cityAqiDailies.size() == 0)
            return null;
        String startTime = DateUtils.dateToDateString(cityAqiDailies.get(0).getTime(), "yyyy-MM-dd");
        String endTime = DateUtils.dateToDateString(cityAqiDailies.get(cityAqiDailies.size() - 1).getTime(), "yyyy-MM-dd");
        String time = startTime + " 至 " + endTime;
        //如果数据的时间有重复则去重
        Map<String, CityAqiDaily> tmpMap = new HashMap<>();
        for (CityAqiDaily cityAqiDaily : cityAqiDailies) {
            String tmpTime = DateUtils.dateToDateString(cityAqiDaily.getTime(), "yyyy-MM-dd");
            tmpMap.put(tmpTime, cityAqiDaily);
        }
        cityAqiDailies = new ArrayList<CityAqiDaily>(tmpMap.values());
        //统计各污染等级的天数
        Map<String, Integer> pollutionDaysMap = new LinkedHashMap<>();
        pollutionDaysMap.put(Constants.EXCELLENT_WEATHER_CODE, 0);
        pollutionDaysMap.put(Constants.GOOD_WEATHER_CODE, 0);
        pollutionDaysMap.put(Constants.MILD_WEATHER_CODE, 0);
        pollutionDaysMap.put(Constants.MIDDLE_WEATHER_CODE, 0);
        pollutionDaysMap.put(Constants.SERIOUS_WEATHER_CODE, 0);
        pollutionDaysMap.put(Constants.SERVER_WEATHER_CODE, 0);
        for (CityAqiDaily cityAqiDaily : cityAqiDailies) {
            Map<String, Object> valueMap = JSON.parseObject(cityAqiDaily.getValue(), Map.class);
            if (valueMap.get("AQI") == null)
                continue;
            Integer aqi = Integer.valueOf(valueMap.get("AQI").toString());
            //计算AQI污染等级
            String pollutionClass = AQIUtils.classCodeOfPollutionByAqi(aqi);
            Integer days = pollutionDaysMap.get(pollutionClass);
            pollutionDaysMap.put(pollutionClass, days + 1);
        }
        //计算比例
        List<Map<String, Object>> valueMap = new ArrayList<>();
        Set<Map.Entry<String, Integer>> entries = pollutionDaysMap.entrySet();
        Iterator<Map.Entry<String, Integer>> iterator = entries.iterator();
        Integer totalDays = 0;
        while (iterator.hasNext()) {
            Map.Entry<String, Integer> entry = iterator.next();
            Map<String, Object> pollutionMap = new HashMap<>();
            String pollution = entry.getKey();
            Integer days = entry.getValue();
            Double proportionTmp = MathUtils.division(Double.valueOf(days), Double.valueOf(cityAqiDailies.size()), 3);
            Double proportionD = MathUtils.mul(proportionTmp, 100);
            String proportion = proportionD.toString() + "%";
            pollutionMap.put("proportion", proportion);
            pollutionMap.put("pollution", pollution);
            pollutionMap.put("days", days);
            valueMap.add(pollutionMap);
            totalDays += days;
        }
        //封装返回对象
        PieChartOfPollutionLevelVO VO = new PieChartOfPollutionLevelVO();
        VO.setTime(time);
        VO.setValues(valueMap);
        VO.setTotalDays(totalDays);
        return VO;
    }

