package com.yupi.bi.controller;

import cn.hutool.core.io.FileUtil;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.yupi.bi.annotation.AuthCheck;
import com.yupi.bi.bizmq.BiMessageProducer;
import com.yupi.bi.common.BaseResponse;
import com.yupi.bi.common.DeleteRequest;
import com.yupi.bi.common.ErrorCode;
import com.yupi.bi.common.ResultUtils;
import com.yupi.bi.constant.CommonConstant;
import com.yupi.bi.constant.UserConstant;
import com.yupi.bi.exception.BusinessException;
import com.yupi.bi.exception.ThrowUtils;
import com.yupi.bi.manager.AiManager;
import com.yupi.bi.manager.RedisLimiterManager;
import com.yupi.bi.model.dto.chart.*;
import com.yupi.bi.model.entity.Chart;
import com.yupi.bi.model.entity.User;
import com.yupi.bi.model.enums.ChartStatusEnum;
import com.yupi.bi.model.vo.BiResponse;
import com.yupi.bi.service.ChartService;
import com.yupi.bi.service.UserService;
import com.yupi.bi.utils.ExcelUtills;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ObjectUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ThreadPoolExecutor;

/**
 * 图表接口
 * @author yupi
 */
@RestController
@RequestMapping("/chart")
@Slf4j
public class ChartController {

    @Resource
    private ChartService chartService;

    @Resource
    private UserService userService;

    @Resource
    private AiManager aiManager;

    @Resource
    private RedisLimiterManager redisLimiterManager;

    @Resource
    private ThreadPoolExecutor threadPoolExecutor;

    @Resource
    private BiMessageProducer biMessageProducer;

    /**
     * 创建
     *
     * @param chartAddRequest
     * @param request
     * @return
     */
    @PostMapping("/add")
    public BaseResponse<Long> addChart(@RequestBody ChartAddRequest chartAddRequest, HttpServletRequest request) {
        if (chartAddRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartAddRequest, chart);
        User loginUser = userService.getLoginUser(request);
        chart.setUserId(loginUser.getId());
        boolean result = chartService.save(chart);
        ThrowUtils.throwIf(!result, ErrorCode.OPERATION_ERROR);
        long newChartId = chart.getId();
        return ResultUtils.success(newChartId);
    }

    /**
     * 删除
     *
     * @param deleteRequest
     * @param request
     * @return
     */
    @PostMapping("/delete")
    public BaseResponse<Boolean> deleteChart(@RequestBody DeleteRequest deleteRequest, HttpServletRequest request) {
        if (deleteRequest == null || deleteRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User user = userService.getLoginUser(request);
        long id = deleteRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可删除
        if (!oldChart.getUserId().equals(user.getId()) && !userService.isAdmin(request)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean b = chartService.removeById(id);
        return ResultUtils.success(b);
    }

    /**
     * 更新（仅管理员）
     *
     * @param chartUpdateRequest
     * @return
     */
    @PostMapping("/update")
    @AuthCheck(mustRole = UserConstant.ADMIN_ROLE)
    public BaseResponse<Boolean> updateChart(@RequestBody ChartUpdateRequest chartUpdateRequest) {
        if (chartUpdateRequest == null || chartUpdateRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartUpdateRequest, chart);
        long id = chartUpdateRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }

    /**
     * 根据 id 获取
     *
     * @param id
     * @return
     */
    @GetMapping("/get")
    public BaseResponse<Chart> getChartById(long id, HttpServletRequest request) {
        if (id <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = chartService.getById(id);
        if (chart == null) {
            throw new BusinessException(ErrorCode.NOT_FOUND_ERROR);
        }
        return ResultUtils.success(chart);
    }

    /**
     * 分页获取列表（封装类）
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/list/page")
    public BaseResponse<Page<Chart>> listChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
                                                     HttpServletRequest request) {
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                chartService.getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }

