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.DataPointFreq;
import com.iailab.module.model.mdk.factory.ItemEntityFactory;
import com.iailab.module.model.mdk.sample.dto.ColumnItem;
import com.iailab.module.model.mdk.sample.dto.ColumnItemPort;
import com.iailab.module.model.mdk.sample.dto.SampleInfo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

/**
 * @author PanZhibao
 * @Description
 * @createTime 2024年09月03日
 */
abstract class SampleInfoConstructor {

    @Autowired
    private DataPointApi dataPointApi;

    @Autowired
    private ItemEntityFactory itemEntityFactory;

    /**
     * prepareSampleInfo
     *
     * @param modelId
     * @param predictTime
     * @return
     */
    public SampleInfo prepareSampleInfo(String modelId, Date predictTime) {
        SampleInfo sampleInfo = new SampleInfo();
        //调用样本列数的方法
        sampleInfo.setSampleColumn(getSampleColumn(modelId));
        //样本的列信息
        sampleInfo.setColumnInfo(getColumnInfo(modelId, predictTime));
        //样本的采样周期
        sampleInfo.setSampleCycle(getSampleCycle(modelId));
        return sampleInfo;
    }

    /**
     * 返回样本矩阵的列数
     *
     * @param modelId
     * @return
     */
    protected abstract Integer getSampleColumn(String modelId);

    /**
     * 获取开始时间
     *
     * @param columnItem
     * @param originalTime
     * @return
     * @throws Exception
     */
    protected Date getStartTime(ColumnItem columnItem, Date originalTime) {
        Date dateTime = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(originalTime);
        switch (columnItem.getParamType()) {
            case "DATAPOINT":
                ApiPointDTO dataPoint = dataPointApi.getPointById(columnItem.getParamId());
                if (dataPoint == null) {
                    return null;
                }
                dateTime = calculateTime(originalTime, true, columnItem.getDataLength(), DataPointFreq.getEumByCode(dataPoint.getMinfreqid()).getValue());
                break;
            case "PREDICTITEM":
                dateTime = calendar.getTime();
                break;
            case "IND-HIS":
                dateTime = calculateTime(originalTime, true, columnItem.getDataLength(), 60);
                break;
            case "IND-PLAN":
                dateTime = calendar.getTime();
                break;
            default:
                break;
        }
        return dateTime;
    }

    /**
     * 获取结束时间
     *
     * @param columnItem
     * @param originalTime
     * @return
     * @throws Exception
     */
    protected Date getEndTime(ColumnItem columnItem, Date originalTime) {
        Date dateTime = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(originalTime);
        switch (columnItem.getParamType()) {
            case "DATAPOINT":
                ApiPointDTO dataPoint = dataPointApi.getPointById(columnItem.getParamId());
                if (dataPoint == null) {
                    return null;
                }
                calendar.add(Calendar.SECOND, DataPointFreq.getEumByCode(dataPoint.getMinfreqid()).getValue() * -1);
                break;
            case "PREDICTITEM":
                dateTime = calculateTime(originalTime, false, columnItem.getDataLength(), 60);
                break;
            case "IND-HIS":
                dateTime = calendar.getTime();
                break;
            case "IND-PLAN":
                dateTime = calculateTime(originalTime, false, columnItem.getDataLength(), 60);
                break;
            default:
                break;
        }
        return dateTime;
    }

    /**
     * 获取粒度，s
     *
     * @param columnItem
     * @return
     * @throws Exception
     */
    protected Integer getGranularity(ColumnItem columnItem) {
        Integer granularity = 60;
        switch (columnItem.getParamType()) {
            case "DATAPOINT":
                ApiPointDTO dataPoint = dataPointApi.getPointById(columnItem.getParamId());
                granularity = DataPointFreq.getEumByCode(dataPoint.getMinfreqid()).getValue();
                break;
            case "PREDICTITEM":
                granularity = itemEntityFactory.getItemById(columnItem.getParamId()).getGranularity();
                break;
            case "IND-HIS":
                granularity = 60;
                break;
            case "IND-PLAN":
                granularity = 60;
                break;
            default:
                break;
        }
        return granularity;
    }

    /**
     * 样本的列信息
     *
     * @param modelId
     * @param predictTime
     * @return
     */
    protected abstract List<ColumnItemPort> getColumnInfo(String modelId, Date predictTime);

    /**
     * 样本的采样周期
     *
     * @param modelId
     * @return
     */
    protected abstract Integer getSampleCycle(String modelId);

    /**
     * 计算取值的时间
     *
     * @param originalTime
     * @param backward
     * @param dataLength
     * @param granularity
     * @return
     */
    public Date calculateTime(Date originalTime, Boolean backward, int dataLength, int granularity) {
        int timeLength;
        if (backward) {
            timeLength = (-1) * dataLength;
        } else {
            timeLength = dataLength - 1;
        }
        Date desTime = originalTime;
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(desTime);
        calendar.set(Calendar.MILLISECOND, 0);
        // 数据长度 * 粒度
        calendar.add(Calendar.SECOND, timeLength * granularity);
        return calendar.getTime();
    }
}