package space.anyi.BI.service.impl;

import cn.hutool.core.util.IdUtil;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;
import org.springframework.web.multipart.MultipartFile;
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.vo.PageVO;
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 javax.annotation.Resource;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

/**
* @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);
    @Resource
    private ThreadPoolExecutor threadPoolExecutor;

    /**
     * 异步使用AI生成图表
     * @param chartDTO
     * @param file
     * @description:
     * @author: 杨逸
     * @data:2024/12/07 17:43:22
     * @since 1.0.0
     * @return
     */
    @Override
    public long generateChartByAIAsyn(ChartDTO chartDTO, MultipartFile file) {

        Chart chart = BeanCopyUtil.copyBean(chartDTO, Chart.class);
        long chartId = IdUtil.getSnowflake(1, 1).nextId();
        chart.setId(chartId);
        chart.setUserId(SecurityUtils.getUserId());
        chart.setState("等待中");
        //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){
            chart.setChartData("");
            chart.setState("失败");
            chart.setExecuteMessage("数据量过大，请上传小于3000行的数据");
            save(chart);
            throw new SystemException(500, "数据量过大，请上传小于3000行的数据");
        }
        chart.setChartData(csvData);
        save(chart);
        //使用线程池优化生成图表的逻辑
        String finalCsvData = csvData;
        try {
            threadPoolExecutor.execute(()->{
                chart.setState("生成中");
               updateById(chart);

                StringBuilder message = new StringBuilder("原始数据:\n");
                message.append(finalCsvData);
                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
                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){
                    chart.setState("失败");
                    chart.setExecuteMessage("AI生成图表失败");
                    updateById(chart);
                    throw new SystemException(500, "AI生成图表失败");
                }
                //数据可视化,Echarts的option代码
                chart.setGeneratedChartData(content.substring(index+7, endIndex).trim());
                index = endIndex;
                //分析结论
                chart.setAnalysisConclusion(content.substring(index+3).trim());
                //保存到数据库
                chart.setState("成功");
                chart.setExecuteMessage("AI生成图表成功");
                updateById(chart);
            });
        } catch (RejectedExecutionException e) {
            //e.printStackTrace();
            log.error("线程池已满，请稍后再试",e);
            chart.setState("失败");
            chart.setExecuteMessage("系统异常");
            updateById(chart);
        }

        return chartId;
    }

    @Override
    public PageVO getChartPage(Integer pageNum, Integer pageSize, String name, Long userId) {
        if (!SecurityUtils.isAdmin()){
            userId = SecurityUtils.getUserId();
        }
        LambdaQueryWrapper<Chart>  lambdaQueryWrapper = new LambdaQueryWrapper<Chart>()
                .like(StringUtils.hasText(name), Chart::getName, name)
                .eq(userId != null, Chart::getUserId, userId);
        Page<Chart> page = page(new Page<Chart>(pageNum, pageSize),lambdaQueryWrapper);
        List<ChartVO> voList = new ArrayList<>();
        for (Chart chart : page.getRecords()) {
            ChartVO chartVO = BeanCopyUtil.copyBean(chart, ChartVO.class);
            chartVO.setId(chart.getId().toString());
            chartVO.setUserId(chart.getUserId().toString());
            voList.add(chartVO);
        }
        PageVO pageVO = new PageVO(voList, page.getTotal());
        return pageVO;
    }

    @Override
    public ChartVO generateChartByAI(ChartDTO chartDTO, MultipartFile file) {
        //读数据
        String csvData  = "";
        long charId = IdUtil.getSnowflake(1, 1).nextId();
        Chart chart = BeanCopyUtil.copyBean(chartDTO, Chart.class);
        chart.setId(charId);
        chart.setUserId(SecurityUtils.getUserId());
        chart.setState("等待中");
        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){
            chart.setState("失败");
            chart.setExecuteMessage("数据量过大，请上传小于3000行的数据");
            chart.setChartData("");
            save(chart);
            throw new SystemException(500, "数据量过大，请上传小于3000行的数据");
        }
        chart.setChartData(csvData);
        save(chart);
        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");
        chart.setState("生成中");
        chart.setExecuteMessage("AI正在生成图表");
        updateById(chart);
        //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){
            chart.setState("失败");
            chart.setExecuteMessage("AI生成图表失败");
            updateById(chart);
            throw new SystemException(500, "AI生成图表失败");
        }
        //数据可视化,Echarts的option代码
        chart.setGeneratedChartData(content.substring(index+7, endIndex).trim());
        index = endIndex;
        //分析结论
        chart.setAnalysisConclusion(content.substring(index+3).trim());

        //更新数据库
        chart.setState("成功");
        chart.setExecuteMessage("图表生成成功");
        updateById(chart);
        ChartVO chartVO =  BeanCopyUtil.copyBean(chart, ChartVO.class);
        return chartVO;
    }
}