package com.iailab.module.model.mdk.predict.impl;

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.ItemPredictStatus;
import com.iailab.module.model.mdk.common.exceptions.ItemInvokeException;
import com.iailab.module.model.mdk.factory.ItemEntityFactory;
import com.iailab.module.model.mdk.factory.PredictItemFactory;
import com.iailab.module.model.mdk.predict.PredictItemHandler;
import com.iailab.module.model.mdk.predict.PredictResultHandler;
import com.iailab.module.model.mdk.vo.DataValueVO;
import com.iailab.module.model.mdk.vo.ItemVO;
import com.iailab.module.model.mdk.vo.MmItemOutputVO;
import com.iailab.module.model.mdk.vo.PredictResultVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.sql.Timestamp;
import java.util.*;

/**
 * @author PanZhibao
 * @Description
 * @createTime 2024年09月01日
 */
@Slf4j
@Component
public class PredictItemMergeHandlerImpl implements PredictItemHandler {

    @Autowired
    private ItemEntityFactory itemEntityFactory;

    @Autowired
    private DataPointApi dataPointApi;

    @Autowired
    private PredictItemFactory predictItemFactory;

    @Autowired
    private PredictResultHandler predictResultHandler;

    /**
     * MergeItem预测
     *
     * @param predictTime
     * @param predictItemDto
     * @return
     * @throws ItemInvokeException
     */
    @Override
    public PredictResultVO predict(Date predictTime, ItemVO predictItemDto)
            throws ItemInvokeException {
        PredictResultVO predictResult = new PredictResultVO();
        ItemPredictStatus itemStatus = ItemPredictStatus.PREDICTING;
        String itemId = predictItemDto.getId();
        try {
            String expression = itemEntityFactory.getMergeItem(itemId).getExpression();
            int predictLength = itemEntityFactory.getItemById(itemId).getPredictLength();
            double[][] predictResultMat = new double[predictLength][1];
            Map<String, List<DataValueVO>> predictValueMap = new HashMap<>();
            String[] mathItem = expression.split("[\\+ \\-]");
            ArrayList<Character> operator = new ArrayList<>();
            for (int i = 0; i < expression.length(); i++) {
                if (expression.charAt(i)=='+' || expression.charAt(i)=='-'){
                    operator.add(expression.charAt(i));
                }
            }
            String[] compositionItem = expression.split(String.valueOf("&".toCharArray()));
            //是否为计算预测项
            if (mathItem.length > 1) {
                for (String itemNo : mathItem) {
                    if (itemNo.length() > 4) {
                        Date endTime = predictTime;
                        ItemVO itemEntity = itemEntityFactory.getItemByItemNo(itemNo);
                        List<MmItemOutputVO> outPutList = itemEntityFactory.getOutPutByItemId(itemEntity.getId());
                        ApiPointDTO pointEntity = dataPointApi.getInfoById(outPutList.get(0).getPointId());

                        Calendar calendar = Calendar.getInstance();
                        calendar.setTime(endTime);
                        calendar.add(Calendar.SECOND, (predictLength - 1) * DataPointFreqEnum.getEumByCode(pointEntity.getMinfreqid()).getValue());
                        endTime = new Timestamp(calendar.getTime().getTime());
                        List<DataValueVO> predictValueList = predictResultHandler.getPredictValueByItemNo(itemNo, predictTime, endTime);
                        if (predictValueList.size() != predictLength) {
                            log.debug("merge项融合失败：缺少子项预测数据,对应子项ItemNo=" + itemNo);
                            return null;
                        }
                        predictValueMap.put(itemNo, predictValueList);
                    }
                }
                for (Integer i = 0; i < predictLength; i++) {
                    double sum =0.0;
                    sum = predictValueMap.get(mathItem[0]).get(i).getDataValue();
                    for (int j = 1; j < mathItem.length; j++) {
                        if (operator.get(j-1)=='+')
                        {sum += predictValueMap.get(mathItem[j]).get(i).getDataValue();}
                        if (operator.get(j-1)=='-')
                        {sum -= predictValueMap.get(mathItem[j]).get(i).getDataValue();}
                    }
                    predictResultMat[i][0] = sum;
                }
            }
            //是否为组合预测项
            if (compositionItem.length > 1) {
                Map<String, PredictResultVO> predictResultMap = new HashMap<>();
                Integer columnTotalNumber = 0;
                Integer rowNumber = 0;
                for (String itemNo : compositionItem) {
                    PredictItemHandler predictItem = (PredictItemHandler) predictItemFactory.create(itemEntityFactory.
                            getItemByItemNo(itemNo).getId());
                    predictResult = predictItem.predict(predictTime, predictItemDto);
                    columnTotalNumber += Integer.valueOf(predictResult.getPredictMatrix().length);
                    predictResultMap.put(itemNo, predictItem.predict(predictTime, predictItemDto));
                }
                double[][] matrix = new double[columnTotalNumber][1];
                for (String itemNo : compositionItem) {
                    for (Integer i = 0; i < predictResultMap.get(itemNo).getPredictMatrix().length; i++) {
                        matrix[rowNumber][0] = predictResultMap.get(itemNo).getPredictMatrix()[i][0];
                        rowNumber++;
                    }
                }
                predictResult.setPredictMatrix(matrix);
            }
            predictResult.setPredictId(itemId);
            predictResult.setPredictMatrix(predictResultMat);
            predictResult.setPredictTime(predictTime);
            //预测项预测成功的状态
            itemStatus = ItemPredictStatus.SUCCESS;
        } catch (Exception e) {
            //预测项预测失败的状态
            itemStatus = ItemPredictStatus.FAILED;
            log.debug("merge项预测失败，itemId：" + itemId);
            throw e;
        }
        log.debug("预测完成，itemId：" + itemId + ",itemStatus：" + itemStatus.getValue());
        return predictResult;
    }
}