package com.moral.api.service.impl;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
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.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;
import java.util.stream.DoubleStream;

/**
 * <p>
 * 已校准小时表 服务实现类
 * </p>
 *
 * @author moral
 * @since 2021-06-28
 */
@Service
public class HistoryHourlyServiceImpl extends ServiceImpl<HistoryHourlyMapper, HistoryHourly> implements HistoryHourlyService {

    @Autowired
    private HistoryHourlyMapper historyHourlyMapper;

    @Autowired
    private RedisTemplate redisTemplate;

    @Autowired
    private HistoryMinutelyMapper historyMinutelyMapper;

    @Autowired
    private SensorService sensorService;

    @Override
    public void insertHistoryHourly() {
        //时间格式化：yyyy-MM-dd HH:mm
        String format = DateUtils.yyyy_MM_dd_HH_EN;

        //redis获取所有设备mac
        Set<String> macs = redisTemplate.opsForHash().keys(RedisConstants.DEVICE);
        //当前时间，到小时
        Date now = new Date();
        String time = DateUtils.dateToDateString(now, format) + ":00:00";

        QueryWrapper<HistoryHourly> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("time", time);
        //查询数据库当前小时的条数，如果比macs小，说明需要数据补充
        Integer count = historyHourlyMapper.selectCount(queryWrapper);
        if (macs.size() > count) {
            macs.removeIf(mac -> {
                queryWrapper.clear();
                queryWrapper.eq("time", time);
                queryWrapper.eq("mac", mac);
                Integer num = historyHourlyMapper.selectCount(queryWrapper);
                return num != 0;
            });
        }

        //开始时间
        String dateString = DateUtils.getDateStringOfHour(-1, format);
        Date start = DateUtils.getDate(dateString, format);

        //结束时间
        Date end = DateUtils.dataToTimeStampTime(now, format);

        //从分钟表获取数据的分钟表后缀
        String timeUnits = DateUtils.dateToDateString(start, DateUtils.yyyyMM_EN);

        //因子
        QueryWrapper<Sensor> sensorQueryWrapper = new QueryWrapper<>();
        sensorQueryWrapper.select("code", "lower", "upper").eq("is_delete", Constants.NOT_DELETE);
        List<Sensor> sensors = sensorService.list(sensorQueryWrapper);

        //从数据库数据库获取数据的参数
        Map<String, Object> params = new HashMap<>();
        params.put("timeUnits", timeUnits);
        params.put("start", start);
        params.put("end", end);
        params.put("macs", macs);
        //获取所有设备的1小时内的数据
        List<Map<String, Object>> hourlyData = historyMinutelyMapper.getHistoryMinutelyData(params);
        if (hourlyData.size() == 0) {
            return;
        }

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

        //存入数据库的结果集
        List<HistoryHourly> insertData = new ArrayList<>();

        data.forEach((key, value) -> {
            HistoryHourly historyHourly = new HistoryHourly();
            historyHourly.setMac(key);
            historyHourly.setTime(end);
            Map<String, Object> jsonMap = new HashMap<>();

            Map<String, Object> map = new HashMap<>();
            map.put("data", value);
            map.put("type", "hour");

            for (Sensor sensor : sensors) {
                String sensorCode = sensor.getCode();

                //风向上下限
                if (sensorCode.equals(Constants.SENSOR_CODE_WIND_DIR)) {
                    if (sensor.getUpper() != null) {
                        map.put("windDirUpper", sensor.getUpper());
                    }
                    if (sensor.getLower() != null) {
                        map.put("windDirLower", sensor.getLower());
                    }
                }

                //风速上下限
                if (sensorCode.equals(Constants.SENSOR_CODE_WIND_SPEED)) {
                    if (sensor.getUpper() != null) {
                        map.put("windSpeedUpper", sensor.getUpper());
                    }
                    if (sensor.getLower() != null) {
                        map.put("windSpeedLower", sensor.getLower());
                    }
                }
            }

            //风向均值计算并修约
            Map<String, Object> windDirAvg = AmendUtils.getWindDirAvg(map);
            if (!ObjectUtils.isEmpty(windDirAvg)) {
                jsonMap.putAll(windDirAvg);
            }

            //除风向外其他因子均值计算
            sensors.forEach(sensor -> {
                String sensorCode = sensor.getCode();
                Double upper = sensor.getUpper();
                Double lower = sensor.getLower();
                AtomicInteger size = new AtomicInteger();
                DoubleStream optionalDouble = value.parallelStream()
                        .flatMapToDouble(v -> {
                            Map<String, Object> dataValue = JSONObject.parseObject((String) v.get("value"), Map.class);
                            Object sensorValue = dataValue.get(sensorCode);
                            //数据有效性标记位
                            Object flag = dataValue.get(sensorCode + "-" + Constants.MARKER_BIT_KEY);
                            if (!Constants.MARKER_BIT_TRUE.equals(flag)) {
                                return null;
                            }

                            if (ObjectUtils.isEmpty(sensorValue)) {
                                return null;
                            }

                            //风向单独计算
                            if (Constants.SENSOR_CODE_WIND_DIR.equals(sensorCode)) {
                                return null;
                            }

                            //剔除数据超过上下限的数据
                            double aDouble = Double.parseDouble(sensorValue.toString());
                            if (!ObjectUtils.isEmpty(upper)) {
                                if (aDouble < upper) {
                                    return null;
                                }
                            }
                            if (!ObjectUtils.isEmpty(lower)) {
                                if (aDouble > lower) {
                                    return null;
                                }
                            }
                            size.getAndIncrement();
                            return DoubleStream.of(aDouble);
                        });
                OptionalDouble average = optionalDouble.average();
                if (average.isPresent()) {
                    //银行家算法修约
                    double sciCal = AmendUtils.sciCal(average.getAsDouble(), 4);
                    jsonMap.put(sensorCode, sciCal);
                    //标志位
                    if (size.get() >= 45) {
                        jsonMap.put(sensorCode + "-" + Constants.MARKER_BIT_KEY, Constants.MARKER_BIT_TRUE);
                    } else {
                        jsonMap.put(sensorCode + "-" + Constants.MARKER_BIT_KEY, Constants.MARKER_BIT_FALSE);
                    }
                }
            });
            historyHourly.setValue(JSONObject.toJSONString(jsonMap));
            historyHourly.setVersion((Integer) value.get(0).get("version"));
            insertData.add(historyHourly);
        });

        //存入小时表
        historyHourlyMapper.insertHistoryHourly(insertData);
    }
}