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package com.iailab.module.model.mdk.sample;
 
import com.iailab.module.data.api.point.DataPointApi;
import com.iailab.module.data.api.point.dto.ApiPointDTO;
import com.iailab.module.data.enums.DataPointFreqEnum;
import com.iailab.module.model.mdk.common.enums.ModelParamType;
import com.iailab.module.model.mdk.sample.dto.SampleData;
import com.iailab.module.model.mdk.sample.dto.SampleInfo;
import com.iailab.module.model.mdk.vo.DataValueVO;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.CollectionUtils;
 
import java.sql.Timestamp;
import java.util.*;
 
abstract class SampleDataConstructor {
 
    private Logger logger = LoggerFactory.getLogger(getClass());
 
    @Autowired
    private DataPointApi dataPointApi;
 
    /**
     * prepareSampleData
     *
     * @param sampleInfo
     * @return
     */
    public abstract List<SampleData> prepareSampleData(SampleInfo sampleInfo);
 
    /**
     * 补全数据
     *
     * @param length
     * @param dataEntityList
     * @param startTime
     * @param endTime
     * @return
     */
    public List<DataValueVO> completionData(int length, List<DataValueVO> dataEntityList, Date startTime, Date endTime,
                                            String paramId, String paramType) {
        if (CollectionUtils.isEmpty(dataEntityList) || length == dataEntityList.size()) {
            return dataEntityList;
        } else if (length < dataEntityList.size()) {
            return dataEntityList.subList(dataEntityList.size() - length, dataEntityList.size());
        }
 
        List<DataValueVO> completionDataEntityList = new ArrayList<>();
        long oneMin = 0L;
 
        long start = startTime.getTime();
        long end = endTime.getTime();
        long mins = 0L;
 
        switch (ModelParamType.getEumByCode(paramType)) {
            case NORMALITEM:
            case MERGEITEM:
                // 预测值
                Calendar calendar = Calendar.getInstance();
                calendar.setTime(startTime);
                calendar.set(Calendar.HOUR_OF_DAY, 0);
                calendar.set(Calendar.MINUTE, 0);
                calendar.set(Calendar.SECOND, 0);
                calendar.add(Calendar.DAY_OF_YEAR, 1);
                startTime = calendar.getTime();
                start = startTime.getTime();
 
                calendar.setTime(endTime);
                calendar.set(Calendar.HOUR_OF_DAY, 0);
                calendar.set(Calendar.MINUTE, 0);
                calendar.set(Calendar.SECOND, 0);
                endTime = calendar.getTime();
                end = endTime.getTime();
 
                oneMin = 24 * 60 * 60 * 1000;
                mins = ((end - start) / oneMin);
                break;
            case DATAPOINT:
                // 测点值
                ApiPointDTO dataPoint = dataPointApi.getInfoById(paramId);
                oneMin = 1000L * DataPointFreqEnum.getEumByCode(dataPoint.getMinfreqid()).getValue();
                // 设置时间偏移量
                start = start - (start % oneMin) + oneMin;
                end = end - (end % oneMin) + oneMin;
                mins = ((end - start) / oneMin);
                break;
            case IND:
                // 指标数据
                oneMin = 24 * 60 * 60 * 1000;
                Calendar calendar2 = Calendar.getInstance();
                calendar2.setTime(startTime);
                calendar2.set(Calendar.HOUR_OF_DAY, 0);
                calendar2.set(Calendar.MINUTE, 0);
                calendar2.set(Calendar.SECOND, 0);
                start = calendar2.getTime().getTime();
 
                calendar2.setTime(endTime);
                calendar2.set(Calendar.HOUR_OF_DAY, 0);
                calendar2.set(Calendar.MINUTE, 0);
                calendar2.set(Calendar.SECOND, 0);
                end = calendar2.getTime().getTime();
                mins = ((end - start) / oneMin);
                break;
            default:
                break;
        }
        Map<Long, Double> sourceDataMap = new HashMap<>(dataEntityList.size());
        for (DataValueVO dataEntity : dataEntityList) {
            sourceDataMap.put(dataEntity.getDataTime().getTime(), dataEntity.getDataValue());
        }
 
        //找出缺少项
        Map<Long, Double> dataMap = new LinkedHashMap<>();
        for (int i = 0; i < mins; i++) {
            Long key = start + oneMin * i;
            Double value = sourceDataMap.get(key);
            dataMap.put(key, value);
        }
 
        //补充缺少项
        int k = 0;
        Map.Entry<Long, Double> lastItem = null;
        for (Map.Entry<Long, Double> item : dataMap.entrySet()) {
            if (k == 0 && item.getValue() == null) {
                item.setValue(getFirstValue(dataMap));
            } else if (item.getValue() == null) {
                item.setValue(lastItem.getValue());
            }
            k++;
            lastItem = item;
 
            DataValueVO dataEntity = new DataValueVO();
            dataEntity.setDataTime(new Date(item.getKey()));
            dataEntity.setDataValue(item.getValue());
            completionDataEntityList.add(dataEntity);
        }
        return completionDataEntityList;
    }
 
    /**
     * getFirstValue
     *
     * @param dataMap
     * @return
     */
    private Double getFirstValue(Map<Long, Double> dataMap) {
        for (Map.Entry<Long, Double> item : dataMap.entrySet()) {
            if (item.getValue() != null) {
                return item.getValue();
            }
        }
        return null;
    }
 
}