    /**
     * 分页获取当前用户创建的资源列表
     *
     * @param chartQueryRequest
     * @param request
     * @return
     */
    @PostMapping("/my/list/page")
    public BaseResponse<Page<Chart>> listMyChartByPage(@RequestBody ChartQueryRequest chartQueryRequest,
                                                       HttpServletRequest request) {
        if (chartQueryRequest == null) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        User loginUser = userService.getLoginUser(request);
        chartQueryRequest.setUserId(loginUser.getId());
        long current = chartQueryRequest.getCurrent();
        long size = chartQueryRequest.getPageSize();
        // 限制爬虫
        ThrowUtils.throwIf(size > 20, ErrorCode.PARAMS_ERROR);
        Page<Chart> chartPage = chartService.page(new Page<>(current, size),
                chartService.getQueryWrapper(chartQueryRequest));
        return ResultUtils.success(chartPage);
    }

    /**
     * 编辑（用户）
     *
     * @param chartEditRequest
     * @param request
     * @return
     */
    @PostMapping("/edit")
    public BaseResponse<Boolean> editChart(@RequestBody ChartEditRequest chartEditRequest, HttpServletRequest request) {
        if (chartEditRequest == null || chartEditRequest.getId() <= 0) {
            throw new BusinessException(ErrorCode.PARAMS_ERROR);
        }
        Chart chart = new Chart();
        BeanUtils.copyProperties(chartEditRequest, chart);
        User loginUser = userService.getLoginUser(request);
        long id = chartEditRequest.getId();
        // 判断是否存在
        Chart oldChart = chartService.getById(id);
        ThrowUtils.throwIf(oldChart == null, ErrorCode.NOT_FOUND_ERROR);
        // 仅本人或管理员可编辑
        if (!oldChart.getUserId().equals(loginUser.getId()) && !userService.isAdmin(loginUser)) {
            throw new BusinessException(ErrorCode.NO_AUTH_ERROR);
        }
        boolean result = chartService.updateById(chart);
        return ResultUtils.success(result);
    }

    /**
     * 智能分析（同步）
     *
     * @param multipartFile
     * @param genChartByAiRequest
     * @param request
     * @return
     */
    @PostMapping("/gen")
    public BaseResponse<BiResponse> genChartByAi(@RequestPart("file") MultipartFile multipartFile,
                                                 GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        String goal = genChartByAiRequest.getGoal();
        String name = genChartByAiRequest.getName();
        String chartType = genChartByAiRequest.getChartType();
        // 校验
        ThrowUtils.throwIf(StringUtils.isAnyBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(name), ErrorCode.PARAMS_ERROR, "名称为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(name) && name.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(chartType), ErrorCode.PARAMS_ERROR, "类型为空");
        ThrowUtils.throwIf(ObjectUtils.isEmpty(multipartFile), ErrorCode.PARAMS_ERROR, "文件为空");
        // 校验文件大小
        long size = multipartFile.getSize();
        final long TEN_MB = 10 * 1024 * 1024L;
        ThrowUtils.throwIf(size > TEN_MB, ErrorCode.PARAMS_ERROR, "文件超过 10M");
        // 校验文件后缀名
        String originalFilename = multipartFile.getOriginalFilename();
        String suffix = FileUtil.getSuffix(originalFilename);
        final List<String> validFileSuffix = Collections.singletonList("xlsx");
        ThrowUtils.throwIf(!validFileSuffix.contains(suffix), ErrorCode.PARAMS_ERROR, "文件后缀非法");
        User loginUser = userService.getLoginUser(request);
        // 用户输入
        //分析需求：
        //分析网站用户的增长情况
        //原始数据：
        //目期，用户数
        //1号，10
        //2号，20
        //3号，30
        StringBuilder userInput = new StringBuilder();
        userInput.append("分析需求：").append("\n");
        // 拼接分析目标
        String userGoal = goal;
        userGoal += "，请使用" + chartType;
        userInput.append(userGoal).append("\n");
        userInput.append("原始数据：").append("\n");
        // userInput.append("图表类型：").append(chartType).append("\n");
        // 把上传的数据转为 csv
        String csvData = ExcelUtills.excelToCsv(multipartFile);
        userInput.append("数据：").append(csvData);
        String result = aiManager.doChart(CommonConstant.BI_MODEL_ID, userInput.toString());
        System.out.println("result===>" + result);
        String[] split = result.split("【【【【【");
        if (split.length < 2) {
            throw new BusinessException(ErrorCode.SYSTEM_ERROR, "AI 生成错误");
        }
        String genChart = split[1].trim();
        String genResult = split[2].trim();
        // 插入数据库
        Chart chart = new Chart();
        chart.setGoal(goal);
        chart.setName(name);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setGenChart(genChart);
        chart.setGenResult(genResult);
        chart.setStatus(ChartStatusEnum.SUCCESS.getValue());
        chart.setUserId(loginUser.getId());
        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败！");
        BiResponse biResponse = new BiResponse();
        biResponse.setGenChart(genChart);
        biResponse.setGenResult(genResult);
        biResponse.setChartId(chart.getId());
        return ResultUtils.success(biResponse);
    }