    @Override
    public List<MonthlyPollutionLevel> queryBarChartOfPollutionLevels(QueryChartOfPollutionLevelForm form) {
        //取参
        Integer regionCode = form.getRegionCode();
        Date startDate = form.getStartDate();
        Date endDate = form.getEndDate();
        //查询数据
        QueryWrapper<CityAqiDaily> wrapper = new QueryWrapper<>();
        wrapper.eq("city_code", regionCode);
        wrapper.between("time", startDate, endDate);
        wrapper.orderByAsc("time");
        List<CityAqiDaily> cityAqiDailies = cityAqiDailyMapper.selectList(wrapper);
        //如果数据的时间有重复则去重
        Map<String, CityAqiDaily> tmpMap = new LinkedHashMap<>();
        for (CityAqiDaily cityAqiDaily : cityAqiDailies) {
            String tmpTime = DateUtils.dateToDateString(cityAqiDaily.getTime(), "yyyy-MM-dd");
            tmpMap.put(tmpTime, cityAqiDaily);
        }
        cityAqiDailies = new ArrayList<CityAqiDaily>(tmpMap.values());
        //按照月份对数据进行分类
        Map<String, List<CityAqiDaily>> monthlyDataMap = new LinkedHashMap<>();
        cityAqiDailies.forEach(value -> {
            String month = DateUtils.dateToDateString(value.getTime(), "yyyy-MM");
            List<CityAqiDaily> dataList = monthlyDataMap.get(month);
            if (ObjectUtils.isEmpty(dataList))
                dataList = new ArrayList<>();
            dataList.add(value);
            monthlyDataMap.put(month, dataList);
        });
        //计算污染天数和比例
        List<MonthlyPollutionLevel> monthlyPollutionLevels = new ArrayList<>();
        Set<Map.Entry<String, List<CityAqiDaily>>> monthlyEntries = monthlyDataMap.entrySet();
        Iterator<Map.Entry<String, List<CityAqiDaily>>> monthlyIterator = monthlyEntries.iterator();
        while(monthlyIterator.hasNext()){
            Map.Entry<String, List<CityAqiDaily>> monthlyEntry = monthlyIterator.next();
            List<CityAqiDaily> monthlyValues = monthlyEntry.getValue();
            //用于统计各个污染等级的天数
            Map<String, Integer> pollutionDaysMap = new LinkedHashMap<>();
            pollutionDaysMap.put(Constants.EXCELLENT_WEATHER_CODE, 0);
            pollutionDaysMap.put(Constants.GOOD_WEATHER_CODE, 0);
            pollutionDaysMap.put(Constants.MILD_WEATHER_CODE, 0);
            pollutionDaysMap.put(Constants.MIDDLE_WEATHER_CODE, 0);
            pollutionDaysMap.put(Constants.SERIOUS_WEATHER_CODE, 0);
            pollutionDaysMap.put(Constants.SERVER_WEATHER_CODE, 0);
            for (CityAqiDaily cityAqiDaily : monthlyValues) {
                Map<String, Object> valueMap = JSON.parseObject(cityAqiDaily.getValue(), Map.class);
                if (valueMap.get("AQI") == null)
                    continue;
                Integer aqi = Integer.valueOf(valueMap.get("AQI").toString());
                //计算AQI污染等级
                String pollutionClass = AQIUtils.classCodeOfPollutionByAqi(aqi);
                Integer days = pollutionDaysMap.get(pollutionClass);
                pollutionDaysMap.put(pollutionClass, days + 1);
            }

            //计算比例
            List<PollutionDaysAndProportion> pollutionDaysAndProportions = new ArrayList<>();
            Set<Map.Entry<String, Integer>> entries = pollutionDaysMap.entrySet();
            Iterator<Map.Entry<String, Integer>> iterator = entries.iterator();
            while (iterator.hasNext()) {
                Map.Entry<String, Integer> entry = iterator.next();
                String pollution = entry.getKey();
                Integer days = entry.getValue();
                Double proportionTmp = MathUtils.division(Double.valueOf(days), Double.valueOf(monthlyValues.size()), 3);
                Double proportionD = MathUtils.mul(proportionTmp, 100);
                String proportion = proportionD.toString() + "%";
                PollutionDaysAndProportion pollutionDaysAndProportion = new PollutionDaysAndProportion();
                pollutionDaysAndProportion.setDays(days);
                pollutionDaysAndProportion.setPollutionLevel(pollution);
                pollutionDaysAndProportion.setProportion(proportion);
                pollutionDaysAndProportions.add(pollutionDaysAndProportion);
            }
            //封装返回对象
            MonthlyPollutionLevel monthlyPollutionLevel = new MonthlyPollutionLevel();
            monthlyPollutionLevel.setPollutionDaysAndProportions(pollutionDaysAndProportions);
            monthlyPollutionLevel.setTime(monthlyEntry.getKey());
            monthlyPollutionLevels.add(monthlyPollutionLevel);
        }
        return monthlyPollutionLevels;
    }


}