package com.iailab.module.model.mpk.controller.admin;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.iailab.framework.common.exception.enums.GlobalErrorCodeConstants;
import com.iailab.framework.common.pojo.CommonResult;
import com.iailab.module.model.mpk.common.MdkConstant;
import com.iailab.module.model.mpk.common.utils.DllUtils;
import com.iailab.module.model.mpk.common.utils.Readtxt;
import com.iailab.module.model.mpk.dto.MdkDTO;
import io.swagger.v3.oas.annotations.Operation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import java.io.File;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import static com.iailab.framework.common.pojo.CommonResult.error;
import static com.iailab.framework.common.pojo.CommonResult.success;

/**
 * @author PanZhibao
 * @Description
 * @createTime 2024年08月08日
 */
@RestController
@Slf4j
@RequestMapping("/model/mpk/api")
public class MdkController {
    @Value("${mpk.bak-file-path}")
    private String mpkBakFilePath;


    @PostMapping("run")
    public CommonResult<String> run(@RequestBody MdkDTO dto) {
        Class<?> clazz;
        URLClassLoader classLoader;
        try {
            File jarFile = new File(mpkBakFilePath + File.separator + MdkConstant.JAR + File.separator + dto.getPyName() + ".jar");
            if (!jarFile.exists()) {
                throw new RuntimeException("jar包不存在，请先生成代码。jarPath:" + jarFile.getAbsolutePath());
            }
            File dllFile = new File(mpkBakFilePath + File.separator + MdkConstant.DLL + File.separator + dto.getPyName() + ".dll");
            if (!dllFile.exists()) {
                throw new RuntimeException("dll文件不存在，请先生成代码。dllPath:" + dllFile.getAbsolutePath());
            }
            // 加载jar包
            classLoader = DllUtils.loadJar(jarFile.getAbsolutePath());
            // 实现类
            clazz = classLoader.loadClass(dto.getClassName());
            // 加载dll到实现类
            DllUtils.loadDll(clazz,dllFile.getAbsolutePath());
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException("加载运行环境失败。");
        }

        System.out.println("runTime=" + System.currentTimeMillis());
        try {
            List<String> datas = dto.getDatas();

            int paramLength = dto.getHasModel() ? datas.size() + 2 : datas.size() + 1;
            Object[] paramsValueArray = new Object[paramLength];
            Class<?>[] paramsArray = new Class[paramLength];

            try {
                for (int i = 0; i < datas.size(); i++) {
                    String json = datas.get(i);
                    JSONArray jsonArray = JSON.parseArray(json);
                    double[][] data = new double[jsonArray.size()][jsonArray.getJSONArray(0).size()];
                    for (int j = 0; j < jsonArray.size(); j++) {
                        for (int k = 0; k < jsonArray.getJSONArray(j).size(); k++) {
                            data[j][k] = jsonArray.getJSONArray(j).getDoubleValue(k);
                        }
                    }
                    paramsValueArray[i] = data;
                    paramsArray[i] = double[][].class;
                }
            } catch (Exception e) {
                e.printStackTrace();
                return error(GlobalErrorCodeConstants.BAD_REQUEST.getCode(),"参数错误，请检查！");
            }

            if (dto.getHasModel()) {
                paramsValueArray[datas.size()] = dto.getModel();
                paramsValueArray[datas.size() + 1] = dto.getModelSettings();
                paramsArray[datas.size()] = HashMap.class;
                paramsArray[datas.size() + 1] = HashMap.class;
            }else {
                paramsValueArray[datas.size()] = dto.getModelSettings();
                paramsArray[datas.size()] = HashMap.class;
            }

            HashMap result = (HashMap) clazz.getDeclaredMethod(dto.getMethodName(), paramsArray).invoke(clazz.newInstance(), paramsValueArray);
            return success(JSON.toJSONString(result));
        } catch (Exception ex) {
            ex.printStackTrace();
            return error(GlobalErrorCodeConstants.INTERNAL_SERVER_ERROR.getCode(),"运行异常");
        } finally {
            if (classLoader != null) {
                DllUtils.unloadDll(classLoader);
                DllUtils.unloadJar(classLoader);
            }
            System.gc();
        }
    }

    @PostMapping("/import")
    @Operation(summary = "导入参数")
    public CommonResult<List<String>> importExcel(@RequestParam("file") MultipartFile file) throws Exception {
        List<double[][]> datas = Readtxt.readMethodExcel(file);
        List<String> result = new ArrayList<>();
        if (!CollectionUtils.isEmpty(datas)) {
            for (double[][] data : datas) {
                if (data.length > 0) {
                    result.add(JSON.toJSONString(data));
                }
            }
        }
        return success(result);
    }
}