    /**
     * 智能分析（异步）
     *
     * @param multipartFile
     * @param genChartByAiRequest
     * @param request
     * @return
     */
    @PostMapping("/gen/async")
    public BaseResponse<BiResponse> genChartByAiAsync(@RequestPart("file") MultipartFile multipartFile,
                                                      GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        String goal = genChartByAiRequest.getGoal();
        String name = genChartByAiRequest.getName();
        String chartType = genChartByAiRequest.getChartType();
        // 校验
        ThrowUtils.throwIf(StringUtils.isAnyBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(name), ErrorCode.PARAMS_ERROR, "名称为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(name) && name.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(chartType), ErrorCode.PARAMS_ERROR, "类型为空");
        ThrowUtils.throwIf(ObjectUtils.isEmpty(multipartFile), ErrorCode.PARAMS_ERROR, "文件为空");
        // 校验文件大小
        long size = multipartFile.getSize();
        final long TEN_MB = 10 * 1024 * 1024L;
        ThrowUtils.throwIf(size > TEN_MB, ErrorCode.PARAMS_ERROR, "文件超过 10M");
        // 校验文件后缀名
        String originalFilename = multipartFile.getOriginalFilename();
        String suffix = FileUtil.getSuffix(originalFilename);
        final List<String> validFileSuffix = Collections.singletonList("xlsx");
        ThrowUtils.throwIf(!validFileSuffix.contains(suffix), ErrorCode.PARAMS_ERROR, "文件后缀非法");

        User loginUser = userService.getLoginUser(request);
        // 限流判断
        redisLimiterManager.doRateLimit("genChartByAi_" + loginUser.getId());


        // 用户输入
        //分析需求：
        //分析网站用户的增长情况
        //原始数据：
        //目期，用户数
        //1号，10
        //2号，20
        //3号，30
        StringBuilder userInput = new StringBuilder();
        userInput.append("分析需求：").append("\n");
        // 拼接分析目标
        String userGoal = goal;
        userGoal += "，请使用" + chartType;
        userInput.append(userGoal).append("\n");
        userInput.append("原始数据：").append("\n");
        // userInput.append("图表类型：").append(chartType).append("\n");
        // 把上传的数据转为 csv
        String csvData = ExcelUtills.excelToCsv(multipartFile);
        userInput.append("数据：").append(csvData);
        // 插入数据库
        Chart chart = new Chart();
        chart.setGoal(goal);
        chart.setName(name);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setStatus(ChartStatusEnum.WAIT.getValue());
        chart.setUserId(loginUser.getId());
        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败！");

        // todo 建议处理任务队列满了之后，抛异常情况
        CompletableFuture.runAsync(() -> {
            // 先修改图表任务状态为“执行中”。等执行成功后，修改为“已完成”、保存执行结果；执行失败后，状态修改为“失败”，记录任务失败信息
            Chart updateChart = new Chart();
            updateChart.setId(chart.getId());
            updateChart.setStatus(ChartStatusEnum.RUNNING.getValue());
            boolean b = chartService.updateById(updateChart);
            if (!b) {
                chartService.handleChartUpdateError(chart.getId(), "更新图表执行中状态失败");
                return;
            }

