package space.anyi.BI.service.impl;

import cn.hutool.core.util.IdUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;
import space.anyi.BI.BIApplication;
import space.anyi.BI.entity.Chart;
import space.anyi.BI.entity.dto.ChartDTO;
import space.anyi.BI.entity.vo.ChartVO;
import space.anyi.BI.entity.xinghuo.HttpRequestData;
import space.anyi.BI.entity.xinghuo.HttpResponseData;
import space.anyi.BI.exception.SystemException;
import space.anyi.BI.service.ChartService;
import space.anyi.BI.mapper.ChartMapper;
import org.springframework.stereotype.Service;
import space.anyi.BI.util.AiUtil;
import space.anyi.BI.util.BeanCopyUtil;
import space.anyi.BI.util.ExcelUtils;
import space.anyi.BI.util.SecurityUtils;

import java.io.IOException;

/**
* @author 杨逸
* @description 针对表【chart(图标表)】的数据库操作Service实现
* @createDate 2024-11-28 19:51:56
*/
@Service
public class ChartServiceImpl extends ServiceImpl<ChartMapper, Chart>
    implements ChartService{
    private final static Logger log = LoggerFactory.getLogger(ChartServiceImpl.class);
    @Override
    public ChartVO generateChartByAI(ChartDTO chartDTO, MultipartFile file) {
        //读数据
        String csvData  = "";
        try {
            csvData = ExcelUtils.excel2csv(file.getInputStream());
            log.info("上传的数据为:\n{}", csvData);
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (csvData.length()>3000){
            throw new SystemException(500, "数据量过大，请上传小于3000行的数据");
        }
        StringBuilder message = new StringBuilder("原始数据:\n");
        message.append(csvData);
        message.append("分析目标:\n");
        message.append(chartDTO.getAnalysisTarget());
        message.append("\n.使用").append(chartDTO.getChartType()).append("进行可视化分析.\n");
        //配置prompt向AI发送请求
        HttpRequestData requestData = AiUtil.createDefaultRequestData(message.toString());
        HttpResponseData responseData = AiUtil.doChat(requestData);
        //解析AI返回的数据
        ChartVO chartVO = BeanCopyUtil.copyBean(chartDTO, ChartVO.class);
        String content = responseData.getChoices().get(0).getMessage().getContent();
        log.info("AI返回的数据为:{}", content);
        int index = content.indexOf("```");
        int endIndex = content.lastIndexOf("```");
        if (index == -1 || endIndex == -1){
            throw new SystemException(500, "AI生成图表失败");
        }
        //数据可视化,Echarts的option代码
        chartVO.setGeneratedChartData(content.substring(index+7, endIndex).trim());
        index = endIndex;
        //分析结论
        chartVO.setAnalysisConclusion(content.substring(index+3).trim());

        Chart chart = BeanCopyUtil.copyBean(chartVO, Chart.class);
        chart.setUserId(SecurityUtils.getUserId());
        chart.setChartData(csvData);
        chart.setId(IdUtil.getSnowflake(1,1).nextId());
        //保存到数据库
        save(chart);
        return chartVO;
    }
}