package com.gkhy.exam.system.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gkhy.exam.common.api.CommonPage;
import com.gkhy.exam.common.api.CommonResult;
import com.gkhy.exam.common.domain.model.LoginUserDetails;
import com.gkhy.exam.common.exception.ApiException;
import com.gkhy.exam.common.utils.PageUtils;
import com.gkhy.exam.common.utils.SecurityUtils;
import com.gkhy.exam.system.domain.CompanySummary;
import com.gkhy.exam.system.domain.SysCompany;
import com.gkhy.exam.system.mapper.CompanySummaryMapper;
import com.gkhy.exam.system.service.CompanySummaryService;
import com.gkhy.exam.system.service.SysCompanyService;
import org.apache.poi.schemas.vmldrawing.XmlDocument;
import org.apache.poi.xwpf.extractor.XWPFWordExtractor;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class CompanySummaryServiceImpl extends ServiceImpl<CompanySummaryMapper, CompanySummary> implements CompanySummaryService {

    @Autowired
    private CompanySummaryMapper companySummaryMapper;
    @Autowired
    private SysCompanyService sysCompanyService;



    @Override
    public CommonPage selectCompanySummaryList(Integer companyId) {
        if (!SecurityUtils.adminUser()){
            if (companyId==null){
                throw new ApiException("非管理员操作，查询条件不可为空");
            }
        }
        PageUtils.startPage();
        List<CompanySummary> companySummaries = companySummaryMapper.selectCompanySummaryList(companyId);
        return CommonPage.restPage(companySummaries);
    }

    @Override
    public CommonResult insertCompanySummary(CompanySummary companySummary) {
        LoginUserDetails loginUser = SecurityUtils.getLoginUser();
        List<CompanySummary> companySummaries = companySummaryMapper.selectCompanySummaryList(companySummary.getCompanyId());
        if (companySummaries.size()>0){
            throw new ApiException("当前企业已有相关数据，请删除原有数据后重试");
        }
        SysCompany sysCompany = sysCompanyService.selectCompanyById(Long.valueOf(companySummary.getCompanyId()));
        companySummary.setCompanyName(sysCompany.getName());
        companySummary.setCreateBy(loginUser.getUsername());
        companySummary.setCreateTime(LocalDateTime.now());
        int insert = companySummaryMapper.insert(companySummary);
        if (insert>0){
            return CommonResult.success();
        }
        return CommonResult.failed();
    }

    @Override
    public CommonResult updateCompanySummary(CompanySummary companySummary) {
        LoginUserDetails loginUser = SecurityUtils.getLoginUser();
        SysCompany sysCompany = sysCompanyService.selectCompanyById(Long.valueOf(companySummary.getCompanyId()));
        companySummary.setCompanyName(sysCompany.getName());
        companySummary.setUpdateBy(loginUser.getUsername());
        companySummary.setUpdateTime(LocalDateTime.now());
        int update = companySummaryMapper.updateSummaryById(companySummary);
        if (update>0){
            return CommonResult.success();
        }
        return CommonResult.failed();
    }

    @Override
    public CommonResult deletedCompanySummary(Integer companySummaryId) {
        CompanySummary companySummary = new CompanySummary();
        LoginUserDetails loginUser = SecurityUtils.getLoginUser();
        companySummary.setUpdateBy(loginUser.getUsername());
        companySummary.setUpdateTime(LocalDateTime.now());
        companySummary.setDelFlag(2);
        companySummary.setId(companySummaryId);
        int i = companySummaryMapper.updateById(companySummary);
        if (i>0){
            return CommonResult.success();
        }
        return CommonResult.failed();
    }

    @Override
    public CommonResult uploadSummary(MultipartFile file,Integer companyId) {

        List<CompanySummary> companySummaries = companySummaryMapper.selectCompanySummaryList(Math.toIntExact(companyId == null ? SecurityUtils.getCompanyId() : companyId));
        if (companySummaries.size()>0){
            throw new ApiException("当前企业已有相关数据，请删除原有数据后重试");
        }
        try {
            String fileData = readWordToString(file);
            CompanySummary companySummary = new CompanySummary();
            companySummary.setCompanySummary(fileData);
            if (companyId==null){
                companySummary.setCompanyId(Math.toIntExact(SecurityUtils.getCompanyId()));
            }else {
                companySummary.setCompanyId(companyId);
            }
            companySummary.setCreateTime(LocalDateTime.now());
            companySummary.setCreateBy(SecurityUtils.getUsername());
            companySummaryMapper.insert(companySummary);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return CommonResult.success();
    }

    /**
     * 读取Word文档内容并转为字符串
     * @param file Word文件
     * @return 文档内容的字符串
     */
    public static String readWordToString(MultipartFile file) throws Exception {
        try (InputStream inputStream = file.getInputStream();
             XWPFDocument document = new XWPFDocument(inputStream);
             XWPFWordExtractor extractor = new XWPFWordExtractor(document)) {
            return extractor.getText();
        }
    }
}