            // 调用 AI
            String result = aiManager.doChart(CommonConstant.BI_MODEL_ID, userInput.toString());
            System.out.println("result===>" + result);
            String[] split = result.split("【【【【【");
            if (split.length < 2) {
                chartService.handleChartUpdateError(chart.getId(), "AI 生成错误");
                return;
            }
            String genChart = split[1].trim();
            String genResult = split[2].trim();
            Chart updateChartResult = new Chart();
            updateChartResult.setId(chart.getId());
            updateChartResult.setGenChart(genChart);
            updateChartResult.setGenResult(genResult);
            updateChartResult.setStatus(ChartStatusEnum.SUCCESS.getValue());
            boolean updateResult = chartService.updateById(updateChartResult);
            if (!updateResult) {
                chartService.handleChartUpdateError(chart.getId(), "更新图表成功状态失败");
            }

        }, threadPoolExecutor);

        BiResponse biResponse = new BiResponse();
        biResponse.setChartId(chart.getId());
        return ResultUtils.success(biResponse);
    }

    /**
     * 智能分析（异步消息队列）
     *
     * @param multipartFile
     * @param genChartByAiRequest
     * @param request
     * @return
     */
    @PostMapping("/gen/async/mq")
    public BaseResponse<BiResponse> genChartByAiAsyncMq(@RequestPart("file") MultipartFile multipartFile,
                                                        GenChartByAiRequest genChartByAiRequest, HttpServletRequest request) {
        String goal = genChartByAiRequest.getGoal();
        String name = genChartByAiRequest.getName();
        String chartType = genChartByAiRequest.getChartType();
        // 校验
        ThrowUtils.throwIf(StringUtils.isAnyBlank(goal), ErrorCode.PARAMS_ERROR, "目标为空");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(name), ErrorCode.PARAMS_ERROR, "名称为空");
        ThrowUtils.throwIf(StringUtils.isNotBlank(name) && name.length() > 100, ErrorCode.PARAMS_ERROR, "名称过长");
        ThrowUtils.throwIf(StringUtils.isAnyBlank(chartType), ErrorCode.PARAMS_ERROR, "类型为空");
        ThrowUtils.throwIf(ObjectUtils.isEmpty(multipartFile), ErrorCode.PARAMS_ERROR, "文件为空");
        // 校验文件大小
        long size = multipartFile.getSize();
        final long TEN_MB = 10 * 1024 * 1024L;
        ThrowUtils.throwIf(size > TEN_MB, ErrorCode.PARAMS_ERROR, "文件超过 10M");
        // 校验文件后缀名
        String originalFilename = multipartFile.getOriginalFilename();
        String suffix = FileUtil.getSuffix(originalFilename);
        final List<String> validFileSuffix = Collections.singletonList("xlsx");
        ThrowUtils.throwIf(!validFileSuffix.contains(suffix), ErrorCode.PARAMS_ERROR, "文件后缀非法");

        User loginUser = userService.getLoginUser(request);
        // 限流判断
        redisLimiterManager.doRateLimit("genChartByAi_" + loginUser.getId());


        // 用户输入
        //分析需求：
        //分析网站用户的增长情况
        //原始数据：
        //目期，用户数
        //1号，10
        //2号，20
        //3号，30
        StringBuilder userInput = new StringBuilder();
        userInput.append("分析需求：").append("\n");
        // 拼接分析目标
        String userGoal = goal;
        userGoal += "，请使用" + chartType;
        userInput.append(userGoal).append("\n");
        userInput.append("原始数据：").append("\n");
        // userInput.append("图表类型：").append(chartType).append("\n");
        // 把上传的数据转为 csv
        String csvData = ExcelUtills.excelToCsv(multipartFile);
        userInput.append("数据：").append(csvData);
        // 插入数据库
        Chart chart = new Chart();
        chart.setGoal(goal);
        chart.setName(name);
        chart.setChartData(csvData);
        chart.setChartType(chartType);
        chart.setStatus(ChartStatusEnum.WAIT.getValue());
        chart.setUserId(loginUser.getId());
        boolean saveResult = chartService.save(chart);
        ThrowUtils.throwIf(!saveResult, ErrorCode.SYSTEM_ERROR, "图表保存失败！");
        long newChartId = chart.getId();
        // 发消息
        biMessageProducer.sendMessage(String.valueOf(newChartId));

        BiResponse biResponse = new BiResponse();
        biResponse.setChartId(newChartId);
        return ResultUtils.success(biResponse);
    }



}