package com.moral.api.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
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;

import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.Sensor;
import com.moral.api.mapper.HistoryFiveMinutelyMapper;
import com.moral.api.mapper.HistoryMinutelyMapper;
import com.moral.api.service.HistoryFiveMinutelyService;
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;

@Service
public class HistoryFiveMinutelyServiceImpl implements HistoryFiveMinutelyService {

    @Autowired
    private HistoryFiveMinutelyMapper historyFiveMinutelyMapper;

    @Autowired
    private HistoryMinutelyMapper historyMinutelyMapper;

    @Autowired
    private SensorService sensorService;

    @Autowired
    private RedisTemplate redisTemplate;

    @Override
    public void createTable(String timeUnits) {
        historyFiveMinutelyMapper.createTable(timeUnits);
    }

    @Override
    @Transactional
    public void insertHistoryFiveMinutely() {
        //时间格式化：yyyy-MM-dd HH:mm
        String format = DateUtils.yyyy_MM_dd_HH_mm_EN;
        Date now = new Date();
        Map<String, Object> params = new HashMap<>();
        //开始时间
        Date start = DateUtils.dataToTimeStampTime(DateUtils.getDateOfMin(now, -5), format);
        //结束时间
        Date end = DateUtils.dataToTimeStampTime(now, format);
        params.put("start", start);
        params.put("end", end);
        //获取数据的分钟表后缀
        String timeUnits = DateUtils.dateToDateString(start, DateUtils.yyyyMM_EN);
        params.put("timeUnits", timeUnits);

        //因子
        QueryWrapper<Sensor> queryWrapper = new QueryWrapper<>();
        queryWrapper.select("code").eq("is_delete", Constants.NOT_DELETE);
        List<Object> sensorCodes = sensorService.listObjs(queryWrapper);

        //获取所有设备的5分钟内的数据
        List<Map<String, Object>> fiveMinutelyData = historyMinutelyMapper.getHistoryMinutelyData(params);
        if (fiveMinutelyData.size() == 0) {
            return;
        }

        //按mac分组
        Map<String, List<Map<String, Object>>> data = fiveMinutelyData.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<>();
            dataMap.put("mac", key);
            dataMap.put("time", end);
            Map<String, Object> jsonMap = new HashMap<>();

            //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);
            }

            //除风向外其他因子均值计算
            sensorCodes.forEach(sensorCode -> {
                OptionalDouble optionalDouble = value.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;
                            }
                            //风向另外计算
                            if (Constants.SENSOR_CODE_WIND_DIR.equals(sensorCode)) {
                                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));
            //存入redis
            redisTemplate.opsForHash().put(RedisConstants.DATA_FIVE_MINUTES, key, jsonMap);
            insertData.add(dataMap);
        });

        //5分钟表后缀
        String insertTimeUnits = DateUtils.dateToDateString(now, DateUtils.yyyyMM_EN);
        //存入数据库
        historyFiveMinutelyMapper.insertHistoryFiveMinutely(insertData, insertTimeUnits);
    }
}